IDACORP (IDA) S-3ASRAutomatic shelf registration

Exhibit 4.18

IDAHO POWER COMPANY

TO

DEUTSCHE BANK TRUST COMPANY AMERICAS

As Trustee under its Mortgage and Deed of Trust

dated as of October 1, 1937.

             Supplemental Indenture

providing among other things for Bonds of              Series

Dated as of                     , 202    

TABLE OF CONTENTS(1)

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SUPPLEMENTAL INDENTURE, dated as of the              day of                     , 202     made and entered into by and between IDAHO POWER COMPANY, a corporation of the State of Idaho (successor by merger to Idaho Power Company, a corporation of the State of Maine, hereinafter sometimes called the “Maine Company”), whose address is 1221 West Idaho Street, Boise, Idaho 83702-5627 (hereinafter sometimes called the “Company”), party of the first part, and DEUTSCHE BANK TRUST COMPANY AMERICAS, formerly known as Bankers Trust Company, a corporation of the State of New York whose post office address is 1 Columbus Circle, 17^th Floor, Mail Stup: NYC01-1710, New York, New York 10019, party of the second part (hereinafter sometimes called the “Trustee”), as Trustee under the Mortgage and Deed of Trust dated as of October 1, 1937 hereinafter referred to.

WHEREAS, the Maine Company has heretofore executed and delivered to the Trustee its Mortgage and Deed of Trust (hereinafter sometimes referred to as the “Original Indenture”), dated as of October 1, 1937, to secure the payment both of the principal of and interest and premium, if any, on all Bonds at any time issued and outstanding thereunder and to declare the terms and conditions upon which Bonds are to be issued thereunder; and

WHEREAS, the Maine Company was merged into the Company on June 30, 1989; and

WHEREAS, in order to evidence the succession of the Company to the Maine Company and the assumption by the Company of the covenants and conditions of the Maine Company in the Bonds and in the Original Indenture, as supplemented, contained, and to enable the Company to have and exercise the powers and rights of the Maine Company under the Original Indenture, as supplemented, in accordance with the terms thereof, the Company executed and delivered to the Trustee a Twenty-eighth Supplemental Indenture, dated as of June 30, 1989 (which supplemental indenture is hereinafter sometimes called the “Twenty-eighth Supplemental Indenture”); and

WHEREAS, said Twenty-eighth Supplemental Indenture was recorded in the records of the County of Elko, Nevada; the Counties of Baker, Grant, Harney, Malheur, Union and Wallowa, Oregon; the Counties of Ada, Adams, Bannock, Bear Lake, Bingham, Blaine, Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark, Elmore, Gem, Gooding, Idaho, Jefferson, Jerome, Lemhi, Lincoln, Minidoka, Oneida, Owyhee, Payette, Power, Twin Falls, Valley and Washington, Idaho; the Counties of Lincoln and Sweetwater, Wyoming; and with the Secretary of State of the States of Idaho, Montana, Oregon, Nevada and Wyoming; and

WHEREAS, pursuant to a written request of the Company under Section 103 of the Original Indenture, Stanley Burg, successor Individual Trustee (as defined in the Original Indenture) to R.G. Page under the Original Indenture, was removed as Individual Trustee under the Original Indenture, effective as of May 18, 2016 and (i) his right, title or interest in and to the trust estate and (ii) all the right, title, and powers of the Trustees (as defined in the Original Indenture) under the Original Indenture devolved upon the Trustee and its successors alone; and

WHEREAS, in accordance with the terms of the Original Indenture the Maine Company or the Company has executed and delivered to the Trustee the following supplemental indentures in addition to the Twenty-eighth Supplemental Indenture:

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each of which is supplemental to the Original Indenture (the Original Indenture and all indentures supplemental thereto together being hereinafter sometimes referred to as the “Indenture”); and

