The AES Corporation (AES) 424B2Prospectus for primary offering

Filed Pursuant to Rule 424(b)(2)
File No. 333-263244

The information in this preliminary prospectus supplement is not complete and may be changed. A registration statement relating to these securities has become effective by rule of the Securities and Exchange Commission. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities, and we are not soliciting an offer to buy these securities, in any jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION,

PRELIMINARY PROSPECTUS SUPPLEMENT DATED MAY 16, 2024

PROSPECTUS SUPPLEMENT

(To Prospectus Dated March 2, 2022)

$    % Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 20    

We are offering $     aggregate principal amount of   % Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 20     (the “notes”). The notes will bear interest (i) from and including the original issue date (as defined herein) to, but excluding,     , 20      at the rate of      % per annum and (ii) from and including     , 20     , during each Reset Period (as defined herein) at a rate per annum equal to the Five-year U.S. Treasury Rate (as defined herein) as of the most recent Reset Interest Determination Date (as defined herein) plus a spread of      %, to be reset on each Reset Date (as defined herein). The notes will mature on     , 20     . Interest on the notes will accrue from and including     , 20   and will be payable semi-annually in arrears on      and      of each year, beginning on     , 20  .

So long as no Event of Default (as defined herein) with respect to the notes has occurred and is continuing, we may, at our option, defer interest payments on notes, from time to time, for one or more deferral periods of up to 20 consecutive semi-annual Interest Payment Periods (as defined herein). During any deferral period, interest on the notes will continue to accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such deferral period in accordance with the terms of the notes) and, in addition interest on deferred interest will accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such deferral period in accordance with the terms of the notes), compounded semi-annually, to the extent permitted by applicable law. See “Description of the Notes—Option to Defer Interest Payments.”

At our option, we may redeem notes at the times and at the applicable redemption prices described in this prospectus supplement. The notes will be our unsecured obligations and will rank junior and subordinate in right of payment to the prior payment in full of our existing and future Senior Indebtedness (as defined herein). The notes will rank equally in right of payment with any future unsecured indebtedness that we may incur from time to time if the terms of such indebtedness provide that it ranks equally with the notes in right of payment. None of our subsidiaries will guarantee the notes. The notes will be issued only in registered form in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.

We intend to allocate an amount equal to the net proceedings from this offering to one or more Eligible Green Projects (as defined herein). Pending such allocation, we intend to use the net proceeds from this offering for general corporate purposes. See “Use of Proceeds.”

The notes are a new issue of securities with no established trading market. We do not intend to apply for the listing or trading of the notes on any securities exchange of trading facility or for inclusion of the notes in any automated quotation system.

Investing in the notes involves risks that are described in the “Risk Factors” section beginning on page S-13 of this prospectus supplement.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters expect to deliver the notes to purchasers in book-entry form on or about    , 2024.

Joint Book-Running Managers

The date of this prospectus supplement is    , 2024.

TABLE OF CONTENTS

We and the underwriters have not authorized anyone to provide any information other than that contained in or incorporated by reference into this prospectus supplement, the accompanying prospectus or any relevant free writing prospectus prepared by or on behalf of us or to which we have referred you. We and the underwriters take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We are not, and the underwriters are not, making an offer or sale of notes in any jurisdiction where the offer or sale is not permitted. You should assume that the information contained in or incorporated by reference into this prospectus supplement and the accompanying prospectus is accurate only as of the date appearing on the front cover of this prospectus supplement or the accompanying prospectus, as applicable, or the date of the applicable incorporated document. Our business, financial condition, results of operations and prospects may have changed since that date.

i

ABOUT THIS PROSPECTUS SUPPLEMENT

This prospectus supplement is part of a registration statement that we filed with the Securities and Exchange Commission (the “SEC”) utilizing a “shelf” registration process. Under this shelf registration process, we are offering to sell the notes using this prospectus supplement and the accompanying prospectus. This prospectus supplement describes the specific terms of this offering. The accompanying prospectus gives more general information, some of which may not apply to this offering. You should read this prospectus supplement together with the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus before making a decision to invest in the notes. If the information in this prospectus supplement or the information incorporated by reference into this prospectus supplement is inconsistent with the accompanying prospectus, the information in this prospectus supplement or the information incorporated by reference into this prospectus supplement will apply and will supersede that information in the accompanying prospectus.

