Atlantica Sustainable Infrastructure (AY) 20-F28 Feb 222021 FY Annual report (foreign)Financial data

Company Profile

Document and Entity Information

Document and Entity Information	12 Months Ended
Document and Entity Information	Dec. 31, 2021shares
Entity Addresses [Line Items]
Document Type	20-F
Amendment Flag	false
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity File Number	001-36487
Entity Registrant Name	Atlantica Sustainable Infrastructure plc
Entity Central Index Key	0001601072
Entity Incorporation, State or Country Code	X0
Entity Address, Address Line One	Great West House, GW1, 17th floor
Entity Address, Address Line Two	Great West Road
Entity Address, City or Town	Brentford
Entity Address, Postal Zip Code	TW8 9DF
Entity Address, Country	GB
Title of 12(b) Security	Ordinary Shares, nominal value $0.10 per share
Trading Symbol	AY
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding	112,402,973
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Accounting Standard	International Financial Reporting Standards
Entity Shell Company	false
Auditor Name	ERNST & YOUNG, S.L.
Auditor Location	Madrid, Spain
Auditor Firm ID	1461
Business Contact [Member]
Entity Addresses [Line Items]
Entity Address, Address Line One	Great West House, Gw1, 17Th Floor
Entity Address, Address Line Two	Great West Road
Entity Address, City or Town	Brentford
Entity Address, Postal Zip Code	TW8 9DF
Entity Address, Country	GB
City Area Code	44
Local Phone Number	203 499 0465
Contact Personnel Name	Santiago Seage

Consolidated statements of fina

Consolidated statements of financial position - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Non-current assets
Contracted concessional assets	$ 8,021,568	$ 8,155,418
Investments carried under the equity method	294,581	116,614
Other accounts receivable	85,801	88,655
Derivative assets	10,807	1,099
Financial investments	96,608	89,754
Deferred tax assets	172,268	152,290
Total non-current assets	8,585,025	8,514,076
Current assets
Inventories	29,694	23,958
Trade receivables	227,343	258,087
Credits and other receivables	79,800	73,648
Trade and other receivables	307,143	331,735
Financial investments	207,379	200,084
Cash and cash equivalents	622,689	868,501
Total current assets	1,166,905	1,424,278
Total assets	9,751,930	9,938,354
Equity attributable to the Company
Share capital	11,240	10,667
Share premium	872,011	1,011,743
Capital reserves	1,020,027	881,745
Other reserves	171,272	96,641
Accumulated currency translation differences	(133,450)	(99,925)
Accumulated deficit	(398,701)	(373,489)
Non-controlling interest	206,206	213,499
Total equity	1,748,605	1,740,881
Non-current liabilities
Long-term corporate debt	995,190	970,077
Borrowings	3,407,956	3,862,068
Notes and bonds	979,718	1,063,200
Long-term project debt	4,387,674	4,925,268
Grants and other liabilities	1,263,744	1,229,767
Derivative liabilities	223,453	328,184
Deferred tax liabilities	308,859	260,923
Total non-current liabilities	7,178,920	7,714,219
Current liabilities
Short-term corporate debt	27,881	23,648
Borrowings	597,680	261,788
Notes and bonds	50,839	50,558
Short-term project debt	648,519	312,346
Trade payables and other current liabilities	113,907	92,557
Income and other tax payables	34,098	54,703
Total current liabilities	824,405	483,254
Total equity and liabilities	$ 9,751,930	$ 9,938,354

Consolidated income statements

Consolidated income statements - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated income statements [Abstract]
Revenue	$ 1,211,749	$ 1,013,260	$ 1,011,452
Other operating income	74,670	99,525	93,774
Employee benefit expenses	(78,758)	(54,464)	(32,246)
Depreciation, amortization, and impairment charges	(439,441)	(408,604)	(310,755)
Other operating expenses	(414,330)	(276,666)	(261,776)
Operating profit	353,890	373,051	500,449
Financial income	2,755	7,052	4,121
Financial expense	(361,270)	(378,386)	(407,990)
Net exchange differences	1,873	(1,351)	2,674
Other financial income/(expense), net	15,750	40,875	(1,153)
Financial expense, net	(340,892)	(331,810)	(402,348)
Share of profit of associates carried under the equity method	12,304	510	7,457
Profit before income tax	25,302	41,751	105,558
Income tax expense	(36,220)	(24,877)	(30,950)
Profit/(loss) for the year	(10,918)	16,874	74,608
Profit attributable to non-controlling interests	(19,162)	(4,906)	(12,473)
Profit/(loss) for the year attributable to the Company	$ (30,080)	$ 11,968	$ 62,135
Weighted average number of ordinary shares outstanding - basic (in shares)	111,008	101,879	101,063
Weighted average number of ordinary shares outstanding - diluted (in shares)	114,523	103,392	101,063
Basic earnings per share (in dollars per share)	$ (0.27)	$ 0.12	$ 0.61
Diluted earnings per share (in dollars per share)	$ (0.26)	$ 0.12	$ 0.61

Consolidated statements of comp

Consolidated statements of comprehensive income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated statements of comprehensive income [Abstract]
Profit/(loss) for the year	$ (10,918)	$ 16,874	$ 74,608
Items that may be subject to transfer to income statement
Change in fair value of cash flow hedges	33,846	(26,272)	(81,713)
Currency translation differences	(41,956)	(9,947)	(22,284)
Tax effect	(9,139)	5,897	20,088
Net expenses recognized directly in equity	(17,249)	(30,322)	(83,909)
Cash flow hedges	58,292	58,381	55,765
Tax effect	(14,573)	(14,595)	(13,941)
Transfers to income statement	43,719	43,786	41,824
Other comprehensive income/(loss)	26,470	13,464	(42,085)
Total comprehensive income for the year	15,552	30,338	32,523
Total comprehensive income attributable to non-controlling interest	(14,586)	(4,627)	(12,429)
Total comprehensive income attributable to the Company	$ 966	$ 25,711	$ 20,094

Consolidated statements of chan

Consolidated statements of changes in equity - USD ($) $ in Thousands	Total	Total Equity Attributable to Company [Member]	Share Capital [Member]	Share Premium [Member]	Capital Reserves [Member]	Other Reserves [Member]	Accumulated Currency Translation Differences [Member]	Accumulated Deficit [Member]	Non-controlling Interests [Member]
Balance, beginning of period at Dec. 31, 2018	$ 1,756,112	$ 1,617,384	$ 10,022	$ 1,981,881	$ 48,059	$ 95,011	$ (68,315)	$ (449,274)	$ 138,728
Profit/(Loss) for the year after taxes	74,608	62,135	0	0	0	0	0	62,135	12,473
Change in fair value of cash flow hedges	(25,948)	(26,265)	0	0	0	(27,947)	0	1,682	317
Currency translation differences	(22,284)	(22,509)	0	0	0	0	(22,509)	0	225
Tax effect	6,147	6,733	0	0	0	6,733	0	0	(586)
Other comprehensive income/(loss)	(42,085)	(42,041)	0	0	0	(21,214)	(22,509)	1,682	(44)
Total comprehensive income for the year	32,523	20,094	0	0	0	(21,214)	(22,509)	63,817	12,429
Capital increase (Note 13)	30,000	30,000	138	29,862	0	0	0	0	0
Amherst Island (Note 7)	92,303	0	0	0	0	0	0	0	92,303
Reduction of Share Premium (Note 13)	0	0	0	(1,000,000)	1,000,000	0	0	0	0
Distributions (Note 13)	(196,082)	(159,002)	0	0	(159,002)	0	0	0	(37,080)
Balance, end of period at Dec. 31, 2019	1,714,856	1,508,476	10,160	1,011,743	889,057	73,797	(90,824)	(385,457)	206,380
Profit/(Loss) for the year after taxes	16,874	11,968	0	0	0	0	0	11,968	4,906
Change in fair value of cash flow hedges	32,109	31,353	0	0	0	31,353	0	0	756
Currency translation differences	(9,947)	(9,101)	0	0	0	0	(9,101)	0	(846)
Tax effect	(8,698)	(8,509)	0	0	0	(8,509)	0	0	(189)
Other comprehensive income/(loss)	13,464	13,743	0	0	0	22,844	(9,101)	0	(279)
Total comprehensive income for the year	30,338	25,711	0	0	0	22,844	(9,101)	11,968	4,627
Capital increase (Note 13)	161,854	161,854	507	0	161,347	0	0	0	0
Business combinations (Note 5)	25,308	0	0	0	0	0	0	0	25,308
Distributions (Note 13)	(191,475)	(168,659)	0	0	(168,659)	0	0	0	(22,816)
Balance, end of period at Dec. 31, 2020	1,740,881	1,527,382	10,667	1,011,743	881,745	96,641	(99,925)	(373,489)	213,499
Profit/(Loss) for the year after taxes	(10,918)	(30,080)	0	0	0	0	0	(30,080)	19,162
Change in fair value of cash flow hedges	92,138	87,361	0	0	0	97,421	0	(10,060)	4,777
Currency translation differences	(41,956)	(33,525)	0	0	0	0	(33,525)	0	(8,431)
Tax effect	(23,712)	(22,790)	0	0	0	(22,790)	0	0	(922)
Other comprehensive income/(loss)	26,470	31,046	0	0	0	74,631	(33,525)	(10,060)	(4,576)
Total comprehensive income for the year	15,552	966	0	0	0	74,631	(33,525)	(40,140)	14,586
Capital increase (Note 13)	189,761	189,761	573	60,268	128,920	0	0	0	0
Reduction of Share Premium (Note 13)	0	0	0	(200,000)	200,000	0	0	0	0
Business combinations (Note 5)	8,287	0	0	0	0	0	0	0	8,287
Share-based compensation (Note 13)	14,928	14,928	0	0	0	0	0	14,928	0
Distributions (Note 13)	(220,804)	(190,638)	0	0	(190,638)	0	0	0	(30,166)
Balance, end of period at Dec. 31, 2021	$ 1,748,605	$ 1,542,399	$ 11,240	$ 872,011	$ 1,020,027	$ 171,272	$ (133,450)	$ (398,701)	$ 206,206

Consolidated cash flow statemen

Consolidated cash flow statements - USD ($) $ in Thousands		12 Months Ended
Consolidated cash flow statements - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated cash flows statements [Abstract]
Profit/(loss) for the year		$ (10,918)	$ 16,874	$ 74,608
Non-monetary adjustments
Depreciation, amortization and impairment charges		439,441	408,604	310,755
Financial (income)/expenses		359,550	315,151	405,634
Fair value (gains)/losses on derivative financial instruments		(16,785)	15,308	(613)
Shares of (profits)/losses from associates		(12,304)	(510)	(7,457)
Income tax		36,220	24,877	30,950
Other non-monetary items		55,809	(43,943)	(25,800)
Profit/(loss) for the year adjusted by non-monetary items		851,013	736,361	788,077
Changes in working capital
Inventories		5,215	(4,590)	(1,343)
Trade and other receivables		48,521	(790)	(71,505)
Trade payables and other current liabilities		(25,782)	(9,771)	(36,533)
Financial investments and other current assets/liabilities		(31,081)	4,249	(15,602)
Changes in working capital		(3,127)	(10,902)	(124,983)
Income tax received/(paid)		(51,684)	(16,425)	(23)
Interest received		2,519	5,148	10,135
Interest paid		(293,098)	(275,961)	(309,625)
Net cash provided by operating activities		505,623	438,221	363,581
Acquisitions of subsidiaries and entities under the equity method		(362,449)	2,453	(173,366)
Investments in contracted concessional assets	[1]	(24,682)	(1,361)	22,009
Distributions from entities under the equity method		34,883	22,246	30,443
Other non-current assets/liabilities		1,093	(29,198)	2,703
Net cash used in investing activities		(351,155)	(5,860)	(118,211)
Proceeds from project debt		14,560	603,949	5,860
Proceeds from corporate debt		429,014	678,651	352,966
Repayment of project debt		(418,265)	(621,691)	(282,255)
Repayment of corporate debt		(376,154)	(502,042)	(320,815)
Dividends paid to Company's shareholders		(190,638)	(168,659)	(159,002)
Dividends paid to non-controlling interest		(28,134)	(22,944)	(29,239)
Purchase of Liberty Interactive's equity interests in Solana		0	(266,850)	0
Non-controlling interest capital contribution		0	0	92,303
Capital increase		189,454	162,246	30,000
Net cash used in financing activities		(380,163)	(137,340)	(310,182)
Net increase/(decrease) in cash and cash equivalents		(225,695)	295,021	(64,812)
Cash and cash equivalents at beginning of the year		868,501	562,795	631,542
Translation differences in cash and cash equivalents		(20,117)	10,685	(3,935)
Cash and cash equivalents at the end of the year		$ 622,689	$ 868,501	$ 562,795

[1]	Includes proceeds for $ 20.5 7.4 22.2

Consolidated cash flow statem_2

Consolidated cash flow statements (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated cash flows statements [Abstract]
Proceeds from investments in contracted concessional assets	$ 20.5	$ 7.4	$ 22.2

Nature of the business

Nature of the business	12 Months Ended
Nature of the business	Dec. 31, 2021
Nature of the business [Abstract]
Nature of the business	Note 1.- Nature of the business Atlantica Sustainable Infrastructure plc (“Atlantica” or the “Company”) is a sustainable infrastructure company with a majority of its business in renewable energy assets. Atlantica currently owns, manages and invests in renewable energy, storage, efficient natural gas and heat, electric transmission lines and water assets focused on North America (the United States, Canada and Mexico), South America (Peru, Chile, Colombia and Uruguay) and EMEA (Spain, Italy, Algeria and South Africa). Atlantica’s shares trade on the NASDAQ Global Select Market under the symbol “AY”. Algonquin Power & Utilities Corp. (“Algonquin”) is the largest shareholder of the Company and owns a 43.6% stake in Atlantica as of December 31, 2021. Algonquin’s voting rights and rights to appoint directors are limited to 41.5% and the difference between Algonquin´s ownership and 41.5% will vote replicating non-Algonquin’s shareholders ’ During the year 2020, the Company completed the following investments: - On April 3, 2020, the Company made an initial investment in the creation of a renewable energy platform in Chile, together with financial partners, where it owns an approximately 35% stake and has a strategic investor role. The first investment was the acquisition of a 55 MW solar PV plant (“Chile PV 1”). The Company’s initial contribution was approximately $4 million. In addition, on January 6, 2021, the Company closed its second investment through the platform with the acquisition of a 40 MW solar PV plant (“Chile PV 2”). The total equity investment for this new asset was approximately $5.0 million. The platform intends to make further investments in renewable energy in Chile and sign Power Purchase Agreements (“PPAs” ) with credit worthy off-takers. - In January 2019, the Company entered into an agreement with Abengoa (references to “Abengoa” refer to Abengoa, S.A., together with its subsidiaries, or Abenewco1, S.A. together with its subsidiaries, unless the context otherwise requires) for the acquisition of a 51% stake in Tenes, a water desalination plant in Algeria. Closing of the acquisition was subject to certain conditions precedent, which were not fulfilled. On May 31, 2020, the Company entered into a new agreement, which provided the Company with certain additional decision rights, including the right to appoint the majority of directors of the board of Befesa Agua Tenes, and therefore controls the asset. - On August 17, 2020, the Company closed the acquisition of Liberty Interactive’s equity interest in Solana. Liberty Interactive was the tax equity investor in the Solana project. The total equity investment is expected to be up to $285 million of which $272 million has already been paid. In January 2021 the Company closed the acquisition of 42.5% of the equity of Rioglass Solar Holding S.A. (“Rioglass”) a supplier of spare parts and services to the solar industry, increasing its stake to 57.5%. In addition, on July 22, 2021 the Company exercised the option to acquire the remaining stake of 42.5%. The investment made in 2021 to acquire the additional 85% equity, resulting in a 100% ownership, was approximately $17.1 million (Note 5). On April 7, 2021, the Company closed the acquisition of Coso, a 135 MW renewable asset in California. Coso is the third largest geothermal plant in the United States and provides base load renewable energy to the California Independent System Operator (California ISO). It has PPAs signed with an 18-year average contract life. The total equity investment was approximately $130 million (Note 5). In addition, on July 15, 2021, the Company repaid $40 million of project debt. On May 14, 2021, the Company closed the acquisition of Calgary District Heating, a district heating asset of approximately 55 MWt in Canada for a total equity investment of approximately $22.7 million (Note 5). Calgary District Heating has been in operation since 2010 and provides heating services to a diverse range of government, institutional and commercial customers in the city of Calgary. On June 16, 2021, the Company acquired a 49% interest in a 596 MW portfolio of wind assets in the United States (Vento II) for a total equity investment net of cash consolidated at the transaction date of approximately $180.7 million (Note 7). EDP Renewables owns the remaining 51%. The assets have PPAs with investment grade off-takers with five-year average remaining contract life at the time of the investment. On August 6, 2021, the Company closed the acquisition of Italy PV 1 and Italy PV 2, two solar PV plants in Italy with a combined capacity of 3.7 MW for a total equity investment of $9 million (Note 5). Italy PV 1 and Italy PV 2 have regulated revenues under a feed in tariff until 2030 and 2031, respectively. On November 25, 2021, the Company closed the acquisition of La Sierpe, a 20 MW solar PV plant in Colombia for a total equity investment of approximately $23.5 million. The asset was acquired under a Right of First Offer (“ROFO”) agreement with Liberty GES. The Company also acquired two additional solar projects in Colombia which are currently in construction with a combined capacity of approximately 30 MW, La Tolua and Tierra Linda. On December 14, 2021, the Company closed the acquisition of Italy PV 3, a 2.5 MW solar PV portfolio in Italy for a total equity investment of approximately $4 million. Italy PV 3 has regulated revenues under a feed in tariff until 2032. The following table provides an overview of the main contracted concessional assets the Company owned or had an interest in as of December 31, 2021: Assets Type Ownership Location Currency (9) Capacity (Gross) Counterparty Credit Ratings (10) COD* Contract Years Remaining (16) Solana Renewable (Solar) 100% Arizona (USA) USD 280 MW BBB+/A3/BBB+ 2013 22 Mojave Renewable (Solar) 100% California (USA) USD 280 MW BB-/ -- /BB 2014 18 Coso Renewable (Geothermal) 100% California (USA) USD 135 MW Investment Grade (11) 1987-1989 17 Elkhorn Valley Renewable (Wind) 49% Oregon (USA) USD 101 MW BBB/A3/-- 2007 6 Prairie Star Renewable (Wind) 49% Minnesota (USA) USD 101 MW --/A3/A- 2007 6 Twin Groves II Renewable (Wind) 49% Illinois (USA) USD 198 MW BBB-/Baa2/-- 2008 4 Lone Star II Renewable (Wind) 49% Texas (USA) USD 196 MW Not rated 2008 1 Chile PV 1 Renewable (Solar) 35% (1) Chile USD 55 MW N/A 2016 N/A Chile PV 2 Renewable (Solar) 35% (1) Chile USD 40 MW Not rated 2017 9 La Sierpe Renewable (Solar) 100% Colombia COP 20 MW Not rated 2021 14 Palmatir Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (12) 2014 12 Cadonal Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (12) 2014 13 Melowind Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- 2015 14 Mini-Hydro Renewable (Hydraulic) 100% Peru USD 4 MW BBB+/Baa1/BBB 2012 11 Solaben 2 & 3 Renewable (Solar) 70% (2) Spain Euro 2x50 MW A/Baa1/A- 2012 16/16 Solacor 1 & 2 Renewable (Solar) 87% (3) Spain Euro 2x50 MW A/Baa1/A- 2012 15/15 PS10 & PS20 Renewable (Solar) 100% Spain Euro 31 MW A/Baa1/A- 2007&2009 10/12 Helioenergy 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2011 15/15 Helios 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2012 15/16 Solnova 1, 3 & 4 Renewable (Solar) 100% Spain Euro 3x50 MW A/Baa1/A- 2010 13/13/14 Solaben 1 & 6 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2013 17/17 Seville PV Renewable (Solar) 80% (4) Spain Euro 1 MW A/Baa1/A- 2006 14 Italy PV 1 Renewable (Solar) 100% Italy Euro 1.6 MW BBB/Baa3/BBB 2010 9 Italy PV 2 Renewable (Solar) 100% Italy Euro 2.1 MW BBB/Baa3/BBB 2011 9 Italy PV 3 Renewable (Solar) 100% Italy Euro 2.5 MW BBB/Baa3/BBB 2012 10 Kaxu Renewable (Solar) 51% (5) South Africa Rand 100 MW BB-/Ba2/BB- (13) 2015 13 Calgary Efficient natural gas &heat 100% Canada CAD 55 MWt ~41% A+ or higher (14) 2010 19 ACT Efficient natural gas & heat 100% Mexico USD 300 MW BBB/ Ba3/BB- 2013 11 Monterrey Efficient natural gas &heat 30% Mexico USD 142 MW Not rated 2018 17 ATN (15) Transmission line 100% Peru USD 379 miles BBB+/Baa1/BBB 2011 19 ATS Transmission line 100% Peru USD 569 miles BBB+/Baa1/BBB 2014 22 ATN 2 Transmission line 100% Peru USD 81 miles Not rated 2015 11 Quadra 1 & 2 Transmission line 100% Chile USD 49 miles/32 miles Not rated 2014 13/13 Palmucho Transmission line 100% Chile USD 6 miles BBB/ -- /A- 2007 16 Chile TL3 Transmission line 100% Chile USD 50 miles A/A1/A- 1993 Regulated Skikda Water 34.2% (6) Algeria USD 3.5 M ft3/day Not rated 2009 12 Honaine Water 25.5% (7) Algeria USD 7 M ft3/day Not rated 2012 16 Tenes Water 51% (8) Algeria USD 7 M ft3/day Not rated 2015 18 (1) 65% of the shares in Chile PV 1 and Chile PV 2 are indirectly held by financial partners through the renewable energy platform of the Company in Chile. (2) Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3. (3) JGC holds 13% of the shares in each of Solacor 1 and Solacor 2. (4) Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV. (5) Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%). (6) Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.8%. (7) Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. (8) Algerian Energy Company, SPA owns 49% of Tenes. (9) Certain contracts denominated in U.S. dollars are payable in local currency. (10) Reflects the counterparty’s credit ratings issued by Standard & Poor’s Ratings Services, or S&P, Moody’s Investors Service Inc., or Moody’s, and Fitch Ratings Ltd, or Fitch. (11) Refers to the credit rating of two Community Choice Aggregators: Silicon Valley Clean Energy and Monterrey Bar Community Power, both with A Rating from S&P and Southern California Public Power Authority. The third off-taker is not rated. (12) Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. (13) Refers to the credit rating of the Republic of South Africa. The off-taker is Eskom, which is a state-owned utility company in South Africa. (14) Refers to the credit rating of a diversified mix of 22 high credit quality clients (~41% A+ rating or higher, the rest is unrated). (15) Including ATN Expansion 1 & 2. (16) As of December 31, 2021. (*) Commercial Operation Date. The Kaxu project financing arrangement contains cross-default provisions related to Abengoa such that debt defaults by Abengoa, subject to certain threshold amounts and/or a restructuring process, could trigger a default under the Kaxu project financing arrangement. The insolvency filing by the individual company Abengoa S.A. in February 2021 represents a theoretical event of default under the Kaxu project finance agreement. In September 2021, the Company obtained a waiver for such theoretical event of default which was conditional upon the replacement of the operation and maintenance supplier of the plant. On February 1, 2022, the Company transferred the employees performing the operation and maintenance services to an Atlantica subsidiary. The waiver has been extended until April 30, 2022 and is subject to the lenders receiving certain documentation from the Company, including formal evidence of the approval by the client and the department of energy of South Africa of the operation and maintenance internalization and the Company is currently working on obtaining such documentation. Although the Company does not expect the acceleration of debt to be declared by the credit entities, as of December 31, 2021 Kaxu did not have what International Accounting Standards define as an unconditional right to defer the settlement of the debt for at least twelve months, as the cross-default provisions make that right conditional. Therefore, Kaxu total debt (Note 15) has been presented as current in the Consolidated Financial Statements of the Company as of December 31, 2021 for an amount of $315 million, in accordance with International Accounting Standards 1 (“IAS 1”), “Presentation of Financial Statements”. Outbreak of COVID-19 The outbreak of the COVID-19 coronavirus disease (“COVID-19”) was declared a pandemic by the World Health Organization in March 2020 and continues to spread in key markets of the Company. Main risks and uncertainties identified by the Company, which may affect its business, financial condition, results of operations and cash flows, are: - COVID-19 can affect the operation and maintenance activities of the Company. The Company may experience delays in certain operation and maintenance activities, or certain activities may take longer than usual. - The rapid increase in demand in 2021 after the slowdown in 2020 caused tensions in the supply chains, including delays to obtain some components and increased prices. If the Company was to experience a shortage of or inability to acquire critical spare parts, it could incur significant delays in returning facilities to full operation. Supply chain tensions may also affect its projects in development and construction where the Company can experience delays or an increase in prices of equipment and materials required for the construction of new assets. - The Company could also experience commercial disputes with its clients, suppliers and partners related to implications of COVID-19 in contractual relations. All the risks referred to can cause delays in distributions from its assets to the holding company. - Many governments have implemented and may continue to implement stimulus measures to reduce the negative impact of COVID-19 in the economy. In many cases, these measures may increase government spending which may translate into increased tax pressure on companies in the countries where the Company operates. Measures taken by the Company so far have focused on reinforcing safety measures in all its assets while it continues to provide a reliable service to its clients. For example, the Company has implemented the use of additional protection equipment, reinforced access control to its plants, reduced contact between employees, changed shifts, tested employees, identified and isolated potential cases together with their close contacts and taken additional measures to increase safety measures for its employees and operation and maintenance suppliers’ employees working at its assets. The Company has also reinforced its physical and cyber-security measures. The Company has implemented protocols to decide which offices to keep open and under what limitations, depending on health and safety indicators in each specific region. COVID-19 did not have any material impact on the business disclosed in these Consolidated Financial Statements. The Consolidated Financial Statements were approved by the Board of Directors of the Company on February 25, 2022.