WHEREAS, the Original Indenture and said Supplemental Indentures (except said Fifteenth Supplemental Indenture) have each been recorded in the records of the County of Beaverhead, Montana; the Counties of Elko, Humboldt and Lander, Nevada; the Counties of Baker, Grant, Harney, Malheur, Union and Wallowa, Oregon; the Counties of Ada, Adams, Bannock, Bear Lake, Bingham, Blaine, Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark, Elmore, Gem, Gooding, Idaho, Jefferson, Jerome, Lake, Lemhi, Lincoln, Minidoka, Oneida, Owyhee, Payette, Power, Twin Falls, Valley and Washington, Idaho; the County of Walla Walla, Washington; the Counties of Lincoln and Sweetwater, Wyoming; and with the Secretary of State of the States of Idaho, Montana, Oregon, Nevada, Washington and Wyoming; and

WHEREAS, the Maine Company or the Company has heretofore issued Bonds, under and in accordance with the terms of the Indenture in the following series and aggregate principal amounts:

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which bonds are hereinafter sometimes called bonds of the First through                  Series; and

WHEREAS, the Company, in accordance with the provisions of the Indenture and pursuant to appropriate resolutions of its Board of Directors, has duly determined to make, execute and deliver to the Trustee this              Supplemental Indenture for the purposes herein provided, including the issuance of a              Series of Bonds under the Indenture, in the aggregate principal amount of up to                  Billion Dollars ($            ), to be designated as “First Mortgage Bonds,     % Series due             “ [“First Mortgage Bonds, Secured Medium-Term Notes, Series            ”](4) (herein sometimes called the “Bonds of              Series”); and

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WHEREAS, it is also now desired, for the purpose of more effectually carrying out the purposes of the Original Indenture, to confirm specifically the subjection to the lien thereof and of the Indenture of the certain property acquired by the Company in addition to the property specifically described in the Original Indenture and in said First, Second, Third, Fourth, Fifth, Sixth, Seventh, Ninth, Tenth, Eleventh, Twelfth, Thirteenth, Fourteenth, Sixteenth, Seventeenth, Eighteenth, Nineteenth, Twenty-first, Twenty-second, Twenty-third, Twenty-fourth, Twenty-fifth, Thirty-sixth, Thirty-seventh, Thirty-ninth, Fortieth, Forty-first, Forty-fourth, Forty-fifth, Forty-sixth, Forty-seventh, Forty-eighth and Forty-ninth (5) Supplemental Indentures; and

WHEREAS, all things necessary to make said Bonds of              Series, when duly authenticated by the Trustee and issued by the Company, valid and legally binding obligations of the Company and to make the Original Indenture, as heretofore supplemented and as supplemented hereby, a valid and legally binding instrument for the security thereof, have been performed, and the execution and delivery of this              Supplemental Indenture and the issue of said Bonds as in this              Supplemental Indenture provided have been in all respects duly authorized:

NOW, THEREFORE, THIS INDENTURE WITNESSETH:

That in consideration of the premises and of One Dollar to it duly paid by the Trustee at or before the ensealing and delivery of these presents, the receipt whereof is hereby acknowledged, and in order to secure the payment both of the principal of and interest and premium, if any, on all Bonds at any time issued and outstanding under the Indenture, according to their tenor and effect, and the performance of all the provisions of the Indenture and of said Bonds, the Company has duly executed and delivered to the Trustee this              Supplemental Indenture and has granted, bargained, sold, released, conveyed, assigned, transferred, mortgaged, pledged, set over and confirmed and by these presents does grant, bargain, sell, release, convey, assign, transfer, mortgage, pledge, set over and confirm unto Deutsche Bank Trust Company Americas, as Trustee as aforesaid, and to its successor or successors in said trust, and to it and its successors, and assigns forever, all property, whether real, personal or mixed (except any hereinafter expressly excepted), and wheresoever situated, acquired since the date of said Original Indenture by and now or hereafter owned by the Company including the following described properties, rights and interests in property (in addition to all other properties heretofore subjected to the lien of the Indenture and not heretofore released from the lien thereof)—that is to say:(6)

All other property, whether real, personal or mixed (except any hereinafter expressly excepted), and wheresoever situated, acquired since the date of said Original Indenture by and now or hereafter owned by the Company.