INCORPORATION BY REFERENCE

We have “incorporated by reference” into this prospectus supplement and the accompanying prospectus certain documents that we file with the SEC. This means that we can disclose important information to you by referring you to another document filed separately with the SEC. This information incorporated by reference is a part of this prospectus supplement and the accompanying prospectus, unless we provide you with different information in this prospectus supplement or the information is modified or superseded by a subsequently filed document. Any information referred to in this way is considered part of this prospectus supplement and the accompanying prospectus from the date we file that document.

This prospectus supplement and the accompanying prospectus incorporate the documents listed below that we have previously filed with the SEC (other than, in each case, documents or information deemed to have been furnished and not filed in accordance with the SEC’s rules and regulations), which contain important information about us, our business, our financial condition and various important risks you should consider before investing in the notes:

Any reports filed by us pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) on or after the date of this prospectus supplement and before the completion of this offering of the notes will be deemed to be incorporated by reference into this prospectus supplement and the accompanying prospectus and will automatically update, where applicable, and supersede any information contained in this prospectus supplement or the accompanying prospectus or incorporated by reference into this prospectus supplement and the accompanying prospectus. Unless specifically stated to the contrary, none of the information that we disclose under Items 2.02 or 7.01 of any Current Report on Form 8-K that we have furnished or may from time to time furnish with the SEC is or will be incorporated by reference into, or otherwise included in, this prospectus supplement or the accompanying prospectus.

S-1

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC also maintains an internet site at http://www.sec.gov, from which you can access our filings with the SEC. We maintain an internet site located at http://www.aes.com, which contains information pertaining to us. The website (including the information contained in the website or connected to the website) is not and shall not be deemed incorporated into or a part of this prospectus supplement or the accompanying prospectus.

We have filed a registration statement on Form S-3 with the SEC with respect to the notes offered hereby. This prospectus supplement and the accompanying prospectus do not contain all of the information included in the registration statement, and you should refer to the registration statement and its exhibits for that information.

Any statement contained in this prospectus supplement, the accompanying prospectus or the documents incorporated by reference herein concerning, describing or summarizing the provisions of any document filed with the SEC is not necessarily complete, and is qualified in its entirety by reference to the full text of the document filed.

You may obtain, at no cost, copies of each of the documents incorporated by reference into this prospectus supplement or the accompanying prospectus (other than an exhibit to a filing unless that exhibit is specifically incorporated by reference in that filing) by writing or telephoning the office of General Counsel, The AES Corporation, 4300 Wilson Boulevard, Arlington, Virginia 22203, telephone number (703) 682-1159.

S-2

S-3

S-4

S-5

S-6

S-7

S-8

S-9

S-10

S-11

S-12

RISK FACTORS

Investing in the notes involves a high degree of risk. You should carefully consider the risks discussed below, together with the financial and other information contained in or incorporated by reference into this prospectus supplement and the accompanying prospectus, before deciding whether to invest in the notes. In addition to the risk factors discussed below, please read the sections entitled “Risk Factors” and “Forward-Looking Information and Risk Factor Summary” in our Annual Report, which is incorporated herein by reference, and the section entitled “Forward-Looking Statements” in this prospectus supplement, for more information about important risks that you should consider before investing in the notes.

Risks Related to the Notes

The AES Corporation is a holding company and its ability to make payments on its outstanding indebtedness, is dependent upon the receipt of funds from our subsidiaries.