Significant accounting policies

Significant accounting policies	12 Months Ended
Significant accounting policies	Dec. 31, 2021
Significant accounting policies [Abstract]
Significant accounting policies	Note 2.- Significant accounting policies 2.1 Basis of preparation These Consolidated Financial Statements are presented in accordance with the International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). The Consolidated Financial Statements are presented in U.S. dollars, which is the Company’s functional and presentation currency. Amounts included in these Consolidated Financial Statements are all expressed in thousands of U.S. dollars, unless otherwise indicated. The Company presents assets and liabilities in the statement of financial position based on current/non-current classification. An asset or liability is current when it is expected or due to be realized within twelve months after the reporting period. Application of new accounting standards a) Standards, interpretations and amendments effective from January 1, 2021 under IFRS-IASB, applied by the Company in the preparation of these Consolidated Financial Statements: The applications of these amendments have not had any impact on these financial statements. Interest Rate Benchmark Reform – Phase 2: Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16. These amendments are mandatory for annual periods beginning on or after January 1, 2021 under IFRS-IASB. The amendments provide temporary reliefs which address the financial reporting effects when an interbank offered rate (“IBOR”) is replaced with an alternative risk-free interest rate (“RFR”). The amendments include the following practical expedients: - A practical expedient to require contractual changes, or changes to cash flows that are directly required by the reform, to be treated as changes to a floating interest rate, equivalent to a movement in a market rate of interest. - Permit changes required by IBOR reform to be made to hedge designations and hedge documentation without the hedging relationship being discontinued. The Company intends to use the practical expedients in future periods if they become applicable. b) Standards, interpretations and amendments published by the IASB that will be effective for periods beginning on or after January 1, 2022: The Company does not anticipate any significant impact on the Consolidated Financial Statements derived from the application of the new standards and amendments that will be effective for annual periods beginning on or after January 1, 2021, although it is currently still in the process of evaluating such application. The Company has not early adopted any standard, interpretation or amendment that has been issued but is not yet effective. Effect of IBOR reform Following the financial crisis, the reform and replacement of benchmark interest rates such as LIBOR and IBORs has become a priority for global regulators. There remains some uncertainty around the timing and precise nature of these changes. The Company currently has several contracts which reference LIBOR and extend beyond 2021. These contracts are disclosed within the tables below. It is currently expected that alternative RFRs will replace LIBOR. There remain key differences between LIBOR and RFRs. LIBOR is a ‘term rate’, which means that it is published for a borrowing period (such as three months or six months) and is ‘forward looking’, because it is published at the beginning of the borrowing period. RFRs may be based on overnight rates from actual transactions and published at the end of the overnight borrowing period. Furthermore, LIBOR includes a credit spread over the risk-free rate, which RFRs currently may not. To transition existing contracts and agreements that reference LIBOR to RFRs, adjustments for term differences and credit differences might need to be applied to RFRs, to enable the two benchmark rates to be economically equivalent on transition. At the time of reporting, industry working groups are reviewing methodologies for calculating adjustments between LIBOR and RFRs. Risks arising from the transition relate principally to the potential impact of rate differences if the debt and related hedging instruments do not transition to the new benchmark interest rate at the same time and/or the rates move by different amounts. This could result in hedge ineffectiveness and a net cash expense to the Company as a result of the IBOR transition. The following table contains details of the financial instruments that the Company holds as of December 31, 2021 which reference LIBOR and have not yet transitioned to RFRs: Carrying amount as of December 31, 2021 Assets Liabilities Non-derivative assets and liabilities referenced to LIBOR Measured at amortized cost Project debt - 1,068,501 Total non-derivatives items - 1,068,501 Derivatives - 62,571 Total assets and liabilities referenced to LIBOR - 1,131,072 The following table contains details of only the hedging instruments used in the Company's hedging strategies which reference LIBOR and have not yet transitioned to RFRs, such that relief(s) of phase 1 and phase 2 amendments to IFRS 9 and IFRS 7 for IBOR reform, effective January 1 st st Carrying amount as of December 31, 2021 Notional Assets Liabilities Balance sheet line item(s) 2021 changes in fair value used for calculating hedge ineffectiveness Cash flow hedge Interest rate swaps 939,670 - 62,571 Derivative liabilities 30,013 Total cash flow hedges 939,670 - 62,571 30,013 In calculating the change in fair value attributable to the hedged risk of floating-rate debt, the Company has made the following assumptions that reflect its current expectations: - The floating-rate debt will move to RFRs during 2022, and the spread will be similar to the spread included in the interest rate swap used as the hedging instrument; - No other changes to the terms of the floating-rate debt are anticipated; 2.2. Principles to include and record companies in the consolidated financial statements Companies included in these Consolidated Financial Statements are accounted for as subsidiaries as long as Atlantica has control over them and are accounted for as investments under the equity method as long as Atlantica has significant influence over them, in the periods presented. a) Controlled entities Control is achieved when the Company: • Has power over the investee; • Is exposed, or has rights, to variable returns from its involvement with the investee; and • Has the ability to use its power to affect its returns. The Company reassesses whether or not it controls an investee when facts and circumstances indicate that there are changes to one or more of the three elements of control listed above. The Company uses the acquisition method to account for business combinations of companies previously controlled by a third party. According to this method, identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. Any contingent consideration is recognized at fair value at the acquisition date and subsequent changes in its fair value are recognized in accordance with IFRS 9 in profit or loss. Acquisition related costs are expensed as incurred. The Company recognizes any non-controlling interest in the acquiree either at fair value or at the non-controlling interest’s proportionate share of the acquirer’s net assets on an acquisition by acquisition basis. All assets and liabilities between entities of the group, equity, income, expenses, and cash flows relating to transactions between entities of the group are eliminated in full. b) Investments accounted for under the equity method An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but is not control or joint control over those policies. The results and assets and liabilities of associates are incorporated in these financial statements using the equity method of accounting. Under the equity method, an investment in an associate is initially recognized in the statement of financial position at cost and adjusted thereafter to recognize changes in Atlantica´s share of net assets of the associate since the acquisition date. Any goodwill relating to the associate is included in the carrying amount of the investment and is not tested for impairment separately. Controlled entities and associates included in these financial statements as of December 31, 2021 and 2020 are set out in appendices. 2.3. Contracted concessional assets Contracted concessional assets correspond to the assets of the Company recorded as intangible or financial assets in accordance with IFRIC 12, property plant and equipment in accordance with IAS 16 and financial asset in accordance with IFRS 16. The assets accounted for by the Company as concessions include renewable energy assets, transmission lines, efficient natural gas assets and water plants. The useful life of these assets is approximately the same as the length of the concession arrangement. The infrastructure used in a concession can be classified as an intangible asset or a financial asset, depending on the nature of the payment entitlements established in the agreement. The application of IFRIC 12 requires extensive judgement in relation to, among other factors, (i) the identification of certain infrastructures and contractual agreements in the scope of IFRIC 12, (ii) an understanding of the nature of the payments in order to determine the classification of the infrastructure as a financial asset or as an intangible asset and (iii) the timing and recognition of revenue from construction and concessionary activity. Under the terms of contractual arrangements within the scope of this interpretation, the operator shall recognize and measure revenue in accordance with IFRS 15 for the services it performs. a) Intangible asset The Company recognizes an intangible asset to the extent that it receives a right to charge final customers for the use of the infrastructure. This intangible asset is subject to the provisions of IAS 38 and is amortized linearly, taking into account the estimated period of commercial operation of the infrastructure which coincides with the concession period. Once the infrastructure is in operation, the treatment of income and expense is as follows: - Revenues from the updated annual revenue for the contracted concession, as well as revenues from operations and maintenance services are recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. - Operating and maintenance costs and general overheads and administrative costs are recorded in accordance with the nature of the cost incurred (amount due) in each period. b) Financial asset The Company recognizes a financial asset when demand risk is assumed by the grantor, to the extent that the concession holder has an unconditional right to receive payments for the asset. This asset is recognized at the fair value of the construction services provided, considering upgrade services in accordance with IFRS 15, if any. The financial asset is subsequently recorded at amortized cost calculated according to the effective interest method, using a theoretical internal return rate specific to the asset. Revenue from operations and maintenance services is recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. Allowance for expected credit losses According to IFRS 9, Atlantica recognizes an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive. There are two main approaches to applying the ECL model according to IFRS 9: the general approach which involves a three stage approach, and the simplified approach, which can be applied to trade receivables, contract assets and lease receivables. Atlantica applies the simplified approach. Under this approach, there is no need to monitor for significant increases in credit risk and entities will be required to measure lifetime expected credit losses at the end of each reporting period. The key elements of the ECL calculations, based on external sources of information, are the following: - the Probability of Default (“PD”) is an estimate of the likelihood of default over a given time horizon. Atlantica calculates PD based on Credit Default Swaps spreads (“CDS”); - the Exposure at Default (“EAD”) is an estimate of the exposure at a future default date; - the Loss Given Default (“LGD”) is an estimate of the loss arising in the case where a default occurs at a given time. It is based on the difference between the contractual cash flows due and those that the Company would expect to receive. It is expressed as a percentage of the EAD. c) Property, plant and equipment Property, plant and equipment is measured at historical cost, including all expenses directly attributable to the acquisition, less depreciation and impairment losses, with the exception of land, which is presented net of any impairment losses. Once the infrastructure is in operation, the treatment of income and expenses is the same as the one described above for intangible asset. d) Right-of-use assets Main right of use agreements correspond to land rights. The Company recognizes right-of-use assets under IFRS 16, at the commencement date of the lease (i.e. the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities (Note 2.11). The cost of right-of-use assets includes the amount of lease liabilities recognised, initial direct costs incurred, and lease payments made at or before the commencement date less any lease incentives received. Right-of-use assets are depreciated on a straight-line basis over the shorter of the lease term and the estimated useful lives of the assets. e) R evenue Recognition According to IFRS 15, Revenue from Contracts with Customers, the Company assesses the goods and services promised in the contracts with the customers and identifies as a performance obligation each promise to transfer to the customer a good or service (or a bundle of goods or services). In the case of contracts related to intangible or financial assets under IFRIC 12, the performance obligation of the Company is the operation of the asset. The contracts between the parties set the price of the service in an orderly transaction and therefore corresponds to the fair value of the service provided. The service is satisfied over time. The same conclusion applies to concessional assets that are classified as tangible assets under IAS 16 or leases under IFRS 16. All of the transaction prices of assets under IFRIC 12 are fixed and included as part of the long-term PPAs of the Company as disclosed in Appendix III-2. In the case of financial asset under IFRIC 12, the financial asset accounts for the payments to be received from the client over the residual life of the contract, discounted at a theoretical internal rate of return for the project. In each period, the financial asset is reduced by the amounts received from the client and increased by any capital expenditure that the project may incur and by the effect of unwinding the discount of the financial asset at the theoretical internal rate of return. The increase of the financial asset deriving from the unwinding of the discount of the financial asset is recorded as revenue in each period. Revenue will therefore differ from the actual billings made by the asset to the client in each period. In the case of Spain, according to Royal Decree 413/2014, solar electricity producers receive: (i) the market price for the power they produce, (ii) a payment based on the standard investment cost for each type of plant (without any relation whatsoever to the amount of power they generate) and (iii) an “operating payment” (in €/MWh produced). The principle driving this economic regime is that the payments received by a renewable energy producer should be equivalent to the costs that they are unable to recover on the electricity pool market where they compete with non-renewable technologies. This economic regime seeks to allow a “well-run and efficient enterprise” to recover the costs of building and running a plant, plus a reasonable return on investment (project investment rate of return). Some of the Company´s assets in Spain are receiving a remuneration based on a 7.09% reasonable rate of return until December 31, 2025 while others are receiving a remuneration based on a 7.398% reasonable rate of return until December 31, 2031. 2.4. Asset impairment Atlantica reviews its contracted concessional assets to identify any indicators of impairment at least annually, except for ECL assessment for financial assets which is discussed in note 2.3. When impairment indicators exist, the company calculates the recoverable amount of the asset. The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use, defined as the present value of the estimated future cash flows to be generated by the asset. In the event that the asset does not generate cash flows independently of other assets, the Company calculates the recoverable amount of the Cash Generating Unit (‘CGU’) to which the asset belongs. When the carrying amount of the CGU to which these assets belong is higher than its recoverable amount, the assets are impaired. Assumptions used to calculate value in use include a discount rate and projections considering real data based in the contracts terms and projected changes in both selling prices and costs. The discount rate is estimated by Management, to reflect both changes in the value of money over time and the risks associated with the specific CGU. For contracted concessional assets, with a defined useful life and with a specific financial structure, cash flow projections until the end of the project are considered and no relevant terminal value is assumed. Contracted concessional assets have a contractual structure that permits the Company to estimate quite accurately the costs of the project and revenue during the life of the project. Projections take into account real data based on the contract terms and fundamental assumptions based on specific reports prepared internally and third-party reports, assumptions on demand and assumptions on production. Additionally, assumptions on macro-economic conditions are taken into account, such as inflation rates, future interest rates, etc. and sensitivity analyses are performed over all major assumptions which can have a significant impact in the value of the asset. Cash flow projections of CGUs are calculated in the functional currency of those CGUs and are discounted using rates that take into consideration the risk corresponding to each specific country and currency. Taking into account that in most CGUs the specific financial structure is linked to the financial structure of the projects that are part of those CGUs, the discount rate used to calculate the present value of cash-flow projections is based on the weighted average cost of capital (WACC) for the type of asset, adjusted, if necessary, in accordance with the business of the specific activity and with the risk associated with the country where the project is performed. In any case, sensitivity analyses are performed, especially in relation to the discount rate used and fair value changes in the main business variables, in order to ensure that possible changes in the estimates of these items do not impact the recovery of recognized assets. In the event that the recoverable amount of an asset is lower than its carrying amount, an impairment charge for the difference would be recorded in the income statement under the item “Depreciation, amortization and impairment charges”. An assessment is made at each reporting date to determine whether there is an indication that previously recognized impairment losses no longer exist or have decreased. If such indication exists, the Company estimates the CGU’s recoverable amount. A previously recognized impairment loss is reversed only if there has been a change in the assumptions used to determine the asset’s recoverable amount since the last impairment loss was recognized. The reversal is limited so that the carrying amount of the asset does not exceed its recoverable amount, nor exceed the carrying amount that would have been determined, net of depreciation, had no impairment loss been recognized for the asset in prior years. Such reversal is recognized in the income statement. 2.5. Loans and accounts receivable Loans and accounts receivable are non-derivative financial assets with fixed or determinable payments, not listed on an active market. In accordance with IFRIC 12, certain assets under concessions qualify as financial assets and are recorded as is described in Note 2.3. Pursuant to IFRS 9, an impairment loss is recognized if the carrying amount of these assets exceeds the present value of future cash flows discounted at the initial effective interest rate. Loans and accounts receivable are initially recognized at fair value plus transaction costs and are subsequently measured at amortized cost in accordance with the effective interest rate method. Interest calculated using the effective interest rate method is recognized under other financial income within financial income. 2.6. Derivative financial instruments and hedging activities Derivatives are recognized at fair value in the statement of financial position. The Company maintains both derivatives designated as hedging instruments in hedging relationships, and derivatives to which hedge accounting is not applied. When hedge accounting is applied, hedging strategy and risk management objectives are documented at inception, as well as the relationship between hedging instruments and hedged items. Effectiveness of the hedging relationship needs to be assessed on an ongoing basis. Effectiveness tests are performed prospectively at inception and at each reporting date. The Company analyses on each date if all these requirements are met: - there is an economic relationship between the hedged item and the hedging instrument; - the effect of credit risk does not dominate the value changes that result from that economic relationship; and - the hedge ratio of the hedging relationship is the same as that resulting from the quantity of the hedged item that the Company actually hedges and the quantity of the hedging instrument that the Company uses to hedge that quantity of hedged item. Ineffectiveness is measured following the accumulated dollar offset method. In all cases, current Company´s hedging relationships are considered cash flow hedges. Under this model, the effective portion of changes in fair value of derivatives designated as cash flow hedges are recorded temporarily in equity and are subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffective portion of the hedged transaction is recorded in the consolidated income statement as it occurs. When interest rate options are designated as hedging instruments, the time value is excluded from the hedging instrument as permitted by IFRS 9. Changes in the effective portion of the intrinsic are recorded in equity and subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffectiveness is recorded as financial income or expense as it occurs. Changes in options time value is recorded as cost of hedging. More precisely, considering that the hedged items are, in all cases, time period hedged item, changes in time value is recognized in other comprehensive income to the extent that it relates to the hedged item. The time value at the date of designation of the option as a hedging instrument, to the extent that it relates to the hedged item, is amortized on a systematic and rational basis over the period during which the hedge adjustment for the option’s intrinsic value could affect profit or loss. When the hedging instrument matures or is sold, or when it no longer meets the requirements to apply hedge accounting, accumulated gains and losses recorded in equity remain as such until the forecast transaction is ultimately recognized in the income statement. However, if it becomes unlikely that the forecast transaction will actually take place, the accumulated gains and losses in equity are recognized immediately in the income statement. Any change in fair value of derivatives instruments to which hedge accounting is not applied is directly recorded in the income statement. 2.7. Fair value estimates Financial instruments measured at fair value are presented in accordance with the following level classification based on the nature of the inputs used for the calculation of fair value: - Level 1: Inputs are quoted prices in active markets for identical assets or liabilities. - Level 2: Fair value is measured based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (i.e. derived from prices). - Level 3: Fair value is measured based on unobservable inputs for the asset or liability. In the event that prices cannot be observed, management shall make its best estimate of the price that the market would otherwise establish based on proprietary internal models which, in the majority of cases, use data based on observable market parameters as significant inputs (Level 2) but occasionally use market data that is not observed as significant inputs (Level 3). Different techniques can be used to make this estimate, including extrapolation of observable market data. The best indication of the initial fair value of a financial instrument is the price of the transaction, except when the value of the instrument can be obtained from other transactions carried out in the market with the same or similar instruments, or valued using a valuation technique in which the variables used only include observable market data, mainly interest rates. Differences between the transaction price and the fair value based on valuation techniques that use data that is not observed in the market, are not initially recognized in the income statement. Atlantica derivatives correspond primarily to the interest rate swaps designated as cash flow hedges, which are classified as Level 2. Description of the valuation method Interest rate swap valuations consist in valuing separately the swap part of the contract and the credit risk. The methodology used by the market and applied by Atlantica to value interest rate swaps is to discount the expected future cash flows according to the parameters of the contract. Variable interest rates, which are needed to estimate future cash flows, are calculated using the curve for the corresponding currency and extracting the implicit rates for each of the reference dates in the contract. These estimated flows are discounted with the swap zero curve for the reference period of the contract. The effect of the credit risk on the valuation of the interest rate swaps depends on the future settlement. If the settlement is favorable for the Company, the counterparty credit spread will be incorporated to quantify the probability of default at maturity. If the expected settlement is negative for the Company, its own credit risk will be applied to the final settlement. Classic models for valuing interest rate swaps use deterministic valuation of the future of variable rates, based on future outlooks. When quantifying credit risk, this model is limited by considering only the risk for the current paying party, ignoring the fact that the derivative could change sign at maturity. A payer and receiver swaption model is proposed for these cases. This enables the associated risk in each swap position to be reflected. Thus, the model shows each agent’s exposure, on each payment date, as the value of entering into the ‘tail’ of the swap, i.e. the live part of the swap. Variables (Inputs) Interest rate derivative valuation models use the corresponding interest rate curves for the relevant currency and underlying reference in order to estimate the future cash flows and to discount them. Market prices for deposits, futures contracts and interest rate swaps are used to construct these curves. Interest rate options (caps and floors) also use the volatility of the reference interest rate curve. To estimate the credit risk of the counterparty, the credit default swap (CDS) spreads curve is obtained in the market for important individual issuers. For less liquid issuers, the spreads curve is estimated using comparable CDSs or based on the country curve. To estimate proprietary credit risk, prices of debt issues in the market and CDSs for the sector and geographic location are used. The fair value of the financial instruments that results from the aforementioned internal models takes into account, among other factors, the terms and conditions of the contracts and observable market data, such as interest rates, credit risk and volatility. The valuation models do not include significant levels of subjectivity, since these methodologies can be adjusted and calibrated, as appropriate, using the internal calculation of fair value and subsequently compared to the corresponding actively traded price. However, valuation adjustments may be necessary when the listed market prices are not available for comparison purposes. 2.8. Trade and other receivables Trade and other receivables are amounts due from customers for sales in the normal course of business. They are recognized initially at fair value and subsequently measured at amortized cost using the effective interest rate method, less allowance for doubtful accounts. Trade receivables due in less than one year are carried at their face value at both initial recognition and subsequent measurement, provided that the effect of not discounting flows is not significant. An allowance for doubtful accounts is recorded when there is objective evidence that the Company will not be able to recover all amounts due as per the original terms of the receivables. The Company has established a provision matrix that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment. 2.9. Cash and cash equivalents Cash and cash equivalents include cash in hand, cash in bank and other highly-liquid current investments with an original maturity of three months or less which are held for the purpose of meeting short-term cash commitments. 2.10. Grants Grants are recognized at fair value when it is considered that there is a reasonable assurance that the grant will be received and that the necessary qualifying conditions, as agreed with the entity assigning the grant, will be adequately complied with. Grants are recorded as liabilities in the consolidated statement of financial position and are recognized in “Other operating income” in the consolidated income statement based on the period necessary to match them with the costs they intend to compensate. In addition, as described in Note 2.11 below, grants correspond also to loans with interest rates below market rates, for the initial difference between the fair value of the loan and the proceeds received. 2.11. Loans and borrowings Loans and borrowings are initially recognized at fair value, net of transaction costs incurred. Borrowings are subsequently measured at amortized cost and any difference between the proceeds initially received (net of transaction costs incurred in obtaining such proceeds) and the repayment value is recognized in the consolidated income statement over the duration of the borrowing using the effective interest rate method. In the case of modification of terms of loans and borrowings, the Company determines whether the modification constitutes an exchange or an extinguishment of the debt instrument. In determining whether there is an exchange, the Company evaluates whether the redemption of the old debt and the issuance of new debt were negotiated in contemplation of one another (qualitative assessment) and performs the 10 per cent test to determine if the terms of the modified debt are substantially different (the net present value of the modified

Financial risk management

Financial risk management	12 Months Ended
Financial risk management	Dec. 31, 2021
Financial risk management [Abstract]
Financial risk management	Note 3.- Financial risk management Atlantica’s activities are exposed to various financial risks: market risk (including currency risk and interest rate risk), credit risk and liquidity risk. Risk is managed by the Company’s Risk Finance and Compliance Departments, which are responsible for identifying and evaluating financial risks quantifying them by project, region and company, in accordance with mandatory internal management rules. Written internal policies exist for global risk management, as well as for specific areas of risk. In addition, there are official written management regulations regarding key controls and control procedures for each company and the implementation of these controls is monitored through internal audit procedures. a) Market risk The Company is exposed to market risk, such as movement in foreign exchange rates and interest rates. All of these market risks arise in the normal course of business and the Company does not carry out speculative operations. For the purpose of managing these risks, the Company uses a series of interest rate swaps and options, and currency options. None of the derivative contracts signed has an unlimited loss exposure. - Interest rate risk Interest rate risk arises when the Company’s activities are exposed to changes in interest rates, which arises from financial liabilities at variable interest rates. The main interest rate exposure for the Company relates to the variable interest rate with reference to the Libor, Euribor and RFRs. To minimize the interest rate risk, the Company primarily uses interest rate swaps and interest rate options (caps), which, in exchange for a fee, offer protection against an increase in interest rates. The Company does not use derivatives for speculative purposes. As a result, the notional amounts hedged, strikes contracted and maturities, depending on the characteristics of the debt on which the interest rate risk is being hedged, are very diverse, including the following: o Project debt in Euros: the Company hedges between 75% and 100% of the notional amount with headges maturing up to 2038 and average guaranteed strike interest rates of between 0.00% and 4.87%. o Project debt in U.S. dollars: the Company hedges between 75% and 100% of the notional amount with headges maturing up to 2038 and average guaranteed strike interest rates of between 0.86% and 5.89%. In connection with the interest rate derivative positions of the Company, the most significant impacts on these Consolidated Financial Statements are derived from the changes in EURIBOR or LIBOR, which represent the reference interest rate for most of the debt of the Company. In the event that Euribor and Libor had risen by 25 basis points as of December 31, 2021, with the rest of the variables remaining constant, the effect in the consolidated income statement would have been a loss of $2,495 thousand (a loss of $2,897 thousand in 2020 and a loss of $2,745 thousand in 2019) and an increase in hedging reserves of $22,440 thousand ($22,130 thousand in 2020 and $27,570 thousand in 2019). The increase in hedging reserves would be mainly due to an increase in the fair value of interest rate swaps designated as hedges. A breakdown of the interest rates derivatives as of December 31, 2021 and 2020, is provided in Note 9. - Currency risk The main cash flows in the entities included in these Consolidated Financial Statements are cash collections arising from long-term contracts with clients and debt payments arising from project finance repayment. Given that financing of the projects is always closed in the same currency in which the contract with client is signed, a natural hedge exists for the main operations of the Company. In addition, the Company policy is to contract currency options with leading financial institutions, which guarantee a minimum Euro-U.S. dollar exchange rate on the net distributions expected from solar assets in Spain. The net Euro exposure is 100% hedged for the coming 12 months and 75% for the following 12 months on a rolling basis. b) Credit risk The Company considers that it has a limited credit risk with clients as revenues primarily derive from power purchase agreements with electric utilities and state-owned entities. c) Liquidity risk Atlantica’s liquidity and financing policy is intended to ensure that the Company maintains sufficient funds to meet its financial obligations as they fall due. Project finance borrowing permits the Company to finance the project through project debt and thereby insulate the rest of its assets from such credit exposure. The Company incurs in project-finance debt on a project-by-project basis. The repayment profile of each project is established on the basis of the projected cash flow generation of the business. This ensures that sufficient financing is available to meet deadlines and maturities, which mitigates the liquidity risk significantly. Corporate and Project debt repayment schedules are disclosed in Note 14 and 15, respectively.

Financial information by segmen

Financial information by segment	12 Months Ended
Financial information by segment	Dec. 31, 2021
Financial information by segment [Abstract]
Financial information by segment	Note 4.- Financial information by segment Atlantica’s segment structure reflects how management currently makes financial decisions and allocates resources. Its operating and reportable segments are based on the following geographies where the contracted concessional assets are located: North America, South America and EMEA. In addition, based on the type of business, as of December 31, 2021, the Company had the following business sectors: Renewable energy, Efficient natural gas and Heat, Transmission lines and Water. The business sector “Efficient natural gas” has been renamed “Efficient natural gas and Heat” in these Consolidated Financial Statements as it includes the Calgary District Heating asset acquired in May 2021 (Note 5). Atlantica’s Chief Operating Decision Maker (CODM), which is the CEO, assesses the performance and assignment of resources according to the identified operating segments. The CODM considers the revenue as a measure of the business activity and the Adjusted EBITDA as a measure of the performance of each segment. Adjusted EBITDA is calculated as profit/(loss) for the year attributable to the parent company, after adding back loss/(profit) attributable to non-controlling interest, income tax expense, financial expense (net), depreciation, amortization and impairment charges of entities included in the these Consolidated Financial Statements and depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica's equity ownership). Adjusted EBITDA previously excluded share of profit/(loss) of associates carried under the equity method and did not include depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro-rata of Atlantica’s equity ownership). Prior periods have been presented accordingly. In order to assess performance of the business, the CODM receives reports of each reportable segment using revenue and Adjusted EBITDA. Net interest expense evolution is assessed on a consolidated basis. Financial expense and amortization are not taken into consideration by the CODM for the allocation of resources. In the year ended December 31, 2021, Atlantica had one customer with revenues representing more than 10% of total revenue, in the renewable energy business sector. In the year ended December 31, 2020, Atlantica had four customers with revenues representing more than 10% of the total revenue, three in the renewable energy and one in the efficient natural gas and heat business sectors. a) The following tables show Revenues and Adjusted EBITDA by operating segments and business sectors for the years 2021, 2020 and 2019: Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Geography 2021 2020 2019 2021 2020 2019 North America 395,775 330,921 332,965 311,803 279,365 307,242 South America 154,985 151,460 142,207 119,547 120,023 115,346 EMEA 660,989 530,879 536,280 393,038 396,735 398,967 Total 1,211,749 1,013,260 1,011,452 824,388 796,123 821,555 Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Business sectors 2021 2020 2019 2021 2020 2019 Renewable energy 928,525 753,089 761,090 602,583 576,285 604,080 Efficient natural gas & Heat 123,692 111,030 122,281 99,935 101,006 109,200 Transmission lines 105,680 106,042 103,453 83,635 87,272 85,657 Water 53,852 43,099 24,629 38,235 31,560 22,618 Total 1,211,749 1,013,260 1,011,452 824,388 796,123 821,555 The reconciliation of segment Adjusted EBITDA with the profit/(loss) attributable to the parent company is as follows: For the year ended December 31, 2021 2020 2019 Profit/(loss) attributable to the Company (30,080 ) 11,968 62,135 Profit attributable to non-controlling interests 19,162 4,906 12,473 Income tax expense 36,220 24,877 30,950 Financial expense, net 340,892 331,810 402,348 Depreciation, amortization, and impairment charges 439,441 408,604 310,755 Depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica's equity ownership) 18,753 13,958 2,894 Total segment Adjusted EBITDA 824,388 796,123 821,555 b) The assets and liabilities by geography and business sector at the end of 2021 and 2020 are as follows: Assets and liabilities by geography as of December 31, 2021: North America South America EMEA Balance as of December 31, 2021 Assets allocated Contracted concessional assets 3,355,669 1,231,276 3,434,623 8,021,568 Investments carried under the equity method 253,221 - 41,360 294,581 Current financial investments 135,224 28,155 44,000 207,379 Cash and cash equivalents (project companies) 171,744 74,149 287,655 533,548 Subtotal allocated 3,915,858 1,333,580 3,807,638 9,057,076 Unallocated assets Other non-current assets 268,876 Other current assets (including cash and cash equivalents at holding company level) 425,978 Subtotal unallocated 694,854 Total assets 9,751,930 North America South America EMEA Balance as of December 31, 2021 Liabilities allocated Long-term and short-term project debt 1,792,739 887,497 2,355,957 5,036,193 Grants and other liabilities 1,051,679 14,445 197,620 1,263,744 Subtotal allocated 2,844,418 901,942 2,553,577 6,299,937 Unallocated liabilities Long-term and short-term corporate debt 1,023,071 Other non-current liabilities 532,312 Other current liabilities 148,005 Subtotal unallocated 1,703,388 Total liabilities 8,003,325 Equity unallocated 1,748,605 Total liabilities and equity unallocated 3,451,993 Total liabilities and equity 9,751,930 Assets and liabilities by geography as of December 31, 2020: North America South America EMEA Balance as of December 31, 2020 Assets allocated Contracted concessional assets 3,073,785 1,211,952 3,869,681 8,155,418 Investments carried under the equity method 74,660 - 41,954 116,614 Current financial investments 129,264 27,836 42,984 200,084 Cash and cash equivalents (project companies) 206,344 70,861 255,530 532,735 Subtotal allocated 3,484,053 1,310,649 4,210,149 9,004,851 Unallocated assets Other non-current assets 242,044 Other current assets (including cash and cash equivalents at holding company level) 691,459 Subtotal unallocated 933,503 Total assets 9,938,354 North America South America EMEA Balance as of December 31, 2020 Liabilities allocated Long-term and short-term project debt 1,623,284 902,500 2,711,830 5,237,614 Grants and other liabilities 1,078,974 11,355 139,438 1,229,767 Subtotal allocated 2,702,258 913,855 2,851,268 6,467,381 Unallocated liabilities Long-term and short-term corporate debt 993,725 Other non-current liabilities 589,107 Other current liabilities 147,260 Subtotal unallocated 1,730,092 Total liabilities 8,197,473 Equity unallocated 1,740,881 Total liabilities and equity unallocated 3,470,973 Total liabilities and equity 9,938,354 Assets and liabilities by business sectors as of December 31, 2021: Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2021 Assets allocated Contracted concessional assets 6,533,408 517,247 805,987 164,926 8,021,568 Investments carried under the equity method 240,302 15,358 - 38,921 294,581 Current financial investments 10,761 128,461 27,813 40,344 207,379 Cash and cash equivalents (project companies) 442,213 25,392 44,574 21,369 533,548 Subtotal allocated 7,226,684 686,458 878,374 265,560 9,057,076 Unallocated assets Other non-current assets 268,876 Other current assets (including cash and cash equivalents at holding company level) 425,978 Subtotal unallocated 694,854 Total assets 9,751,930 Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2021 Liabilities allocated Long-term and short-term project debt 3,857,313 478,724 602,278 97,878 5,036,193 Grants and other liabilities 1,244,346 11,212 5,795 2,391 1,263,744 Subtotal allocated 5,101,659 489,936 608,073 100,269 6,299,937 Unallocated liabilities Long-term and short-term corporate debt 1,023,071 Other non-current liabilities 532,312 Other current liabilities 148,005 Subtotal unallocated 1,703,388 Total liabilities 8,003,325 Equity unallocated 1,748,605 Total liabilities and equity unallocated 3,451,993 Total liabilities and equity 9,751,930 Assets and liabilities by business sectors as of December 31, 2020: Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2020 Assets allocated Contracted concessional assets 6,632,611 502,285 842,595 177,927 8,155,418 Investments carried under the equity method 61,866 15,514 30 39,204 116,614 Current financial investments 6,530 124,872 27,796 40,886 200,084 Cash and cash equivalents (project companies) 397,465 67,955 46,045 21,270 532,735 Subtotal allocated 7,098,472 710,626 916,466 279,287 9,004,851 Unallocated assets Other non-current assets 242,044 Other current assets (including cash and cash equivalents at holding company level) 691,459 Subtotal unallocated 933,503 Total assets 9,938,354 Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2020 Liabilities allocated Long-term and short-term project debt 3,992,512 504,293 625,203 115,606 5,237,614 Grants and other liabilities 1,221,176 108 6,040 2,443 1,229,767 Subtotal allocated 5,213,688 504,401 631,243 118,049 6,467,381 Unallocated liabilities Long-term and short-term corporate debt 993,725 Other non-current liabilities 589,107 Other current liabilities 147,260 Subtotal unallocated 1,730,092 Total liabilities 8,197,473 Equity unallocated 1,740,881 Total liabilities and equity unallocated 3,470,973 Total liabilities and equity 9,938,354 c) The amount of depreciation, amortization and impairment charges recognized for the years ended December 31, 2021, 2020 and 2019 are as follows: For the year ended December 31, Depreciation, amortization and impairment by geography 2021 2020 2019 North America (152,946 ) (197,643 ) (116,232 ) South America (57,214 ) (39,191 ) (47,844 ) EMEA (229,281 ) (171,770 ) (146,679 ) Total (439,441 ) (408,604 ) (310,755 ) For the year ended December 31, Depreciation, amortization and impairment by business sectors 2021 2020 2019 Renewable energy (432,138 ) (350,785 ) (286,907 ) Efficient natural gas & Heat 23,910 (26,563 ) 3,102 Transmission lines (31,286 ) (30,889 ) (27,490 ) Water 73 (367 ) 541 Total (439,441 ) (408,604 ) (310,755 )

Business combinations

Business combinations	12 Months Ended
Business combinations	Dec. 31, 2021
Business combinations [Abstract]
Business combinations	Note 5.- Business combinations For the year ended December 31, 2021 On January 6, 2021, the Company completed its second investment through its Chilean renewable energy platform in a 40 MW solar PV plant, Chile PV 2, located in Chile, for approximately $5 million. Atlantica has control over Chile PV 2 under IFRS 10, Consolidated Financial Statements. The acquisition of Chile PV 2 has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations, showing 65% of non-controlling interests. Chile PV 2 is included within the Renewable energy sector and the South America geography. On January 8, 2021, the Company completed the purchase of an additional 42.5% stake in Rioglass, a supplier of spare parts and services to the solar industry, increasing its stake from 15% to 57.5% and gaining control over the business under IFRS 10, Consolidated Financial Statements. The purchase price paid was $8.6 million, and the Company paid an additional $3.7 million (deductible from the final payment) for an option to acquire the remaining 42.5% under the same conditions until September 2021. On July 22, 2021, the Company exercised the option paying an additional $4.8 million, becoming the sole shareholder of the entity. Rioglass is included within the Renewable energy sector and the EMEA geography. The acquisition of Rioglass has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. On April 7, 2021, the Company closed the acquisition of Coso, a 135 MW renewable asset in California. The purchase price paid was $130 million. Atlantica has control over Coso under IFRS 10, Consolidated Financial Statements and its acquisition has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. Coso is included within the Renewable energy sector and the North America geography. On May 14, 2021, the Company closed the acquisition of Calgary District Heating, a district heating asset of approximately 55 MWt in Canada. The purchase price paid was approximately $22.7 million. The acquisition has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. Calgary District Heating is included within the Efficient natural gas and Heat sector and the North America geography. On August 6, 2021, the Company closed the acquisition of Italy PV 1 and Italy PV 2, two solar PV plants in Italy with a combined capacity of 3.7 MW for a total equity investment of $9 million. The acquisition has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. These assets are included within the Renewable energy sector and the EMEA geography. On November 25, 2021, the Company closed the acquisition of La Sierpe, a 20 MW solar PV plant in Colombia for a total equity investment of approximately $23.5 million. The acquisition has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. La Sierpe is included within the Renewable energy sector and the South America geography. On December 14, 2021, the Company closed the acquisition of Italy PV 3, a 2.5 MW solar asset in Italy for a total equity investment of approximately $4.0 million. The acquisition has been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations. Italy PV 3 is included within the Renewable Energy sector and the EMEA geography. The fair value of assets and liabilities consolidated at the effective acquisition date is shown in the following table: Business combinations for the year ended December 31, 2021 Coso Other Total Contracted concessional assets (Note 6) 383,153 158,927 542,080 Deferred tax asset (Note 18) - 4,410 4,410 Other non-current assets 11,024 1,943 12,967 Cash & cash equivalents 6,363 14,649 21,012 Other current assets 14,378 46,679 61,057 Non-current Project debt (Note 15) (248,544 ) (39,808 ) (288,352 ) Current Project debt (Note 15) (13,415 ) (25,366 ) (38,781 ) Deferred tax liabilities (Note 18) - (4,910 ) (4,910 ) Other current and non-current liabilities (22,959 ) (64,825 ) (87,784 ) Non-controlling interests - (8,287 ) (8,287 ) Total net assets acquired at fair value 130,000 83,412 213,412 Asset acquisition – purchase price paid (130,000 ) (80,364 ) (210,364 ) Fair value of previously held 15 - (3,048 ) (3,048 ) Net result of business combinations - - - The purchase price equals the fair value of the net assets acquired. The allocation of the purchase price is provisional as of December 31, 2021 and amounts indicated above may be adjusted during the measurement period to reflect new information obtained about facts and circumstances that existed at the acquisition date that, if known, would have affected the amounts recognized as of December 31, 2021. The measurement period will not exceed one year from the acquisition dates. The amount of revenue contributed by the acquisitions performed during 2021 to the Consolidated Financial Statements of the Company for the year 2021 is $163.5 million, and the amount of profit after tax is $0.8 million. Had the acquisitions been consolidated from January 1, 2021, the consolidated statement of comprehensive income would have included additional revenue of $17.7 million and additional profit after tax of $3.3 million. For the year ended December 31, 2020 On April 3, 2020, the Company completed the investment in a 35% stake in a renewable energy platform in Chile for approximately $4 million and the acquisition of Chile PV 1, a 55 MW solar PV plant, through the platform. Atlantica has control over Chile PV 1 under IFRS 10, Consolidated Financial Statements. The acquisition of Chile PV 1 had been accounted for in these Consolidated Financial Statements in accordance with IFRS 3, Business Combinations, showing 65% of non-controlling interest. Chile PV 1 is included within the Renewable energy sector and the South America geography. On May 31, 2020, the Company obtained the right to appoint the majority of directors of the board of Befesa Agua Tenes, which owns a 51% stake in Tenes, and therefore controls the asset, a water desalination plant in Algeria. The total investment amounted to approximately $19 million as of May 31, 2020. The acquisition had been accounted for in the Consolidated Financial Statements of Atlantica, in accordance with IFRS 3, Business Combinations, showing 49% of non-controlling interest. Tenes is included within the Water sector and the EMEA geography. The fair value of assets and liabilities consolidated at the effective acquisition date is shown in the following table: Business combinations for the year ended December 31, 2020 Contracted concessional assets (Note 6) 172,321 Other non-current assets 356 Cash & cash equivalents 17,646 Other current assets 31,421 Non-current Project debt (Note 15) (149,585 ) Current Project debt (Note 15) (8,680 ) Other current and non-current liabilities (15,561 ) Non-controlling interests (25,308 ) Total net assets acquired at fair value 22,610 Asset acquisition - purchase price (22,610 ) Net result of business combinations - The purchase price equalled the fair value of the net assets acquired. The amount of revenue contributed by the acquisitions performed during 2020 to the Consolidated Financial Statements of the Company for the year 2020 was $22.5 million, and the amount of profit after tax was $6.3 million. Had the acquisitions been consolidated from January 1, 2020, the consolidated statement of comprehensive income would have included additional revenue of $14.7 million and additional profit after tax of $3.7 million. In April and May 2021, the provisional period for the purchase price allocation of Chile PV 1 and Tenes, respectively, closed and did not result in significant adjustments to the initial amounts recognized.

Contracted concessional assets

Contracted concessional assets	12 Months Ended
Contracted concessional assets	Dec. 31, 2021
Contracted concessional assets [Abstract]
Contracted concessional assets	Note 6.- Contracted concessional assets Contracted concessional assets correspond to the assets of the Company recorded as intangible or financial assets in accordance with IFRIC 12, property plant and equipment in accordance with IAS 16 and financial asset in accordance with IFRS 16. For further details on the application of IFRIC 12 to assets of the Company, see Appendix III. a) The following table shows the movements of assets included in the heading “Contracted Concessional assets” for 2021: Cost Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2021 936,837 2,941 9,467,309 66,230 350,720 10,824,037 Additions 922 442 40,383 2,459 14,204 58,410 Subtractions - - (348 ) - (21,282 ) (21,630 ) Business combinations (Note 5) - - - 19,148 522,932 542,080 Currency translation differences (9,519 ) (540 ) (334,497 ) (5,019 ) (20,703 ) (370,278 ) Reclassification and other movements (53,715 ) - 29,692 - 10,539 (13,484 ) Total cost 874,525 2,843 9,202,539 82,818 856,410 11,019,135 Depreciation, amortization and impairment Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2021 (87,689 ) - (2,442,520 ) (10,060 ) (128,350 ) (2,668,619 ) Additions (418 ) - (424,181 ) (4,759 ) (31,003 ) (460,361 ) Reversal of impairment 24,929 - - - - 24,929 Currency translation differences 289 - 97,356 714 8,125 106,484 Total depreciation, amortization and impairment (62,889 ) - (2,769,345 ) (14,105 ) (151,228 ) (2,997,567 ) The increase in the contracted concessional assets cost is primarily due to business combinations for a total amount of $542 million (Note 5), partially offset by the lower value of the Euro denominated assets since the exchange rate of the Euro decreased against the U.S. dollar since December 31, 2020. This increase is mainly offset by the amortization charge for the year and the impairment registered in Solana (see below). The decrease included in “Reclassification and other movement” is mainly due to the reclassification from the long to the short term of the current portion of the contracted concessional financial assets. Solana triggering event of impairment Considering the delays in the improvements and replacements that the Company is carrying out in the storage system in Solana and their impact on production in 2021, as well as an increase in the discount rate, the Company identified an impairment triggering event, in accordance with IAS 36, Impairment of assets. As a result, an impairment test has been performed which resulted in the recording of an impairment loss of $43 million as of December 31, 2021. The impairment has been recorded within the line “Depreciation, amortization and impairment charges” of the consolidated income statement, decreasing the amount of “Contracted concessional assets” pertaining to the Renewable energy sector and the North America geography. The recoverable amount considered is the value in use and amounts to $943 million for Solana, as of December 31, 2021. A specific discount rate has been used in each year considering changes in the debt/equity leverage ratio over the useful life of this project, resulting in the use of a range of discount rates between 4.5% and 5.0%. An adverse change in the key assumptions which are individually used for the valuation could lead to future impairment recognition; specifically, a 5% decrease in generation over the entire remaining useful life (PPA) of the project would generate an additional impairment of approximately $69 million. An increase of 50 basis points in the discount rate would lead to an additional impairment of approximately $41 million. The Company did not identify any other triggering event of impairment of its contracted concessional assets as of December 31, 2021. Expected credit losses The impairment provision based on the expected credit losses on contracted concessional financial assets, calculated in accordance with IFRS 9, Financial instruments, decreased by $25 million in the year ended December 31, 2021, primarily in ACT following an improvement of its client’s credit risk metrics. b) The following table shows the movements of assets included in the heading “Contracted Concessional assets” for 2020: Cost Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2020 872,945 3,459 9,183,011 60,618 264,564 10,384,597 Additions - - 29,213 1,832 4,310 35,355 Subtractions - - (71,706 ) (954 ) (223 ) (72,883 ) Business combinations (Note 5) 102,560 - - 385 63,916 166,861 Currency translation differences (8,166 ) (163 ) 326,791 4,349 18,153 340,964 Reclassification and other movements (30,502 ) (355 ) - - - (30,857 ) Total cost 936,837 2,941 9,467,309 66,230 350,720 10,824,037 Depreciation, amortization and impairment Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2020 (57,258 ) - (2,055,946 ) (6,585 ) (103,679 ) (2,223,468 ) Additions (27,111 ) - (338,393 ) (3,527 ) (15,958 ) (384,989 ) Subtractions - - 17,571 634 49 18,253 Reversal of impairment - - 18,787 - - 18,787 Business combinations (Note 5) (3,797 ) - - - - (3,797 ) Currency translation differences 476 - (84,538 ) (581 ) (8,762 ) (93,405 ) Total depreciation, amortization and impairment (87,689 ) - (2,442,520 ) (10,060 ) (128,350 ) (2,668,619 ) During 2020, the cost of contracted concessional assets increased primarily due to the effect of the appreciation of the Euro against the U.S. dollar for the year ended December 31,2020, compared to the year ended December 31, 2019, and to the acquisition of new concessional assets (Note 5). This increase was mainly offset by the amortization charge for the year and the write-off registered in Solana (see below). The decrease included in “Reclassification and other movements” was mainly due to the reclassification from the long to the short term of the current portion of the contracted concessional financial assets. Solana storage system partial write-off The availability in the storage system of Solana was lower than expected in 2020 due to certain leaks identified in the storage system in the first quarter. The Company identified some elements of the storage system to be replaced, which were written off in these Consolidated Financial Statements through profit and loss in the line “Depreciation, amortization, and impairment charges” for an estimated net book value of approximately $48 million. Solana triggering event of impairment The Company identified in 2020 a triggering event of impairment for Solana as a result of the underperformance of the plant in terms of production. The Company therefore performed an impairment test as of December 31, 2020, which resulted in the recoverable amount (value in use) exceeding the carrying amount of the asset by 10%. To determine the value in use of the asset, a specific discount rate had been used in each year considering changes in the debt/equity leverage ratio over the useful life of this project, resulting in the use of a range of discount rates between 3.8% and 4.3%. An adverse change in the key assumptions which are individually used for the valuation would not have led to future impairment recognition; neither in case of a 5% decrease in generation over the entire remaining useful life (PPA) of the project nor in case of an increase of 50 basis points in the discount rate. Change in the useful life of the solar plants in Spain Further to the recent developments in the Energy and Climate Policy Framework adopted by Spain in 2020, the Company concluded that the expected deep transformation of the electricity sector in Spain would probably significantly reduce the market price at which the electricity is sold in the mid- to long-term. In particular, the Company believed this may impact the price captured by the Company’s solar plants in Spain after the end of the regulation in place (2035 to 2038 onwards). As a result, the price captured by the plants after 2035 to 2038 (the end of the 25 years regulatory period) would likely not be sufficient to cover operating costs. In this case, the plants would stop operating and be dismantled at that point in time. The Company believed that it was possible that long-term price evolution and technology changes could result in scenarios where the plants may continue to operate after the end of the regulatory period. Nevertheless, given the information currently available, the Company decided to reduce the useful life of the CSP plants in Spain from 35 years to 25 years after COD. This change of estimate of the useful life, effective September 1st, 2020, was accounted for as a change in accounting estimate in accordance with IAS 8, Accounting Policies, Changes in Accounting Estimates and Errors. The main impacts recorded prospectively in these Consolidated Financial Statements were: - an increased amortization charge from September 1 st - an increase in the discounted value of the dismantling provision, as the dismantling of the plants would occur earlier. The provision increased by approximately $13 million as of December 31, 2020 (Note 16). In addition, reducing the useful life of the solar plants in Spain was a triggering event of impairment, given that the recoverable amount of the asset is negatively impacted if the plants stop operating in year 25 after COD. The Company therefore performed an impairment test as of December 31, 2020, which resulted in the recoverable amount (value in use) exceeding the carrying amount of the assets by 6%. To determine the value in use of the assets, a specific discount rate had been used in each year considering changes in the debt/equity leverage ratio over the useful life of these projects, resulting in the use of a range of discount rates between 3.3% and 3.8%. An adverse change in the key assumptions which were individually used for the valuation would not have led to future impairment recognition; neither in case of a 5% decrease in generation over the entire remaining useful life of the projects nor in case of an increase of 50 basis points in the discount rate. Palmatir and Cadonal impairment reversals As part of the triggering event analysis performed for Palmatir and Cadonal assets in 2020, the Company identified factors, such as a reduced discount rate according to favorable market conditions, increasing their recoverable amount (value in use). The Company therefore performed an impairment test as of December 31, 2020, which resulted in the reversal of impairments previously recorded, for an amount of $15.6 million and $3.1 million in Cadonal and Palmatir, respectively, recorded within the line “Depreciation, amortization and impairment charges” of the profit and loss statement. No losses from impairment of contracted concessional assets, excluding any change in the provision for expected credit losses under IFRS 9, Financial instruments, were recorded during the year ended December 31, 2020. The impairment provision based on the expected credit losses on contracted concessional financial assets increased by $29 million in the year ended December 31, 2020, primarily in ACT.