TOGETHER with all and singular the tenements, hereditaments and appurtenances belonging or in any wise appertaining to the aforesaid property or any part thereof, with the reversion and reversions, remainder and remainders, and (subject to the provisions of Section 57 of the Original Indenture) the tolls, rents, revenues, issues, earnings, income, product and profits thereof, and all the estate, right, title and interest and claim whatsoever, at law as well as in equity, which the Company now has or may hereafter acquire in and to the aforesaid property and franchises and every part and parcel thereof.

It is not intended herein or hereby to include in or subject to the lien of the Indenture, and the granting clauses hereof shall not be deemed to apply to, (1) any revenues, earnings, rents, issues, income or profits of the mortgaged and pledged property, or any bills, notes or accounts receivable, contracts or choses in action, except to the extent permitted by law in case a completed default specified in Section 65 of the Indenture shall have occurred and be continuing and the Trustee, or a receiver or trustee, shall have entered upon or taken possession of the mortgaged and pledged property, or (2) in any case, unless specifically subjected to the lien thereof, any bonds,

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notes, evidences of indebtedness, shares of stock, or other securities or any cash (except cash deposited with the Trustee pursuant to any provisions of the Indenture) or any goods, wares, merchandise, equipment or apparatus manufactured or acquired for the purpose of sale or resale in the usual course of business.

TO HAVE AND TO HOLD all such properties, real, personal and mixed, granted, bargained, sold, released, conveyed, assigned, transferred, mortgaged, pledged, set over or confirmed by the Company as aforesaid, or intended so to be, unto the Trustee (to the extent of its legal capacity to hold the same for the purposes hereof), and its successors, heirs and assigns forever;

IN TRUST, NEVERTHELESS, for the same purposes and upon the same terms, trusts and conditions and subject to and with the same provisions and covenants as are set forth in the Original Indenture, as amended or modified by said First, Second, Third, Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth, Eleventh, Twelfth, Thirteenth, Fourteenth, Fifteenth, Sixteenth, Seventeenth, Eighteenth, Nineteenth, Twentieth, Twenty-first, Twenty-second, Twenty-third, Twenty-fourth, Twenty-fifth, Twenty-sixth, Twenty-seventh, Twenty-eighth, Twenty-ninth, Thirtieth, Thirty-first, Thirty-second, Thirty-third, Thirty-fourth, Thirty-fifth, Thirty-sixth, Thirty-seventh, Thirty-eighth, Thirty-ninth, Fortieth, Forty-first, Forty-second, Forty-third, Forty-fourth, Forty-fifth, Forty-sixth, Forty-seventh, Forty-eighth and Forty-ninth Supplemental Indentures and this             (7) Supplemental Indenture.

And it is hereby covenanted, declared and decreed by and between the parties hereto, for the benefit of those who shall hold the Bonds and interest coupons, or any of them, issued and to be issued under the Indenture, as follows:

ARTICLE I

Description of Bonds of                      Series.

SECTION 1. The              Series of Bonds to be executed, authenticated and delivered under and secured by the Indenture shall be Bonds of                  Series, designated as “First Mortgage Bonds,     % Series due             ” of the Company. The Bonds of              Series shall be executed, authenticated and delivered in accordance with the provisions of, and shall in all respects be subject to, all of the terms, conditions and covenants of the Original Indenture, except insofar as the terms and provisions of the Original Indenture have been or are amended or modified by said First through              Supplemental Indentures or by this              Supplemental Indenture. Bonds of              Series shall mature on             , and shall be issued as registered Bonds without coupons in denominations of $1,000 and in any multiple thereof, and shall bear interest, payable on              and              of each year, at the rate of     % per annum until the principal shall have become due and payable, and, if default shall be made in the payment of said principal when due and payable, at the rate of     % per annum thereafter until the Company’s obligation with respect to payment of said principal shall have been discharged as provided in the Indenture; provided, however, that if Bonds of              Series shall have been declared due and payable prior to their stated maturity and such declaration shall have been annulled as provided in the Indenture, the principal of such Bonds shall not be deemed to have been so declared due and payable. The principal of and interest and premium, if any, on the Bonds of              Series shall be payable at the office or agency of the Company in the Borough of Manhattan, The City of New York, and, at the option of the Company, interest on each said Bond may also be payable at the office of the Company in Boise, Idaho, in such coin or currency of the United States of America as at the time of payment shall be legal tender for public and private debts. The interest on the Bonds of              Series, whether in temporary or definitive form, shall be payable without presentation of such Bonds and (subject to the provisions of this Section 1) only to or upon the written order of the registered holders thereof.