The AES Corporation is a holding company with no material assets other than the stock of its subsidiaries. Almost all of The AES Corporation’s cash flow is generated by the operating activities of its subsidiaries. Therefore, The AES Corporation’s ability to make payments on its indebtedness and to fund its other obligations is dependent not only on the ability of its subsidiaries to generate cash, but also on the ability of the subsidiaries to distribute cash to it in the form of dividends, fees, interest, tax sharing payments, loans or otherwise.

Our subsidiaries face various restrictions in their ability to distribute cash. Most of the subsidiaries are obligated, pursuant to loan agreements, indentures or non-recourse financing arrangements, to satisfy certain restricted payment covenants or other conditions before they may make distributions to The AES Corporation. Business performance and local accounting and tax rules may also limit dividend distributions. Subsidiaries in foreign countries may also be prevented from distributing funds to The AES Corporation as a result of foreign governments restricting the repatriation of funds or the conversion of currencies.

The AES Corporation’s subsidiaries are separate and distinct legal entities and, unless they have expressly guaranteed any of The AES Corporation’s indebtedness, have no obligation, contingent or otherwise, to pay any amounts due pursuant to such debt or to make any funds available whether by dividends, fees, loans or other payments.

The notes will be structurally subordinated to the liabilities of our subsidiaries. Our subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay any amounts due on the notes offered hereby or to make any funds available therefor, whether by dividends, fees, loans or other payments. Any right we have to receive any assets of any of our subsidiaries upon any liquidation, dissolution, winding up, receivership, reorganization, assignment for the benefit of creditors, marshaling of assets and liabilities or any bankruptcy, insolvency or similar proceedings (and the consequent right of the holders of our debt to participate in the distribution of, or to realize proceeds from, those assets) will be structurally subordinated to the claims of any such subsidiary’s creditors (including trade creditors and holders of debt issued by such subsidiary). Accordingly, the notes will be structurally subordinated to all liabilities of our subsidiaries. At March 31, 2024, our subsidiaries, excluding entities held for sale, had approximately $23.9 billion of debt outstanding. The indenture governing the notes will not limit the ability of our subsidiaries to incur additional debt, including guaranteeing other debt of The AES Corporation.

The notes are subordinated or effectively subordinated to all of our indebtedness (other than any unsecured indebtedness that we may in the future incur that ranks junior to or pari passu with the notes) and the indenture does not limit the aggregate amount of indebtedness that we or our subsidiaries may incur.

Pursuant to the terms of the indenture, the notes will be subordinated in right of payment to all of our existing and future Senior Indebtedness (as defined in “Description of the Notes—Subordination”). This means

S-13

that, in the event of (a) our dissolution, winding-up, liquidation or reorganization, (b) our failure to pay any interest, principal or other monetary amounts due on any of its Senior Indebtedness when due (and continuance of that default beyond any applicable grace period) or (c) acceleration of the maturity of any of our Senior Indebtedness as a result of a default, we will not be permitted to make any payments on the notes until, in the case of clause (a), all amounts due or to become due on all of its Senior Indebtedness have been paid in full, or, in the case of clauses (b) and (c), all amounts due on its Senior Indebtedness have been paid in full. For additional information about the subordination of the notes to our Senior Indebtedness, see “Description of the Notes—Subordination” in this prospectus supplement.