Investments carried under the e

Investments carried under the equity method	12 Months Ended
Investments carried under the equity method	Dec. 31, 2021
Investments carried under the equity method [Abstract]
Investments carried under the equity method	Note 7.- Investments carried under the equity method The table below shows the breakdown and the movement of the investments held in associates for 2021 and 2020: Investments in associates 2021 2020 Initial balance 116,614 139,925 Share of profit 12,304 510 Distributions (36,877 ) (23,703 ) Acquisitions 202,345 - Others (incl. currency translation differences) 195 (118 ) Final balance 294,581 116,614 The increase in investments carried under the equity method in 2021, is primarily due to the investment made in Vento II in June 2021, partially offset by the distributions received from this portfolio since then for $14.8 million, from Honaine for $4.4 million ($4.5 million in 2020) and from Amherst for $17.7 million ($16.1 million in 2020). A significant portion of the distributions received from Amherst are distributed by the Company to Algonquin Power Co. (Note 13). The tables below shows a breakdown of stand-alone amounts of assets, revenues and profit and loss as well as other information of interest for the years 2021 and 2020 for the associated companies: Company % Shares Non- current assets Current assets Project Other non- current liabilities Other current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method 2007 Vento II, LLC () 49.00 459,037 13,511 - 62,387 10,259 104,461 34,216 32,806 195,952 Windlectric Inc () 30.00 310,751 11,036 - 207,404 38,126 24,008 10,442 152 41,911 Myah Bahr Honaine, S.P.A.() 25.50 151,830 59,020 51,721 18,142 3,293 53,450 33,935 24,899 38,922 Pemcorp SAPI de CV () 30.00 127,892 117,083 146,931 101,439 2,925 40,166 6,561 (6,522 ) 15,358 Pectonex, R.F. Proprietary Limited 50.00 2,356 - - - 1 - (186 ) (186 ) 1,495 Evacuación Valdecaballeros, S.L. 57.16 17,185 976 - 15,022 156 938 (63 ) (93 ) 923 Evacuación Villanueva del Rey, S.L 40.02 2,637 63 - 1,601 172 - 59 - - ABY Infraestructuras S.L.U. 20.00 238 46 - - 5 - (54 ) (54 ) 21 As of December 31, 2021 294,581 Company % Shares Non- current assets Current assets Project Debt Other non- current liabilities Other current liabilities Revenue Operating profit/loss Net profit/ (loss) Investment under the equity method Windlectric Inc () 30.00 316,251 7,299 - 216,765 31,403 23,663 10,451 (493 ) 59,116 Myah Bahr Honaine, S.P.A.(*) 25.50 165,688 57,808 63,356 17,617 3,636 50,739 30,519 12,402 39,204 Pemcorp SAPI de CV () 30.00 127,429 121,468 154,937 104,893 3,190 28,832 3,068 (6,237 ) 15,514 Pectonex, R.F. Proprietary Limited 50.00 2,743 - - - 1 - (168 ) (168 ) 1,587 Evacuación Valdecaballeros, S.L. 57.16 19,531 1,130 - 16,721 646 853 (167 ) (194 ) 976 Evacuación Villanueva del Rey, S.L 40.02 3,201 134 - 1,861 257 - 52 - - Ca Ku A1, S.A.P.I de CV (PTS) 5.00 468,131 156,528 - 604,986 25,773 80,240 17,415 1,615 30 ABY Infraestructuras S.L.U. 20.00 135 84 - - 63 - (53 ) (53 ) 17 Other renewable energy joint ventures (**) 50.00 323 210 - - 19 (66 ) (66 ) 169 As of December 31, 2020 116,614 The Company has no control over Evacuación Valdecaballeros, S.L. as all relevant decisions of this company require the approval of a minimum of shareholders accounting for more than 75% of the shares. None of the associated companies referred to above is a listed company. () 2007 Vento II, LLC, is the holding company of a 596 MW portfolio of wind assets in the U.S., 0.49% owned by Atlantica since June 16, 2021, and accounted for under the equity method in these Consolidated Financial Statements (Note 1). Share of profit of 2007 Vento II, LLC. included in these Consolidated Financial Statements amounts to $8.4 million in 2021 () Windlectric Inc., the project entity, is 100% owned by Amherst Island Partnership which is accounted for under the equity method in these Consolidated Financial Statements () Myah Bahr Honaine, S.P.A., the project entity, is 51% owned by Geida Tlemcen, S.L. which is accounted for using the equity method in these Consolidated Financial Statements. Geida Tlemcen, S.L. is 50% owned by Atlantica. Share of profit of Myah Bahr Honaine S.P.A. included in these Consolidated Financial Statements amounts to $6.4 million in 2021 and $3.1 million in 2020. (*) Pemcorp SAPI de CV, Monterrey´s project entity, is 100% owned by Arroyo Netherlands II B.V. which is accounted for under the equity method in these Consolidated Financial Statements. Arroyo Netherlands II B.V. is 30% owned by Atlantica. Share of profit of Pemcorp SAPI de CV included in these Consolidated Financial Statements amounts to a loss of $2.0 million in 2021 and a loss of $1.9 million in 2020. (***) Other renewable energy joint ventures in 2020 corresponded to investments made in the following entities: AC Renovables Sol 1 SAS Esp, PA Renovables Sol 1 SAS Esp, SJ Renovables Sun 1 SAS Esp and SJ Renovables Wind 1 SAS Esp. As of December 31, 2021, these entities have been fully consolidated as the Company has gained control over these entities under IFRS 10, Consolidated Financial Statements.

Financial instruments by catego

Financial instruments by category	12 Months Ended
Financial instruments by category	Dec. 31, 2021
Financial instruments by category [Abstract]
Financial instruments by category	Note 8.- Financial instruments by category Financial instruments, in addition to financial assets included within Contracted concessional assets disclosed in Note 6, are primarily deposits, derivatives, trade and other receivables and loans. Financial instruments by category (current and non-current), reconciled with the statement of financial position as of December 31, 2021 and 2020 are as follows: Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2021 Derivative assets 9 - - 12,960 12,960 Investment in Ten West Link - 14,459 - 14,459 Financial assets under IFRIC 12 (short-term portion) 188,912 - - 188,912 Trade and other receivables 11 307,143 - - 307,143 Cash and cash equivalents 12 622,689 - - 622,689 Other financial investments 87,657 - - 87,657 Total financial assets 1,206,401 14,459 12,960 1,233,820 Corporate debt 14 1,023,071 - - 1,023,071 Project debt 15 5,036,193 - - 5,036,193 Trade and other current liabilities 17 113,907 - - 113,907 Derivative liabilities 9 - - 223,453 223,453 Total financial liabilities 6,173,171 - 223,453 6,396,624 Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2020 Derivative assets 9 - - 1,559 1,559 Investment in Ten West Link - 12,896 - 12,896 Investment in Rioglass - - 2,687 2,687 Financial assets under IFRIC 12 (short-term portion) 178,198 - - 178,198 Trade and other receivables 11 331,735 - - 331,735 Cash and cash equivalents 12 868,501 - - 868,501 Other financial investments 94,497 - - 94,497 Total financial assets 1,472,931 12,896 4,246 1,490,073 Corporate debt 14 993,725 - - 993,725 Project debt 15 5,237,614 - - 5,237,614 Related parties – non-current 10 6,810 - - 6,810 Trade and other current liabilities 17 92,557 - - 92,557 Derivative liabilities 9 - - 328,184 328,184 Total financial liabilities 6,330,707 - 328,184 6,658,891 Other financial investments as of December 31, 2021 and as of December 31, 2020 include among others, a loan to Monterrey (Note 7) and restricted cash for repairs or scheduled major maintenance work. Investment in Ten West Link is a 12.5% interest in a 114-mile transmission line in the U.S., currently under development. The investment in Rioglass corresponded to a 15.12% equity interest as of December 31, 2020. The Company gained control over the business in January 2021, which is fully consolidated since then in these Consolidated Financial Statements as of December 31, 2021 (Note 5).

Derivative financial instrument

Derivative financial instruments	12 Months Ended
Derivative financial instruments	Dec. 31, 2021
Derivative financial instruments [Abstract]
Derivative financial instruments	Note 9.- Derivative financial instruments The breakdowns of the fair value amount of the derivative financial instruments as of December 31, 2021 and 2020 are as follows: Balance as of December 31, 2021 Balance as of December 31, 2020 Assets Liabilities Assets Liabilities Interest rate cash flow hedge 9,550 206,763 898 302,302 Foreign exchange derivatives instruments 3,410 - 661 - Notes conversion option (Note 14) - 16,690 - 25,882 Total 12,960 223,453 1,559 328,184 The derivatives are primarily interest rate cash-flow hedges. All are classified as non-current assets or non-current liabilities, as they hedge long-term financing agreements. As stated in Note 3 to these Consolidated Financial Statements, the general policy is to hedge variable interest rates of financing agreements using two types of hedging derivatives: - Interest rate swaps under which the Company receives the floating leg and pays the fixed leg; and - Purchased call options (cap), in exchange of a premium to fix the maximum interest rate cost. The notional amounts hedged, strikes contracted and maturities, depending on the characteristics of the debt on which the interest rate risk is being hedged, can be diverse: - Project debt in Euros: the Company hedges between 75% and 100% of the notional amount, with hedges maturing up to 2038 and average guaranteed interest rate of between 0.00% and 4.87%. - Project debt in U.S. dollars: the Company hedges between 75% and 100% of the notional amount, with hedges maturing up to 2038 and average guaranteed interest rate of between 0.86% and 5.89%. The table below shows a breakdown of the maturities of notional amounts of interest rate cash flow hedge derivatives as of December 31, 2021 and 2020. Notionals Balance as of December 31, 2021 Balance as of December 31, 2020 Assets Liabilities Assets Liabilities Up to 1 year 71,386 106,191 61,364 120,874 Between 1 and 2 years 304,930 240,197 296,828 249,785 Between 2 and 3 years 262,973 271,350 257,548 276,111 Subsequent years 217,989 860,777 292,011 852,696 Total 857,278 1,478,515 907,752 1,499,466 The table below shows a breakdown of the maturity of the fair values of interest rate cash flow hedge derivatives as of December 31, 2021 and 2020: Fair value Balance as of December 31, 2021 Balance as of December 31, 2020 Assets Liabilities Assets Liabilities Up to 1 year 678 (15,039 ) 59 (21,042 ) Between 1 and 2 years 1,810 (33,670 ) 255 (48,276 ) Between 2 and 3 years 2,268 (39,834 ) 305 (55,220 ) Subsequent years 4,794 (118,220 ) 280 (177,764 ) Total 9,550 (206,763 ) 898 (302,302 ) The net amount of the fair value of interest rate derivatives designated as cash flow hedges transferred to the consolidated income statement in 2021 is a loss of $58,292 thousand (loss of $58,381 thousand in 2020 and a loss of $55,765 thousand in 2019). The after-tax result accumulated in equity in connection with derivatives designated as cash flow hedges at the years ended December 31, 2021 and 2020, amount to a $171,272 thousand gain and a $96,641 thousand gain, respectively. Additionally, the Company has currency options with leading international financial institutions, which guarantee minimum Euro-U.S. dollar exchange rates. The strategy of the Company is to hedge the exchange rate for the net distributions from its European assets after deducting euro-denominated interest payments and euro-denominated general and administrative expenses. Through currency options, the strategy of the Company is to hedge 100% of its euro-denominated net exposure for the next 12 months and 75% of its euro denominated net exposure for the following 12 months, on a rolling basis. Change in fair value of these foreign exchange derivatives instruments are directly recorded in the consolidated income statement. Finally, the conversion option of the Green Exchangeable Notes issued in July 2020 (Note 14) is recorded as a derivative with a negative fair value (liability) of $17 million as of December 31, 2021 ($26 million as of December 31, 2020).

Related parties

Related parties	12 Months Ended
Related parties	Dec. 31, 2021
Related parties [Abstract]
Related parties	Note 10.- Related parties The related parties of the Company are primarily Algonquin and its subsidiaries, non-controlling interests (Note 13), entities accounted for under the equity method (Note 7) and Directors and the Senior Management of the Company. Details of balances with related parties as of December 31, 2021 and 2020 are as follows: Balance as of December 31, 2021 2020 Credit receivables (current) 19,387 23,067 Credit receivables (non-current) 15,768 10,082 Total receivables from related parties 35,155 33,149 Credit payables (current) 9,494 18,477 Credit payables (non-current) 5 6,810 Total payables to related parties 9,499 25,287 Current credit receivables as of December 31, 2021 mainly correspond to the short-term portion of the loan to Arroyo Netherland II B.V., the holding company of Pemcorp SAPI de CV., Monterrey´s project company (Note 7) for $10.0 million ($15.5 million as of December 31, 2020) and to a dividend to be collected from Amherst Island Partnership for $6.3 million ($4.3 million as of December 31, 2020). Non-current credit receivables as of December 31, 2021 and December 31, 2020 correspond to the long-term portion of the loan to Arroyo Netherland II B.V. Credit payables relate to debts with non-controlling partners in Kaxu, Solaben 2 & 3 and Solacor 1 & 2 for an amount of $3.4 million as of December 31, 2021 ($21.1 million as of December 31, 2020). The decrease is primarily due to debt repayment at Kaxu. Current credit payables also include the dividend to be paid by AYES Canada to Algonquin for $6.1 million as of December 31, 2021 ($4.2 million as of December 31, 2020). The transactions carried out by entities included in these Consolidated Financial Statements with related parties not included in the consolidation perimeter of Atlantica, for the years ended December 31, 2021, 2020 and 2019 have been as follows: For the year ended December 31, 2021 2020 2019 Financial income 2,069 2,017 978 Financial expense (97 ) (155 ) (195 ) The total amount of the remuneration received by the Board of Directors of the Company, including the CEO, amounts to $4.6 million in 2021 ($3.4 million in 2020), including $1.0 million of annual bonus ($1.0 million in 2020) and $1.9 million of long-term award vested in 2021 ($0.8 million in 2020). The increase of the total remuneration in 2021 is mainly due to the increase of the long-term award, as a result of the vesting in 2021 of one-third of the share options awarded in 2020 and the increase of Atlantica’s share price. None of the directors received any pension remuneration in 2021 nor 2020.

Trade and other receivables

Trade and other receivables	12 Months Ended
Trade and other receivables	Dec. 31, 2021
Trade and other receivables [Abstract]
Trade and other receivables	Note 11.- Trade and other receivables Trade and other receivable as of December 31, 2021 and 2020, consist of the following: Balance as of December 31, 2021 2020 Trade receivables 227,343 258,087 Tax receivables 59,350 50,663 Prepayments 9,342 12,074 Other accounts receivable 11,108 10,911 Total 307,143 331,735 As of December 31, 2021, and 2020, the fair value of trade and other accounts receivable does not differ significantly from its carrying value. Trade receivables in foreign currency as of December 31, 2021 and 2020, are as follows: Balance as of December 31, 2021 2020 Euro 65,854 105,826 South African Rand 24,513 24,121 Other 13,330 6,929 Total 103,697 136,876 The decrease in trade receivables in Euro as of December 31, 2021 is primarily due to the improvement in the collection of receivables from the Spanish state-owned regulator Comision Nacional de los Mercados y de la Competencia or “CNMC” (solar assets in Spain).

Cash and cash equivalents

Cash and cash equivalents	12 Months Ended
Cash and cash equivalents	Dec. 31, 2021
Cash and cash equivalents [Abstract]
Cash and cash equivalents	Note 12.- Cash and cash equivalents The following table shows the detail of Cash and cash equivalents as of December 31, 2021 and 2020: Balance as of December 31, 2021 2020 Cash at bank and on hand - non restricted 368,381 588,690 Cash at bank and on hand - restricted 254,308 279,811 Total 622,689 868,501 Cash includes funds held to satisfy the customary requirements of certain non-recourse debt agreements within the Company´s projects (Note 15) amounting to $254 million as of December 31, 2021 ($280 million as of December 31, 2020). The following breakdown shows the main currencies in which cash and cash equivalent balances are denominated: Balance as of December 31, Currency 2021 2020 U.S. dollar 318,071 575,567 Euro 230,136 196,431 South African Rand 38,268 40,561 Mexican Peso 4,926 23,570 Algerian Dinar 21,156 21,114 Others 10,132 11,258 Total 622,689 868,501

Equity

Equity	12 Months Ended
Equity	Dec. 31, 2021
Equity [Abstract]
Equity	Note 13.- Equity As of December 31, 2021, the share capital of the Company amounts to $11,240,297 ($10,667,087 as of December 31, 2020) represented by 112,402,973 ordinary shares (106,670,866 shares as of December 31, 2020) fully subscribed and disbursed with a nominal value of $0.10 each, all in the same class and series. Each share grants one voting right. Algonquin owns 43.6% of the shares of the Company and is its largest shareholder as of December 31,2021. On December 11, 2020 the Company closed an underwritten public offering of 5,069,200 ordinary shares, including 661,200 ordinary shares sold pursuant to the full exercise of the underwriters’ over-allotment option, at a price of $33 per new share. Gross proceeds were approximately $167 million. Given that the offering was issued through a subsidiary in Jersey, which became wholly owned by the Company at closing, and subsequently liquidated, the premium on issuance was credited to a merger reserve account (Capital reserves), net of issuance costs, for $161 million. Additionally, Algonquin committed to purchase 4,020,860 ordinary shares During the first quarter of 2021, the Company changed the accounting treatment applied to its existing long-term incentive plans granted to employees from cash-settled to equity-settled in accordance with IFRS 2, Share-based Payment, as a result of incentives being settled in shares. The liability recognized for the rights vested by the employees under such plans at the date of this change, was reclassified to equity within the line “Accumulated deficit” for approximately $9 million. The settlement in shares was approved by the Board of Directors on February 26, 2021, and the Company issued 141,482 new shares to its employees up to December 31, 2021, to settle a portion of these plans. On August 3, 2021, the Company established an “at-the-market program” (the “ATM”) and entered into the distribution agreement with J.P. Morgan Securities LLC, as sales agent, (the “Distribution Agreement”) under which the Company may offer and sell from time to time up to $150 million of its ordinary shares. The Company also entered into an agreement with Algonquin pursuant to which the Company has offered Algonquin the right but not the obligation, on a quarterly basis, to purchase a number of ordinary shares to maintain its percentage interest in Atlantica at the average price of the shares sold under the Distribution Agreement in the previous quarter (the “ATM Plan Letter Agreement”). During the year 2021, the Company sold 1,613,079 shares at an average market price of $38.43 pursuant to its Distribution Agreement, representing net proceeds of $61 million. Pursuant to the ATM Plan Letter Agreement, the Company delivers a notice to Algonquin quarterly in order for them to exercise their rights thereunder. Atlantica´s reserves as of December 31, 2021 are made up of share premium account and capital reserves. The share premium account reduction by $200 million during the year 2021, increasing capital reserves by the same amount, was made effective upon the confirmation received from the High Court in the UK, pursuant to the Companies Act 2006. Other reserves primarily include the change in fair value of cash flow hedges and its tax effect. Accumulated currency translation differences primarily include the result of translating the financial statements of subsidiaries prepared in a foreign currency into the presentation currency of the Company, the U.S. dollar. Accumulated deficit primarily includes results attributable to Atlantica. Non-controlling interests fully relate to interests held by JGC in Solacor 1 and Solacor 2, by Idae in Seville PV, by Itochu Corporation in Solaben 2 and Solaben 3, by Algerian Energy Company, SPA and Sacyr Agua S.L. in Skikda , by Algerian Energy Company, SPA in Tenes, by Industrial Development Corporation of South Africa (IDC) and Kaxu Community Trust in Kaxu, by Algonquin Power Co. in AYES Canada, and by partners of the Company in the Chilean renewable energy platform in Chile PV 1 and Chile PV 2. Additional information of subsidiaries including material non-controlling interests as of December 31, 2021 and 2020, is disclosed in Appendix IV. Dividends declared during the year 2021 by the Board of Directors of the Company were: - On February 26, 2021, the Board of Directors declared a dividend of $0.42 per share corresponding to the fourth quarter of 2020. The dividend was paid on March 22, 2021 for a total amount of $46.5 million - On May 4, 2021, the Board of Directors declared a dividend of $0.43 per share corresponding to the first quarter of 2021. The dividend was paid on June 15, 2021 for a total amount of $47.7 million. - On July 30, 2021, the Board of Directors declared a dividend of $0.43 per share corresponding to the second quarter of 2021. The dividend was paid on September 15, 2021 for a total amount of $47.8 million. - On November 9, 2021, the Board of Directors declared a dividend of $0.435 per share corresponding to the third quarter of 2021. The dividend was paid on December 15, 2021 for a total amount of $48.6 million. In addition, the Company declared dividends and distributions to non-controlling interests, primarily to Algonquin (interests in Amherst through AYES Canada, see Note 7) for $17.3 million in 2021 ($14.7 million in 2020), Algerian Energy Company for $6.6 million in 2021 ($3.7 million in 2020) and Itochu for $5.7 million in 2021 ($1.4 million in 2020). As of December 31, 2021, there was no treasury stock and there have been no transactions with treasury stock during the period then ended.

Corporate debt

Corporate debt	12 Months Ended
Corporate debt	Dec. 31, 2021
Corporate debt [Abstract]
Corporate debt	Note 14.- Corporate debt The breakdown of the corporate debt as of December 31, 2021 and 2020 is as follows: Balance as of December 31, 2021 2020 Non-current 995,190 970,077 Current 27,881 23,648 Total Corporate debt 1,023,071 993,725 On July 20, 2017, the Company signed a credit facility (the “2017 Credit Facility”) for up to €10 million, approximately $11.4 million, which is available in euros or U.S. dollars. Amounts drawn down accrue interest at a rate per year equal to EURIBOR plus 2% or LIBOR plus 2%, depending on the currency, with a floor of 0% on the LIBOR and EURIBOR. As of December 31, 2021, $8.2 million were drawn down. As of December 31, 2020, the 2017 Credit Facility was fully available. The credit facility maturity is On May 10, 2018, the Company entered into the Revolving Credit Facility for $215 million with a syndicate of banks. Amounts drawn down accrue interest at a rate per year equal to (A) for Eurodollar rate loans, LIBOR plus a determined by reference to the leverage ratio of the Company, ranging between ½ In the first quarter of the Company increased the amount of the Revolving Credit Facility from to and the maturity was extended to December 31, 2023 On December the Company had issued letters of credit for , therefore, of the Revolving Credit Facility are available ( as of December . On April 30, 2019, the Company entered into the Note Issuance Facility 2019, a senior unsecured note facility with a group of funds managed by Westbourne Capital as purchasers of the notes issued thereunder for a total amount of €268 million, approximately $305 million, with maturity date on April 30, 2025. Interest accrues at a rate per annum equal to the sum of 3-month EURIBOR plus 4.50%. The interest rate on the Note Issuance Facility 2019 is fully hedged by an interest rate swap resulting in the Company paying a net fixed interest rate of 4.24%. The Note Issuance Facility 2019 provided that the Company may capitalize interest on the notes issued thereunder for a period of up to two years from closing at the Company´s discretion, subject to certain conditions, and the Company elected to capitalize such interest until the end of 2020. The Note Issuance Facility has been fully repaid on June and subsequently delisted from the Official List of The International Stock Exchange. On October 8, 2019, the Company filed a euro commercial paper program (the “Commercial Paper”) with the Alternative Fixed Income Market (MARF) in Spain. The program had an original maturity of twelve months and was extended for another twelve-month period on October 8, 2020. The program allowed Atlantica to issue short term notes over the next twelve months for up to €50 million, (approximately $57 million), with such notes having a tenor of up to two years. As of December 31, 2021, the Company had €21.5 million (approximately $24.4 million ) issued and outstanding under the program at an average cost of 0.36% (€17.4 million , approximately , as of December ). On April 1, 2020, the Company closed the secured 2020 Green Private Placement for €290 million (approximately $330 million). The private placement accrues interest at an annual 1.96% interest rate, payable quarterly and has a June 2026 maturity. On July 8, 2020, the Company entered into the Note Issuance Facility 2020, a senior unsecured financing with a group of funds managed by Westbourne Capital as purchasers of the notes issued thereunder for a total amount of approximately $159 million which is denominated in euros (€140 million). The Note Issuance Facility 2020 was issued on August 12, 2020, accrues annual interest of 5.25%, payable quarterly and has a maturity of seven years from the closing date. On July 17, 2020, the Company issued the Green Exchangeable Notes for $100 million in aggregate principal amount of 4.00% convertible bonds due in 2025. On July 29, 2020, the Company closed an additional $15 million aggregate principal amount of the Green Exchangeable Notes. The notes mature on July 15, 2025 and bear interest at a rate of 4.00% per annum. The initial exchange rate of the notes is 29.1070 ordinary shares per $1,000 principal amount of notes, which is equivalent to an initial exchange price of $34.36 per ordinary share. Noteholders may exchange their notes at their option at any time prior to the close of business on the scheduled trading day immediately preceding April 15, 2025, only during certain periods and upon satisfaction of certain conditions. On or after April 15, 2025, noteholders may exchange their notes at any time. Upon exchange, the notes may be settled, at the election of the Company, into Atlantica ordinary shares, cash or a combination thereof. The exchange rate is subject to adjustment upon the occurrence of certain events. As per IAS 32, “Financial Instruments: Presentation”, the conversion option of the Green Exchangeable Notes is an embedded derivative classified within the line “Derivative liabilities” of these Consolidated Financial Statements (Note 9). It was initially valued at the transaction date for $10 million, and prospective changes to its fair value are accounted for directly through the profit and loss statement. The principal element of the Green Exchangeable Notes, classified within the line “Corporate debt” of these Consolidated Financial Statements, is initially valued as the difference between the consideration received from the holders of the instrument and the value of the embedded derivative, and thereafter, at amortized cost using the effective interest method as per IFRS 9, “Financial Instruments”. On December 4, 2020, the Company entered into a loan with a bank for €5 million, approximately $5.7 million. This loan accrues interest at a rate per year equal to 2.50%. The maturity date is December 4, 2025. On May 18, the Company issued the Green Senior Notes due in in an aggregate principal amount of . The notes mature on May 15, 2028 and bear interest at a rate of per annum payable on June and December of each year, commencing December The repayment schedule for the corporate debt as of December 31, 2021 is as follows: 2022 2023 2024 2025 2026 Subsequent years Total 2017 Credit Facility 5 8,199 - - - - 8,204 Commercial Paper 24,422 - - - - - 24,422 2020 Green Private Placement 359 - - - 327,081 - 327,440 Note Issuance Facility 2020 - - - - - 155,814 155,814 Green Exchangeable Notes 2,121 - - 104,289 - - 106,410 Bank Loan 11 1,895 1,895 1,862 - - 5,663 Green Senior Note 963 - - - - 394,155 395,118 Total 27,881 10,094 1,895 106,151 327,081 549,969 1,023,071 The repayment schedule for the corporate debt as of December 31, 2020 is as follows: 2021 2022 2023 2024 2025 Subsequent years Total 2017 Credit Facility 41 - - - - - 41 Notes Issuance Facility 2019 - - - - 343,999 - 343,999 Commercial Paper 21,224 - - - - - 21,224 2020 Green Private Placement 289 - - - - 351,026 351,315 Note Issuance Facility 2020 - - - - - 166,846 166,846 Green Exchangeable Notes 2,083 - - - 102,144 - 104,227 Bank Loan 11 - 2,036 2,036 1,990 - 6,073 Total 23,648 - 2,036 2,036 448,133 517,872 993,725 The following table details the movement in corporate debt for the years 2021 and 2020, split between cash and non-cash items: Corporate Debt 2021 2020 Initial balance 993,725 723,791 Cash changes 14,754 171,182 Non-cash changes 14,592 98,752 Final balance 1,023,071 993,725 The non-cash changes primarily relate to interests accrued and to currency translation differences.

Project debt

Project debt	12 Months Ended
Project debt	Dec. 31, 2021
Project debt [Abstract]
Project debt	Note 15.- Project debt This note shows the project debt linked to the contracted concessional assets included in Note 6 of these Consolidated Financial Statements. Project debt is generally used to finance contracted assets, exclusively using as a guarantee the assets and cash flows of the company or group of companies carrying out the activities financed. In most of the cases, the assets and/or contracts are set up as a guarantee to ensure the repayment of the related financing. In addition, the cash of the Company´s projects includes funds held to satisfy the customary requirements of certain non-recourse debt agreements and other restricted cash for an amount of $254 million as of December 31, 2021 ($280 million as of December 31, 2020). The variations in 2021 of project debt has been the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2020 4,925,268 312,346 5,237,614 Increases 54,908 256,581 311,489 Decreases (85,259 ) (564,603 ) (649,862 ) Business combinations (Note 5) 288,352 38,781 327,133 Currency translation differences (140,502 ) (49,679 ) (190,181 ) Reclassifications (655,093 ) 655,093 - Balance as of December 31, 2021 4,387,674 648,519 5,036,193 The decrease in total project debt as of December 31, 2021 is primarily due to: - the repayment of project debt for the period in accordance with the financing arrangements; and - the lower value of debt denominated in Euros given the depreciation of the Euro against the U.S. dollar since December 31, 2020. The decrease of project debt during the year 2021 has been partially offset by the business combinations, being the acquisitions of Rioglass, Coso, Chile PV 2, Italy PV 1 and Italy PV 3 for a total amount of $327 million (Note 5). Interest accrued are offset by a similar amount of interest paid during the year. The Kaxu project financing arrangement contains cross-default provisions related to Abengoa such that debt defaults by Abengoa, subject to certain threshold amounts and/or a restructuring process, could trigger a default under the Kaxu project financing arrangement. The insolvency filing by the individual company Abengoa S.A. in February 2021 represents a theoretical event of default under the Kaxu project finance agreement. In September 2021, the Company obtained a waiver for such theoretical event of default which was conditional upon the replacement of the operation and maintenance supplier of the plant. On February 1, 2022, the Company transferred the employees performing the operation and maintenance services to an Atlantica subsidiary. The waiver has been extended until April 30, 2022 and is subject to the lenders receiving certain documentation from the Company, including formal evidence of the approval by the client and the department of energy of South Africa of the operation and maintenance internalization and the Company is currently working on obtaining such documentation. Although the Company does not expect the acceleration of debt to be declared by the credit entities, as of December 31, 2021 Kaxu did not have what International Accounting Standards define as an unconditional right to defer the settlement of the debt for at least twelve months, as the cross-default provisions make that right conditional. Therefore, Kaxu total debt, previously presented as non-current as of December 31, 2020, has been presented as current in the Consolidated Financial Statements of the Company as of December 31, 2021 for an amount of $315 million (Note 1). The variations in 2020 of project debt were the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2019 4,069,909 782,439 4,852,348 Increases 613,604 268,339 881,943 Decreases (272,548 ) (552,770 ) (825,318 ) Business combinations (Note 5) 149,585 8,680 158,265 Currency translation differences 150,506 19,869 170,375 Reclassifications 214,211 (214,211 ) - Balance as of December 31, 2020 4,925,268 312,346 5,237,614 The increase in total project debt as of December 31, 2020 was primarily due to: - business combinations, being the acquisition of Chile PV 1 and Tenes for a total amount of $158 million (Note 5). - a green project financing agreement entered into by Logrosán Solar Inversiones, S.A.U., the holding company of assets Solaben 1, 2, 3 and 6 in Spain, closed on April 8, 2020 for a €140 million nominal amount, (approximately $159 million). - a non-recourse project debt refinancing of Helioenergy assets by adding a new long dated tranche of debt from an institutional investor closed on July 10, 2020, providing with a net refinancing proceeds (net “recap”) of approximately $43 million. - a non-recourse, project debt financing closed on July 14, 2020 for approximately €326 million (approximately $371 million) in relation to Helios, with institutional investors, which refinanced the previous bank project debt with approximately €250 million outstanding and canceled legacy interest rate swaps. After transaction costs and cancelation of legacy swaps, net refinancing proceeds (net “recap”) were approximately $30 million. The accumulated impact of the change in fair value of the interest rate swaps recorded in Other reserves and any difference between the nominal amount of the debt repaid and the amortized cost of the debt were transferred to the profit and loss in line “Other financial income/(expense), net” on transaction date for a total amount of $73 million (Note 21). - the higher value of debt denominated in Euro given the increase in the exchange rate of the Euro against the U.S. dollar since December 31, 2019. The increase of project debt during the year 2020 was partially offset by the contractual payments of debt for the year. Interest accrued were offset by a similar amount of interest paid during the year. Additionally, on June 12, 2020 the Company refinanced the debt of Cadonal (Uruguay). The terms of the new debts were not substantially different from the original debts refinanced and therefore the exchange of debts instruments did not qualify for an extinguishment of the original debts under IFRS 9, ´Financial instruments´. When there is a refinancing with a non-substantial modification of the original debt, there is a gain or loss recorded in the income statement. This gain or loss is equal to the difference between the present value of the cash flows under the original terms of the former financing and the present value of the cash flows under the new financing, discounted both at the original effective interest rate. In this respect, the Company recorded a $3.8 million financial income in the profit and loss statement of the Consolidated Financial Statements (Note 21). Due to the PG&E Corporation and its regulated utility subsidiary, Pacific Gas and Electric Company (“PG&E”), Chapter 11 filings in January 2019, a default of the PPA agreement with PG&E occurred. On July 1, 2020, PG&E emerged from Chapter 11 and the technical event of default was cured. As a result, as of December 31, 2020 the debt previously presented as current (during the year 2019) was reclassified as non-current in accordance with the financing agreements in these Consolidated Financial Statements. The repayment schedule for project debt in accordance with the financing arrangements and assuming there will be no acceleration at the Kaxu debt as of December 31, 2021, is as follows and is consistent with the projected cash flows of the related projects: 2022 2023 2024 2025 2026 Subsequent years Total Interest payment Nominal repayment 18,017 317,388 355,956 369,528 498,712 411,514 3,065,078 5,036,193 The repayment schedule for project debt in accordance with the financing arrangements as of December 31, 2020, is as follows and is consistent with the projected cash flows of the related projects: 2021 2022 2023 2024 2025 Subsequent years Total Interest payment Nominal repayment 19,287 293,059 328,364 355,806 371,548 508,843 3,360,707 5,237,614 The following table details the movement in project debt for the years 2021 and 2020, split between cash and non-cash items: Project Debt 2021 2020 Initial balance 5,237,614 4,852,348 Cash changes (636,831 ) (254,495 ) Non-cash changes 435,410 639,761 Final balance 5,036,193 5,237,614 The non-cash changes primarily relate to interest accrued, currency translation differences and the business combinations for the year. The equivalent in U.S. dollars of the foreign currency-denominated debts held by the Company is as follows: Balance as of December 31, Currency 2021 2020 Euro 1,942,903 2,240,811 South African Rand 314,471 355,414 Algerian Dinar 97,877 115,606 Total 2,355,251 2,711,830 All of the Company’s financing agreements have a carrying amount close to its fair value.