Except as provided in the next succeeding sentence of this Section 1, each Bond of              Series shall be dated the date of its authentication and interest shall be payable on the principal represented thereby from the              or             , as the case may be, next preceding the date thereof to which interest has been paid, unless the date thereof is a              or              to which interest has been paid, in which case such interest shall be payable from such date or unless such date is prior to             , in which case interest shall be payable from             . Each Bond of              Series authenticated between the

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record date for any interest payment date and such interest payment date shall be dated the date of its authentication, but interest shall be payable from such interest payment date; provided, however, that if the Company shall default in the payment of the interest due on such interest payment date, any Bond of              Series so authenticated shall bear interest from the              or             , as the case may be, next preceding the date of such Bond, to which interest has been paid.

Interest on any Bond of              Series shall be paid to the registered holder of such Bond of          Series, or, notwithstanding the cancellation thereof, the Bond of              Series in exchange or substitution for which such Bond shall have been issued, at the close of business on the applicable record date; provided, however, that if the Company shall default in the payment of the interest due on any interest payment date on the principal represented by any Bond of              Series, such defaulted interest shall be paid to the registered holder of such Bond (or any Bond or Bonds of              Series issued upon transfer or exchange thereof) on the date of payment of such defaulted interest or, at the election of the Company, to the person in whose name such Bond (or any Bond or Bonds of              Series issued upon transfer or exchange thereof) is registered on a subsequent record date established by notice given by mail by or on behalf of the Company to the holders of Bonds of              Series not less than ten (10) days preceding such subsequent record date. The term “record date” as used in this Section 1 shall mean, with respect to any semi-annual interest payment date, the close of business on              or             , as the case may be, next preceding such interest payment date or, in the case of defaulted interest, the close of business on any subsequent record date established as provided above.

The Bonds of              Series, in definitive form, shall be, at the option of the Company, fully engraved or shall be lithographed or printed on steel engraved borders or shall be partially lithographed or printed and partially engraved on steel engraved borders or shall be printed on safety paper or shall be typewritten.

(8)[SECTION 1. The              Series of Bonds to be executed, authenticated and delivered under and secured by the Indenture shall be Secured Medium-Term Notes, Series            , designated as “First Mortgage Bonds, Secured Medium-Term Notes, Series            ” of the Company. The Bonds of              Series shall be executed, authenticated and delivered in accordance with the provisions of, and shall in all respects be subject to, all of the terms, conditions and covenants of the Original Indenture, except insofar as the terms and provisions of the Original Indenture have been or are amended or modified by said First through              Supplemental Indentures or by this              Supplemental Indenture. Bonds of              Series shall be issued from time to time in an aggregate principal amount not to exceed $            , and shall be issued as registered Bonds without coupons in the denominations of $1,000 or in any multiple thereof; each Bond of              Series shall mature on such date not less than              nor more than              from date of issue, shall bear interest at such rate or rates (which may be either fixed or variable) and have such other terms and provisions not inconsistent with the Indenture as the Board of Directors or the Executive Committee of the Board of Directors, which shall constitute the Executive Committee of the Company (the “Executive Committee”), may determine in accordance with a resolution filed with the Trustee and a written order referring to this              Supplemental Indenture; the principal of and interest on each said Bond to be payable at the office or agency of the Company in the Borough of Manhattan, The City of New York and, at the option of the Company, interest on each said Bond may also be payable at the office of the Company in Boise, Idaho, in such coin or currency of the United States of America as at the time of payment is legal tender for public and private debts. Interest on Bonds of              Series which bear interest at a fixed rate shall be payable semiannually on              and              of each year, unless otherwise determined by the Board of Directors or the Executive Committee and set forth in a resolution filed with the Trustee referring to this              Supplemental Indenture and at maturity (each an interest payment date). Interest on Bonds of              Series which bear interest at a variable rate shall be payable on the dates (each an interest payment date) determined by the Board of Directors or the Executive Committee and set forth in a resolution filed with the Trustee referring to this              Supplemental Indenture.