At March 31, 2024, we had approximately $29.2 billion aggregate principal amount of Senior Indebtedness outstanding, excluding debt at entities held for sale. In addition, the notes will be effectively subordinated in right of payment to any secured indebtedness we may incur in the future (to the extent of the value of the collateral securing such secured indebtedness). As of March 31, 2023, the AES Corporation had no secured debt outstanding as a result of its receipt of an investment grade rating by Standard & Poor’s in November 2020. However, prior to November 2020, all outstanding obligations under our senior credit facility and our senior secured first lien notes due 2025 (the “2025 Notes”) and our senior secured first lien notes due 2030 (the “2030 Notes”) were secured by certain of our assets, including the pledge of capital stock of many of The AES Corporation’s directly held subsidiaries. If at least two of Moody’s, Standard & Poor’s or Fitch cease to provide an investment grade rating to our long-term debt securities, and we were unable to obtain an investment grade rating by another ratings agency, the collateral reversion provisions in our senior credit facility and the indenture governing the 2025 Notes and the 2030 Notes would require us to secure the indebtedness outstanding under such instruments with substantially the same collateral. Most of the debt of The AES Corporation’s subsidiaries is secured by substantially all of the assets of those subsidiaries. Due to the subordination of the notes to our Senior Indebtedness and the effective subordination of the notes to any of our secured indebtedness, if our assets are distributed upon dissolution, winding-up, liquidation or reorganization, holders of our Senior Indebtedness and any secured indebtedness would likely recover more, ratably, than the holders of the notes, and it is possible that no payments would be made to the holders of the notes.

The indenture governing the notes will not limit the amount of Senior Indebtedness or secured indebtedness that may be incurred by The AES Corporation or the amount of other indebtedness or liabilities that may be incurred by The AES Corporation or any of its subsidiaries. The incurrence by The AES Corporation or its subsidiaries of additional indebtedness, including the incurrence of additional Senior Indebtedness or secured indebtedness by The AES Corporation, may have adverse consequences for the holders of the notes, including making it more difficult for The AES Corporation to satisfy its obligations with respect to the notes, a loss of all or part of the trading value of the notes and a risk that one or more of the credit ratings of the notes could be lowered or withdrawn. Both The AES Corporation and its subsidiaries expect to incur substantial amounts of additional indebtedness, including Senior Indebtedness, in the future.

The interest rate on the notes will reset on the First Reset Date and each subsequent Reset Date.

The interest rate on the notes from their original issue date to the First Reset Date will be    % per annum. Beginning on the First Reset Date, the interest rate on the notes for each Reset Period will equal the Five-year U.S. Treasury Rate as of the most recent Reset Interest Determination Date plus a spread of    %, to be reset on each Reset Date. We have no control over the factors that may affect U.S. Treasury rates, including geopolitical, economic, financial, political, regulatory, judicial or other conditions or events.

The historical Five-year U.S. Treasury Rates are not an indication of future Five-year U.S. Treasury Rates.

As noted above, the annual interest rate on the notes for each Reset Period will be set by reference to the Five year U.S. Treasury Rate as of the most recent Reset Interest Determination Date. In the past, U.S. Treasury rates have experienced significant fluctuations. You should note that historical levels, fluctuations and trends of U.S. Treasury rates are not necessarily indicative of future levels. Any historical upward or downward trend in

S-14

U.S. Treasury rates is not an indication that U.S. Treasury rates are more or less likely to increase or decrease at any time in the future and you should not take historical U.S. Treasury rates as an indication of future U.S. Treasury Rates.

We can defer interest payments on the notes for one or more Optional Deferral Periods of up to 20 consecutive semi-annual Interest Payment Periods each. This may affect the market price of the notes.