Grants and other liabilities

Grants and other liabilities	12 Months Ended
Grants and other liabilities	Dec. 31, 2021
Grants and other liabilities [Abstract]
Grants and other liabilities	Note 16.- Grants and other liabilities Grants and other liabilities as of December 31, 2021 and December 31, 2020 are as follows: Balance as of December 31, 2021 2020 Grants 970,557 1,028,765 Other liabilities 293,187 201,002 Grant and other non-current liabilities 1,263,744 1,229,767 As of December 31, 2021, the amount recorded in Grants corresponds primarily to the ITC Grant awarded by the U.S. Department of the Treasury to Solana and Mojave for a total amount of $642 million ($674 million as of December 31, 2020), which was primarily used to fully repay the Solana and Mojave short-term tranche of the loan with the Federal Financing Bank. The amount recorded in Grants as a liability is progressively recorded as other income over the useful life of the asset. The remaining balance of the “Grants” account corresponds to loans with interest rates below market rates for Solana and Mojave for a total amount of $326 million ($352 million as of December 31, 2020). Loans with the Federal Financing Bank guaranteed by the Department of Energy for these projects bear interest at a rate below market rates for these types of projects and terms. The difference between proceeds received from these loans and its fair value, is initially recorded as “Grants” in the consolidated statement of financial position, and subsequently recorded in “Other operating income” starting at the entry into operation of the plants. Total amount of income for these two types of grants for Solana and Mojave is $58.7 million and $58.9 million for the years ended December 31, 2021 and 2020, respectively (Note 20). Other liabilities mainly include: - $59 million of lease liabilities ($52 million as of December 31, 2020); - $125 million of dismantling provision as of December 31, 2021 ($88 million as of December 31, 2020); and - $75 million of provision related to the current high market prices in Spain at which the solar assets in Spain invoiced electricity up to December 31, 2021 ($0.6 million as of December 31, 2020), as a result of a negative adjustment to the regulated revenues expected to be recorded progressively over the remaining regulatory life of the solar assets of the Company, as a compensation.

Trade payables and other curren

Trade payables and other current liabilities	12 Months Ended
Trade payables and other current liabilities	Dec. 31, 2021
Trade payables and other current liabilities [Abstract]
Trade payables and other current liabilities	Note 17.- Trade payables and other current liabilities Trade payables and other current liabilities as of December 31, 2021 and 2020 are as follows: Balance as of December 31, Item 2021 2020 Trade accounts payables 79,052 51,421 Down payments from clients 542 416 Other accounts payables 34,313 40,720 Total 113,907 92,557 Trade accounts payables mainly relate to the operation and maintenance of the plants. Nominal values of trade payables and other current liabilities are considered to approximately equal to fair values and the effect of discounting them is not significant.

Income Tax

Income Tax	12 Months Ended
Income Tax	Dec. 31, 2021
Income Tax [Abstract]
Income Tax	Note 18.- Income Tax All the companies of Atlantica file income taxes according to the tax regulations in force in each country on an individual basis or under consolidation tax regulations. The consolidated income tax has been calculated as an aggregation of income tax expenses/income of each individual company. In order to calculate the taxable income of the consolidated entities individually, the accounting result is adjusted for temporary and permanent differences, recording the corresponding deferred tax assets and liabilities. At each consolidated income statement date, a current tax asset or liability is recorded, representing income taxes currently refundable or payable. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial statement and income tax purposes, as determined under enacted tax laws and rates. Income tax payable is the result of applying the applicable tax rate in force to each tax-paying entity, in accordance with the tax laws in force in the country in which the entity is registered. Additionally, tax deductions and credits are available to certain entities, primarily relating to inter-company trades and tax treaties between various countries to prevent double taxation. The Company offsets deferred tax assets and deferred tax liabilities in each entity where the latter has a legally enforceable right to set off current tax assets against current tax liabilities, and the deferred tax assets and liabilities relate to income taxes levied by the same taxation authority. As of December 31, 2021, and 2020, the analysis of deferred tax assets and deferred tax liabilities is as follows: Deferred tax assets Balance as of December 31, from 2021 2020 Net operating loss carryforwards (“NOL´s”) 323,115 497,184 Temporary tax non-deductible expenses 128,186 115,063 Derivatives financial instruments 55,217 83,847 Other 4,225 3,021 Total deferred tax assets 510,743 699,115 Deferred tax liabilities Balance as of December 31, from 2021 2020 Accelerated tax amortization 465,219 652,600 Other difference between tax and book value of assets 180,218 154,969 Other 1,897 179 Total deferred tax liabilities 647,334 807,748 After offsetting deferred tax assets and deferred tax liabilities, where applicable Consolidated balance sheets classifications Balance as of December 31, 2021 2020 Deferred tax assets 172,268 152,290 Deferred tax liabilities 308,859 260,923 Net deferred tax liabilities 136,591 108,633 Most of the NOL´s recognized as deferred tax assets corresponds to the entities in the U.S., South Africa, Peru, Chile and Spain as of December 31, 2021 and 2020. As of December 31, 2021, deferred tax assets for non-deductible expenses are primarily due to the temporary limitation of financial expenses deductibles for tax purposes in the solar plants in Spain for $97 million ($110 million as of December 31, 2020). Deferred tax assets for derivatives financial instruments as of December 31, 2021 mainly relate to ACT for $14 million and to solar plants in Spain for $33 million ($22 million and $51 million as of December 31, 2020, respectively). As of December 31, 2021, deferred tax liabilities for accelerated tax amortization are primarily in the solar plants in Spain for $186 million, Solana and Mojave for $184 million and Kaxu for $76 million ($202 million, $361 million and $90 million as of December 31, 2020, respectively). Deferred tax liabilities for other temporary differences between the tax and book value of contracted concessional assets relate primarily to ACT for $72 million, the Peruvian entities for $34 million, U.S. entities for $28 million, and the Chilean entities for $27 million as of December 31, 2021 ($75 million, $32 million, $2 million and $29 million as of December 31, 2020, respectively). In relation to tax losses carryforwards and deductions pending to be used recorded as deferred tax assets, the entities evaluate their recoverability projecting forecasted taxable result for the upcoming years and taking into account their tax planning strategy. Deferred tax liabilities reversals are also considered in these projections, as well as any limitation established by tax regulations in force in each tax jurisdiction. In addition, the Company has $259 million unrecognized net operating loss carryforwards as of December 31, 2021 ($290 million as of December 31, 2020), as it considers it is not probable that future taxable profits will be available against which these unused tax losses can be utilized. The movements in deferred tax assets and liabilities during the years ended December 31, 2021 and 2020 were as follows: Deferred tax assets Amount As of December 31, 2019 147,966 Increase/(decrease) through the consolidated income statement 6,003 Increase/(decrease) through other consolidated comprehensive income (equity) (8,698) Currency translation differences and other 7,019 As of December 31, 2020 152,290 Increase/(decrease) through the consolidated income statement 46,855 Increase/(decrease) through other consolidated comprehensive income (equity) (23,712 ) Business combinations (Note 5) 4,410 Currency translation differences and other (7,575) As of December 31, 2021 172,268 Deferred tax liabilities Amount As of December 31, 2019 248,996 Increase/(decrease) through the consolidated income statement 9,675 Currency translation differences and other 2,252 As of December 31, 2020 260,923 Increase/(decrease) through the consolidated income statement 32,059 Business combinations (Note 5) 4,910 Currency translation differences and other 10,967 As of December 31, 2021 308,859 Details of income tax for the years ended December 31, 2021, 2020 and 2019 are as follows: For the year ended December 31, 2021 2020 2019 Current tax (51,016 ) (21,205 ) (5,081 ) Deferred tax 14,796 (3,672 ) (25,869 ) - relating to the origination and reversal of temporary differences 14,796 (3,672 ) (25,869 ) Total income tax expense (36,220 ) (24,877 ) (30,950 ) The reconciliation between the theoretical income tax resulting from applying an average statutory tax rate to profit before income tax and the actual income tax expense recognized in the consolidated income statements for the years ended December 31, 2021, 2020, and 2019, is as follows: For the year ended December 31, 2021 2020 2019 Consolidated income before taxes 25,302 41,751 105,558 Average statutory tax rate 25 % 25 % 25 % Corporate income tax at average statutory tax rate (6,326 ) (10,438 ) (26,390 ) Income tax of associates, net 3,076 128 1,808 Differences in statutory tax rates (3,359 ) (94 ) (7,076 ) Unrecognized NOLs and deferred tax assets (11,232 ) (37,183 ) (14,161 ) Purchase of Liberty Interactive’s equity interest in Solana - 36,352 - Other permanent differences (4,052 ) (8,895 ) 11,220 Other non-taxable income/(expense) (14,327 ) (4,747 ) 3,649 Corporate income tax (36,220 ) (24,877 ) (30,950 ) For the year ended December 31, 2021, the overall effective tax rate was different than the average statutory rate of 25% primarily due to unrecognized tax losses carryforwards, mainly in the UK entities and to provisions recorded for potential tax contingencies in some jurisdictions. For the year ended December 31, 2020, the overall effective tax rate was different than the average statutory rate of 25% primarily due to unrecognized tax losses carryforwards, mainly in the UK entities, partially offset by the non-taxable gain recorded in the Consolidated Financial Statements on the purchase of Liberty Interactive’s equity interest in Solana (Note 21). For the year ended December 31, 2019, the overall effective tax rate was different than the average statutory rate of 25%, primarily due to unrecognized tax losses carryforwards, mainly in the UK and US entities. Any uncertain tax positions identified by the Company as of December 31, 2021, 2020 and 2019 has been provided for in these Consolidated Financial Statements in accordance with IFRIC 23, uncertainty over income tax treatments.

Commitments, third-party guaran

Commitments, third-party guarantees, contingent assets and liabilities	12 Months Ended
	Dec. 31, 2021
Commitments, third-party guarantees, contingent assets and liabilities [Abstract]
Commitments, third-party guarantees, contingent assets and liabilities	Note 19.- Commitments, third-party guarantees, contingent assets and liabilities Contractual obligations The following tables show the breakdown of the third-party commitments and contractual obligations as of December 31, 2021 and 2020: 2021 Total 2022 2023 and 2024 2025 and 2026 Subsequent Corporate debt (Note 14) 1,023,071 27,881 11,989 433,232 549,969 Loans with credit institutions (project debt) (Note 15) 4,010,825 289,755 624,633 801,713 2,294,724 Notes and bonds (project debt) (Note 15) 1,025,368 45,650 100,850 108,512 770,355 Purchase commitments* 1,570,831 79,261 191,171 159,297 1,141,102 Accrued interest estimate during the useful life of loans 2,029,376 267,645 497,587 427,159 836,985 2020 Total 2021 2022 and 2023 2024 and 2025 Subsequent Corporate debt (Note 14) 993,725 23,648 2,036 450,169 517,872 Loans with credit institutions (project debt) (Note 15) 4,123,856 261,800 583,259 770,507 2,508,290 Notes and bonds (project debt) (Note 15) 1,113,758 50,558 100,911 109,884 852,405 Purchase commitments* 1,709,660 93,791 160,211 172,776 1,282,881 Accrued interest estimate during the useful life of loans 2,309,597 286,724 541,652 468,060 1,013,161 * Purchase commitments include lease commitments for lease arrangements accounted for under IFRS 16 for Third-party guarantees As of December 31, 2021, the sum of bank guarantees and surety bonds deposited by the subsidiaries of the Company as a guarantee to third parties (clients, financial entities and other third parties) amounted to $92.7 million ($36.2 million as of December 31, 2020). The increase primarily relates to Coso and Rioglass, which are businesses acquired by the Company in 2021 (Note 5). Corporate debt guarantees The payment obligations under the Green Senior Notes, the Revolving Credit Facility, the Note Issuance Facility 2020 and the 2020 Green Private Placement are guaranteed on a senior unsecured basis by following subsidiaries of the Company: Atlantica Infraestructura Sostenible, S.L.U., Atlantica Peru, S.A., ACT Holding, S.A. de C.V., Atlantica Investments Limited, Atlantica Newco Limited and Atlantica North America LLC. The Revolving Credit Facility and the 2020 Green Private Placement are also secured with a pledge over the shares of the subsidiary guarantors. Legal Proceedings In 2018, an insurance company covering certain Abengoa obligations in Mexico claimed certain amounts related to a potential loss. Atlantica reached an agreement under which Atlantica´s maximum theoretical exposure would in any case be limited to approximately $35 million, including $2.5 million to be held in an escrow account. In January 2019, the insurance company called on this $2.5 million from the escrow account and Abengoa reimbursed this amount. The insurance company could claim additional amounts if they faced new losses after following a process agreed between the parties and, in any case, Atlantica would only make payments if and when the actual loss has been confirmed and after arbitration if the Company initiates it. The Company used to have indemnities from Abengoa for certain potential losses, but such indemnities are no longer valid following the insolvency filing by Abengoa S.A. in February 2021. In addition, during 2021, several lawsuits were filed related to the February 2021 winter storm Uri in Texas against among others Electric Reliability Council of Texas (ERCOT), two utilities in Texas and more than 230 individual power generators, including Post Oak Wind, LLC, the project company owner of Lone Star I, one of the wind assets in Vento II where the Company currently has a 49% equity interest. The basis for the lawsuit is that the defendants failed to properly prepare for cold weather, including failure to implement measures and equipment to protect against cold weather, and failed to properly conduct their operations before and during the storm. Atlantica is not a party to any other significant legal proceedings other than legal proceedings arising in the ordinary course of its business. Atlantica is party to various administrative and regulatory proceedings that have arisen in the ordinary course of business. While Atlantica does not expect these proceedings, either individually or in combination, to have a material adverse effect on its financial position or results of operations, because of the nature of these proceedings Atlantica is not able to predict their ultimate outcomes, some of which may be unfavorable to Atlantica.

Employee benefit expenses and o

Employee benefit expenses and other operating income and expenses	12 Months Ended
	Dec. 31, 2021
Employee benefit expenses and other operating income and expenses [Abstract]
Employee benefit expenses and other operating income and expenses	Note 20.- Employee benefit expenses and other operating income and expenses Employee benefit expenses The table below shows employee benefit expenses and number of employees for the years ended December 31, 2021, 2020 and 2019: For the year ended December 31, 2021 2020 2019 Employee benefit expenses 78,758 54,464 32,246 Average monthly number of employees 655 441 306 The increase in employee benefit expenses in 2021 compared to 2020 is primarily due to the acquisition of Rioglass and Coso made effective in January 2021 and April 2021, respectively. The increase in 2020 compared to 2019 was primarily due to the internalization of operation and maintenance services in the U.S. solar assets of the Company, following the acquisition of ASI Operations in July 2019. Other operating income and expenses The table below shows the detail of Other operating income and expenses for the years ended December 31, 2021, 2020 and 2019: For the year ended December 31, Other operating income 2021 2020 2019 Grants 60,746 59,010 59,142 Insurance proceeds and other 13,925 40,515 34,632 Total 74,670 99,525 93,774 For the year ended December 31, Other operating expenses 2021 2020 2019 Raw materials and consumables used (70,690 ) (7,792 ) (9,719 ) Leases and fees (9,332 ) (2,531 ) (1,850 ) Operation and maintenance (154,007 ) (110,873 ) (116,018 ) Independent professional services (39,177 ) (40,193 ) (41,579 ) Supplies (40,790 ) (27,926 ) (25,823 ) Insurance (45,429 ) (37,638 ) (23,971 ) Levies and duties (29,949 ) (39,820 ) (34,844 ) Other expenses (24,957 ) (9,891 ) (7,971 ) Total (414,330 ) (276,666 ) (261,776 ) Grants income mainly relate to ITC cash grants and implicit grants recorded for accounting purposes in relation to the FFB loans with interest rates below market rates in Solana and Mojave projects (Note 16). The increase in other operating expenses in 2021 is primarily due to the business combinations made effective in 2021 (Note 5).

Financial expense, net

Financial expense, net	12 Months Ended
Financial expense, net	Dec. 31, 2021
Financial expense, net [Abstract]
Financial expense, net	Note 21.- Financial expense, net The following table sets forth financial income and expenses for the years ended December 31, 2021, 2020 and 2019: For the year ended December 31, Financial income 2021 2020 2019 Interest income from loans and credits 2,066 6,651 3,665 Interest rates benefits derivatives: cash flow hedges 689 401 456 Total 2,755 7,052 4,121 For the year ended December 31, Financial expenses 2021 2020 2019 Interest on loans and notes (302,558 ) (316,237 ) (348,672 ) Interest rates losses derivatives: cash flow hedges (58,712 ) (62,149 ) (59,318 ) Total (361,270 ) (378,386 ) (407,990 ) Financial interest income from loans and credits included in 2020 a non-monetary financial income of $3.8 million resulting from the refinancing of the debt of Cadonal in the second quarter of 2020 (Note 15). Interest on loans and notes primarily include interest on corporate and project debt. The decrease in 2020 compared to 2019 is primarily due to the acquisition of Liberty Interactive’s equity interest in Solana in August 2020, which was accounted for as a liability in these Consolidated Financial Statements, in accordance with IAS 32. Losses from interest rate derivatives designated as cash flow hedges primarily correspond to transfers from equity to financial expense when the hedged item impacts the consolidated income statement. Net exchange differences Net exchange differences primarily correspond to realized and unrealized exchange gains and losses on transactions in foreign currencies as part of the normal course of the business of the Company. Other financial income/(expense), net The following table sets out Other financial income/(expense), net for the years 2021, 2020 and 2019: For the year ended December 31, Other financial income/(expense), net 2021 2020 2019 Other financial income 32,321 162,290 14,152 Other financial losses (16,571 ) (121,415 ) (15,305 ) Total 15,750 40,875 (1,153 ) Other financial income in 2021 include $7.6 million of income for non-monetary change to the fair value of derivatives of Kaxu for which hedge accounting is not applied, and $9.2 million income further to the change in the fair value of the conversion option of the Green Exchangeable Notes since December 2020 (Note 14). Residual items primarily relate to interest on deposits and loans, including non-monetary changes to the amortized cost of such loans. The decrease of other financial income compared to the year 2020 is primarily due to the gain of $145 million further to the purchase of Liberty Interactive´s equity interest in Solana accounted for in the third quarter of 2020. Other financial losses include guarantees and letters of credit, other bank fees, non-monetary changes to the fair value of derivatives which hedge accounting is not applied and of financial instruments recorded at fair value through profit and loss, and other minor financial expenses. The decrease compared to the year 2020 is primarily due to $73 million of financial expenses further to the refinancing of the Helios 1&2 debts accounted for in the third quarter of 2020 (Note 15) and a $16 million expense further to the change in the fair value of the conversion option of the Green Exchangeable Notes in 2020 (Note 14).

Earnings per share

Earnings per share	12 Months Ended
Earnings per share	Dec. 31, 2021
Earnings per share [Abstract]
Earnings per share	Note 22.- Earnings per share Basic earnings per share have been calculated by dividing the profit/(loss) attributable to equity holders of the Company by the average number of outstanding shares. Diluted earnings per share for the year 2021 have been calculated considering the potential issuance of 3,347,305 shares on the settlement of the Green Exchangeable Notes (Note 14) and the potential issuance of 725,041 shares to Algonquin under the agreement signed on August 3, 2021, according to which Algonquin has the option, on a quarterly basis, to subscribe such number of shares to maintain its percentage in Atlantica in relation to the use of the ATM program (Note 13). Diluted earnings per share for the year 2020 was calculated considering the potential issuance of 3,347,305 shares on settlement of the Green Exchangeable Notes. Diluted earnings per share equal basic earnings per share for the year 2019. For the year ended December 31, Item 2021 2020 2019 Profit/(loss) from continuing operations attributable to Atlantica (30,080 ) 11,968 62,135 Average number of ordinary shares outstanding (thousands) - basic 111,008 101,879 101,063 Average number of ordinary shares outstanding (thousands) - diluted 114,523 103,392 101,063 Earnings per share for the year (US dollar per share) - basic (0.27 ) 0.12 0.61 Earnings per share for the year (US dollar per share) - diluted (0.26 ) 0.12 0.61

Other information

Other information	12 Months Ended
Other information	Dec. 31, 2021
Other information [Abstract]
Other information	Note 23.- Other information 23.1 Restricted Net assets Certain of the consolidated entities are restricted from remitting certain funds to Atlantica Sustainable Infrastructure plc. as a result of a number of regulatory, contractual or statutory requirements. These restrictions are mainly related to standard requirements to maintain debt service coverage ratios and other requirements from the financing arrangements. At December 31, 2021, the accumulated amount of the temporary restrictions for the entire restricted term of these affiliates was $326 million. The Company performed a test on the restricted net assets of consolidated subsidiaries in accordance with Securities and Exchange Commission Regulation S-X Rule 12-04 and concluded the restricted net assets did not exceed 25% of the consolidated net assets of the Company as of December 31, 2021. Therefore, separate financial statements of Atlantica Sustainable Infrastructure, plc. do not have to be presented. 23.2 Subsequent events On January 17, 2022, the Company closed the acquisition of Chile TL4, a 63-mile transmission line and 2 substations in Chile for a total equity investment of $39 million. The Company expects to make an expansion of the line in 2022, which would represent an additional investment of approximately $8 million. The asset has fully contracted revenues in US dollars, with inflation escalation and 50-year contract life. The off-takers are several mini-hydro plants that receive contracted or regulated payments. On February 25, 2022, the Board of Directors of the Company approved a dividend of $0.44 per share, which is expected to be paid on March 25, 2022.