Notwithstanding the foregoing, so long as there is no existing default in the payment of interest on the Bonds of              Series, all Bonds of              Series authenticated by the Trustee after the Record Date hereinafter specified for any interest payment date, and prior to such interest payment date (unless the date of first authentication of Bonds of such designated interest rate and maturity is after such Record Date), shall be dated the

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date of authentication, but shall bear interest from such interest payment date, and the person in whose name any Bond of              Series is registered at the close of business on any Record Date with respect to any interest payment date shall be entitled to receive the interest payable on such interest payment date, notwithstanding the cancellation of such Bond of              Series, upon any transfer or exchange thereof subsequent to the Record Date and on or prior to such interest payment date. If the date of first authentication of the Bonds of              Series of a designated interest rate and maturity is after such Record Date and prior to the corresponding interest payment date, such Bonds shall bear interest from the Original Interest Accrual Date but payment of interest shall commence on the second interest payment date succeeding the Original Interest Accrual Date. “Record Date” for Bonds of             Series which bear interest at a fixed rate shall mean              for interest payable              and              for interest payable             , for Bonds of              Series which bear interest at a fixed rate that is payable on other dates, shall mean the last day of the calendar month preceding such interest payment date if such interest payment date is the fifteenth day of a calendar month and shall mean the fifteenth day of the calendar month preceding such interest payment date if such interest payment date is the first day of a calendar month, unless, in each case, otherwise determined by the Board of Directors or the Executive Committee and set forth in a resolution filed with the Trustee referring to this              Supplemental Indenture, and for Bonds of              Series which bear interest at a variable rate, shall mean the date 15 calendar days prior to any interest payment date, unless otherwise determined by the Board of Directors or the Executive Committee and set forth in a resolution filed with the Trustee referring to this              Supplemental Indenture; provided that, interest payable on the maturity date will be payable to the person to whom the principal thereof shall be payable. “Original Interest Accrual Date” with respect to Bonds of              Series of a designated interest rate and maturity shall mean the date of first authentication of Bonds of such designated interest rate and maturity unless a written order filed with the Trustee on or before such date shall specify another date from which interest shall accrue, in which case “Original Interest Accrual Date” shall mean such other date specified in the written order for Bonds of such designated interest rate and maturity.

The Bonds of              Series, in definitive form, shall be, at the option of the Company, fully engraved or shall be lithographed or printed on steel engraved borders or shall be partially lithographed or printed and partially engraved on steel borders or shall be printed on safety paper or shall be typewritten.]

The holders of the Bonds of              Series consent that the Company may, but shall not be obligated to, fix a record date for the purpose of determining the holders of Bonds of              Series entitled to consent to any amendment, supplement or waiver. If a record date is fixed, those persons who are holders at such record date (or their duly designated proxies), and only those persons, shall be entitled to consent to such amendment, supplement or waiver or to revoke any consent previously given, whether or not such persons continue to be holders after such record date. No such consent shall be valid or effective for more than 90 days after such record date.

[Here will be inserted redemption provisions.]

SECTION 2. At the option of the registered holder, any Bonds of              Series, upon surrender thereof for cancellation at the office or agency of the Company in the Borough of Manhattan, The City of New York, together with a written instrument of transfer (if so required by the Company or by the Trustee) in form approved by the Company duly executed by the registered holder or by the registered holder’s duly authorized attorney, shall be exchangeable for a like aggregate principal amount and maturity of Bonds of              Series of other authorized denominations. Bonds of              Series may bear such legends as may be necessary to comply with any law or with any rules or regulations made pursuant thereto or with the rules or regulations of any stock exchange or to conform to usage with respect thereto.

Bonds of              Series shall be transferable at the office or agency of the Company in the Borough of Manhattan, The City of New York.