So long as no Event of Default (as defined in “Description of the Notes—Events of Default”) with respect to the notes has occurred and is continuing, we may, at our option, defer interest payments on the notes, from time to time, for one or more Optional Deferral Periods of up to 20 consecutive semi-annual Interest Payment Periods each, except that no such Optional Deferral Period may extend beyond the final maturity date of the notes or end on a day other than the day immediately preceding an Interest Payment Date. In other words, we may declare at our discretion up to a ten-year interest payment moratorium on the notes and may choose to do that on one or more occasions. Moreover, following the end of any Optional Deferral Period, if all amounts then due on the notes are paid, we could immediately start a new Optional Deferral Period of up to 20 consecutive semi-annual Interest Payment Periods. No interest will be paid or payable on the notes during any Optional Deferral Period unless we elect, at our option, to redeem notes during such Optional Deferral Period, in which case accrued and unpaid interest to, but excluding, the redemption date will be due and payable on such redemption date only on the notes being redeemed, or unless the principal of and interest on the notes shall have been declared due and payable as a result of an Event of Default with respect to the notes, in which case all accrued and unpaid interest on the notes shall become due and payable. Instead, interest on the notes would be deferred but would continue to accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such Optional Deferral Period in accordance with the terms of the notes). In addition, during any Optional Deferral Period interest on the deferred interest would accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such Optional Deferral Period in accordance with the terms of the notes), compounded semi-annually, to the extent permitted by applicable law. If we exercise this interest deferral right, the notes may trade at a price that does not reflect the value of accrued and unpaid interest on the notes or that is otherwise substantially less than the price at which the notes would have traded if we had not exercised such deferral right. If we exercise this interest deferral right and you sell your notes during an Optional Deferral Period, you may not receive the same return on your investment as a holder that continues to hold its notes until we pay the deferred interest following the end of such Optional Deferral Period. In addition, as a result of our right to defer interest payments, the market price of the notes may be more volatile than other securities that do not have these rights.

Holders subject to U.S. federal income taxation may have to pay taxes on interest on the notes before they receive payments from us.

If we defer interest payments on the notes, a holder that is subject to U.S. federal income tax on a net income basis will be required to accrue interest income for U.S. federal income tax purposes in respect of such holder’s proportionate share of the accrued but unpaid interest on the notes, even if such holder normally reports income when received. As a result, such a holder will be required to include the accrued interest in its gross income for United States federal income tax purposes even though the holder will not have received any cash. A holder’s adjusted tax basis in a note generally will be increased by such amounts that it was required to include in gross income. Unpaid interest accrued on the notes during an Optional Deferral Period will be payable on the Interest Payment Date immediately following the last day of such Optional Deferral Period. If a holder sells its notes on or before the record date for such Interest Payment Date, then all of the interest accrued on such notes during the Optional Deferral Period will be paid to the person who is the registered owner of those notes at the close of business on such record date, and the holder that sold those notes will not receive from us any of the interest that accrued on those notes during the Optional Deferral Period and that such holder reported as income for tax purposes. Holders should consult their tax advisors regarding the tax consequences of an investment in the notes. For more information regarding the U.S. federal income tax consequences of owning and disposing of the notes, see “U.S. Federal Income Tax Consequences.”

S-15

Holders of the notes will have limited rights of acceleration.

Holders of the notes and the trustee under the indenture may accelerate payment of the principal and interest on the notes only upon the occurrence and continuation of certain events of default. Payment of principal and interest on the notes may be accelerated upon the occurrence of an Event of Default under the indenture related to failure to pay interest within 30 days after it is due, failure to pay principal or premium, if any, on the notes when due, and certain events of bankruptcy, insolvency, receivership or reorganization relating to The AES Corporation (but not its subsidiaries). Holders of the notes and the trustee will not have the right to accelerate payment of the principal or interest on the notes upon the breach of any other covenant in the indenture. See “Description of the Notes—Option to Defer Interest Payments” and “Description of the Notes—Events of Default.”

You cannot be sure that an active trading market will develop for these notes, which may hinder your ability to liquidate your investment.

The notes are a new issue of securities with no established trading market. We have been informed by the underwriters that they intend to make a market for the notes after the offering is completed. However, the underwriters may cease their market-making activities at any time. In addition, the liquidity of the trading market in the notes, and the market prices quoted for the notes, may be adversely affected by changes in the overall market for fixed income securities and by changes in our financial performance or prospects or in the prospects for companies in our industry generally. In addition, such market-making activity will be subject to limits imposed by the Securities Act of 1933, as amended (the “Securities Act”), and the Exchange Act. The market price of the notes may also be impacted by any failure by us to meet or continue to meet the investment requirements of certain environmentally focused investors with respect to the notes or with respect to our Eligible Green Projects. As a result, we cannot assure that an active trading market will develop for the notes. If no active trading market develops, you may not be able to resell your notes at their fair market value or at all.