Significant accounting polici_2

Significant accounting policies (Policies)	12 Months Ended
Significant accounting policies (Policies)	Dec. 31, 2021
Significant accounting policies [Abstract]
Basis of preparation	2.1 Basis of preparation These Consolidated Financial Statements are presented in accordance with the International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). The Consolidated Financial Statements are presented in U.S. dollars, which is the Company’s functional and presentation currency. Amounts included in these Consolidated Financial Statements are all expressed in thousands of U.S. dollars, unless otherwise indicated. The Company presents assets and liabilities in the statement of financial position based on current/non-current classification. An asset or liability is current when it is expected or due to be realized within twelve months after the reporting period. Application of new accounting standards a) Standards, interpretations and amendments effective from January 1, 2021 under IFRS-IASB, applied by the Company in the preparation of these Consolidated Financial Statements: The applications of these amendments have not had any impact on these financial statements. Interest Rate Benchmark Reform – Phase 2: Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16. These amendments are mandatory for annual periods beginning on or after January 1, 2021 under IFRS-IASB. The amendments provide temporary reliefs which address the financial reporting effects when an interbank offered rate (“IBOR”) is replaced with an alternative risk-free interest rate (“RFR”). The amendments include the following practical expedients: - A practical expedient to require contractual changes, or changes to cash flows that are directly required by the reform, to be treated as changes to a floating interest rate, equivalent to a movement in a market rate of interest. - Permit changes required by IBOR reform to be made to hedge designations and hedge documentation without the hedging relationship being discontinued. The Company intends to use the practical expedients in future periods if they become applicable. b) Standards, interpretations and amendments published by the IASB that will be effective for periods beginning on or after January 1, 2022: The Company does not anticipate any significant impact on the Consolidated Financial Statements derived from the application of the new standards and amendments that will be effective for annual periods beginning on or after January 1, 2021, although it is currently still in the process of evaluating such application. The Company has not early adopted any standard, interpretation or amendment that has been issued but is not yet effective. Effect of IBOR reform Following the financial crisis, the reform and replacement of benchmark interest rates such as LIBOR and IBORs has become a priority for global regulators. There remains some uncertainty around the timing and precise nature of these changes. The Company currently has several contracts which reference LIBOR and extend beyond 2021. These contracts are disclosed within the tables below. It is currently expected that alternative RFRs will replace LIBOR. There remain key differences between LIBOR and RFRs. LIBOR is a ‘term rate’, which means that it is published for a borrowing period (such as three months or six months) and is ‘forward looking’, because it is published at the beginning of the borrowing period. RFRs may be based on overnight rates from actual transactions and published at the end of the overnight borrowing period. Furthermore, LIBOR includes a credit spread over the risk-free rate, which RFRs currently may not. To transition existing contracts and agreements that reference LIBOR to RFRs, adjustments for term differences and credit differences might need to be applied to RFRs, to enable the two benchmark rates to be economically equivalent on transition. At the time of reporting, industry working groups are reviewing methodologies for calculating adjustments between LIBOR and RFRs. Risks arising from the transition relate principally to the potential impact of rate differences if the debt and related hedging instruments do not transition to the new benchmark interest rate at the same time and/or the rates move by different amounts. This could result in hedge ineffectiveness and a net cash expense to the Company as a result of the IBOR transition. The following table contains details of the financial instruments that the Company holds as of December 31, 2021 which reference LIBOR and have not yet transitioned to RFRs: Carrying amount as of December 31, 2021 Assets Liabilities Non-derivative assets and liabilities referenced to LIBOR Measured at amortized cost Project debt - 1,068,501 Total non-derivatives items - 1,068,501 Derivatives - 62,571 Total assets and liabilities referenced to LIBOR - 1,131,072 The following table contains details of only the hedging instruments used in the Company's hedging strategies which reference LIBOR and have not yet transitioned to RFRs, such that relief(s) of phase 1 and phase 2 amendments to IFRS 9 and IFRS 7 for IBOR reform, effective January 1 st st Carrying amount as of December 31, 2021 Notional Assets Liabilities Balance sheet line item(s) 2021 changes in fair value used for calculating hedge ineffectiveness Cash flow hedge Interest rate swaps 939,670 - 62,571 Derivative liabilities 30,013 Total cash flow hedges 939,670 - 62,571 30,013 In calculating the change in fair value attributable to the hedged risk of floating-rate debt, the Company has made the following assumptions that reflect its current expectations: - The floating-rate debt will move to RFRs during 2022, and the spread will be similar to the spread included in the interest rate swap used as the hedging instrument; - No other changes to the terms of the floating-rate debt are anticipated;
Principles to include and record companies in the consolidated financial statements	2.2. Principles to include and record companies in the consolidated financial statements Companies included in these Consolidated Financial Statements are accounted for as subsidiaries as long as Atlantica has control over them and are accounted for as investments under the equity method as long as Atlantica has significant influence over them, in the periods presented. a) Controlled entities Control is achieved when the Company: • Has power over the investee; • Is exposed, or has rights, to variable returns from its involvement with the investee; and • Has the ability to use its power to affect its returns. The Company reassesses whether or not it controls an investee when facts and circumstances indicate that there are changes to one or more of the three elements of control listed above. The Company uses the acquisition method to account for business combinations of companies previously controlled by a third party. According to this method, identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. Any contingent consideration is recognized at fair value at the acquisition date and subsequent changes in its fair value are recognized in accordance with IFRS 9 in profit or loss. Acquisition related costs are expensed as incurred. The Company recognizes any non-controlling interest in the acquiree either at fair value or at the non-controlling interest’s proportionate share of the acquirer’s net assets on an acquisition by acquisition basis. All assets and liabilities between entities of the group, equity, income, expenses, and cash flows relating to transactions between entities of the group are eliminated in full. b) Investments accounted for under the equity method An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but is not control or joint control over those policies. The results and assets and liabilities of associates are incorporated in these financial statements using the equity method of accounting. Under the equity method, an investment in an associate is initially recognized in the statement of financial position at cost and adjusted thereafter to recognize changes in Atlantica´s share of net assets of the associate since the acquisition date. Any goodwill relating to the associate is included in the carrying amount of the investment and is not tested for impairment separately. Controlled entities and associates included in these financial statements as of December 31, 2021 and 2020 are set out in appendices.
Contracted concessional assets	2.3. Contracted concessional assets Contracted concessional assets correspond to the assets of the Company recorded as intangible or financial assets in accordance with IFRIC 12, property plant and equipment in accordance with IAS 16 and financial asset in accordance with IFRS 16. The assets accounted for by the Company as concessions include renewable energy assets, transmission lines, efficient natural gas assets and water plants. The useful life of these assets is approximately the same as the length of the concession arrangement. The infrastructure used in a concession can be classified as an intangible asset or a financial asset, depending on the nature of the payment entitlements established in the agreement. The application of IFRIC 12 requires extensive judgement in relation to, among other factors, (i) the identification of certain infrastructures and contractual agreements in the scope of IFRIC 12, (ii) an understanding of the nature of the payments in order to determine the classification of the infrastructure as a financial asset or as an intangible asset and (iii) the timing and recognition of revenue from construction and concessionary activity. Under the terms of contractual arrangements within the scope of this interpretation, the operator shall recognize and measure revenue in accordance with IFRS 15 for the services it performs. a) Intangible asset The Company recognizes an intangible asset to the extent that it receives a right to charge final customers for the use of the infrastructure. This intangible asset is subject to the provisions of IAS 38 and is amortized linearly, taking into account the estimated period of commercial operation of the infrastructure which coincides with the concession period. Once the infrastructure is in operation, the treatment of income and expense is as follows: - Revenues from the updated annual revenue for the contracted concession, as well as revenues from operations and maintenance services are recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. - Operating and maintenance costs and general overheads and administrative costs are recorded in accordance with the nature of the cost incurred (amount due) in each period. b) Financial asset The Company recognizes a financial asset when demand risk is assumed by the grantor, to the extent that the concession holder has an unconditional right to receive payments for the asset. This asset is recognized at the fair value of the construction services provided, considering upgrade services in accordance with IFRS 15, if any. The financial asset is subsequently recorded at amortized cost calculated according to the effective interest method, using a theoretical internal return rate specific to the asset. Revenue from operations and maintenance services is recognized in each period according to IFRS 15 “Revenue from contracts with Customers”. Allowance for expected credit losses According to IFRS 9, Atlantica recognizes an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive. There are two main approaches to applying the ECL model according to IFRS 9: the general approach which involves a three stage approach, and the simplified approach, which can be applied to trade receivables, contract assets and lease receivables. Atlantica applies the simplified approach. Under this approach, there is no need to monitor for significant increases in credit risk and entities will be required to measure lifetime expected credit losses at the end of each reporting period. The key elements of the ECL calculations, based on external sources of information, are the following: - the Probability of Default (“PD”) is an estimate of the likelihood of default over a given time horizon. Atlantica calculates PD based on Credit Default Swaps spreads (“CDS”); - the Exposure at Default (“EAD”) is an estimate of the exposure at a future default date; - the Loss Given Default (“LGD”) is an estimate of the loss arising in the case where a default occurs at a given time. It is based on the difference between the contractual cash flows due and those that the Company would expect to receive. It is expressed as a percentage of the EAD. c) Property, plant and equipment Property, plant and equipment is measured at historical cost, including all expenses directly attributable to the acquisition, less depreciation and impairment losses, with the exception of land, which is presented net of any impairment losses. Once the infrastructure is in operation, the treatment of income and expenses is the same as the one described above for intangible asset. d) Right-of-use assets Main right of use agreements correspond to land rights. The Company recognizes right-of-use assets under IFRS 16, at the commencement date of the lease (i.e. the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities (Note 2.11). The cost of right-of-use assets includes the amount of lease liabilities recognised, initial direct costs incurred, and lease payments made at or before the commencement date less any lease incentives received. Right-of-use assets are depreciated on a straight-line basis over the shorter of the lease term and the estimated useful lives of the assets. e) R evenue Recognition According to IFRS 15, Revenue from Contracts with Customers, the Company assesses the goods and services promised in the contracts with the customers and identifies as a performance obligation each promise to transfer to the customer a good or service (or a bundle of goods or services). In the case of contracts related to intangible or financial assets under IFRIC 12, the performance obligation of the Company is the operation of the asset. The contracts between the parties set the price of the service in an orderly transaction and therefore corresponds to the fair value of the service provided. The service is satisfied over time. The same conclusion applies to concessional assets that are classified as tangible assets under IAS 16 or leases under IFRS 16. All of the transaction prices of assets under IFRIC 12 are fixed and included as part of the long-term PPAs of the Company as disclosed in Appendix III-2. In the case of financial asset under IFRIC 12, the financial asset accounts for the payments to be received from the client over the residual life of the contract, discounted at a theoretical internal rate of return for the project. In each period, the financial asset is reduced by the amounts received from the client and increased by any capital expenditure that the project may incur and by the effect of unwinding the discount of the financial asset at the theoretical internal rate of return. The increase of the financial asset deriving from the unwinding of the discount of the financial asset is recorded as revenue in each period. Revenue will therefore differ from the actual billings made by the asset to the client in each period. In the case of Spain, according to Royal Decree 413/2014, solar electricity producers receive: (i) the market price for the power they produce, (ii) a payment based on the standard investment cost for each type of plant (without any relation whatsoever to the amount of power they generate) and (iii) an “operating payment” (in €/MWh produced). The principle driving this economic regime is that the payments received by a renewable energy producer should be equivalent to the costs that they are unable to recover on the electricity pool market where they compete with non-renewable technologies. This economic regime seeks to allow a “well-run and efficient enterprise” to recover the costs of building and running a plant, plus a reasonable return on investment (project investment rate of return). Some of the Company´s assets in Spain are receiving a remuneration based on a 7.09% reasonable rate of return until December 31, 2025 while others are receiving a remuneration based on a 7.398% reasonable rate of return until December 31, 2031.
Asset impairment	2.4. Asset impairment Atlantica reviews its contracted concessional assets to identify any indicators of impairment at least annually, except for ECL assessment for financial assets which is discussed in note 2.3. When impairment indicators exist, the company calculates the recoverable amount of the asset. The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use, defined as the present value of the estimated future cash flows to be generated by the asset. In the event that the asset does not generate cash flows independently of other assets, the Company calculates the recoverable amount of the Cash Generating Unit (‘CGU’) to which the asset belongs. When the carrying amount of the CGU to which these assets belong is higher than its recoverable amount, the assets are impaired. Assumptions used to calculate value in use include a discount rate and projections considering real data based in the contracts terms and projected changes in both selling prices and costs. The discount rate is estimated by Management, to reflect both changes in the value of money over time and the risks associated with the specific CGU. For contracted concessional assets, with a defined useful life and with a specific financial structure, cash flow projections until the end of the project are considered and no relevant terminal value is assumed. Contracted concessional assets have a contractual structure that permits the Company to estimate quite accurately the costs of the project and revenue during the life of the project. Projections take into account real data based on the contract terms and fundamental assumptions based on specific reports prepared internally and third-party reports, assumptions on demand and assumptions on production. Additionally, assumptions on macro-economic conditions are taken into account, such as inflation rates, future interest rates, etc. and sensitivity analyses are performed over all major assumptions which can have a significant impact in the value of the asset. Cash flow projections of CGUs are calculated in the functional currency of those CGUs and are discounted using rates that take into consideration the risk corresponding to each specific country and currency. Taking into account that in most CGUs the specific financial structure is linked to the financial structure of the projects that are part of those CGUs, the discount rate used to calculate the present value of cash-flow projections is based on the weighted average cost of capital (WACC) for the type of asset, adjusted, if necessary, in accordance with the business of the specific activity and with the risk associated with the country where the project is performed. In any case, sensitivity analyses are performed, especially in relation to the discount rate used and fair value changes in the main business variables, in order to ensure that possible changes in the estimates of these items do not impact the recovery of recognized assets. In the event that the recoverable amount of an asset is lower than its carrying amount, an impairment charge for the difference would be recorded in the income statement under the item “Depreciation, amortization and impairment charges”. An assessment is made at each reporting date to determine whether there is an indication that previously recognized impairment losses no longer exist or have decreased. If such indication exists, the Company estimates the CGU’s recoverable amount. A previously recognized impairment loss is reversed only if there has been a change in the assumptions used to determine the asset’s recoverable amount since the last impairment loss was recognized. The reversal is limited so that the carrying amount of the asset does not exceed its recoverable amount, nor exceed the carrying amount that would have been determined, net of depreciation, had no impairment loss been recognized for the asset in prior years. Such reversal is recognized in the income statement.
Loans and accounts receivable	2.5. Loans and accounts receivable Loans and accounts receivable are non-derivative financial assets with fixed or determinable payments, not listed on an active market. In accordance with IFRIC 12, certain assets under concessions qualify as financial assets and are recorded as is described in Note 2.3. Pursuant to IFRS 9, an impairment loss is recognized if the carrying amount of these assets exceeds the present value of future cash flows discounted at the initial effective interest rate. Loans and accounts receivable are initially recognized at fair value plus transaction costs and are subsequently measured at amortized cost in accordance with the effective interest rate method. Interest calculated using the effective interest rate method is recognized under other financial income within financial income.
Derivative financial instruments and hedging activities	2.6. Derivative financial instruments and hedging activities Derivatives are recognized at fair value in the statement of financial position. The Company maintains both derivatives designated as hedging instruments in hedging relationships, and derivatives to which hedge accounting is not applied. When hedge accounting is applied, hedging strategy and risk management objectives are documented at inception, as well as the relationship between hedging instruments and hedged items. Effectiveness of the hedging relationship needs to be assessed on an ongoing basis. Effectiveness tests are performed prospectively at inception and at each reporting date. The Company analyses on each date if all these requirements are met: - there is an economic relationship between the hedged item and the hedging instrument; - the effect of credit risk does not dominate the value changes that result from that economic relationship; and - the hedge ratio of the hedging relationship is the same as that resulting from the quantity of the hedged item that the Company actually hedges and the quantity of the hedging instrument that the Company uses to hedge that quantity of hedged item. Ineffectiveness is measured following the accumulated dollar offset method. In all cases, current Company´s hedging relationships are considered cash flow hedges. Under this model, the effective portion of changes in fair value of derivatives designated as cash flow hedges are recorded temporarily in equity and are subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffective portion of the hedged transaction is recorded in the consolidated income statement as it occurs. When interest rate options are designated as hedging instruments, the time value is excluded from the hedging instrument as permitted by IFRS 9. Changes in the effective portion of the intrinsic are recorded in equity and subsequently reclassified from equity to profit or loss in the same period or periods during which the hedged item affects profit or loss. Any ineffectiveness is recorded as financial income or expense as it occurs. Changes in options time value is recorded as cost of hedging. More precisely, considering that the hedged items are, in all cases, time period hedged item, changes in time value is recognized in other comprehensive income to the extent that it relates to the hedged item. The time value at the date of designation of the option as a hedging instrument, to the extent that it relates to the hedged item, is amortized on a systematic and rational basis over the period during which the hedge adjustment for the option’s intrinsic value could affect profit or loss. When the hedging instrument matures or is sold, or when it no longer meets the requirements to apply hedge accounting, accumulated gains and losses recorded in equity remain as such until the forecast transaction is ultimately recognized in the income statement. However, if it becomes unlikely that the forecast transaction will actually take place, the accumulated gains and losses in equity are recognized immediately in the income statement. Any change in fair value of derivatives instruments to which hedge accounting is not applied is directly recorded in the income statement.
Fair value estimates	2.7. Fair value estimates Financial instruments measured at fair value are presented in accordance with the following level classification based on the nature of the inputs used for the calculation of fair value: - Level 1: Inputs are quoted prices in active markets for identical assets or liabilities. - Level 2: Fair value is measured based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly (i.e. as prices) or indirectly (i.e. derived from prices). - Level 3: Fair value is measured based on unobservable inputs for the asset or liability. In the event that prices cannot be observed, management shall make its best estimate of the price that the market would otherwise establish based on proprietary internal models which, in the majority of cases, use data based on observable market parameters as significant inputs (Level 2) but occasionally use market data that is not observed as significant inputs (Level 3). Different techniques can be used to make this estimate, including extrapolation of observable market data. The best indication of the initial fair value of a financial instrument is the price of the transaction, except when the value of the instrument can be obtained from other transactions carried out in the market with the same or similar instruments, or valued using a valuation technique in which the variables used only include observable market data, mainly interest rates. Differences between the transaction price and the fair value based on valuation techniques that use data that is not observed in the market, are not initially recognized in the income statement. Atlantica derivatives correspond primarily to the interest rate swaps designated as cash flow hedges, which are classified as Level 2. Description of the valuation method Interest rate swap valuations consist in valuing separately the swap part of the contract and the credit risk. The methodology used by the market and applied by Atlantica to value interest rate swaps is to discount the expected future cash flows according to the parameters of the contract. Variable interest rates, which are needed to estimate future cash flows, are calculated using the curve for the corresponding currency and extracting the implicit rates for each of the reference dates in the contract. These estimated flows are discounted with the swap zero curve for the reference period of the contract. The effect of the credit risk on the valuation of the interest rate swaps depends on the future settlement. If the settlement is favorable for the Company, the counterparty credit spread will be incorporated to quantify the probability of default at maturity. If the expected settlement is negative for the Company, its own credit risk will be applied to the final settlement. Classic models for valuing interest rate swaps use deterministic valuation of the future of variable rates, based on future outlooks. When quantifying credit risk, this model is limited by considering only the risk for the current paying party, ignoring the fact that the derivative could change sign at maturity. A payer and receiver swaption model is proposed for these cases. This enables the associated risk in each swap position to be reflected. Thus, the model shows each agent’s exposure, on each payment date, as the value of entering into the ‘tail’ of the swap, i.e. the live part of the swap. Variables (Inputs) Interest rate derivative valuation models use the corresponding interest rate curves for the relevant currency and underlying reference in order to estimate the future cash flows and to discount them. Market prices for deposits, futures contracts and interest rate swaps are used to construct these curves. Interest rate options (caps and floors) also use the volatility of the reference interest rate curve. To estimate the credit risk of the counterparty, the credit default swap (CDS) spreads curve is obtained in the market for important individual issuers. For less liquid issuers, the spreads curve is estimated using comparable CDSs or based on the country curve. To estimate proprietary credit risk, prices of debt issues in the market and CDSs for the sector and geographic location are used. The fair value of the financial instruments that results from the aforementioned internal models takes into account, among other factors, the terms and conditions of the contracts and observable market data, such as interest rates, credit risk and volatility. The valuation models do not include significant levels of subjectivity, since these methodologies can be adjusted and calibrated, as appropriate, using the internal calculation of fair value and subsequently compared to the corresponding actively traded price. However, valuation adjustments may be necessary when the listed market prices are not available for comparison purposes.
Trade and other receivables	2.8. Trade and other receivables Trade and other receivables are amounts due from customers for sales in the normal course of business. They are recognized initially at fair value and subsequently measured at amortized cost using the effective interest rate method, less allowance for doubtful accounts. Trade receivables due in less than one year are carried at their face value at both initial recognition and subsequent measurement, provided that the effect of not discounting flows is not significant. An allowance for doubtful accounts is recorded when there is objective evidence that the Company will not be able to recover all amounts due as per the original terms of the receivables. The Company has established a provision matrix that is based on its historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment.
Cash and cash equivalents	2.9. Cash and cash equivalents Cash and cash equivalents include cash in hand, cash in bank and other highly-liquid current investments with an original maturity of three months or less which are held for the purpose of meeting short-term cash commitments.
Grants	2.10. Grants Grants are recognized at fair value when it is considered that there is a reasonable assurance that the grant will be received and that the necessary qualifying conditions, as agreed with the entity assigning the grant, will be adequately complied with. Grants are recorded as liabilities in the consolidated statement of financial position and are recognized in “Other operating income” in the consolidated income statement based on the period necessary to match them with the costs they intend to compensate. In addition, as described in Note 2.11 below, grants correspond also to loans with interest rates below market rates, for the initial difference between the fair value of the loan and the proceeds received.
Loans and borrowings	2.11. Loans and borrowings Loans and borrowings are initially recognized at fair value, net of transaction costs incurred. Borrowings are subsequently measured at amortized cost and any difference between the proceeds initially received (net of transaction costs incurred in obtaining such proceeds) and the repayment value is recognized in the consolidated income statement over the duration of the borrowing using the effective interest rate method. In the case of modification of terms of loans and borrowings, the Company determines whether the modification constitutes an exchange or an extinguishment of the debt instrument. In determining whether there is an exchange, the Company evaluates whether the redemption of the old debt and the issuance of new debt were negotiated in contemplation of one another (qualitative assessment) and performs the 10 per cent test to determine if the terms of the modified debt are substantially different (the net present value of the modified cash flows, including any fees paid net of any fees received, is higher than 10% different from the net present value of the remaining cash flows of the liability prior to the modification, both discounted at the original effective interest rate). When the terms of the modified liability are substantially different, the modification is accounted for as an extinguishment of the original liability and recognition of a new liability. Loans with interest rates below market rates are initially recognized at fair value in liabilities and the difference between proceeds received from the loan and its fair value is initially recorded within “Grants and Other liabilities” in the consolidated statement of financial position, and subsequently recorded in “Other operating income” in the consolidated income statement when the costs financed with the loan are expensed. Lease liabilities are recognized by the Company at the commencement date of the lease at the present value of lease payments to be made over the lease term. The lease payments include the exercise price of a purchase option reasonably certain to be exercised by the Company and payments of penalties for terminating the lease, if the lease term reflects the Company exercising the option to terminate. In calculating the present value of lease payments, the Company uses its incremental borrowing rate at the lease commencement date considering that the interest rate implicit in the lease is not readily determinable.
Bonds and notes	2.12. Bonds and notes The Company initially recognizes ordinary notes at fair value, net of issuance costs incurred. Subsequently, notes are measured at amortized cost until settlement upon maturity. Any other difference between the proceeds obtained (net of transaction costs) and the redemption value is recognized in the consolidated income statement over the term of the debt using the effective interest rate method. Convertible bonds or notes or debt issued with conversion features must be separated into liability and equity components if the feature meets the equity classification conditions in IAS 32. The issuer separates the instrument into its components by determining the fair value of the liability component and then deducting that amount from the fair value of the instrument as a whole; the residual amount is allocated to the equity component. If the equity conversion feature does not satisfy the equity classification conditions in IAS 32, it is bifurcated as an embedded derivative unless the issuer elects to apply the fair value option to the convertible debt. The embedded derivative is initially recognized at fair value and classified as derivatives in the statement of financial position. Changes in the fair value of the embedded derivatives are subsequently accounted for directly through the income statement. The debt element of the bond or note (the host contract), will be initially valued as the difference between the consideration received from the holders for the instrument and the value of the embedded derivative, and thereafter at amortized cost using the effective interest method.
Income taxes	2.13. Income taxes Current income tax expense is calculated on the basis of the tax laws in force as of the date of the consolidated statement of financial position in the countries in which the subsidiaries and associates operate and generate taxable income. Deferred income tax is calculated in accordance with the liability method, based upon the temporary differences arising between the carrying amount of assets and liabilities and their tax base. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the year when the asset is realized or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted at the reporting date. Deferred tax assets are recognized to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carry forward of unused tax credits and unused tax losses can be utilized.
Trade payables and other liabilities	2.14. Trade payables and other liabilities Trade payables are obligations arising from purchases of goods and services in the ordinary course of business and are recognized initially at fair value and are subsequently measured at their amortized cost using the effective interest method. Other liabilities are obligations not arising in the normal course of business and which are not treated as financing transactions. Advances received from customers are recognized as “Trade payables and other current liabilities”.
Foreign currency transactions	2.15. Foreign currency transactions The Consolidated Financial Statements are presented in U.S. dollars, which is Atlantica’s functional and presentation currency. Financial statements of each subsidiary within the Company are measured in the currency of the principal economic environment in which the subsidiary operates, which is the subsidiary’s functional currency. Transactions denominated in a currency different from the subsidiary’s functional currency are translated into the subsidiary’s functional currency applying the exchange rates in force at the time of the transactions. Foreign currency gains and losses that result from the settlement of these transactions and the translation of monetary assets and liabilities denominated in foreign currency at the year-end rates are recognized in the consolidated income statement, unless they are deferred in equity, as occurs with cash flow hedges and net investment in foreign operations hedges. Assets and liabilities of subsidiaries with a functional currency different from the Company’s reporting currency are translated to U.S. dollars at the exchange rate in force at the closing date of the financial statements. Income and expenses are translated into U.S. dollars using the average annual exchange rate, which does not differ significantly from using the exchange rates of the dates of each transaction. The difference between equity translated at the historical exchange rate and the net financial position that results from translating the assets and liabilities at the closing rate is recorded in equity under the heading “Accumulated currency translation differences”. Results of companies carried under the equity method are translated at the average annual exchange rate.
Equity	2.16. Equity The Company has recyclable balances in its equity, corresponding mainly to hedge reserves and translation differences arising from currency conversion in the preparation of these Consolidated Financial Statements. These balances have been presented separately in Equity. Non-controlling interest represents interest of other partners in entities included in these Consolidated Financial Statements which are not fully owned by Atlantica as of the dates presented. Share Capital, Share Premium and Capital Reserves represent the Parent’s net investment in the entities included in these Consolidated Financial Statements. The costs of issuing equity instruments are accounted for as a deduction from equity.
Provisions and contingencies	2.17. Provisions and contingencies Provisions are recognized when: - there is a present obligation, either legal or constructive, as a result of past events; - it is more likely than not that there will be a future outflow of resources to settle the obligation; and the amount has been reliably estimated. Provisions are measured at the present value of the expected outflows required to settle the obligation. The discount rate used is a current pre-tax rate that reflects, when appropriate, the risks specific to the liability. The increase in the provision due to the passage of time is then recognized as a financial expense. The balance of provisions disclosed in the Notes reflects management’s best estimate of the potential exposure as of the date of preparation of the Consolidated Financial Statements. Contingent liabilities are possible obligations, existing obligations with low probability of a future outflow of economic resources and existing obligations where the future outflow cannot be reliably estimated. Contingences are not recognized in the consolidated statements of financial position unless they have been acquired in a business combination. Some companies of Atlantica have dismantling provisions, which are intended to cover future expenditure related to the dismantlement of the plants in situations where it is likely to be settled with an outflow of resources in the long term (over 5 years). Such provisions are accrued when the obligation for dismantling, removing and restoring the site on which the plant is located, is incurred, which is usually during the construction period. The provision is measured in accordance with IAS 37, “Provisions, Contingent Liabilities and Contingent Assets” and is recorded as a liability under the heading “Grants and other liabilities” of the Financial Statements, and the corresponding entry as part of the cost of the plant under the heading “Contracted concessional assets.” The estimated future costs of dismantling are reviewed annually if conditions have changed and adjusted appropriately. The impact of changes in the estimate of future costs or in the timing of when such costs will be incurred, on the dismantling provision, is recorded against an increase or decrease of the cost of the plant.
Earnings per share	2.18. Earnings per share Basic earnings per share is calculated by dividing the profit for the period attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the period. Diluted earnings per share is calculated by dividing the profit for the period attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the period plus the weighted average number of ordinary shares that would be issued on conversion of all the dilutive potential ordinary shares into ordinary shares.
Significant judgements and estimates	2.19. Significant judgements and estimates Some of the accounting policies applied require the application of significant judgement by management to select the appropriate assumptions to determine these estimates. These assumptions and estimates are based on the historical experience, advice from experienced consultants, forecasts and other circumstances and expectations as of the close of the financial period. The assessment is considered in relation to the global economic situation of the industries and regions where the Company operates, taking into account future development of the businesses of the Company. By their nature, these judgements are subject to an inherent degree of uncertainty; therefore, actual results could materially differ from the estimates and assumptions used. In such cases, the carrying values of assets and liabilities are adjusted. The most critical accounting policies, which reflect significant management estimates and judgement to determine amounts in these Consolidated Financial Statements, are as follows: - Assessment of contracted concessional agreements. - Impairment of intangible assets and property, plant and equipment. - Assessment of control. - Derivative financial instruments and fair value estimates. - Income taxes and recoverable amount of deferred tax assets. As of the date of preparation of these Consolidated Financial Statements, no relevant changes in the estimates made are anticipated and, therefore, no significant changes in the value of the assets and liabilities recognized at December 31, 2021, are expected. Although these estimates and assumptions are being made using all available facts and circumstances, it is possible that future events may require management to amend such estimates and assumptions in future periods. Changes in accounting estimates are recognized prospectively, in accordance with IAS 8, in the consolidated income statement of the year in which the change occurs.

Nature of the business (Tables)

Nature of the business (Tables)	12 Months Ended
Nature of the business (Tables)	Dec. 31, 2021
Nature of the business [Abstract]
Overview of main assets	The following table provides an overview of the main contracted concessional assets the Company owned or had an interest in as of December 31, 2021: Assets Type Ownership Location Currency (9) Capacity (Gross) Counterparty Credit Ratings (10) COD* Contract Years Remaining (16) Solana Renewable (Solar) 100% Arizona (USA) USD 280 MW BBB+/A3/BBB+ 2013 22 Mojave Renewable (Solar) 100% California (USA) USD 280 MW BB-/ -- /BB 2014 18 Coso Renewable (Geothermal) 100% California (USA) USD 135 MW Investment Grade (11) 1987-1989 17 Elkhorn Valley Renewable (Wind) 49% Oregon (USA) USD 101 MW BBB/A3/-- 2007 6 Prairie Star Renewable (Wind) 49% Minnesota (USA) USD 101 MW --/A3/A- 2007 6 Twin Groves II Renewable (Wind) 49% Illinois (USA) USD 198 MW BBB-/Baa2/-- 2008 4 Lone Star II Renewable (Wind) 49% Texas (USA) USD 196 MW Not rated 2008 1 Chile PV 1 Renewable (Solar) 35% (1) Chile USD 55 MW N/A 2016 N/A Chile PV 2 Renewable (Solar) 35% (1) Chile USD 40 MW Not rated 2017 9 La Sierpe Renewable (Solar) 100% Colombia COP 20 MW Not rated 2021 14 Palmatir Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (12) 2014 12 Cadonal Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- (12) 2014 13 Melowind Renewable (Wind) 100% Uruguay USD 50 MW BBB/Baa2/BBB- 2015 14 Mini-Hydro Renewable (Hydraulic) 100% Peru USD 4 MW BBB+/Baa1/BBB 2012 11 Solaben 2 & 3 Renewable (Solar) 70% (2) Spain Euro 2x50 MW A/Baa1/A- 2012 16/16 Solacor 1 & 2 Renewable (Solar) 87% (3) Spain Euro 2x50 MW A/Baa1/A- 2012 15/15 PS10 & PS20 Renewable (Solar) 100% Spain Euro 31 MW A/Baa1/A- 2007&2009 10/12 Helioenergy 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2011 15/15 Helios 1 & 2 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2012 15/16 Solnova 1, 3 & 4 Renewable (Solar) 100% Spain Euro 3x50 MW A/Baa1/A- 2010 13/13/14 Solaben 1 & 6 Renewable (Solar) 100% Spain Euro 2x50 MW A/Baa1/A- 2013 17/17 Seville PV Renewable (Solar) 80% (4) Spain Euro 1 MW A/Baa1/A- 2006 14 Italy PV 1 Renewable (Solar) 100% Italy Euro 1.6 MW BBB/Baa3/BBB 2010 9 Italy PV 2 Renewable (Solar) 100% Italy Euro 2.1 MW BBB/Baa3/BBB 2011 9 Italy PV 3 Renewable (Solar) 100% Italy Euro 2.5 MW BBB/Baa3/BBB 2012 10 Kaxu Renewable (Solar) 51% (5) South Africa Rand 100 MW BB-/Ba2/BB- (13) 2015 13 Calgary Efficient natural gas &heat 100% Canada CAD 55 MWt ~41% A+ or higher (14) 2010 19 ACT Efficient natural gas & heat 100% Mexico USD 300 MW BBB/ Ba3/BB- 2013 11 Monterrey Efficient natural gas &heat 30% Mexico USD 142 MW Not rated 2018 17 ATN (15) Transmission line 100% Peru USD 379 miles BBB+/Baa1/BBB 2011 19 ATS Transmission line 100% Peru USD 569 miles BBB+/Baa1/BBB 2014 22 ATN 2 Transmission line 100% Peru USD 81 miles Not rated 2015 11 Quadra 1 & 2 Transmission line 100% Chile USD 49 miles/32 miles Not rated 2014 13/13 Palmucho Transmission line 100% Chile USD 6 miles BBB/ -- /A- 2007 16 Chile TL3 Transmission line 100% Chile USD 50 miles A/A1/A- 1993 Regulated Skikda Water 34.2% (6) Algeria USD 3.5 M ft3/day Not rated 2009 12 Honaine Water 25.5% (7) Algeria USD 7 M ft3/day Not rated 2012 16 Tenes Water 51% (8) Algeria USD 7 M ft3/day Not rated 2015 18 (1) 65% of the shares in Chile PV 1 and Chile PV 2 are indirectly held by financial partners through the renewable energy platform of the Company in Chile. (2) Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3. (3) JGC holds 13% of the shares in each of Solacor 1 and Solacor 2. (4) Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV. (5) Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%). (6) Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.8%. (7) Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%. (8) Algerian Energy Company, SPA owns 49% of Tenes. (9) Certain contracts denominated in U.S. dollars are payable in local currency. (10) Reflects the counterparty’s credit ratings issued by Standard & Poor’s Ratings Services, or S&P, Moody’s Investors Service Inc., or Moody’s, and Fitch Ratings Ltd, or Fitch. (11) Refers to the credit rating of two Community Choice Aggregators: Silicon Valley Clean Energy and Monterrey Bar Community Power, both with A Rating from S&P and Southern California Public Power Authority. The third off-taker is not rated. (12) Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated. (13) Refers to the credit rating of the Republic of South Africa. The off-taker is Eskom, which is a state-owned utility company in South Africa. (14) Refers to the credit rating of a diversified mix of 22 high credit quality clients (~41% A+ rating or higher, the rest is unrated). (15) Including ATN Expansion 1 & 2. (16) As of December 31, 2021. (*) Commercial Operation Date.

Significant accounting polici_3

Significant accounting policies (Tables)	12 Months Ended
Significant accounting policies (Tables)	Dec. 31, 2021
Significant accounting policies [Abstract]
Details of financial instruments	The following table contains details of the financial instruments that the Company holds as of December 31, 2021 which reference LIBOR and have not yet transitioned to RFRs: Carrying amount as of December 31, 2021 Assets Liabilities Non-derivative assets and liabilities referenced to LIBOR Measured at amortized cost Project debt - 1,068,501 Total non-derivatives items - 1,068,501 Derivatives - 62,571 Total assets and liabilities referenced to LIBOR - 1,131,072
Details of hedging instruments	The following table contains details of only the hedging instruments used in the Company's hedging strategies which reference LIBOR and have not yet transitioned to RFRs, such that relief(s) of phase 1 and phase 2 amendments to IFRS 9 and IFRS 7 for IBOR reform, effective January 1 st st Carrying amount as of December 31, 2021 Notional Assets Liabilities Balance sheet line item(s) 2021 changes in fair value used for calculating hedge ineffectiveness Cash flow hedge Interest rate swaps 939,670 - 62,571 Derivative liabilities 30,013 Total cash flow hedges 939,670 - 62,571 30,013

Financial information by segm_2

Financial information by segment (Tables)	12 Months Ended
Financial information by segment (Tables)	Dec. 31, 2021
Financial information by segment [Abstract]
Revenues and Adjusted EBITDA, assets and liabilities by operating segments and business sectors	a) The following tables show Revenues and Adjusted EBITDA by operating segments and business sectors for the years 2021, 2020 and 2019: Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Geography 2021 2020 2019 2021 2020 2019 North America 395,775 330,921 332,965 311,803 279,365 307,242 South America 154,985 151,460 142,207 119,547 120,023 115,346 EMEA 660,989 530,879 536,280 393,038 396,735 398,967 Total 1,211,749 1,013,260 1,011,452 824,388 796,123 821,555 Revenue Adjusted EBITDA For the year ended December 31, For the year ended December 31, Business sectors 2021 2020 2019 2021 2020 2019 Renewable energy 928,525 753,089 761,090 602,583 576,285 604,080 Efficient natural gas & Heat 123,692 111,030 122,281 99,935 101,006 109,200 Transmission lines 105,680 106,042 103,453 83,635 87,272 85,657 Water 53,852 43,099 24,629 38,235 31,560 22,618 Total 1,211,749 1,013,260 1,011,452 824,388 796,123 821,555 The reconciliation of segment Adjusted EBITDA with the profit/(loss) attributable to the parent company is as follows: For the year ended December 31, 2021 2020 2019 Profit/(loss) attributable to the Company (30,080 ) 11,968 62,135 Profit attributable to non-controlling interests 19,162 4,906 12,473 Income tax expense 36,220 24,877 30,950 Financial expense, net 340,892 331,810 402,348 Depreciation, amortization, and impairment charges 439,441 408,604 310,755 Depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica's equity ownership) 18,753 13,958 2,894 Total segment Adjusted EBITDA 824,388 796,123 821,555
Assets and liabilities by geography	b) The assets and liabilities by geography and business sector at the end of 2021 and 2020 are as follows: Assets and liabilities by geography as of December 31, 2021: North America South America EMEA Balance as of December 31, 2021 Assets allocated Contracted concessional assets 3,355,669 1,231,276 3,434,623 8,021,568 Investments carried under the equity method 253,221 - 41,360 294,581 Current financial investments 135,224 28,155 44,000 207,379 Cash and cash equivalents (project companies) 171,744 74,149 287,655 533,548 Subtotal allocated 3,915,858 1,333,580 3,807,638 9,057,076 Unallocated assets Other non-current assets 268,876 Other current assets (including cash and cash equivalents at holding company level) 425,978 Subtotal unallocated 694,854 Total assets 9,751,930 North America South America EMEA Balance as of December 31, 2021 Liabilities allocated Long-term and short-term project debt 1,792,739 887,497 2,355,957 5,036,193 Grants and other liabilities 1,051,679 14,445 197,620 1,263,744 Subtotal allocated 2,844,418 901,942 2,553,577 6,299,937 Unallocated liabilities Long-term and short-term corporate debt 1,023,071 Other non-current liabilities 532,312 Other current liabilities 148,005 Subtotal unallocated 1,703,388 Total liabilities 8,003,325 Equity unallocated 1,748,605 Total liabilities and equity unallocated 3,451,993 Total liabilities and equity 9,751,930 Assets and liabilities by geography as of December 31, 2020: North America South America EMEA Balance as of December 31, 2020 Assets allocated Contracted concessional assets 3,073,785 1,211,952 3,869,681 8,155,418 Investments carried under the equity method 74,660 - 41,954 116,614 Current financial investments 129,264 27,836 42,984 200,084 Cash and cash equivalents (project companies) 206,344 70,861 255,530 532,735 Subtotal allocated 3,484,053 1,310,649 4,210,149 9,004,851 Unallocated assets Other non-current assets 242,044 Other current assets (including cash and cash equivalents at holding company level) 691,459 Subtotal unallocated 933,503 Total assets 9,938,354 North America South America EMEA Balance as of December 31, 2020 Liabilities allocated Long-term and short-term project debt 1,623,284 902,500 2,711,830 5,237,614 Grants and other liabilities 1,078,974 11,355 139,438 1,229,767 Subtotal allocated 2,702,258 913,855 2,851,268 6,467,381 Unallocated liabilities Long-term and short-term corporate debt 993,725 Other non-current liabilities 589,107 Other current liabilities 147,260 Subtotal unallocated 1,730,092 Total liabilities 8,197,473 Equity unallocated 1,740,881 Total liabilities and equity unallocated 3,470,973 Total liabilities and equity 9,938,354
Assets and liabilities by business sectors	Assets and liabilities by business sectors as of December 31, 2021: Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2021 Assets allocated Contracted concessional assets 6,533,408 517,247 805,987 164,926 8,021,568 Investments carried under the equity method 240,302 15,358 - 38,921 294,581 Current financial investments 10,761 128,461 27,813 40,344 207,379 Cash and cash equivalents (project companies) 442,213 25,392 44,574 21,369 533,548 Subtotal allocated 7,226,684 686,458 878,374 265,560 9,057,076 Unallocated assets Other non-current assets 268,876 Other current assets (including cash and cash equivalents at holding company level) 425,978 Subtotal unallocated 694,854 Total assets 9,751,930 Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2021 Liabilities allocated Long-term and short-term project debt 3,857,313 478,724 602,278 97,878 5,036,193 Grants and other liabilities 1,244,346 11,212 5,795 2,391 1,263,744 Subtotal allocated 5,101,659 489,936 608,073 100,269 6,299,937 Unallocated liabilities Long-term and short-term corporate debt 1,023,071 Other non-current liabilities 532,312 Other current liabilities 148,005 Subtotal unallocated 1,703,388 Total liabilities 8,003,325 Equity unallocated 1,748,605 Total liabilities and equity unallocated 3,451,993 Total liabilities and equity 9,751,930 Assets and liabilities by business sectors as of December 31, 2020: Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2020 Assets allocated Contracted concessional assets 6,632,611 502,285 842,595 177,927 8,155,418 Investments carried under the equity method 61,866 15,514 30 39,204 116,614 Current financial investments 6,530 124,872 27,796 40,886 200,084 Cash and cash equivalents (project companies) 397,465 67,955 46,045 21,270 532,735 Subtotal allocated 7,098,472 710,626 916,466 279,287 9,004,851 Unallocated assets Other non-current assets 242,044 Other current assets (including cash and cash equivalents at holding company level) 691,459 Subtotal unallocated 933,503 Total assets 9,938,354 Renewable energy Efficient natural gas & Heat Transmission lines Water Balance as of December 31, 2020 Liabilities allocated Long-term and short-term project debt 3,992,512 504,293 625,203 115,606 5,237,614 Grants and other liabilities 1,221,176 108 6,040 2,443 1,229,767 Subtotal allocated 5,213,688 504,401 631,243 118,049 6,467,381 Unallocated liabilities Long-term and short-term corporate debt 993,725 Other non-current liabilities 589,107 Other current liabilities 147,260 Subtotal unallocated 1,730,092 Total liabilities 8,197,473 Equity unallocated 1,740,881 Total liabilities and equity unallocated 3,470,973 Total liabilities and equity 9,938,354
Depreciation, amortization and impairment charges recognized	c) The amount of depreciation, amortization and impairment charges recognized for the years ended December 31, 2021, 2020 and 2019 are as follows: For the year ended December 31, Depreciation, amortization and impairment by geography 2021 2020 2019 North America (152,946 ) (197,643 ) (116,232 ) South America (57,214 ) (39,191 ) (47,844 ) EMEA (229,281 ) (171,770 ) (146,679 ) Total (439,441 ) (408,604 ) (310,755 ) For the year ended December 31, Depreciation, amortization and impairment by business sectors 2021 2020 2019 Renewable energy (432,138 ) (350,785 ) (286,907 ) Efficient natural gas & Heat 23,910 (26,563 ) 3,102 Transmission lines (31,286 ) (30,889 ) (27,490 ) Water 73 (367 ) 541 Total (439,441 ) (408,604 ) (310,755 )

Business combinations (Tables)

Business combinations (Tables)	12 Months Ended
Business combinations (Tables)	Dec. 31, 2021
Business combinations [Abstract]
Amount of assets and liabilities consolidated at the effective acquisition date	The fair value of assets and liabilities consolidated at the effective acquisition date is shown in the following table: Business combinations for the year ended December 31, 2021 Coso Other Total Contracted concessional assets (Note 6) 383,153 158,927 542,080 Deferred tax asset (Note 18) - 4,410 4,410 Other non-current assets 11,024 1,943 12,967 Cash & cash equivalents 6,363 14,649 21,012 Other current assets 14,378 46,679 61,057 Non-current Project debt (Note 15) (248,544 ) (39,808 ) (288,352 ) Current Project debt (Note 15) (13,415 ) (25,366 ) (38,781 ) Deferred tax liabilities (Note 18) - (4,910 ) (4,910 ) Other current and non-current liabilities (22,959 ) (64,825 ) (87,784 ) Non-controlling interests - (8,287 ) (8,287 ) Total net assets acquired at fair value 130,000 83,412 213,412 Asset acquisition – purchase price paid (130,000 ) (80,364 ) (210,364 ) Fair value of previously held 15 - (3,048 ) (3,048 ) Net result of business combinations - - - The fair value of assets and liabilities consolidated at the effective acquisition date is shown in the following table: Business combinations for the year ended December 31, 2020 Contracted concessional assets (Note 6) 172,321 Other non-current assets 356 Cash & cash equivalents 17,646 Other current assets 31,421 Non-current Project debt (Note 15) (149,585 ) Current Project debt (Note 15) (8,680 ) Other current and non-current liabilities (15,561 ) Non-controlling interests (25,308 ) Total net assets acquired at fair value 22,610 Asset acquisition - purchase price (22,610 ) Net result of business combinations -

Contracted concessional assets

Contracted concessional assets (Tables)	12 Months Ended
Contracted concessional assets (Tables)	Dec. 31, 2021
Contracted concessional assets [Abstract]
Movements of contracted concessional assets	a) The following table shows the movements of assets included in the heading “Contracted Concessional assets” for 2021: Cost Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2021 936,837 2,941 9,467,309 66,230 350,720 10,824,037 Additions 922 442 40,383 2,459 14,204 58,410 Subtractions - - (348 ) - (21,282 ) (21,630 ) Business combinations (Note 5) - - - 19,148 522,932 542,080 Currency translation differences (9,519 ) (540 ) (334,497 ) (5,019 ) (20,703 ) (370,278 ) Reclassification and other movements (53,715 ) - 29,692 - 10,539 (13,484 ) Total cost 874,525 2,843 9,202,539 82,818 856,410 11,019,135 Depreciation, amortization and impairment Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2021 (87,689 ) - (2,442,520 ) (10,060 ) (128,350 ) (2,668,619 ) Additions (418 ) - (424,181 ) (4,759 ) (31,003 ) (460,361 ) Reversal of impairment 24,929 - - - - 24,929 Currency translation differences 289 - 97,356 714 8,125 106,484 Total depreciation, amortization and impairment (62,889 ) - (2,769,345 ) (14,105 ) (151,228 ) (2,997,567 ) b) The following table shows the movements of assets included in the heading “Contracted Concessional assets” for 2020: Cost Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2020 872,945 3,459 9,183,011 60,618 264,564 10,384,597 Additions - - 29,213 1,832 4,310 35,355 Subtractions - - (71,706 ) (954 ) (223 ) (72,883 ) Business combinations (Note 5) 102,560 - - 385 63,916 166,861 Currency translation differences (8,166 ) (163 ) 326,791 4,349 18,153 340,964 Reclassification and other movements (30,502 ) (355 ) - - - (30,857 ) Total cost 936,837 2,941 9,467,309 66,230 350,720 10,824,037 Depreciation, amortization and impairment Financial assets under IFRIC 12 Financial assets under IFRS 16 (Lessor) Intangible assets under IFRIC 12 Intangible assets under IFRS 16 (Lessee) Property, plant and equipment under IAS 16 and other intangible assets under IAS 38 Total assets Total as of January 1, 2020 (57,258 ) - (2,055,946 ) (6,585 ) (103,679 ) (2,223,468 ) Additions (27,111 ) - (338,393 ) (3,527 ) (15,958 ) (384,989 ) Subtractions - - 17,571 634 49 18,253 Reversal of impairment - - 18,787 - - 18,787 Business combinations (Note 5) (3,797 ) - - - - (3,797 ) Currency translation differences 476 - (84,538 ) (581 ) (8,762 ) (93,405 ) Total depreciation, amortization and impairment (87,689 ) - (2,442,520 ) (10,060 ) (128,350 ) (2,668,619 )