Notwithstanding the foregoing provisions of this Section 2, the Company shall not be required to make any transfers or exchanges of Bonds of              Series for a period of fifteen (15) days next preceding any mailing of notice of redemption, and the Company shall not be required to make transfers or exchanges of the principal amount of any Bonds of              Series so called or selected for redemption.

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SECTION 3. The Bonds of              Series shall be substantially of the tenor and purport recited in the Original Indenture, and the form thereof shall be as established by resolution of the Board of Directors or the Executive Committee, which resolution may provide that any provisions of such form of Bond may appear on the reverse of such form.

SECTION 4. Until Bonds of              Series in definitive form are ready for delivery, the Company may execute, and upon its request in writing, the Trustee shall authenticate and deliver, in lieu thereof, Bonds of              Series in temporary form, as provided in Section 15 of the Original Indenture.

ARTICLE II

Issue of Bonds of                      Series.

SECTION 5. The Bonds of              Series for the aggregate principal amount of up to              Billion Dollars ($            ) may be executed by the Company and delivered to the Trustee and shall be authenticated by the Trustee and delivered to or upon the order or orders of the Company, evidenced by a writing or writings signed by the Company by its President or a Vice President and its Treasurer or an Assistant Treasurer, pursuant to and upon compliance with the provisions of Article V, Article VI or Article VII of the Indenture.

ARTICLE III

Covenants.

The Company hereby covenants, warrants and agrees:

SECTION 6. That all the terms, conditions, provisos, covenants and provisions contained in the Indenture shall affect and apply to the property hereinabove described and conveyed and to the estate, rights, obligations and duties of the Company and Trustee and the beneficiaries of the trust with respect to said property, and to the Trustee and its successors as trustee of said property, in the same manner and with the same effect as if the said property had been owned by the Company at the time of the execution of the Original Indenture and had been specifically and at length described in and conveyed to the Trustee (to the extent of its legal capacity to hold the same for the purposes of the Indenture) by the Original Indenture as a part of the property therein stated to be conveyed.

SECTION 7. That it is lawfully seized and possessed of all of the mortgaged and pledged property described in the granting clauses of the Indenture, which has not heretofore been released from the lien thereof; that it had or has, at the respective times of execution and delivery of the Original Indenture, the First, Second, Third, Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth, Eleventh, Twelfth, Thirteenth, Fourteenth, Fifteenth, Sixteenth, Seventeenth, Eighteenth, Nineteenth, Twentieth, Twenty-first (as corrected by the Twenty-second), Twenty-second, Twenty-third, Twenty-fourth, Twenty-fifth, Twenty-sixth, Twenty-seventh, Twenty-eighth, Twenty-ninth, Thirtieth, Thirty-first, Thirty-second, Thirty-third, Thirty-fourth, Thirty-fifth, Thirty-sixth, Thirty-seventh, Thirty-eighth, Thirty-ninth, Fortieth, Forty-first, Forty-second, Forty-third, Forty-fourth, Forty-fifth, Forty-sixth, Forty-seventh, Forty-eighth and Forty-ninth Supplemental Indentures and this             (9) Supplemental Indenture, good, right and lawful authority to mortgage and pledge the mortgaged and pledged property described therein, as provided in and by the Indenture; and that such mortgaged and pledged property is, at the actual date of the initial issue of the Bonds of              Series, free and clear of any mortgage, lien, charge or encumbrance thereon or affecting the title thereto (other than excepted encumbrances) prior to the lien of the Indenture, except as set forth in the granting clauses of the Indenture.

SECTION 8. That it will deliver to the Trustee annually, within ninety (90) days after the close of each fiscal year, commencing with the fiscal year 202 , a certificate from the principal executive officer, principal financial officer or principal accounting officer as to his or her knowledge of the Company’s compliance with all conditions and covenants under the Indenture. For purposes of this Section 8, such compliance shall be determined without regard to any period of grace or requirement of notice provided under the Indenture.

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ARTICLE IV

The Trustee.