Investments carried under the_2

Investments carried under the equity method (Tables)	12 Months Ended
Investments carried under the equity method (Tables)	Dec. 31, 2021
Investments carried under the equity method [Abstract]
Investments in associates	The table below shows the breakdown and the movement of the investments held in associates for 2021 and 2020: Investments in associates 2021 2020 Initial balance 116,614 139,925 Share of profit 12,304 510 Distributions (36,877 ) (23,703 ) Acquisitions 202,345 - Others (incl. currency translation differences) 195 (118 ) Final balance 294,581 116,614
Breakdown of investments held in associates	The tables below shows a breakdown of stand-alone amounts of assets, revenues and profit and loss as well as other information of interest for the years 2021 and 2020 for the associated companies: Company % Shares Non- current assets Current assets Project Other non- current liabilities Other current liabilities Revenue Operating profit/ (loss) Net profit/ (loss) Investment under the equity method 2007 Vento II, LLC () 49.00 459,037 13,511 - 62,387 10,259 104,461 34,216 32,806 195,952 Windlectric Inc () 30.00 310,751 11,036 - 207,404 38,126 24,008 10,442 152 41,911 Myah Bahr Honaine, S.P.A.() 25.50 151,830 59,020 51,721 18,142 3,293 53,450 33,935 24,899 38,922 Pemcorp SAPI de CV () 30.00 127,892 117,083 146,931 101,439 2,925 40,166 6,561 (6,522 ) 15,358 Pectonex, R.F. Proprietary Limited 50.00 2,356 - - - 1 - (186 ) (186 ) 1,495 Evacuación Valdecaballeros, S.L. 57.16 17,185 976 - 15,022 156 938 (63 ) (93 ) 923 Evacuación Villanueva del Rey, S.L 40.02 2,637 63 - 1,601 172 - 59 - - ABY Infraestructuras S.L.U. 20.00 238 46 - - 5 - (54 ) (54 ) 21 As of December 31, 2021 294,581 Company % Shares Non- current assets Current assets Project Debt Other non- current liabilities Other current liabilities Revenue Operating profit/loss Net profit/ (loss) Investment under the equity method Windlectric Inc () 30.00 316,251 7,299 - 216,765 31,403 23,663 10,451 (493 ) 59,116 Myah Bahr Honaine, S.P.A.(*) 25.50 165,688 57,808 63,356 17,617 3,636 50,739 30,519 12,402 39,204 Pemcorp SAPI de CV () 30.00 127,429 121,468 154,937 104,893 3,190 28,832 3,068 (6,237 ) 15,514 Pectonex, R.F. Proprietary Limited 50.00 2,743 - - - 1 - (168 ) (168 ) 1,587 Evacuación Valdecaballeros, S.L. 57.16 19,531 1,130 - 16,721 646 853 (167 ) (194 ) 976 Evacuación Villanueva del Rey, S.L 40.02 3,201 134 - 1,861 257 - 52 - - Ca Ku A1, S.A.P.I de CV (PTS) 5.00 468,131 156,528 - 604,986 25,773 80,240 17,415 1,615 30 ABY Infraestructuras S.L.U. 20.00 135 84 - - 63 - (53 ) (53 ) 17 Other renewable energy joint ventures (***) 50.00 323 210 - - 19 (66 ) (66 ) 169 As of December 31, 2020 116,614

Financial instruments by cate_2

Financial instruments by category (Tables)	12 Months Ended
Financial instruments by category (Tables)	Dec. 31, 2021
Financial instruments by category [Abstract]
Financial assets	Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2021 Derivative assets 9 - - 12,960 12,960 Investment in Ten West Link - 14,459 - 14,459 Financial assets under IFRIC 12 (short-term portion) 188,912 - - 188,912 Trade and other receivables 11 307,143 - - 307,143 Cash and cash equivalents 12 622,689 - - 622,689 Other financial investments 87,657 - - 87,657 Total financial assets 1,206,401 14,459 12,960 1,233,820 Notes Amortized cost Fair value through other comprehensive income Fair value through profit or loss Balance as of December 31, 2020 Derivative assets 9 - - 1,559 1,559 Investment in Ten West Link - 12,896 - 12,896 Investment in Rioglass - - 2,687 2,687 Financial assets under IFRIC 12 (short-term portion) 178,198 - - 178,198 Trade and other receivables 11 331,735 - - 331,735 Cash and cash equivalents 12 868,501 - - 868,501 Other financial investments 94,497 - - 94,497 Total financial assets 1,472,931 12,896 4,246 1,490,073
Financial liabilities	Corporate debt 14 1,023,071 - - 1,023,071 Project debt 15 5,036,193 - - 5,036,193 Trade and other current liabilities 17 113,907 - - 113,907 Derivative liabilities 9 - - 223,453 223,453 Total financial liabilities 6,173,171 - 223,453 6,396,624 Corporate debt 14 993,725 - - 993,725 Project debt 15 5,237,614 - - 5,237,614 Related parties – non-current 10 6,810 - - 6,810 Trade and other current liabilities 17 92,557 - - 92,557 Derivative liabilities 9 - - 328,184 328,184 Total financial liabilities 6,330,707 - 328,184 6,658,891

Derivative financial instrume_2

Derivative financial instruments (Tables)	12 Months Ended
Derivative financial instruments (Tables)	Dec. 31, 2021
Derivative financial instruments [Abstract]
Fair value amount of derivative financial instruments	The breakdowns of the fair value amount of the derivative financial instruments as of December 31, 2021 and 2020 are as follows: Balance as of December 31, 2021 Balance as of December 31, 2020 Assets Liabilities Assets Liabilities Interest rate cash flow hedge 9,550 206,763 898 302,302 Foreign exchange derivatives instruments 3,410 - 661 - Notes conversion option (Note 14) - 16,690 - 25,882 Total 12,960 223,453 1,559 328,184
Maturities of notional and fair value amounts of interest rate derivatives designated as cash flow hedges	The table below shows a breakdown of the maturities of notional amounts of interest rate cash flow hedge derivatives as of December 31, 2021 and 2020. Notionals Balance as of December 31, 2021 Balance as of December 31, 2020 Assets Liabilities Assets Liabilities Up to 1 year 71,386 106,191 61,364 120,874 Between 1 and 2 years 304,930 240,197 296,828 249,785 Between 2 and 3 years 262,973 271,350 257,548 276,111 Subsequent years 217,989 860,777 292,011 852,696 Total 857,278 1,478,515 907,752 1,499,466 The table below shows a breakdown of the maturity of the fair values of interest rate cash flow hedge derivatives as of December 31, 2021 and 2020: Fair value Balance as of December 31, 2021 Balance as of December 31, 2020 Assets Liabilities Assets Liabilities Up to 1 year 678 (15,039 ) 59 (21,042 ) Between 1 and 2 years 1,810 (33,670 ) 255 (48,276 ) Between 2 and 3 years 2,268 (39,834 ) 305 (55,220 ) Subsequent years 4,794 (118,220 ) 280 (177,764 ) Total 9,550 (206,763 ) 898 (302,302 )

Related parties (Tables)

Related parties (Tables)	12 Months Ended
Related parties (Tables)	Dec. 31, 2021
Related parties [Abstract]
Related party receivables and payables	Details of balances with related parties as of December 31, 2021 and 2020 are as follows: Balance as of December 31, 2021 2020 Credit receivables (current) 19,387 23,067 Credit receivables (non-current) 15,768 10,082 Total receivables from related parties 35,155 33,149 Credit payables (current) 9,494 18,477 Credit payables (non-current) 5 6,810 Total payables to related parties 9,499 25,287
Related party transactions	The transactions carried out by entities included in these Consolidated Financial Statements with related parties not included in the consolidation perimeter of Atlantica, for the years ended December 31, 2021, 2020 and 2019 have been as follows: For the year ended December 31, 2021 2020 2019 Financial income 2,069 2,017 978 Financial expense (97 ) (155 ) (195 )

Trade and other receivables (Ta

Trade and other receivables (Tables)	12 Months Ended
Trade and other receivables (Tables)	Dec. 31, 2021
Trade and other receivables [Abstract]
Trade and other receivables	Trade and other receivable as of December 31, 2021 and 2020, consist of the following: Balance as of December 31, 2021 2020 Trade receivables 227,343 258,087 Tax receivables 59,350 50,663 Prepayments 9,342 12,074 Other accounts receivable 11,108 10,911 Total 307,143 331,735
Trade receivables in foreign currency	Trade receivables in foreign currency as of December 31, 2021 and 2020, are as follows: Balance as of December 31, 2021 2020 Euro 65,854 105,826 South African Rand 24,513 24,121 Other 13,330 6,929 Total 103,697 136,876

Cash and cash equivalents (Tabl

Cash and cash equivalents (Tables)	12 Months Ended
Cash and cash equivalents (Tables)	Dec. 31, 2021
Cash and cash equivalents [Abstract]
Cash and cash equivalents	The following table shows the detail of Cash and cash equivalents as of December 31, 2021 and 2020: Balance as of December 31, 2021 2020 Cash at bank and on hand - non restricted 368,381 588,690 Cash at bank and on hand - restricted 254,308 279,811 Total 622,689 868,501 The following breakdown shows the main currencies in which cash and cash equivalent balances are denominated: Balance as of December 31, Currency 2021 2020 U.S. dollar 318,071 575,567 Euro 230,136 196,431 South African Rand 38,268 40,561 Mexican Peso 4,926 23,570 Algerian Dinar 21,156 21,114 Others 10,132 11,258 Total 622,689 868,501

Corporate debt (Tables)

Corporate debt (Tables)	12 Months Ended
Corporate debt (Tables)	Dec. 31, 2021
Corporate debt [Abstract]
Corporate debt	The breakdown of the corporate debt as of December 31, 2021 and 2020 is as follows: Balance as of December 31, 2021 2020 Non-current 995,190 970,077 Current 27,881 23,648 Total Corporate debt 1,023,071 993,725
Repayment schedule for corporate debt	The repayment schedule for the corporate debt as of December 31, 2021 is as follows: 2022 2023 2024 2025 2026 Subsequent years Total 2017 Credit Facility 5 8,199 - - - - 8,204 Commercial Paper 24,422 - - - - - 24,422 2020 Green Private Placement 359 - - - 327,081 - 327,440 Note Issuance Facility 2020 - - - - - 155,814 155,814 Green Exchangeable Notes 2,121 - - 104,289 - - 106,410 Bank Loan 11 1,895 1,895 1,862 - - 5,663 Green Senior Note 963 - - - - 394,155 395,118 Total 27,881 10,094 1,895 106,151 327,081 549,969 1,023,071 The repayment schedule for the corporate debt as of December 31, 2020 is as follows: 2021 2022 2023 2024 2025 Subsequent years Total 2017 Credit Facility 41 - - - - - 41 Notes Issuance Facility 2019 - - - - 343,999 - 343,999 Commercial Paper 21,224 - - - - - 21,224 2020 Green Private Placement 289 - - - - 351,026 351,315 Note Issuance Facility 2020 - - - - - 166,846 166,846 Green Exchangeable Notes 2,083 - - - 102,144 - 104,227 Bank Loan 11 - 2,036 2,036 1,990 - 6,073 Total 23,648 - 2,036 2,036 448,133 517,872 993,725
Movement in corporate debt	The following table details the movement in corporate debt for the years 2021 and 2020, split between cash and non-cash items: Corporate Debt 2021 2020 Initial balance 993,725 723,791 Cash changes 14,754 171,182 Non-cash changes 14,592 98,752 Final balance 1,023,071 993,725

Project debt (Tables)

Project debt (Tables)	12 Months Ended
Project debt (Tables)	Dec. 31, 2021
Project debt [Abstract]
Project debt	The variations in 2021 of project debt has been the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2020 4,925,268 312,346 5,237,614 Increases 54,908 256,581 311,489 Decreases (85,259 ) (564,603 ) (649,862 ) Business combinations (Note 5) 288,352 38,781 327,133 Currency translation differences (140,502 ) (49,679 ) (190,181 ) Reclassifications (655,093 ) 655,093 - Balance as of December 31, 2021 4,387,674 648,519 5,036,193 The variations in 2020 of project debt were the following: Project debt - long term Project debt - short term Total Balance as of December 31, 2019 4,069,909 782,439 4,852,348 Increases 613,604 268,339 881,943 Decreases (272,548 ) (552,770 ) (825,318 ) Business combinations (Note 5) 149,585 8,680 158,265 Currency translation differences 150,506 19,869 170,375 Reclassifications 214,211 (214,211 ) - Balance as of December 31, 2020 4,925,268 312,346 5,237,614
Repayment schedule for project debt	The repayment schedule for project debt in accordance with the financing arrangements and assuming there will be no acceleration at the Kaxu debt as of December 31, 2021, is as follows and is consistent with the projected cash flows of the related projects: 2022 2023 2024 2025 2026 Subsequent years Total Interest payment Nominal repayment 18,017 317,388 355,956 369,528 498,712 411,514 3,065,078 5,036,193 The repayment schedule for project debt in accordance with the financing arrangements as of December 31, 2020, is as follows and is consistent with the projected cash flows of the related projects: 2021 2022 2023 2024 2025 Subsequent years Total Interest payment Nominal repayment 19,287 293,059 328,364 355,806 371,548 508,843 3,360,707 5,237,614
Movement in project debt	The following table details the movement in project debt for the years 2021 and 2020, split between cash and non-cash items: Project Debt 2021 2020 Initial balance 5,237,614 4,852,348 Cash changes (636,831 ) (254,495 ) Non-cash changes 435,410 639,761 Final balance 5,036,193 5,237,614
Foreign currency-denominated project debt	The equivalent in U.S. dollars of the foreign currency-denominated debts held by the Company is as follows: Balance as of December 31, Currency 2021 2020 Euro 1,942,903 2,240,811 South African Rand 314,471 355,414 Algerian Dinar 97,877 115,606 Total 2,355,251 2,711,830

Grants and other liabilities (T

Grants and other liabilities (Tables)	12 Months Ended
Grants and other liabilities (Tables)	Dec. 31, 2021
Grants and other liabilities [Abstract]
Grants and other non-current liabilities	Grants and other liabilities as of December 31, 2021 and December 31, 2020 are as follows: Balance as of December 31, 2021 2020 Grants 970,557 1,028,765 Other liabilities 293,187 201,002 Grant and other non-current liabilities 1,263,744 1,229,767

Trade payables and other curr_2

Trade payables and other current liabilities (Tables)	12 Months Ended
Trade payables and other current liabilities (Tables)	Dec. 31, 2021
Trade payables and other current liabilities [Abstract]
Trade payable and other current liabilities	Trade payables and other current liabilities as of December 31, 2021 and 2020 are as follows: Balance as of December 31, Item 2021 2020 Trade accounts payables 79,052 51,421 Down payments from clients 542 416 Other accounts payables 34,313 40,720 Total 113,907 92,557

Income Tax (Tables)

Income Tax (Tables)	12 Months Ended
Income Tax (Tables)	Dec. 31, 2021
Income Tax [Abstract]
Analysis of deferred tax assets and liabilities	As of December 31, 2021, and 2020, the analysis of deferred tax assets and deferred tax liabilities is as follows: Deferred tax assets Balance as of December 31, from 2021 2020 Net operating loss carryforwards (“NOL´s”) 323,115 497,184 Temporary tax non-deductible expenses 128,186 115,063 Derivatives financial instruments 55,217 83,847 Other 4,225 3,021 Total deferred tax assets 510,743 699,115 Deferred tax liabilities Balance as of December 31, from 2021 2020 Accelerated tax amortization 465,219 652,600 Other difference between tax and book value of assets 180,218 154,969 Other 1,897 179 Total deferred tax liabilities 647,334 807,748
Consolidated balance sheets classifications	After offsetting deferred tax assets and deferred tax liabilities, where applicable Consolidated balance sheets classifications Balance as of December 31, 2021 2020 Deferred tax assets 172,268 152,290 Deferred tax liabilities 308,859 260,923 Net deferred tax liabilities 136,591 108,633
Movements in deferred tax assets and liabilities	The movements in deferred tax assets and liabilities during the years ended December 31, 2021 and 2020 were as follows: Deferred tax assets Amount As of December 31, 2019 147,966 Increase/(decrease) through the consolidated income statement 6,003 Increase/(decrease) through other consolidated comprehensive income (equity) (8,698) Currency translation differences and other 7,019 As of December 31, 2020 152,290 Increase/(decrease) through the consolidated income statement 46,855 Increase/(decrease) through other consolidated comprehensive income (equity) (23,712 ) Business combinations (Note 5) 4,410 Currency translation differences and other (7,575) As of December 31, 2021 172,268 Deferred tax liabilities Amount As of December 31, 2019 248,996 Increase/(decrease) through the consolidated income statement 9,675 Currency translation differences and other 2,252 As of December 31, 2020 260,923 Increase/(decrease) through the consolidated income statement 32,059 Business combinations (Note 5) 4,910 Currency translation differences and other 10,967 As of December 31, 2021 308,859
Income tax expense	Details of income tax for the years ended December 31, 2021, 2020 and 2019 are as follows: For the year ended December 31, 2021 2020 2019 Current tax (51,016 ) (21,205 ) (5,081 ) Deferred tax 14,796 (3,672 ) (25,869 ) - relating to the origination and reversal of temporary differences 14,796 (3,672 ) (25,869 ) Total income tax expense (36,220 ) (24,877 ) (30,950 )
Effective income tax rate reconciliation	The reconciliation between the theoretical income tax resulting from applying an average statutory tax rate to profit before income tax and the actual income tax expense recognized in the consolidated income statements for the years ended December 31, 2021, 2020, and 2019, is as follows: For the year ended December 31, 2021 2020 2019 Consolidated income before taxes 25,302 41,751 105,558 Average statutory tax rate 25 % 25 % 25 % Corporate income tax at average statutory tax rate (6,326 ) (10,438 ) (26,390 ) Income tax of associates, net 3,076 128 1,808 Differences in statutory tax rates (3,359 ) (94 ) (7,076 ) Unrecognized NOLs and deferred tax assets (11,232 ) (37,183 ) (14,161 ) Purchase of Liberty Interactive’s equity interest in Solana - 36,352 - Other permanent differences (4,052 ) (8,895 ) 11,220 Other non-taxable income/(expense) (14,327 ) (4,747 ) 3,649 Corporate income tax (36,220 ) (24,877 ) (30,950 )

Commitments, third-party guar_2

Commitments, third-party guarantees, contingent assets and liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments, third-party guarantees, contingent assets and liabilities [Abstract]
Contractual obligations	The following tables show the breakdown of the third-party commitments and contractual obligations as of December 31, 2021 and 2020: 2021 Total 2022 2023 and 2024 2025 and 2026 Subsequent Corporate debt (Note 14) 1,023,071 27,881 11,989 433,232 549,969 Loans with credit institutions (project debt) (Note 15) 4,010,825 289,755 624,633 801,713 2,294,724 Notes and bonds (project debt) (Note 15) 1,025,368 45,650 100,850 108,512 770,355 Purchase commitments* 1,570,831 79,261 191,171 159,297 1,141,102 Accrued interest estimate during the useful life of loans 2,029,376 267,645 497,587 427,159 836,985 2020 Total 2021 2022 and 2023 2024 and 2025 Subsequent Corporate debt (Note 14) 993,725 23,648 2,036 450,169 517,872 Loans with credit institutions (project debt) (Note 15) 4,123,856 261,800 583,259 770,507 2,508,290 Notes and bonds (project debt) (Note 15) 1,113,758 50,558 100,911 109,884 852,405 Purchase commitments* 1,709,660 93,791 160,211 172,776 1,282,881 Accrued interest estimate during the useful life of loans 2,309,597 286,724 541,652 468,060 1,013,161

Employee benefit expenses and_2

Employee benefit expenses and other operating income and expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Employee benefit expenses and other operating income and expenses [Abstract]
Employee benefit expense	The table below shows employee benefit expenses and number of employees for the years ended December 31, 2021, 2020 and 2019: For the year ended December 31, 2021 2020 2019 Employee benefit expenses 78,758 54,464 32,246 Average monthly number of employees 655 441 306
Other operating income	The table below shows the detail of Other operating income and expenses for the years ended December 31, 2021, 2020 and 2019: For the year ended December 31, Other operating income 2021 2020 2019 Grants 60,746 59,010 59,142 Insurance proceeds and other 13,925 40,515 34,632 Total 74,670 99,525 93,774
Other operating expenses	For the year ended December 31, Other operating expenses 2021 2020 2019 Raw materials and consumables used (70,690 ) (7,792 ) (9,719 ) Leases and fees (9,332 ) (2,531 ) (1,850 ) Operation and maintenance (154,007 ) (110,873 ) (116,018 ) Independent professional services (39,177 ) (40,193 ) (41,579 ) Supplies (40,790 ) (27,926 ) (25,823 ) Insurance (45,429 ) (37,638 ) (23,971 ) Levies and duties (29,949 ) (39,820 ) (34,844 ) Other expenses (24,957 ) (9,891 ) (7,971 ) Total (414,330 ) (276,666 ) (261,776 )

Financial expense, net (Tables)

Financial expense, net (Tables)	12 Months Ended
Financial expense, net (Tables)	Dec. 31, 2021
Financial expense, net [Abstract]
Financial income	The following table sets forth financial income and expenses for the years ended December 31, 2021, 2020 and 2019: For the year ended December 31, Financial income 2021 2020 2019 Interest income from loans and credits 2,066 6,651 3,665 Interest rates benefits derivatives: cash flow hedges 689 401 456 Total 2,755 7,052 4,121
Financial expenses	For the year ended December 31, Financial expenses 2021 2020 2019 Interest on loans and notes (302,558 ) (316,237 ) (348,672 ) Interest rates losses derivatives: cash flow hedges (58,712 ) (62,149 ) (59,318 ) Total (361,270 ) (378,386 ) (407,990 )
Other financial income/(expense), net	The following table sets out Other financial income/(expense), net for the years 2021, 2020 and 2019: For the year ended December 31, Other financial income/(expense), net 2021 2020 2019 Other financial income 32,321 162,290 14,152 Other financial losses (16,571 ) (121,415 ) (15,305 ) Total 15,750 40,875 (1,153 )

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
Earnings per share (Tables)	Dec. 31, 2021
Earnings per share [Abstract]
Earnings per share	Diluted earnings per share for the year 2020 was calculated considering the potential issuance of 3,347,305 shares on settlement of the Green Exchangeable Notes. Diluted earnings per share equal basic earnings per share for the year 2019. For the year ended December 31, Item 2021 2020 2019 Profit/(loss) from continuing operations attributable to Atlantica (30,080 ) 11,968 62,135 Average number of ordinary shares outstanding (thousands) - basic 111,008 101,879 101,063 Average number of ordinary shares outstanding (thousands) - diluted 114,523 103,392 101,063 Earnings per share for the year (US dollar per share) - basic (0.27 ) 0.12 0.61 Earnings per share for the year (US dollar per share) - diluted (0.26 ) 0.12 0.61

Nature of the business, Descrip

Nature of the business, Description (Details) - Algonquin [Member]	Dec. 11, 2020	Dec. 31, 2021
Nature of the business [Abstract]
Ownership interest	44.20%	43.60%
Proportion of voting rights held by non-controlling interests		41.50%

Nature of the business, Assets

Nature of the business, Assets acquired (Details) $ in Thousands

Dec. 14, 2021USD ($)MW

Nov. 25, 2021USD ($)SolarprojectMW

Aug. 06, 2021USD ($)MW

Jul. 22, 2021

May 14, 2021USD ($)MW

Apr. 07, 2021USD ($)MW

Jan. 08, 2021

Jan. 07, 2021

Jan. 06, 2021USD ($)MW

Apr. 03, 2020USD ($)MW

Jan. 29, 2019

Jun. 30, 2021MW

Dec. 31, 2021USD ($)

Sep. 30, 2021

Jul. 15, 2021USD ($)

Jun. 15, 2021USD ($)

Dec. 31, 2020USD ($)

Aug. 17, 2020USD ($)

Aug. 16, 2020USD ($)

May 31, 2020

Dec. 31, 2019USD ($)

Nature of the business [Abstract]

Investment under the equity method

$ 294,581

$ 116,614

$ 139,925

Ownership interest

49.00%

Number of acquired solar projects | Solarproject

Solana [Member]

Nature of the business [Abstract]

Ownership interest

100.00%

Renewable Energy [Member]

Nature of the business [Abstract]

Investment under the equity method

$ 240,302

$ 61,866

Befesa Agua Tenes, S.L.U. [Member]

Nature of the business [Abstract]

Percentage of interest acquired

51.00%

Ownership interest

51.00%

Liberty Interactive Corporation [Member] | Solana [Member]

Nature of the business [Abstract]

Investment under the equity method

$ 285,000

Acquisition purchase price

$ 272,000

Calgary District Energy Center [Member]

Nature of the business [Abstract]

Installed capacity | MW

Investment under the equity method

$ 22,700

La Sierpe [Member]

Nature of the business [Abstract]

Installed capacity | MW

Investment under the equity method

$ 23,500

Coso [Member]

Nature of the business [Abstract]

Installed capacity | MW

135

Investment under the equity method

$ 130,000

Period of PPA

18 years

Coso [Member] | Project Debt [Member]

Nature of the business [Abstract]

Investment under the equity method

$ 40,000

Rioglass [Member]

Nature of the business [Abstract]

Percentage of interest acquired

42.50%

85.00%

42.50%

Investment under the equity method

$ 17,100

Ownership interest

100.00%

57.50%

15.00%

Chile PV 1 [Member] | Renewable Energy [Member]

Nature of the business [Abstract]

Percentage of interest acquired

35.00%

Installed capacity | MW

Investment under the equity method

$ 4,000

Chile PV 2 [Member] | Renewable Energy [Member]

Nature of the business [Abstract]

Installed capacity | MW

Investment under the equity method

$ 5,000

Vento II [Member]

Nature of the business [Abstract]

Percentage of interest acquired

49.00%

Installed capacity | MW

596

Investment under the equity method

$ 180,700

Ownership interest

51.00%

Period of PPA

5 years

Italy Solar PV [Member]

Nature of the business [Abstract]

Installed capacity | MW

3.7

Investment under the equity method

$ 9,000

la Tolua and Tierra Linda [Member]

Nature of the business [Abstract]

Installed capacity | MW

Italy Solar PV 3 [Member]

Nature of the business [Abstract]

Installed capacity | MW

2.5

Investment under the equity method

$ 4,000

Nature of the business, Concess

Nature of the business, Concessional assets owned (Details) $ in Thousands, € in Millions		12 Months Ended
		Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Jul. 14, 2020USD ($)	Jul. 14, 2020EUR (€)	Dec. 31, 2019USD ($)
Nature of the business [Abstract]
Ownership		49.00%
Project debt		$ 5,036,193	$ 5,237,614			$ 4,852,348
ACT [Member]
Nature of the business [Abstract]
Type		Efficient natural gas & heat
Ownership		100.00%
Location		Mexico
Currency	[1]	USD
Capacity (gross)		300 MW
Counterparty credit ratings	[2]	BBB/ Ba3/BB-
COD	[3]	2013
Contract years remaining	[4]	11 years
Monterrey [Member]
Nature of the business [Abstract]
Type		Efficient natural gas &heat
Ownership		30.00%
Location		Mexico
Currency	[1]	USD
Capacity (gross)		142 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2018
Contract years remaining	[4]	17 years
ATN [Member]
Nature of the business [Abstract]
Type	[5]	Transmission line
Ownership	[5]	100.00%
Location	[5]	Peru
Currency	[1],[5]	USD
Capacity (gross)	[5]	379 miles
Counterparty credit ratings	[2],[5]	BBB+/Baa1/BBB
COD	[3],[5]	2011
Contract years remaining	[4],[5]	19 years
ATS [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		569 miles
Counterparty credit ratings	[2]	BBB+/Baa1/BBB
COD	[3]	2014
Contract years remaining	[4]	22 years
ATN 2 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		81 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2015
Contract years remaining	[4]	11 years
Quadra 1 & 2 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		49 miles/32 miles
Counterparty credit ratings	[2]	Not rated
COD	[3]	2014
Quadra 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Quadra 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Palmucho [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		6 miles
Counterparty credit ratings	[2]	BBB/ -- /A-
COD	[3]	2007
Contract years remaining	[4]	16 years
Chile TL3 [Member]
Nature of the business [Abstract]
Type		Transmission line
Ownership		100.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		50 miles
Counterparty credit ratings	[2]	A/A1/A-
COD	[3]	1993
Skikda [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[6]	34.20%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		3.5 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2009
Contract years remaining	[4]	12 years
Skikda [Member] \| Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49.00%
Skikda [Member] \| Sacyr Agua S.L. [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		16.80%
Honaine [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[7]	25.50%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		7 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2012
Contract years remaining	[4]	16 years
Honaine [Member] \| Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49.00%
Honaine [Member] \| Sacyr Agua S.L. [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		25.50%
Tenes [Member]
Nature of the business [Abstract]
Type		Water
Ownership	[8]	51.00%
Location		Algeria
Currency	[1]	USD
Capacity (gross)		7 M ft3/day
Counterparty credit ratings	[2]	Not rated
COD	[3]	2015
Contract years remaining	[4]	18 years
Tenes [Member] \| Algerian Energy Company, SPA [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		49.00%
PS10 & PS20 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		31 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2007&2009
PS10 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	10 years
PS20 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	12 years
Solana [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Arizona (USA)
Currency	[1]	USD
Capacity (gross)		280 MW
Counterparty credit ratings	[2]	BBB+/A3/BBB+
COD	[3]	2013
Contract years remaining	[4]	22 years
Mojave [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		California (USA)
Currency	[1]	USD
Capacity (gross)		280 MW
Counterparty credit ratings	[2]	BB-/ -- /BB
COD	[3]	2014
Contract years remaining	[4]	18 years
Coso [Member]
Nature of the business [Abstract]
Type		Renewable (Geothermal)
Ownership		100.00%
Location		California (USA)
Currency	[1]	USD
Capacity (gross)		135 MW
Counterparty credit ratings	[2],[9]	Investment Grade
COD	[3]	1987-1989
Contract years remaining	[4]	17 years
Elkhorn Valley [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		49.00%
Location		Oregon (USA)
Currency	[1]	USD
Capacity (gross)		101 MW
Counterparty credit ratings	[2]	BBB/A3/--
COD	[3]	2007
Contract years remaining	[4]	6 years
Prairie Star [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		49.00%
Location		Minnesota (USA)
Currency	[1]	USD
Capacity (gross)		101 MW
Counterparty credit ratings	[2]	--/A3/A-
COD	[3]	2007
Contract years remaining	[4]	6 years
Twin Groves II [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		49.00%
Location		Illinois (USA)
Currency	[1]	USD
Capacity (gross)		198 MW
Counterparty credit ratings	[2]	BBB-/Baa2/--
COD	[3]	2008
Contract years remaining	[4]	4 years
Lone Star II [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		49.00%
Location		Texas (USA)
Currency	[1]	USD
Capacity (gross)		196 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2008
Contract years remaining	[4]	1 year
Chile PV I [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[10]	35.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		55 MW
Counterparty credit ratings	[2]	N/A
COD	[3]	2016
Percentage of non-controlling interests		65.00%
Chile PV2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[10]	35.00%
Location		Chile
Currency	[1]	USD
Capacity (gross)		40 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2017
Contract years remaining	[4]	9 years
Percentage of non-controlling interests		65.00%
La Sierpe [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Colombia
Currency	[1]	COP
Capacity (gross)		20 MW
Counterparty credit ratings	[2]	Not rated
COD	[3]	2021
Contract years remaining	[4]	14 years
Palmatir [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100.00%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[11]	BBB/Baa2/BBB-
COD	[3]	2014
Contract years remaining	[4]	12 years
Cadonal [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100.00%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2],[11]	BBB/Baa2/BBB-
COD	[3]	2014
Contract years remaining	[4]	13 years
Melowind [Member]
Nature of the business [Abstract]
Type		Renewable (Wind)
Ownership		100.00%
Location		Uruguay
Currency	[1]	USD
Capacity (gross)		50 MW
Counterparty credit ratings	[2]	BBB/Baa2/BBB-
COD	[3]	2015
Contract years remaining	[4]	14 years
Mini-Hydro [Member]
Nature of the business [Abstract]
Type		Renewable (Hydraulic)
Ownership		100.00%
Location		Peru
Currency	[1]	USD
Capacity (gross)		4 MW
Counterparty credit ratings	[2]	BBB+/Baa1/BBB
COD	[3]	2012
Contract years remaining	[4]	11 years
Solaben 2 & 3 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[12]	70.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2012
Solaben 2 & 3 [Member] \| Itochu Corporation [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		30.00%
Solaben 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	16 years
Solaben 3 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	16 years
Solacor 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[13]	87.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2012
Solacor 1 & 2 [Member] \| JGC [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		13.00%
Solacor 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	15 years
Solacor 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	15 years
Helioenergy 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2011
Helioenergy 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	15 years
Helioenergy 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	15 years
Helios 1 & 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2012
Project debt				$ 371,000	€ 326
Helios 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	15 years
Helios 2 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	16 years
Solnova 1, 3 & 4 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		3x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2010
Solnova 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Solnova 3 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	13 years
Solnova 4 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	14 years
Solaben 1 & 6 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		2x50 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2013
Solaben 1 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	17 years
Solaben 6 [Member]
Nature of the business [Abstract]
Contract years remaining	[4]	17 years
Seville PV [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[14]	80.00%
Location		Spain
Currency	[1]	Euro
Capacity (gross)		1 MW
Counterparty credit ratings	[2]	A/Baa1/A-
COD	[3]	2006
Contract years remaining	[4]	14 years
Seville PV [Member] \| Idae [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		20.00%
Italy PV 1 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		1.6 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2010
Contract years remaining	[4]	9 years
Italy PV 2 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		2.1 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2011
Contract years remaining	[4]	9 years
Italy PV 3 [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership		100.00%
Location		Italy
Currency	[1]	Euro
Capacity (gross)		2.5 MW
Counterparty credit ratings	[2]	BBB/Baa3/BBB
COD	[3]	2012
Contract years remaining	[4]	10 years
Kaxu [Member]
Nature of the business [Abstract]
Type		Renewable (Solar)
Ownership	[15]	51.00%
Location		South Africa
Currency	[1]	Rand
Capacity (gross)		100 MW
Counterparty credit ratings	[2],[16]	BB-/Ba2/BB-
COD	[3]	2015
Contract years remaining	[4]	13 years
Project debt		$ 315,000
Kaxu [Member] \| IDC [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		29.00%
Kaxu [Member] \| Kaxu Community Trust [Member]
Nature of the business [Abstract]
Percentage of non-controlling interests		20.00%
Calgary [Member]
Nature of the business [Abstract]
Type		Efficient natural gas &heat
Ownership		100.00%
Location		Canada
Currency	[1]	CAD
Capacity (gross)		55 MWt
Counterparty credit ratings	[2],[17]	~41% A+ or higher
COD	[3]	2010
Contract years remaining	[4]	19 years

[1]	Certain contracts denominated in U.S. dollars are payable in local currency.
[2]	Reflects the counterparty’s credit ratings issued by Standard & Poor’s Ratings Services, or S&P, Moody’s Investors Service Inc., or Moody’s, and Fitch Ratings Ltd, or Fitch.
[3]	Commercial Operation Date.
[4]	As of December 31, 2021.
[5]	Including ATN Expansion 1 & 2.
[6]	Algerian Energy Company, SPA owns 49% of Skikda and Sacyr Agua, S.L. owns the remaining 16.8%.
[7]	Algerian Energy Company, SPA owns 49% of Honaine and Sacyr Agua, S.L. owns the remaining 25.5%.
[8]	Algerian Energy Company, SPA owns 49% of Tenes.
[9]	Refers to the credit rating of two Community Choice Aggregators: Silicon Valley Clean Energy and Monterrey Bar Community Power, both with A Rating from S&P and Southern California Public Power Authority. The third off-taker is not rated.
[10]	65% of the shares in Chile PV 1 and Chile PV 2 are indirectly held by financial partners through the renewable energy platform of the Company in Chile.
[11]	Refers to the credit rating of Uruguay, as UTE (Administración Nacional de Usinas y Transmisoras Eléctricas) is unrated.
[12]	Itochu Corporation holds 30% of the shares in each of Solaben 2 and Solaben 3.
[13]	JGC holds 13% of the shares in each of Solacor 1 and Solacor 2.
[14]	Instituto para la Diversificación y Ahorro de la Energía (“Idae”) holds 20% of the shares in Seville PV.
[15]	Kaxu is owned by the Company (51%), Industrial Development Corporation of South Africa (29%) and Kaxu Community Trust (20%).
[16]	Refers to the credit rating of the Republic of South Africa. The off-taker is Eskom, which is a state-owned utility company in South Africa.
[17]	Refers to the credit rating of a diversified mix of 22 high credit quality clients (~41% A+ rating or higher, the rest is unrated).

Significant accounting polici_4

Significant accounting policies, Effect of IBOR Reform (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial assets [Abstract]
Assets	$ 1,233,820	$ 1,490,073
Financial liabilities [Abstract]
Liabilities	6,396,624	$ 6,658,891
LIBOR [Member]
Financial assets [Abstract]
Assets	0
Financial liabilities [Abstract]
Liabilities	1,131,072
Project Debt [Member] \| LIBOR [Member]
Financial liabilities [Abstract]
Liabilities	1,068,501
Non-derivative Items [Member] \| LIBOR [Member]
Financial liabilities [Abstract]
Liabilities	1,068,501
Derivatives [Member] \| LIBOR [Member]
Financial liabilities [Abstract]
Liabilities	62,571
Non-derivative Items [Member] \| LIBOR [Member]
Financial assets [Abstract]
Assets	0
Derivatives [Member] \| LIBOR [Member]
Financial assets [Abstract]
Assets	$ 0

Significant accounting polici_5

Significant accounting policies, Effect of LIBOR Reform, Financial Instruments Not Yet Transistioned to RFRs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Hedging instruments [Abstract]
Assets	$ 1,233,820	$ 1,490,073
Liabilities	6,396,624	6,658,891
Derivatives [Member]
Hedging instruments [Abstract]
Assets	12,960	$ 1,559
Cash Flow Hedge [Member]
Hedging instruments [Abstract]
Nominal repayment	939,670
Assets	0
Liabilities	62,571
Changes in fair value used for calculating hedge ineffectiveness	30,013
Cash Flow Hedge [Member] \| Derivatives [Member]
Hedging instruments [Abstract]
Changes in fair value used for calculating hedge ineffectiveness	30,013
Cash Flow Hedge [Member] \| Interest Rate Swap [Member]
Hedging instruments [Abstract]
Nominal repayment	939,670
Assets	0
Liabilities	$ 62,571

Significant accounting polici_6

Significant accounting policies, Contracted Concessional Assets (Details)	12 Months Ended
	Dec. 31, 2021
Spain [Member]
Revenue Recognition [Abstract]
Percentage of receiving a remuneration based on reasonable rate of return on assets	7.09%
Other [Member]
Revenue Recognition [Abstract]
Percentage of receiving a remuneration based on reasonable rate of return on assets	7.398%

Significant accounting polici_7

Significant accounting policies, Loans and Borrowings (Details)	12 Months Ended
	Dec. 31, 2021
Significant accounting policies [Abstract]
Percentage to evaluates redemption of old debt and issuance of new debt	10.00%
Net present value of modified cash flows including any fees paid net of any fees received	10.00%

Financial risk management (Deta

Financial risk management (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Rate Risk [Member]
Financial risk management [Abstract]
Forecasted increase in benchmark interest rate	0.25%
Forecasted loss on cash flow hedges due to increase in benchmark interest rate	$ (2,495)	$ (2,897)	$ (2,745)
Forecasted increase in hedging reserves due to increase in benchmark interest rate	$ 22,440	$ 22,130	$ 27,570
Interest Rate Risk [Member] \| Euros [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	100.00%
Maturity date	2038
Interest Rate Risk [Member] \| Euros [Member] \| Bottom of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	75.00%
Interest rate	0.00%
Interest Rate Risk [Member] \| Euros [Member] \| Top of Range [Member]
Financial risk management [Abstract]
Maturity date	2038
Interest rate	4.87%
Interest Rate Risk [Member] \| U.S. Dollars [Member]
Financial risk management [Abstract]
Maturity date	2038
Interest Rate Risk [Member] \| U.S. Dollars [Member] \| Bottom of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	75.00%
Interest rate	0.86%
Interest Rate Risk [Member] \| U.S. Dollars [Member] \| Top of Range [Member]
Financial risk management [Abstract]
Percentage of notional amount of debt hedged	100.00%
Maturity date	2038
Interest rate	5.89%
Currency Risk [Member]
Financial risk management [Abstract]
Net Euro exposure percentage for next fiscal year	100.00%
Net Euro exposure percentage for following fiscal period	75.00%

Financial information by segm_3

Financial information by segment, Revenues and Adjusted EBITDA (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)Customer	Dec. 31, 2020USD ($)Customer	Dec. 31, 2019USD ($)
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues \| Customer		4
Revenue	$ 1,211,749	$ 1,013,260	$ 1,011,452
Adjusted EBITDA	$ 824,388	$ 796,123	821,555
Renewable Energy [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues \| Customer	1	3
Revenue	$ 928,525	$ 753,089	761,090
Adjusted EBITDA	602,583	$ 576,285	604,080
Efficient Natural Gas & Heat [Member]
Financial information by segment [Abstract]
Number of customers representing more than 10% of total revenues \| Customer		1
Revenue	123,692	$ 111,030	122,281
Adjusted EBITDA	99,935	101,006	109,200
Transmission Lines [Member]
Financial information by segment [Abstract]
Revenue	105,680	106,042	103,453
Adjusted EBITDA	83,635	87,272	85,657
Water [Member]
Financial information by segment [Abstract]
Revenue	53,852	43,099	24,629
Adjusted EBITDA	38,235	31,560	22,618
North America [Member]
Financial information by segment [Abstract]
Revenue	395,775	330,921	332,965
Adjusted EBITDA	311,803	279,365	307,242
South America [Member]
Financial information by segment [Abstract]
Revenue	154,985	151,460	142,207
Adjusted EBITDA	119,547	120,023	115,346
EMEA [Member]
Financial information by segment [Abstract]
Revenue	660,989	530,879	536,280
Adjusted EBITDA	$ 393,038	$ 396,735	$ 398,967

Financial information by segm_4

Financial information by segment, Reconciliation of segment Adjusted EBITDA (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial information by segment [Abstract]
Profit/(loss) attributable to the Company	$ (30,080)	$ 11,968	$ 62,135
Profit attributable to non-controlling interests	19,162	4,906	12,473
Income tax expense	(36,220)	(24,877)	(30,950)
Financial expense, net	(340,892)	(331,810)	(402,348)
Depreciation, amortization, and impairment charges	(439,441)	(408,604)	(310,755)
Total segment Adjusted EBITDA	824,388	796,123	821,555
Reconciling Item [Member]
Financial information by segment [Abstract]
Profit/(loss) attributable to the Company	(30,080)	11,968	62,135
Profit attributable to non-controlling interests	19,162	4,906	12,473
Income tax expense	36,220	24,877	30,950
Financial expense, net	340,892	331,810	402,348
Depreciation, amortization, and impairment charges	439,441	408,604	310,755
Depreciation and amortization, financial expense and income tax expense of unconsolidated affiliates (pro rata of Atlantica's equity ownership)	18,753	13,958	2,894
Total segment Adjusted EBITDA	$ 824,388	$ 796,123	$ 821,555

Financial information by segm_5

Financial information by segment, Assets and liabilities by geography (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets allocated [Abstract]
Contracted concessional assets	$ 8,021,568	$ 8,155,418
Investments carried under the equity method	294,581	116,614	$ 139,925
Current financial investments	207,379	200,084
Cash and cash equivalents (project companies)	622,689	868,501	562,795	$ 631,542
Total assets	9,751,930	9,938,354
Liabilities allocated [Abstract]
Long-term and short-term project debt	5,036,193	5,237,614	4,852,348
Grants and other liabilities	1,263,744	1,229,767
Long-term and short-term corporate debt	1,023,071	993,725	723,791
Total liabilities	8,003,325	8,197,473
Equity	1,748,605	1,740,881	$ 1,714,856	$ 1,756,112
Total liabilities and equity	9,751,930	9,938,354
North America [Member]
Assets allocated [Abstract]
Contracted concessional assets	3,355,669	3,073,785
Investments carried under the equity method	253,221	74,660
Current financial investments	135,224	129,264
Cash and cash equivalents (project companies)	171,744	206,344
Total assets	3,915,858	3,484,053
Liabilities allocated [Abstract]
Long-term and short-term project debt	1,792,739	1,623,284
Grants and other liabilities	1,051,679	1,078,974
Total liabilities	2,844,418	2,702,258
South America [Member]
Assets allocated [Abstract]
Contracted concessional assets	1,231,276	1,211,952
Investments carried under the equity method	0	0
Current financial investments	28,155	27,836
Cash and cash equivalents (project companies)	74,149	70,861
Total assets	1,333,580	1,310,649
Liabilities allocated [Abstract]
Long-term and short-term project debt	887,497	902,500
Grants and other liabilities	14,445	11,355
Total liabilities	901,942	913,855
EMEA [Member]
Assets allocated [Abstract]
Contracted concessional assets	3,434,623	3,869,681
Investments carried under the equity method	41,360	41,954
Current financial investments	44,000	42,984
Cash and cash equivalents (project companies)	287,655	255,530
Total assets	3,807,638	4,210,149
Liabilities allocated [Abstract]
Long-term and short-term project debt	2,355,957	2,711,830
Grants and other liabilities	197,620	139,438
Total liabilities	2,553,577	2,851,268
Allocated [Member]
Assets allocated [Abstract]
Contracted concessional assets	8,021,568	8,155,418
Investments carried under the equity method	294,581	116,614
Current financial investments	207,379	200,084
Cash and cash equivalents (project companies)	533,548	532,735
Total assets	9,057,076	9,004,851
Liabilities allocated [Abstract]
Long-term and short-term project debt	5,036,193	5,237,614
Grants and other liabilities	1,263,744	1,229,767
Total liabilities	6,299,937	6,467,381
Unallocated [Member]
Assets allocated [Abstract]
Other non-current assets	268,876	242,044
Other current assets (including cash and cash equivalents at holding company level)	425,978	691,459
Total assets	694,854	933,503
Liabilities allocated [Abstract]
Long-term and short-term corporate debt	1,023,071	993,725
Other non-current liabilities	532,312	589,107
Other current liabilities	148,005	147,260
Total liabilities	1,703,388	1,730,092
Equity	1,748,605	1,740,881
Total liabilities and equity	$ 3,451,993	$ 3,470,973

Financial information by segm_6

Financial information by segment, Assets and liabilities by business sectors (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets allocated [Abstract]
Contracted concessional assets	$ 8,021,568	$ 8,155,418
Investments carried under the equity method	294,581	116,614	$ 139,925
Current financial investments	207,379	200,084
Cash and cash equivalents (project companies)	622,689	868,501	562,795	$ 631,542
Total assets	9,751,930	9,938,354
Liabilities allocated [Abstract]
Long-term and short-term project debt	5,036,193	5,237,614	4,852,348
Grants and other liabilities	1,263,744	1,229,767
Long-term and short-term corporate debt	1,023,071	993,725	723,791
Total liabilities	8,003,325	8,197,473
Equity	1,748,605	1,740,881	$ 1,714,856	$ 1,756,112
Total liabilities and equity	9,751,930	9,938,354
Renewable Energy [Member]
Assets allocated [Abstract]
Contracted concessional assets	6,533,408	6,632,611
Investments carried under the equity method	240,302	61,866
Current financial investments	10,761	6,530
Cash and cash equivalents (project companies)	442,213	397,465
Total assets	7,226,684	7,098,472
Liabilities allocated [Abstract]
Long-term and short-term project debt	3,857,313	3,992,512
Grants and other liabilities	1,244,346	1,221,176
Total liabilities	5,101,659	5,213,688
Efficient Natural Gas & Heat [Member]
Assets allocated [Abstract]
Contracted concessional assets	517,247	502,285
Investments carried under the equity method	15,358	15,514
Current financial investments	128,461	124,872
Cash and cash equivalents (project companies)	25,392	67,955
Total assets	686,458	710,626
Liabilities allocated [Abstract]
Long-term and short-term project debt	478,724	504,293
Grants and other liabilities	11,212	108
Total liabilities	489,936	504,401
Transmission Lines [Member]
Assets allocated [Abstract]
Contracted concessional assets	805,987	842,595
Investments carried under the equity method	0	30
Current financial investments	27,813	27,796
Cash and cash equivalents (project companies)	44,574	46,045
Total assets	878,374	916,466
Liabilities allocated [Abstract]
Long-term and short-term project debt	602,278	625,203
Grants and other liabilities	5,795	6,040
Total liabilities	608,073	631,243
Water [Member]
Assets allocated [Abstract]
Contracted concessional assets	164,926	177,927
Investments carried under the equity method	38,921	39,204
Current financial investments	40,344	40,886
Cash and cash equivalents (project companies)	21,369	21,270
Total assets	265,560	279,287
Liabilities allocated [Abstract]
Long-term and short-term project debt	97,878	115,606
Grants and other liabilities	2,391	2,443
Total liabilities	100,269	118,049
Allocated [Member]
Assets allocated [Abstract]
Contracted concessional assets	8,021,568	8,155,418
Investments carried under the equity method	294,581	116,614
Current financial investments	207,379	200,084
Cash and cash equivalents (project companies)	533,548	532,735
Total assets	9,057,076	9,004,851
Liabilities allocated [Abstract]
Long-term and short-term project debt	5,036,193	5,237,614
Grants and other liabilities	1,263,744	1,229,767
Total liabilities	6,299,937	6,467,381
Unallocated [Member]
Assets allocated [Abstract]
Other non-current assets	268,876	242,044
Other current assets (including cash and cash equivalents at holding company level)	425,978	691,459
Total assets	694,854	933,503
Liabilities allocated [Abstract]
Long-term and short-term corporate debt	1,023,071	993,725
Other non-current liabilities	532,312	589,107
Other current liabilities	148,005	147,260
Total liabilities	1,703,388	1,730,092
Equity	1,748,605	1,740,881
Total liabilities and equity	$ 3,451,993	$ 3,470,973

Financial information by segm_7

Financial information by segment, Depreciation, amortization and impairment charges recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	$ (439,441)	$ (408,604)	$ (310,755)
Renewable Energy [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(432,138)	(350,785)	(286,907)
Efficient Natural Gas & Heat [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	23,910	(26,563)	3,102
Transmission Lines [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(31,286)	(30,889)	(27,490)
Water [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	73	(367)	541
North America [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(152,946)	(197,643)	(116,232)
South America [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	(57,214)	(39,191)	(47,844)
EMEA [Member]
Financial information by segment [Abstract]
Depreciation, amortization and impairment charges	$ (229,281)	$ (171,770)	$ (146,679)

Business combinations, 2021 (De

Business combinations, 2021 (Details) $ in Thousands	Dec. 14, 2021USD ($)MW	Nov. 25, 2021USD ($)MW	Aug. 06, 2021USD ($)PlantMW	Jul. 22, 2021USD ($)	May 14, 2021USD ($)MW	Apr. 07, 2021USD ($)MW	Jan. 08, 2021USD ($)	Jan. 07, 2021	Jan. 06, 2021USD ($)MW	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Sep. 30, 2021
Business combinations [Abstract]
Payment to acquire equity investment										$ 202,345	$ 0
Ownership interest										49.00%
Fair Value of Assets and Liabilities Acquisition [Abstract]
Contracted concessional assets (Note 6)										$ 542,080
Deferred tax asset (Note 18)										4,410
Other non-current assets										12,967
Cash & cash equivalents										21,012
Other current assets										61,057
Non-current Project debt (Note 15)										(288,352)
Current Project debt (Note 15)										(38,781)
Deferred tax liabilities (Note 18)										(4,910)
Other current and non-current liabilities										(87,784)
Non-controlling interests										(8,287)
Total net assets acquired at fair value										213,412
Asset acquisition - purchase price paid										(210,364)
Fair value of previously held 15% stake in Rioglass										(3,048)
Net result of business combinations										0
Revenue contributed by acquisitions										163,500
Amount of profit after tax										800
Additional revenue amount										17,700
Additional amount of profit after tax										$ 3,300
Chile PV2 [Member] \| Renewable Energy [Member]
Business combinations [Abstract]
Gross capacity \| MW									40
Payment to acquire equity investment									$ 5,000
Percentage of non-controlling interests									65.00%
Asset Acquisition [Member]
Fair Value of Assets and Liabilities Acquisition [Abstract]
Contracted concessional assets (Note 6)											172,321
Other non-current assets											356
Cash & cash equivalents											17,646
Other current assets											31,421
Non-current Project debt (Note 15)											(149,585)
Current Project debt (Note 15)											(8,680)
Other current and non-current liabilities											(15,561)
Non-controlling interests											(25,308)
Total net assets acquired at fair value											22,610
Asset acquisition - purchase price paid											(22,610)
Net result of business combinations											0
Revenue contributed by acquisitions											22,500
Amount of profit after tax											6,300
Additional revenue amount											14,700
Additional amount of profit after tax											$ 3,700
Rioglass [Member]
Business combinations [Abstract]
Percentage of interest acquired				42.50%			42.50%			85.00%		42.50%
Ownership interest				100.00%			57.50%	15.00%
Acquisition, purchase price paid				$ 4,800			$ 8,600
Additional consideration paid							$ 3,700
Coso [Member]
Business combinations [Abstract]
Gross capacity \| MW						135
Payment to acquire equity investment						$ 130,000
Fair Value of Assets and Liabilities Acquisition [Abstract]
Contracted concessional assets (Note 6)										$ 383,153
Deferred tax asset (Note 18)										0
Other non-current assets										11,024
Cash & cash equivalents										6,363
Other current assets										14,378
Non-current Project debt (Note 15)										(248,544)
Current Project debt (Note 15)										(13,415)
Deferred tax liabilities (Note 18)										0
Other current and non-current liabilities										(22,959)
Non-controlling interests										0
Total net assets acquired at fair value										130,000
Asset acquisition - purchase price paid										(130,000)
Fair value of previously held 15% stake in Rioglass										0
Net result of business combinations										0
Calgary District Heating Center [Member]
Business combinations [Abstract]
Gross capacity \| MW					55
Payment to acquire equity investment					$ 22,700
Italy PV 1 and 2 [Member]
Business combinations [Abstract]
Gross capacity \| MW			3.7
Payment to acquire equity investment			$ 9,000
Number of solar plants acquired \| Plant			2
La Sierpe [Member]
Business combinations [Abstract]
Gross capacity \| MW		20
Payment to acquire equity investment		$ 23,500
Italy PV 3 [Member]
Business combinations [Abstract]
Gross capacity \| MW	2.5
Payment to acquire equity investment	$ 4,000
Other [Member]
Fair Value of Assets and Liabilities Acquisition [Abstract]
Contracted concessional assets (Note 6)										158,927
Deferred tax asset (Note 18)										4,410
Other non-current assets										1,943
Cash & cash equivalents										14,649
Other current assets										46,679
Non-current Project debt (Note 15)										(39,808)
Current Project debt (Note 15)										(25,366)
Deferred tax liabilities (Note 18)										(4,910)
Other current and non-current liabilities										(64,825)
Non-controlling interests										(8,287)
Total net assets acquired at fair value										83,412
Asset acquisition - purchase price paid										(80,364)
Fair value of previously held 15% stake in Rioglass										(3,048)
Net result of business combinations										$ 0

Business combinations, 2020 (De

Business combinations, 2020 (Details) $ in Thousands	May 31, 2020USD ($)	Apr. 03, 2020USD ($)MW	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Business combinations [Abstract]
Payment to acquire equity investment			$ 202,345	$ 0
Fair Value of Assets and Liabilities Acquisition [Abstract]
Contracted concessional assets (Note 6)			542,080
Other non-current assets			12,967
Cash & cash equivalents			21,012
Other current assets			61,057
Non-current Project debt (Note 15)			(288,352)
Current Project debt (Note 15)			(38,781)
Other current and non-current liabilities			(87,784)
Non-controlling interests			(8,287)
Total net assets acquired at fair value			213,412
Asset acquisition - purchase price			(210,364)
Net result of business combinations			0
Revenue contributed by the acquisitions			163,500
Amount of profit after tax			800
Additional revenue amount			17,700
Additional amount of profit after tax			$ 3,300
Chile PV 1 [Member] \| Renewable Energy [Member]
Business combinations [Abstract]
Percentage of interest acquired		35.00%
Payment to acquire equity investment		$ 4,000
Gross capacity \| MW		55
Percentage of non-controlling interests		65.00%
Asset Acquisition [Member]
Fair Value of Assets and Liabilities Acquisition [Abstract]
Contracted concessional assets (Note 6)				172,321
Other non-current assets				356
Cash & cash equivalents				17,646
Other current assets				31,421
Non-current Project debt (Note 15)				(149,585)
Current Project debt (Note 15)				(8,680)
Other current and non-current liabilities				(15,561)
Non-controlling interests				(25,308)
Total net assets acquired at fair value				22,610
Asset acquisition - purchase price				(22,610)
Net result of business combinations				0
Revenue contributed by the acquisitions				22,500
Amount of profit after tax				6,300
Additional revenue amount				14,700
Additional amount of profit after tax				$ 3,700
Befesa Agua Tenes, S.L.U. [Member]
Business combinations [Abstract]
Percentage of interest acquired	51.00%
Percentage of non-controlling interests	49.00%
Total investment	$ 19,000

Contracted concessional asset_2

Contracted concessional assets (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			$ 8,155,418
Total, end of period			8,021,568	$ 8,155,418
Amount of increase in the contracted concessional assets cost			542,080
Depreciation, amortization, and impairment charges			439,441	408,604	$ 310,755
Impairment provision based on expected credit losses on contracted concessional financial assets			(25,000)	29,000
Cost [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			10,824,037	10,384,597
Additions			58,410	35,355
Subtractions			(21,630)	(72,883)
Business combinations (Note 5)			542,080	166,861
Currency translation differences			(370,278)	340,964
Reclassification and other movements			(13,484)	(30,857)
Total, end of period			11,019,135	10,824,037	10,384,597
Cost [Member] \| Financial Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			936,837	872,945
Additions			922	0
Subtractions			0	0
Business combinations (Note 5)			0	102,560
Currency translation differences			(9,519)	(8,166)
Reclassification and other movements			(53,715)	(30,502)
Total, end of period			874,525	936,837	872,945
Cost [Member] \| Financial Assets Under IFRS 16 Lessor [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			2,941	3,459
Additions			442	0
Subtractions			0	0
Business combinations (Note 5)			0	0
Currency translation differences			(540)	(163)
Reclassification and other movements			0	(355)
Total, end of period			2,843	2,941	3,459
Cost [Member] \| Intangible Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			9,467,309	9,183,011
Additions			40,383	29,213
Subtractions			(348)	(71,706)
Business combinations (Note 5)			0	0
Currency translation differences			(334,497)	326,791
Reclassification and other movements			29,692	0
Total, end of period			9,202,539	9,467,309	9,183,011
Cost [Member] \| Intangible Assets Under IFRS 16 Lessee [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			66,230	60,618
Additions			2,459	1,832
Subtractions			0	(954)
Business combinations (Note 5)			19,148	385
Currency translation differences			(5,019)	4,349
Reclassification and other movements			0	0
Total, end of period			82,818	66,230	60,618
Cost [Member] \| Property, Plant and Equipment Under IAS 16 and Other Intangible Assets Under IAS 38 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			350,720	264,564
Additions			14,204	4,310
Subtractions			(21,282)	(223)
Business combinations (Note 5)			522,932	63,916
Currency translation differences			(20,703)	18,153
Reclassification and other movements			10,539	0
Total, end of period			856,410	350,720	264,564
Depreciation, Amortization and Impairment [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			(2,668,619)	(2,223,468)
Additions			(460,361)	(384,989)
Subtractions				18,253
Reversal of impairment			24,929	18,787
Business combinations (Note 5)				(3,797)
Currency translation differences			106,484	(93,405)
Total, end of period			(2,997,567)	(2,668,619)	(2,223,468)
Depreciation, Amortization and Impairment [Member] \| Financial Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			(87,689)	(57,258)
Additions			(418)	(27,111)
Subtractions				0
Reversal of impairment			24,929	0
Business combinations (Note 5)				(3,797)
Currency translation differences			289	476
Total, end of period			(62,889)	(87,689)	(57,258)
Depreciation, Amortization and Impairment [Member] \| Financial Assets Under IFRS 16 Lessor [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			0	0
Additions			0	0
Subtractions				0
Reversal of impairment			0	0
Business combinations (Note 5)				0
Currency translation differences			0	0
Total, end of period			0	0	0
Depreciation, Amortization and Impairment [Member] \| Intangible Assets Under IFRIC 12 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			(2,442,520)	(2,055,946)
Additions			(424,181)	(338,393)
Subtractions				17,571
Reversal of impairment			0	18,787
Business combinations (Note 5)				0
Currency translation differences			97,356	(84,538)
Total, end of period			(2,769,345)	(2,442,520)	(2,055,946)
Depreciation, Amortization and Impairment [Member] \| Intangible Assets Under IFRS 16 Lessee [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			(10,060)	(6,585)
Additions			(4,759)	(3,527)
Subtractions				634
Reversal of impairment			0	0
Business combinations (Note 5)				0
Currency translation differences			714	(581)
Total, end of period			(14,105)	(10,060)	(6,585)
Depreciation, Amortization and Impairment [Member] \| Property, Plant and Equipment Under IAS 16 and Other Intangible Assets Under IAS 38 [Member]
Movements of Contracted Concessional Assets [Abstract]
Total, beginning of period			(128,350)	(103,679)
Additions			(31,003)	(15,958)
Subtractions				49
Reversal of impairment			0	0
Business combinations (Note 5)				0
Currency translation differences			8,125	(8,762)
Total, end of period			(151,228)	$ (128,350)	$ (103,679)
Solana [Member]
Movements of Contracted Concessional Assets [Abstract]
Impairment loss on contracted concessional financial assets			43,000
Recoverable amount of contracted concessional financial assets value in use			$ 943,000
Assumed percentage decrease in generation			5.00%	5.00%
Additional impairment loss with increase in discount rate			$ 69,000
Assumed basis point increase in discount rate			0.50%	0.50%
Additional impairment loss with increase in discount rate			$ 41,000
Depreciation, amortization, and impairment charges				$ 48,000
Percentage recoverable amount exceeds carrying amount				10.00%
Solana [Member] \| Bottom of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate			4.50%	3.80%
Solana [Member] \| Top of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate			5.00%	4.30%
Solar Plants in Spain [Member]
Movements of Contracted Concessional Assets [Abstract]
Assumed percentage decrease in generation				5.00%
Assumed basis point increase in discount rate				0.50%
Depreciation, amortization, and impairment charges				$ 23,000
Percentage recoverable amount exceeds carrying amount				6.00%
Regulatory period of plant				25 years
Useful life of plant	35 years	25 years
Impairment provision based on expected credit losses on contracted concessional financial assets				$ 13,000
Solar Plants in Spain [Member] \| Bottom of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate				3.30%
Solar Plants in Spain [Member] \| Top of Range [Member]
Movements of Contracted Concessional Assets [Abstract]
Discount rate				3.80%
Cadonal [Member]
Movements of Contracted Concessional Assets [Abstract]
Reversal of impairment				$ 15,600
Palmatir [Member]
Movements of Contracted Concessional Assets [Abstract]
Reversal of impairment				$ 3,100

Investments carried under the_3

Investments carried under the equity method, Movement of the investments held in associates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Investments in associates [Abstract]
Initial balance	$ 116,614	$ 139,925
Share of profit	12,304	510
Distributions	(36,877)	(23,703)
Payment to acquire equity investment	202,345	0
Others (incl. currency translation differences)	195	(118)
Final balance	$ 294,581	$ 116,614

Investments carried under the_4

Investments carried under the equity method, Breakdown of stand-alone amounts (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2021USD ($)MW	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Dividend distribution [Abstract]
Dividend distribution		$ 36,877	$ 23,703
Investments in associates [Abstract]
Non-current assets		8,585,025	8,514,076
Current assets		1,166,905	1,424,278
Project debt		5,036,193	5,237,614	$ 4,852,348
Other non-current liabilities		7,178,920	7,714,219
Other current liabilities		824,405	483,254
Revenue		1,211,749	1,013,260	1,011,452
Net profit/(loss)		(10,918)	16,874	74,608
Investment under the equity method		$ 294,581	116,614	$ 139,925
Ownership interest		49.00%
Share of profit		$ 12,304	510
Bottom of Range [Member]
Investments in associates [Abstract]
Percentage of shareholders required for approval of relevant decisions		75.00%
Amherst Island [Member]
Dividend distribution [Abstract]
Dividend distribution		$ 17,700	$ 16,100
Geida Tlemcen, S.L. [Member]
Investments in associates [Abstract]
% Shares			50.00%
Arroyo Netherlands II B.V [Member]
Investments in associates [Abstract]
% Shares		30.00%
Ownership interest		100.00%
Share of profit		$ (2,000)	$ (1,900)
2007 Vento II, LLC [Member]
Dividend distribution [Abstract]
Dividend distribution		$ 14,800
Investments in associates [Abstract]
% Shares	[1]	49.00%
Non-current assets	[1]	$ 459,037
Current assets	[1]	13,511
Project debt	[1]	0
Other non-current liabilities	[1]	62,387
Other current liabilities	[1]	10,259
Revenue	[1]	104,461
Operating profit/(loss)	[1]	34,216
Net profit/(loss)	[1]	32,806
Investment under the equity method	[1]	195,952
Share of profit		$ 8,400
Gross capacity \| MW		596
Windlectric Inc. [Member]
Investments in associates [Abstract]
% Shares	[2]	30.00%	30.00%
Non-current assets	[2]	$ 310,751	$ 316,251
Current assets	[2]	11,036	7,299
Project debt	[2]	0	0
Other non-current liabilities	[2]	207,404	216,765
Other current liabilities	[2]	38,126	31,403
Revenue	[2]	24,008	23,663
Operating profit/(loss)	[2]	10,442	10,451
Net profit/(loss)	[2]	152	(493)
Investment under the equity method	[2]	$ 41,911	59,116
Ownership interest		100.00%
Myah Bahr Honaine, S.P.A. [Member]
Dividend distribution [Abstract]
Dividend distribution		$ 4,400	$ 4,500
Investments in associates [Abstract]
% Shares	[3]	25.50%	25.50%
Non-current assets	[3]	$ 151,830	$ 165,688
Current assets	[3]	59,020	57,808
Project debt	[3]	51,721	63,356
Other non-current liabilities	[3]	18,142	17,617
Other current liabilities	[3]	3,293	3,636
Revenue	[3]	53,450	50,739
Operating profit/(loss)	[3]	33,935	30,519
Net profit/(loss)	[3]	24,899	12,402
Investment under the equity method	[3]	$ 38,922	39,204
Myah Bahr Honaine, S.P.A. [Member] \| Geida Tlemcen, S.L. [Member]
Investments in associates [Abstract]
% Shares		51.00%
Share of profit		$ 6,400	$ 3,100
Pemcorp SAPI de CV [Member]
Investments in associates [Abstract]
% Shares	[4]	30.00%	30.00%
Non-current assets	[4]	$ 127,892	$ 127,429
Current assets	[4]	117,083	121,468
Project debt	[4]	146,931	154,937
Other non-current liabilities	[4]	101,439	104,893
Other current liabilities	[4]	2,925	3,190
Revenue	[4]	40,166	28,832
Operating profit/(loss)	[4]	6,561	3,068
Net profit/(loss)	[4]	(6,522)	(6,237)
Investment under the equity method	[4]	$ 15,358	$ 15,514
Pectonex, R.F. Proprietary Limited [Member]
Investments in associates [Abstract]
% Shares		50.00%	50.00%
Non-current assets		$ 2,356	$ 2,743
Current assets		0	0
Project debt		0	0
Other non-current liabilities		0	0
Other current liabilities		1	1
Revenue		0	0
Operating profit/(loss)		(186)	(168)
Net profit/(loss)		(186)	(168)
Investment under the equity method		$ 1,495	$ 1,587
Evacuacion Valdecaballeros, S.L. [Member]
Investments in associates [Abstract]
% Shares		57.16%	57.16%
Non-current assets		$ 17,185	$ 19,531
Current assets		976	1,130
Project debt		0	0
Other non-current liabilities		15,022	16,721
Other current liabilities		156	646
Revenue		938	853
Operating profit/(loss)		(63)	(167)
Net profit/(loss)		(93)	(194)
Investment under the equity method		$ 923	$ 976
Evacuacion Villanueva del Rey, S.L [Member]
Investments in associates [Abstract]
% Shares		40.02%	40.02%
Non-current assets		$ 2,637	$ 3,201
Current assets		63	134
Project debt		0	0
Other non-current liabilities		1,601	1,861
Other current liabilities		172	257
Revenue		0	0
Operating profit/(loss)		59	52
Net profit/(loss)		0	0
Investment under the equity method		$ 0	$ 0
Ca Ku A1, S.A.P.I de CV (PTS) [Member]
Investments in associates [Abstract]
% Shares			5.00%
Non-current assets			$ 468,131
Current assets			156,528
Project debt			0
Other non-current liabilities			604,986
Other current liabilities			25,773
Revenue			80,240
Operating profit/(loss)			17,415
Net profit/(loss)			1,615
Investment under the equity method			$ 30
ABY Infraestructuras S.L.U. [Member]
Investments in associates [Abstract]
% Shares		20.00%	20.00%
Non-current assets		$ 238	$ 135
Current assets		46	84
Project debt		0	0
Other non-current liabilities		0	0
Other current liabilities		5	63
Revenue		0	0
Operating profit/(loss)		(54)	(53)
Net profit/(loss)		(54)	(53)
Investment under the equity method		$ 21	$ 17
Other renewable energy associates [Member]
Investments in associates [Abstract]
% Shares	[5]		50.00%
Non-current assets	[5]		$ 323
Current assets	[5]		210
Project debt	[5]		0
Other non-current liabilities	[5]		0
Other current liabilities	[5]		19
Operating profit/(loss)	[5]		(66)
Net profit/(loss)	[5]		(66)
Investment under the equity method	[5]		$ 169

[1]	2007 Vento II, LLC, is the holding company of a 596 MW portfolio of wind assets in the U.S., 0.49% owned by Atlantica since June 16, 2021, and accounted for under the equity method in these Consolidated Financial Statements (Note 1). Share of profit of 2007 Vento II, LLC. included in these Consolidated Financial Statements amounts to $8.4 million in 2021
[2]	Windlectric Inc., the project entity, is 100% owned by Amherst Island Partnership which is accounted for under the equity method in these Consolidated Financial Statements
[3]	Myah Bahr Honaine, S.P.A., the project entity, is 51% owned by Geida Tlemcen, S.L. which is accounted for using the equity method in these Consolidated Financial Statements. Geida Tlemcen, S.L. is 50% owned by Atlantica. Share of profit of Myah Bahr Honaine S.P.A. included in these Consolidated Financial Statements amounts to $6.4 million in 2021 and $3.1 million in 2020.
[4]	Pemcorp SAPI de CV, Monterrey´s project entity, is 100% owned by Arroyo Netherlands II B.V. which is accounted for under the equity method in these Consolidated Financial Statements. Arroyo Netherlands II B.V. is 30% owned by Atlantica. Share of profit of Pemcorp SAPI de CV included in these Consolidated Financial Statements amounts to a loss of $2.0 million in 2021 and a loss of $1.9 million in 2020.
[5]	Other renewable energy joint ventures in 2020 corresponded to investments made in the following entities: AC Renovables Sol 1 SAS Esp, PA Renovables Sol 1 SAS Esp, SJ Renovables Sun 1 SAS Esp and SJ Renovables Wind 1 SAS Esp. As of December 31, 2021, these entities have been fully consolidated as the Company has gained control over these entities under IFRS 10, Consolidated Financial Statements.