The Trustee hereby accepts the trust hereby declared and provided and agrees to perform the same upon the terms and conditions in the Original Indenture, as heretofore supplemented and as supplemented by this              Supplemental Indenture, and in this              Supplemental Indenture set forth, and upon the following terms and conditions:

The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this              Supplemental Indenture or the due execution hereof by the Company or for or in respect of the recitals contained herein, all of which recitals are made by the Company only.

ARTICLE V

Miscellaneous Provisions.

Capitalized terms used and not otherwise defined in this              Supplemental Indenture shall have the meanings ascribed thereto in the Indenture.

In case any provision in this              Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality, and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

The Company represents and warrants to the Trustee that this              Supplemental Indenture has been duly and validly executed and delivered by the Company and constitutes the Company’s legal, valid and binding obligation, enforceable against the Company in accordance with its terms.

The Trustee shall be entitled to all of the same rights, protections, immunities and indemnities set forth in the Indenture as if specifically set forth herein.

This              Supplemental Indenture shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns.

In order to comply with laws, rules, regulations and executive orders in effect from time to time applicable to banking institutions, including those relating to the funding of terrorist activities and money laundering, the Trustee is required to obtain, verify and record certain information relating to individuals and entities which maintain a business relationship with the Trustee. Accordingly, each of the parties hereto agrees to provide to the Trustee upon its reasonable request from time to time identifying information and documentation as may be reasonably available to it in order to enable the Trustee to comply with such laws, rules, regulations and executive orders.

Except as hereby expressly amended and supplemented, the Original Indenture heretofore amended and supplemented is in all respects ratified and confirmed, and all the terms and provisions thereof shall be and remain in full force and effect.

This              Supplemental Indenture may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original; but such counterparts together constitute but one and the same instrument.

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IN WITNESS WHEREOF, Idaho Power Company, party hereto of the first part, caused its corporate name to be hereunto affixed and this instrument to be signed and sealed by its President or a Vice President and its corporate seal to be attested by its Secretary or an Assistant Secretary for and on its behalf, and Deutsche Bank Trust Company Americas, party hereto of the second part, in token of its acceptance of the trust hereby created has caused its corporate name to be hereunto affixed and this instrument to be signed by a Vice President and attested by an Associate, on the date hereinafter acknowledged, as of the day and year first above written.

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On the              day of              , in the year 202 , before me personally came             , to me known, who being by me duly sworn did depose and say that he is the              of Idaho Power Company, one of the corporations described in and which executed the above instrument; that she knows the seal of said corporation; that the seal affixed to said instrument is such corporate seal; that it was so affixed by order of the Board of Directors of said corporation, and that she signed her name thereto by like order; the said             , having personally appeared and known to me to be the              of said corporation that executed the instrument, acknowledged to me that said corporation executed the same.

IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed my official seal the day and year in this certificate first above written.

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On the              day of              , in the year 202 , before me personally came             , to me known, who being by me duly sworn did depose and say that he or she is an              of Deutsche Bank Trust Company Americas, one of the corporations described in and which executed the above instrument; that he or she knows the seal of said corporation; and that he or she signed his or her name thereto by order of the Board of Directors of said corporation, and that he or she signed his or her name thereto by like order; the said             , having personally appeared and known to me to be an              of said corporation that executed the instrument, acknowledged to me that said corporation executed the same.

IN WITNESS WHEREOF, I have hereunto subscribed my name and affixed my official seal the day and year in this certificate first above written.

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                    , being first duly sworn, upon oath, deposes and says: that he is an officer, to wit, the              of Idaho Power Company, a corporation, the mortgagor described in the foregoing indenture or mortgage, and makes this affidavit on behalf of said Idaho Power Company; that said indenture or mortgage is made in good faith without any design to hinder, delay or defraud creditors, to secure the indebtedness mentioned or provided for therein.

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                    , being first duly sworn, upon oath, deposes and says: that he or she is an officer, to wit, an              of Deutsche Bank Trust Company Americas, a corporation, one of the mortgagees and trustees named in the foregoing indenture or mortgage, and makes this affidavit on behalf of said Deutsche Bank Trust Company Americas; that said indenture or mortgage is made in good faith without any design to hinder, delay or defraud creditors, to secure the indebtedness mentioned or provided for therein.

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