Financial instruments by cate_3

Financial instruments by category, Reconciliation to statement of financial position (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)mi	Dec. 31, 2020USD ($)
Financial Assets [Abstract]
Financial assets	$ 1,233,820	$ 1,490,073
Financial Liabilities [Abstract]
Financial liabilities	6,396,624	6,658,891
Corporate Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	1,023,071	993,725
Project Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	5,036,193	5,237,614
Related Parties - Non-current [Member]
Financial Liabilities [Abstract]
Financial liabilities		6,810
Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities	113,907	92,557
Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities	223,453	328,184
Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets	12,960	1,559
Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets	$ 14,459	12,896
Percentage of interest acquired	12.50%
Length of transmission lines \| mi	114
Investment in Rioglass [Member]
Financial Assets [Abstract]
Financial assets		$ 2,687
Percentage of interest acquired		15.12%
Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	$ 188,912	$ 178,198
Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets	307,143	331,735
Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets	622,689	868,501
Other Financial Investments [Member]
Financial Assets [Abstract]
Financial assets	87,657	94,497
Amortized Cost [Member]
Financial Liabilities [Abstract]
Financial liabilities	6,173,171	6,330,707
Amortized Cost [Member] \| Corporate Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	1,023,071	993,725
Amortized Cost [Member] \| Project Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	5,036,193	5,237,614
Amortized Cost [Member] \| Related Parties - Non-current [Member]
Financial Liabilities [Abstract]
Financial liabilities		6,810
Amortized Cost [Member] \| Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities	113,907	92,557
Amortized Cost [Member] \| Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities	0	0
Fair Value Through Profit or Loss [Member]
Financial Liabilities [Abstract]
Financial liabilities	223,453	328,184
Fair Value Through Profit or Loss [Member] \| Corporate Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	0	0
Fair Value Through Profit or Loss [Member] \| Project Debt [Member]
Financial Liabilities [Abstract]
Financial liabilities	0	0
Fair Value Through Profit or Loss [Member] \| Related Parties - Non-current [Member]
Financial Liabilities [Abstract]
Financial liabilities		0
Fair Value Through Profit or Loss [Member] \| Trade and Other Current Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities	0	0
Fair Value Through Profit or Loss [Member] \| Derivative Liabilities [Member]
Financial Liabilities [Abstract]
Financial liabilities	223,453	328,184
Amortized Cost [Member]
Financial Assets [Abstract]
Financial assets	1,206,401	1,472,931
Amortized Cost [Member] \| Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets	0	0
Amortized Cost [Member] \| Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets	0	0
Amortized Cost [Member] \| Investment in Rioglass [Member]
Financial Assets [Abstract]
Financial assets		0
Amortized Cost [Member] \| Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	188,912	178,198
Amortized Cost [Member] \| Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets	307,143	331,735
Amortized Cost [Member] \| Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets	622,689	868,501
Amortized Cost [Member] \| Other Financial Investments [Member]
Financial Assets [Abstract]
Financial assets	87,657	94,497
Fair Value Through Other Comprehensive Income [Member]
Financial Assets [Abstract]
Financial assets	14,459	12,896
Fair Value Through Other Comprehensive Income [Member] \| Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] \| Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets	14,459	12,896
Fair Value Through Other Comprehensive Income [Member] \| Investment in Rioglass [Member]
Financial Assets [Abstract]
Financial assets		0
Fair Value Through Other Comprehensive Income [Member] \| Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] \| Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] \| Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Other Comprehensive Income [Member] \| Other Financial Investments [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Profit or Loss [Member]
Financial Assets [Abstract]
Financial assets	12,960	4,246
Fair Value Through Profit or Loss [Member] \| Derivative Liabilities [Member]
Financial Assets [Abstract]
Financial assets	12,960	1,559
Fair Value Through Profit or Loss [Member] \| Investment in Ten West Link [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Profit or Loss [Member] \| Investment in Rioglass [Member]
Financial Assets [Abstract]
Financial assets		2,687
Fair Value Through Profit or Loss [Member] \| Financial Assets under IFRIC 12 (Short-term Portion) [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Profit or Loss [Member] \| Trade and Other Receivables [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Profit or Loss [Member] \| Cash and Cash Equivalents [Member]
Financial Assets [Abstract]
Financial assets	0	0
Fair Value Through Profit or Loss [Member] \| Other Financial Investments [Member]
Financial Assets [Abstract]
Financial assets	$ 0	$ 0

Derivative financial instrume_3

Derivative financial instruments, Breakdown of fair value amounts (Details) - Cash Flow Hedge [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	$ 12,960	$ 1,559
Liabilities	223,453	328,184
Interest Rate Derivatives [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	9,550	898
Liabilities	206,763	302,302
Foreign Exchange Derivative Instruments [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	3,410	661
Liabilities	0	0
Notes Conversion Option [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	0	0
Liabilities	$ 16,690	$ 25,882

Derivative financial instrume_4

Derivative financial instruments, Breakdown of maturities of notional and fair value amounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Loss on cash flow hedges	$ 58,292	$ 58,381	$ 55,765
Cap [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	857,278	907,752
Fair value	$ 9,550	$ 898
Cap [Member] \| Up to 1 Year [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	71,386	61,364
Fair value	$ 678	$ 59
Cap [Member] \| Between 1 and 2 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	304,930	296,828
Fair value	$ 1,810	$ 255
Cap [Member] \| Between 2 and 3 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	262,973	257,548
Fair value	$ 2,268	$ 305
Cap [Member] \| Subsequent Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	217,989	292,011
Fair value	$ 4,794	$ 280
Swap [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	1,478,515	1,499,466
Fair value	$ (206,763)	$ (302,302)
Swap [Member] \| Up to 1 Year [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	106,191	120,874
Fair value	$ (15,039)	$ (21,042)
Swap [Member] \| Between 1 and 2 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	240,197	249,785
Fair value	$ (33,670)	$ (48,276)
Swap [Member] \| Between 2 and 3 Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	271,350	276,111
Fair value	$ (39,834)	$ (55,220)
Swap [Member] \| Subsequent Years [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Notionals	860,777	852,696
Fair value	$ (118,220)	$ (177,764)
Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Fair value of financial liabilities	$ 223,453	328,184
Interest Rate Derivatives [Member] \| Euros [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Maturity date	2038
Percent of notional amount of debt hedged in next 12 months	100.00%
Percentage of notional amount of debt hedged in year two	75.00%
Interest Rate Derivatives [Member] \| Euros [Member] \| Bottom of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	75.00%
Average guaranteed interest rates	0.00%
Interest Rate Derivatives [Member] \| Euros [Member] \| Top of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	100.00%
Maturity date	2038
Average guaranteed interest rates	4.87%
Interest Rate Derivatives [Member] \| U.S. Dollars [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Maturity date	2038
Interest Rate Derivatives [Member] \| U.S. Dollars [Member] \| Bottom of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	75.00%
Average guaranteed interest rates	0.86%
Interest Rate Derivatives [Member] \| U.S. Dollars [Member] \| Top of Range [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Percentage of notional amount of project debt hedged	100.00%
Maturity date	2038
Average guaranteed interest rates	5.89%
Interest Rate Derivatives [Member] \| Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Loss on cash flow hedges	$ (58,292)	(58,381)	$ (55,765)
After-tax result accumulated in equity	171,272	96,641
Fair value of financial liabilities	206,763	302,302
Notes Conversion Option [Member] \| Cash Flow Hedge [Member]
Breakdown of Maturities of Notional and Fair Value Amounts [Abstract]
Fair value of financial liabilities	$ 16,690	$ 25,882

Related parties (Details)

Related parties (Details) - USD ($) $ in Thousands	12 Months Ended
Related parties (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Transactions With Related Party [Abstract]
Financial income	$ 2,755	$ 7,052	$ 4,121
Financial expense	(361,270)	(378,386)	(407,990)
Kaxu, Solaben 2&3 and Solacor 1&2 [Member]
Details of Balances [Abstract]
Credit payables (non-current)	3,400	21,100
Algonquin [Member]
Details of Balances [Abstract]
Credit payables (current)	6,100	4,200
Amherst Island Partnership [Member]
Details of Balances [Abstract]
Compensation received in lieu of dividends	6,300	4,300
Arroyo Netherlands II B.V [Member]
Details of Balances [Abstract]
Credit receivables (current)	10,000	15,500
Related Parties [Member]
Details of Balances [Abstract]
Credit receivables (current)	19,387	23,067
Credit receivables (non-current)	15,768	10,082
Total receivables from related parties	35,155	33,149
Credit payables (current)	9,494	18,477
Credit payables (non-current)	5	6,810
Total payables to related parties	9,499	25,287
Subsidiaries [Member]
Transactions With Related Party [Abstract]
Financial income	2,069	2,017	978
Financial expense	(97)	(155)	$ (195)
Board of Directors and CEO [Member]
Non-controlling ownership interest [Abstract]
Remuneration received	4,600	3,400
Annual bonus	1,000	1,000
CEO [Member]
Non-controlling ownership interest [Abstract]
Long term award	$ 1,900	$ 800

Trade and other receivables (De

Trade and other receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Trade and other receivables [Abstract]
Trade receivables	$ 227,343	$ 258,087
Tax receivables	59,350	50,663
Prepayments	9,342	12,074
Other accounts receivable	11,108	10,911
Trade and other receivables	307,143	331,735
Euros [Member]
Trade and other receivables [Abstract]
Trade receivables	65,854	105,826
South African Rand [Member]
Trade and other receivables [Abstract]
Trade receivables	24,513	24,121
Other [Member]
Trade and other receivables [Abstract]
Trade receivables	13,330	6,929
All Foreign Currencies [Member]
Trade and other receivables [Abstract]
Trade receivables	$ 103,697	$ 136,876

Cash and cash equivalents (Deta

Cash and cash equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents [abstract]
Cash at bank and on hand - non restricted	$ 368,381	$ 588,690
Cash at bank and on hand - restricted	254,308	279,811
Cash and cash equivalents	622,689	868,501	$ 562,795	$ 631,542
U.S. Dollar [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	318,071	575,567
Euro [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	230,136	196,431
South African Rand [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	38,268	40,561
Mexican, Peso [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	4,926	23,570
Algerian Dinar [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	21,156	21,114
Others [Member]
Cash and cash equivalents [abstract]
Cash and cash equivalents	$ 10,132	$ 11,258

Equity (Details)

Equity (Details) $ / shares in Units, $ in Thousands	Dec. 15, 2021USD ($)$ / shares	Sep. 15, 2021USD ($)$ / shares	Jun. 15, 2021USD ($)$ / shares	Mar. 22, 2021USD ($)$ / shares	Jan. 07, 2021USD ($)shares	Dec. 11, 2020USD ($)$ / sharesshares	Dec. 31, 2021USD ($)Vote$ / sharesshares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)
Equity [Abstract]
Share capital							$ 11,240	$ 10,667
Shares outstanding (in shares) \| shares							112,402,973	106,670,866
Nominal value per share (in dollars per share) \| $ / shares							$ 0.10
Voting right per share \| Vote							1
Liability reclassified to equity							$ 9,000
Reduction of share premium							$ 0		$ 0
Treasury shares held (in shares) \| shares							0
Number of treasury share transactions in the period (in shares) \| shares							0
Fourth Quarter [Member]
Equity [Abstract]
Dividend declaration date							Feb. 26, 2021
Dividends paid (in dollars per share) \| $ / shares				$ 0.42
Dividend paid date							Mar. 22, 2021
Dividends paid				$ 46,500
First Quarter [Member]
Equity [Abstract]
Dividend declaration date							May 4, 2021
Dividends paid (in dollars per share) \| $ / shares			$ 0.43
Dividend paid date							Jun. 15, 2021
Dividends paid			$ 47,700
Second Quarter [Member]
Equity [Abstract]
Dividend declaration date							Jul. 30, 2021
Dividends paid (in dollars per share) \| $ / shares		$ 0.43
Dividend paid date							Sep. 15, 2021
Dividends paid		$ 47,800
Third Quarter [Member]
Equity [Abstract]
Dividend declaration date							Nov. 9, 2021
Dividends paid (in dollars per share) \| $ / shares	$ 0.435
Dividend paid date							Dec. 15, 2021
Dividends paid	$ 48,600
Long-term Incentive Plans [Member]
Equity [Abstract]
Shares issued (in shares) \| shares							141,482
Algonquin [Member]
Equity [Abstract]
Ownership interest						44.20%	43.60%
Dividends paid to non-controlling interests							$ 17,300	$ 14,700
Algerian Energy Company, SPA [Member]
Equity [Abstract]
Dividends paid to non-controlling interests							6,600	3,700
Itochu Corporation [Member]
Equity [Abstract]
Dividends paid to non-controlling interests							$ 5,700	$ 1,400
Public Offering [Member]
Equity [Abstract]
Nominal value per share (in dollars per share) \| $ / shares						$ 33
Shares issued (in shares) \| shares						5,069,200
Gross proceeds						$ 167,000
Net proceeds						$ 161,000
Over-Allotment Option [Member]
Equity [Abstract]
Shares issued (in shares) \| shares						661,200
Private Placement [Member] \| Algonquin [Member]
Equity [Abstract]
Shares issued (in shares) \| shares					4,020,860
Gross proceeds					$ 133,000
Net proceeds					$ 131,000
At the Market Program [Member]
Equity [Abstract]
Nominal value per share (in dollars per share) \| $ / shares							$ 38.43
Shares issued (in shares) \| shares							1,613,079
Net proceeds							$ 61,000
At the Market Program [Member] \| Top of range [member]
Equity [Abstract]
Amount of offering							150,000
Share Premium [Member]
Equity [Abstract]
Reduction of share premium							$ (200,000)		$ (1,000,000)

Corporate debt, Breakdown of co

Corporate debt, Breakdown of corporate debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Corporate debt [Abstract]
Non-current	$ 995,190	$ 970,077
Current	27,881	23,648
Total Corporate debt	$ 1,023,071	$ 993,725	$ 723,791

Corporate debt, Details of corp

Corporate debt, Details of corporate debt (Details) $ / shares in Units, $ in Thousands, € in Millions

1 Months Ended

12 Months Ended

Apr. 30, 2019USD ($)

Dec. 31, 2021USD ($)

Dec. 31, 2020USD ($)

Dec. 31, 2019USD ($)

Dec. 31, 2021EUR (€)

May 18, 2021USD ($)

Dec. 31, 2020EUR (€)

Dec. 04, 2020USD ($)

Dec. 04, 2020EUR (€)

Jul. 29, 2020USD ($)

Jul. 17, 2020USD ($)$ / sharesshares

Jul. 08, 2020USD ($)

Jul. 08, 2020EUR (€)

Mar. 31, 2020USD ($)

Mar. 31, 2020EUR (€)

Oct. 08, 2019USD ($)

Oct. 08, 2019EUR (€)

Apr. 30, 2019EUR (€)

May 10, 2018USD ($)

Jul. 20, 2017USD ($)

Jul. 20, 2017EUR (€)

Corporate debt [Abstract]

Corporate debt

$ 1,023,071

$ 993,725

$ 723,791

Amount drawn

429,014

678,651

352,966

2017 Credit Facility [Member]

Corporate debt [Abstract]

Corporate debt

8,204

Amount drawn

$ 8,200

Maturity date

July 1, 2023

2017 Credit Facility [Member] | Top of Range [Member]

Corporate debt [Abstract]

Principal amount

$ 11,400

€ 10

2017 Credit Facility [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.00%

2017 Credit Facility [Member] | EURIBOR [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.00%

2017 Credit Facility [Member] | LIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.00%

2017 Credit Facility [Member] | LIBOR [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.00%

Revolving Credit Facility [Member]

Corporate debt [Abstract]

Credit facility amount

$ 450,000

$ 425,000

$ 215,000

Credit facility amount available

$ 440,000

415,000

Revolving Credit Facility [Member] | Maturity December 31, 2023 [Member]

Corporate debt [Abstract]

Maturity date

December 31, 2023

Revolving Credit Facility [Member] | Maturity December 31, 2022 [Member]

Corporate debt [Abstract]

Maturity date

December 31, 2022

Letters of Credit [Member]

Corporate debt [Abstract]

Credit facility amount

$ 100,000

Amount drawn

$ 10,000

Base Rate Loans [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.60%

Base Rate Loans [Member] | Top of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1.00%

Base Rate Loans [Member] | Federal Funds Rate [Member]

Corporate debt [Abstract]

Adjustment to interest rate

0.50%

Base Rate Loans [Member] | LIBOR [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1.00%

Eurodollar Rate Loans [Member] | Bottom of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

1.60%

Eurodollar Rate Loans [Member] | Top of Range [Member]

Corporate debt [Abstract]

Adjustment to interest rate

2.25%

Note Issuance Facility 2019 [Member]

Corporate debt [Abstract]

Fixed interest rate

4.24%

Credit facility amount

$ 305,000

€ 268

Corporate debt

343,999

Maturity date

April 30, 2025

Interest capitalization period

2 years

Note Issuance Facility 2019 [Member] | EURIBOR [Member]

Corporate debt [Abstract]

Variable interest period

3 months

Adjustment to interest rate

4.50%

Commercial Paper [Member]

Corporate debt [Abstract]

Corporate debt

$ 24,422

21,224

Short term notes issued amount

$ 24,400

19,800

€ 21.5

€ 17.4

$ 57,000

€ 50

Term of short term notes

2 years

Percentage average cost of issued short term notes

0.36%

2020 Green Private Placement [Member]

Corporate debt [Abstract]

Principal amount

$ 330,000

€ 290

Corporate debt

$ 327,440

351,315

Adjustment to interest rate

1.96%

Maturity date

June 2026

Note Issuance Facility 2020 [Member]

Corporate debt [Abstract]

Fixed interest rate

5.25%

Credit facility amount

$ 159,000

€ 140

Corporate debt

$ 155,814

166,846

Maturity period

7 years

Green Exchangeable Notes Due 2025 [Member]

Corporate debt [Abstract]

Fixed interest rate

4.00%

Corporate debt

$ 106,410

104,227

Maturity date

July 15, 2025

Principal amount of notes issued

$ 15,000

$ 100,000

Exchange rate of notes (in shares) | shares

29.1070

Principal amount of notes for exchange rate

$ 1,000

Initial exchange price of notes (in dollars per share) | $ / shares

$ 34.36

Amount of transaction date of fair value fair value are accounted for through the profit and loss statement

$ 10,000

Bank Loan [Member]

Corporate debt [Abstract]

Fixed interest rate

2.50%

Corporate debt

$ 5,663

$ 6,073

$ 5,700

€ 5

Maturity date

December 4, 2025

Green Exchangeable Notes Due 2028 [Member]

Corporate debt [Abstract]

Principal amount

$ 400,000

Fixed interest rate

4.125%

Maturity date

May 15, 2028

Corporate debt, Repayment sched

Corporate debt, Repayment schedule (Details) $ in Thousands, € in Millions	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 04, 2020USD ($)	Dec. 04, 2020EUR (€)	Dec. 31, 2019USD ($)
Repayment schedule [Abstract]
Corporate debt	$ 1,023,071	$ 993,725			$ 723,791
2021 [Member]
Repayment schedule [Abstract]
Corporate debt		23,648
2022 [Member]
Repayment schedule [Abstract]
Corporate debt	27,881	0
2023 [member]
Repayment schedule [Abstract]
Corporate debt	10,094	2,036
2024 [Member]
Repayment schedule [Abstract]
Corporate debt	1,895	2,036
2025 [Member]
Repayment schedule [Abstract]
Corporate debt	106,151	448,133
2026 [Member]
Repayment schedule [Abstract]
Corporate debt	327,081
Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	549,969	517,872
2017 Credit Facility [Member]
Repayment schedule [Abstract]
Corporate debt	8,204	41
2017 Credit Facility [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		41
2017 Credit Facility [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	5	0
2017 Credit Facility [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	8,199	0
2017 Credit Facility [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
2017 Credit Facility [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
2017 Credit Facility [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0
2017 Credit Facility [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Commercial Paper [Member]
Repayment schedule [Abstract]
Corporate debt	24,422	21,224
Commercial Paper [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		21,224
Commercial Paper [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	24,422	0
Commercial Paper [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	0	0
Commercial Paper [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Commercial Paper [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Commercial Paper [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Commercial Paper [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
2020 Green Private Placement [Member]
Repayment schedule [Abstract]
Corporate debt	327,440	351,315
2020 Green Private Placement [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		289
2020 Green Private Placement [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	359	0
2020 Green Private Placement [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	0	0
2020 Green Private Placement [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
2020 Green Private Placement [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
2020 Green Private Placement [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	327,081
2020 Green Private Placement [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0	351,026
Note Issuance Facility 2020 [Member]
Repayment schedule [Abstract]
Corporate debt	155,814	166,846
Note Issuance Facility 2020 [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		0
Note Issuance Facility 2020 [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Note Issuance Facility 2020 [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	0	0
Note Issuance Facility 2020 [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Note Issuance Facility 2020 [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Note Issuance Facility 2020 [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Note Issuance Facility 2020 [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	155,814	166,846
Green Exchangeable Notes [Member]
Repayment schedule [Abstract]
Corporate debt	106,410	104,227
Green Exchangeable Notes [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		2,083
Green Exchangeable Notes [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	2,121	0
Green Exchangeable Notes [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	0	0
Green Exchangeable Notes [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Green Exchangeable Notes [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	104,289	102,144
Green Exchangeable Notes [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Green Exchangeable Notes [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Bank Loan [Member]
Repayment schedule [Abstract]
Corporate debt	5,663	6,073	$ 5,700	€ 5
Bank Loan [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		11
Bank Loan [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	11	0
Bank Loan [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	1,895	2,036
Bank Loan [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	1,895	2,036
Bank Loan [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	1,862	1,990
Bank Loan [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Bank Loan [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	0	0
Green Senior Notes [Member]
Repayment schedule [Abstract]
Corporate debt	395,118
Green Senior Notes [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt	963
Green Senior Notes [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt	0
Green Senior Notes [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Green Senior Notes [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Green Senior Notes [Member] \| 2026 [Member]
Repayment schedule [Abstract]
Corporate debt	0
Green Senior Notes [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt	$ 394,155
Note Issuance Facility 2019 [Member]
Repayment schedule [Abstract]
Corporate debt		343,999
Note Issuance Facility 2019 [Member] \| 2021 [Member]
Repayment schedule [Abstract]
Corporate debt		0
Note Issuance Facility 2019 [Member] \| 2022 [Member]
Repayment schedule [Abstract]
Corporate debt		0
Note Issuance Facility 2019 [Member] \| 2023 [member]
Repayment schedule [Abstract]
Corporate debt		0
Note Issuance Facility 2019 [Member] \| 2024 [Member]
Repayment schedule [Abstract]
Corporate debt		0
Note Issuance Facility 2019 [Member] \| 2025 [Member]
Repayment schedule [Abstract]
Corporate debt		343,999
Note Issuance Facility 2019 [Member] \| Subsequent Years [Member]
Repayment schedule [Abstract]
Corporate debt		$ 0

Corporate debt, Movement in cor

Corporate debt, Movement in corporate debt, split between cash and non-cash items (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Corporate debt [Abstract]
Initial balance	$ 993,725	$ 723,791
Cash changes	14,754	171,182
Non-cash changes	14,592	98,752
Final balance	$ 1,023,071	$ 993,725

Project debt, Variations of pro

Project debt, Variations of project debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Project debt [Abstract]
Cash held to satisfy non-recourse debt agreements	$ 254,000	$ 280,000
Total Project Debt [Abstract]
Beginning balance	5,237,614	4,852,348
Increases	311,489	881,943
Decreases	(649,862)	(825,318)
Business combinations (Note 5)	327,133	158,265
Currency translation differences	(190,181)	170,375
Reclassifications	0	0
Ending balance	5,036,193	5,237,614
Project Debt - Long-term [Member]
Total Project Debt [Abstract]
Beginning balance	4,925,268	4,069,909
Increases	54,908	613,604
Decreases	(85,259)	(272,548)
Business combinations (Note 5)	288,352	149,585
Currency translation differences	(140,502)	150,506
Reclassifications	(655,093)	214,211
Ending balance	4,387,674	4,925,268
Project Debt - Short-term [Member]
Total Project Debt [Abstract]
Beginning balance	312,346	782,439
Increases	256,581	268,339
Decreases	(564,603)	(552,770)
Business combinations (Note 5)	38,781	8,680
Currency translation differences	(49,679)	19,869
Reclassifications	655,093	(214,211)
Ending balance	$ 648,519	$ 312,346

Project debt, Increases and Dec

Project debt, Increases and Decreases (Details) $ in Thousands, € in Millions	Jul. 14, 2020USD ($)	Jul. 10, 2020USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Jul. 14, 2020EUR (€)	Apr. 08, 2020USD ($)	Apr. 08, 2020EUR (€)
Project debt [Abstract]
Increase in project debt during period				$ 327,000
Current project debt				648,519	$ 312,346
Investment under the equity method				294,581	116,614	$ 139,925
Proceeds from borrowings				14,560	603,949	5,860
Project debt				5,036,193	5,237,614	4,852,348
Other financial losses				(16,571)	(121,415)	$ (15,305)
Non-monetary financial income			$ 3,800		3,800
Green Project Finance [Member]
Project debt [Abstract]
Investment under the equity method								$ 159,000	€ 140
Kaxu [Member]
Project debt [Abstract]
Current project debt				315,000
Project debt				$ 315,000
Helioenergy 1 and 2 [Member]
Project debt [Abstract]
Proceeds from borrowings		$ 43,000
Helios 1 and 2 [Member]
Project debt [Abstract]
Proceeds from borrowings	$ 30,000
Project debt	371,000						€ 326
Outstanding project debt refinanced \| €							€ 250
Other financial losses	$ (73,000)				(73,000)
Chile PV 1 and Tenes [Member]
Project debt [Abstract]
Acquisition purchase price					$ 158,000

Project debt, Repayment schedul

Project debt, Repayment schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Repayment schedule [Abstract]
Project debt	$ 5,036,193	$ 5,237,614	$ 4,852,348
2021 [Member]
Repayment schedule [Abstract]
Interest payment		19,287
Nominal repayment		293,059
2022 [Member]
Repayment schedule [Abstract]
Interest payment	18,017
Nominal repayment	317,388
Project debt		328,364
2023 [Member]
Repayment schedule [Abstract]
Project debt	355,956	355,806
2024 [Member]
Repayment schedule [Abstract]
Project debt	369,528	371,548
2025 [Member]
Repayment schedule [Abstract]
Project debt	498,712	508,843
2026 [Member]
Repayment schedule [Abstract]
Project debt	411,514
Subsequent Years [Member]
Repayment schedule [Abstract]
Project debt	$ 3,065,078	$ 3,360,707

Project debt, Movement in proje

Project debt, Movement in project debt, split between cash and non-cash items (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Project debt [Abstract]
Beginning balance	$ 5,237,614	$ 4,852,348
Cash changes	(636,831)	(254,495)
Non-cash changes	435,410	639,761
Ending balance	$ 5,036,193	$ 5,237,614

Project debt, Movement in pro_2

Project debt, Movement in project debt and Significant foreign currency denominated debts (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Project debt [Abstract]
Project debt	$ 5,036,193	$ 5,237,614	$ 4,852,348
Euro [Member]
Project debt [Abstract]
Project debt	1,942,903	2,240,811
South African Rand [Member]
Project debt [Abstract]
Project debt	314,471	355,414
Algerian Dinar [Member]
Project debt [Abstract]
Project debt	97,877	115,606
All Foreign Currencies [Member]
Project debt [Abstract]
Project debt	$ 2,355,251	$ 2,711,830

Grants and other liabilities (D

Grants and other liabilities (Details) $ in Thousands	12 Months Ended
Grants and other liabilities (Details) $ in Thousands	Dec. 31, 2021USD ($)Type	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Grants and other liabilities [Abstract]
Grants	$ 970,557	$ 1,028,765
Other liabilities	293,187	201,002
Grant and other non-current liabilities	$ 1,263,744	1,229,767
Number of grant types \| Type	2
Income from grants	$ 60,746	59,010	$ 59,142
Finance lease liabilities	100,300	89,300
Solana and Mojave [Member]
Grants and other liabilities [Abstract]
Income from grants	58,700	58,900
Solar Plants in Spain [Member]
Grants and other liabilities [Abstract]
Provisions for high risk market prices	75,000	600
U.S. Department of Treasury [Member]
Grants and other liabilities [Abstract]
Grants	642,000	674,000
Federal Financing Bank [Member]
Grants and other liabilities [Abstract]
Grants	326,000	352,000
Liberty Interactive Corporation [Member]
Grants and other liabilities [Abstract]
Finance lease liabilities	59,000	52,000
Dismantling provision	$ 125,000	$ 88,000

Trade payables and other curr_3

Trade payables and other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Trade payables and other current liabilities [Abstract]
Trade accounts payables	$ 79,052	$ 51,421
Down payments from clients	542	416
Other accounts payables	34,313	40,720
Total	$ 113,907	$ 92,557

Income Tax, Analysis of deferre

Income Tax, Analysis of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	$ 510,743	$ 699,115
Deferred tax liabilities	647,334	807,748
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	172,268	152,290	$ 147,966
Deferred tax liabilities	308,859	260,923	$ 248,996
Net deferred tax liabilities	136,591	108,633
Net Operating Loss Carryforwards ("NOL's") [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	323,115	497,184
Deferred Tax Assets and Liabilities [Abstract]
Unrecognized net operating loss carryforwards	259,000	290,000
Temporary Tax Non-deductible Expenses [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	128,186	115,063
Temporary Tax Non-deductible Expenses [Member] \| Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	97,000	110,000
Derivatives Financial Instruments [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	55,217	83,847
Derivatives Financial Instruments [Member] \| Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	33,000	51,000
Derivatives Financial Instruments [Member] \| ACT [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax assets	14,000	22,000
Accelerated Tax Amortization [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax liabilities	465,219	652,600
Accelerated Tax Amortization [Member] \| Solar Plants in Spain [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	186,000	202,000
Accelerated Tax Amortization [Member] \| Solana and Mojave [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	184,000	361,000
Accelerated Tax Amortization [Member] \| Kaxu [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	76,000	90,000
Other Difference Between Tax and Book Value of Assets [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax liabilities	180,218	154,969
Other Difference Between Tax and Book Value of Assets [Member] \| U.S [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	28,000	2,000
Other Difference Between Tax and Book Value of Assets [Member] \| ACT [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	72,000	75,000
Other Difference Between Tax and Book Value of Assets [Member] \| Peruvian [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	34,000	32,000
Other Difference Between Tax and Book Value of Assets [Member] \| Chilean [Member]
Deferred Tax Assets and Liabilities [Abstract]
Deferred tax liabilities	27,000	29,000
Other [Member]
Net deferred tax assets and liabilities [abstract]
Deferred tax assets	4,225	3,021
Deferred tax liabilities	$ 1,897	$ 179

Income Tax, Movements in deferr

Income Tax, Movements in deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets [Abstract]
Beginning of period	$ 152,290	$ 147,966
Increase/(decrease) through the consolidated income statement	46,855	6,003
Increase/(decrease) through other consolidated comprehensive income (equity)	(23,712)	(8,698)
Business combinations (Note 5)	4,410
Currency translation differences and other	(7,575)	7,019
End of period	172,268	152,290
Deferred tax liabilities [Abstract]
Beginning of period	260,923	248,996
Increase/(decrease) through the consolidated income statement	32,059	9,675
Business combinations (Note 5)	4,910
Currency translation differences and other	10,967	2,252
End of period	$ 308,859	$ 260,923

Income Tax, Income tax benefit_

Income Tax, Income tax benefit/(expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax [Abstract]
Current tax	$ (51,016)	$ (21,205)	$ (5,081)
Deferred tax	14,796	(3,672)	(25,869)
Deferred tax expense (income) relating to origination and reversal of temporary differences	14,796	(3,672)	(25,869)
Total income tax expense	$ (36,220)	$ (24,877)	$ (30,950)

Income Tax, Effective income ta

Income Tax, Effective income tax rate reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax [Abstract]
Consolidated income before taxes	$ 25,302	$ 41,751	$ 105,558
Average statutory tax rate	25.00%	25.00%	25.00%
Corporate income tax at average statutory tax rate	$ (6,326)	$ (10,438)	$ (26,390)
Income tax of associates, net	3,076	128	1,808
Differences in statutory tax rates	(3,359)	(94)	(7,076)
Unrecognized NOLs and deferred tax assets	(11,232)	(37,183)	(14,161)
Purchase of Liberty Interactive's equity interest in Solana	0	36,352	0
Other permanent differences	(4,052)	(8,895)	11,220
Other non-taxable income/(expense)	(14,327)	(4,747)	3,649
Total income tax expense	$ (36,220)	$ (24,877)	$ (30,950)
Effective tax rate	25.00%	25.00%	25.00%

Commitments, third-party guar_3

Commitments, third-party guarantees, contingent assets and liabilities (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2021USD ($)GeneratorUtility	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Jan. 31, 2019USD ($)
Contractual Obligations [Abstract]
Corporate debt		$ 1,023,071	$ 993,725	$ 723,791
Loans with credit institutions (project debt) (Note 15)		4,010,825	4,123,856
Notes and bonds (project debt) (Note 15)		1,025,368	1,113,758
Purchase commitments	[1]	1,570,831	1,709,660
Accrued interest estimate during the useful life of loans		2,029,376	2,309,597
Lease commitments		107,600	94,600
Current lease commitments		7,300	5,300
Non-current lease commitments		100,300	89,300
Third-party Guarantees [Abstract]
Bank Bond and Surety Insurance deposited as guarantee		92,700	36,200
Issuance of guarantees previously issued by Abengoa		$ 174,200	159,800
Legal Proceedings [Abstract]
Number of utilities \| Utility		2
Ownership interest		49.00%
Bottom of Range [Member]
Legal Proceedings [Abstract]
Number of individual power generators \| Generator		230
2021 and 2022 [Member]
Contractual Obligations [Abstract]
Corporate debt		$ 27,881	23,648
Loans with credit institutions (project debt) (Note 15)		289,755	261,800
Notes and bonds (project debt) (Note 15)		45,650	50,558
Purchase commitments	[1]	79,261	93,791
Accrued interest estimate during the useful life of loans		267,645	286,724
2022/2023 and 2023/2024 [Member]
Contractual Obligations [Abstract]
Corporate debt		11,989	2,036
Loans with credit institutions (project debt) (Note 15)		624,633	583,259
Notes and bonds (project debt) (Note 15)		100,850	100,911
Purchase commitments	[1]	191,171	160,211
Accrued interest estimate during the useful life of loans		497,587	541,652
2024/2025 and 2025/2026 [Member]
Contractual Obligations [Abstract]
Corporate debt		433,232	450,169
Loans with credit institutions (project debt) (Note 15)		801,713	770,507
Notes and bonds (project debt) (Note 15)		108,512	109,884
Purchase commitments	[1]	159,297	172,776
Accrued interest estimate during the useful life of loans		427,159	468,060
Subsequent [Member]
Contractual Obligations [Abstract]
Corporate debt		549,969	517,872
Loans with credit institutions (project debt) (Note 15)		2,294,724	2,508,290
Notes and bonds (project debt) (Note 15)		770,355	852,405
Purchase commitments	[1]	1,141,102	1,282,881
Accrued interest estimate during the useful life of loans		836,985	$ 1,013,161
Abengoa [Member]
Legal Proceedings [Abstract]
Amount withdrawn from escrow					$ 2,500
Abengoa [Member] \| Mexico [Member]
Legal Proceedings [Abstract]
Estimated maximum potential exposure		35,000
Amount held in escrow		$ 2,500

[1]	Purchase commitments include lease commitments for lease arrangements accounted for under IFRS 16 for

Employee benefit expenses and_3

Employee benefit expenses and other operating income and expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee benefit expenses [Abstract]
Employee benefits expense	$ 78,758	$ 54,464	$ 32,246
Average monthly number of employees	655	441	306
Other operating income [Abstract]
Grants	$ 60,746	$ 59,010	$ 59,142
Insurance proceeds and other	13,925	40,515	34,632
Total	74,670	99,525	93,774
Other operating expenses [Abstract]
Raw materials and consumables used	(70,690)	(7,792)	(9,719)
Leases and fees	(9,332)	(2,531)	(1,850)
Operation and maintenance	(154,007)	(110,873)	(116,018)
Independent professional services	(39,177)	(40,193)	(41,579)
Supplies	(40,790)	(27,926)	(25,823)
Insurance	(45,429)	(37,638)	(23,971)
Levies and duties	(29,949)	(39,820)	(34,844)
Other expenses	(24,957)	(9,891)	(7,971)
Total	$ (414,330)	$ (276,666)	$ (261,776)

Financial expense, net (Details

Financial expense, net (Details) - USD ($) $ in Thousands	Jul. 14, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial income [Abstract]
Interest income from loans and credits				$ 2,066	$ 6,651	$ 3,665
Interest rates gains on derivatives: cash flow hedges				689	401	456
Total				2,755	7,052	4,121
Financial expenses [Abstract]
Interest on loans and notes				(302,558)	(316,237)	(348,672)
Interest rates losses on derivatives: cash flow hedges				(58,712)	(62,149)	(59,318)
Total				(361,270)	(378,386)	(407,990)
Non-monetary financial income			$ 3,800		3,800
Other financial income/(expense), net [Abstract]
Other financial income				32,321	162,290	14,152
Other financial losses				(16,571)	(121,415)	(15,305)
Total				15,750	40,875	$ (1,153)
Notes Conversion Option [Member]
Other financial income/(expense), net [Abstract]
Other financial losses					(16,000)
Kaxu [Member]
Other financial income/(expense), net [Abstract]
Income for non-monetary change to fair value of derivatives				7,600
Kaxu [Member] \| Notes Conversion Option [Member]
Other financial income/(expense), net [Abstract]
Income for non-monetary change to fair value of derivatives				$ 9,200
Solana [Member]
Other financial income/(expense), net [Abstract]
Other financial income		$ 145,000
Helios 1 & 2 [Member]
Other financial income/(expense), net [Abstract]
Other financial losses	$ (73,000)				$ (73,000)

Earnings per share (Details)

Earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings per share [Abstract]
Potential issuance of shares on settlement of Green Exchangeable Notes (in shares)	3,347,305	3,347,305
Potential issuance of subscribed shares (in shares)	725,041
Profit/(loss) from continuing operations attributable to Atlantica	$ (30,080)	$ 11,968	$ 62,135
Average number of ordinary shares outstanding - basic (in shares)	111,008,000	101,879,000	101,063,000
Weighted average number of ordinary shares outstanding - diluted (in shares)	114,523,000	103,392,000	101,063,000
Earnings per share for the year - basic (in dollars per share)	$ (0.27)	$ 0.12	$ 0.61
Earnings per share for the year - diluted (in dollars per share)	$ (0.26)	$ 0.12	$ 0.61

Other information (Details)

Other information (Details) $ / shares in Units, $ in Thousands	Feb. 25, 2022$ / shares	Jan. 17, 2022USD ($)SubstationMW	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Restricted Net Assets [Abstract]
Restricted net assets			$ 326,000
Subsequent Events [Abstract]
Investments accounted for using equity method			$ 294,581	$ 116,614	$ 139,925
Subsequent Events [Member]
Subsequent Events [Abstract]
Dividend declaration date	Feb. 25, 2022
Dividend approved (in dollars per share) \| $ / shares	$ 0.44
Dividend approved expected date to be paid	Mar. 25, 2022
Chile TL4 [Member] \| Forecast [Member]
Subsequent Events [Abstract]
Investments accounted for using equity method		$ 8,000
Chile TL4 [Member] \| Subsequent Events [Member]
Subsequent Events [Abstract]
Installed capacity \| MW		63
Number of substations \| Substation		2
Investments accounted for using equity method		$ 39,000
Contract life		50 years