Credit rating downgrades could adversely affect the trading price of the notes. In addition, we may redeem the notes if a rating agency makes certain changes in the equity credit methodology for securities such as the notes.

The trading price for the notes may be affected by our credit rating. Credit ratings are continually revised. Any downgrade in our credit ratings could increase our borrowing costs and adversely affect the trading prices of the notes or the trading markets for the notes to the extent trading markets for the notes develop. Credit ratings are not recommendations to purchase, hold or sell the notes. Further, the credit ratings agencies may, from time to time in the future, change the way they analyze securities with features similar to the notes. This may include, for example, changes to the relationship between ratings assigned to an issuer’s senior securities and ratings assigned to subordinated securities with features similar to the notes. If any rating agencies change their practices for rating these types of securities in the future, and the ratings of the notes are subsequently lowered, the trading price of the notes could be negatively affected. In addition, we may redeem the notes, at our option, in whole but not in part, if a rating agency makes certain changes in the equity credit methodology for securities such as the notes. See “Description of the Notes—Redemption—Redemption Following a Rating Agency Event.”

The notes are subject to early redemption.

As described under “Description of the Notes—Redemption,” we may at our option redeem the notes in whole or in part at the times and the applicable redemption price described thereunder. Consequently, we may choose to redeem your notes at a time when prevailing interest rates are lower than the effective interest rate paid on your notes and at times when the trading price of your notes is above the redemption price. You may not be able to reinvest the redemption proceeds in an investment with a return that is as high as the return you would have earned on the notes if they had not been redeemed and with a similar level of investment risk.

S-16

Investors should not expect us to redeem the notes on the first or any other date on which they are redeemable.

We may redeem some or all of the notes, at our option, in whole or in part, (i) on any day in the period commencing on the date falling 90 days prior to the First Reset Date and ending on and including the First Reset Date and (ii) after the First Reset Date, on any Interest Payment Date, at a redemption price in cash equal to 100% of the principal amount of the notes being redeemed, plus, subject to the terms described in the first paragraph under “Description of the Notes—Redemption—Redemption Procedures; Cancellation of Redemption” in this prospectus supplement, accrued and unpaid interest on the notes to be redeemed to, but excluding, the redemption date. In addition, the notes may be redeemed by us at our option, in whole but not in part, following the occurrence and during the continuance of either a Tax Event or a Rating Agency Event (as those terms are defined under “Description of the Notes—Redemption” in this prospectus supplement). Any decision we may make at any time to redeem the notes before their final maturity date will depend upon, among other things, the strength of our balance sheet, our results of operations, our access to the capital markets, interest rates, our growth strategy, and general market conditions at such time. Accordingly, while we may decide to do so, investors should not expect us to redeem the notes on the first or any other date on which they are redeemable.

We have a significant amount of debt, which could adversely affect our business and our ability to fulfill our obligations.

As of March 31, 2024, we had approximately $29.2 billion of outstanding debt on a consolidated basis, of which approximately $4.2 billion is classified as current maturity. Since we have such a high level of debt, a substantial portion of cash flow from operations must be used to make payments on this debt. This high level of debt and related security could have other important consequences to us and our investors, including:

The agreements governing our debt, including the debt of our subsidiaries, limit, but do not prohibit the incurrence of additional debt. We will not be restricted under the terms of the indenture governing the notes from incurring additional debt, securing existing or future debt, recapitalizing our debt or taking a number of other actions that are not limited by the terms of the indenture governing the notes that could have the effect of diminishing our ability to make payments on our debt, including the notes, when due. If we were to become more leveraged, the risks described above would increase. Further, our actual cash requirements in the future may be greater than expected. Accordingly, our cash flows may not be sufficient to repay at maturity all of the outstanding debt, including the notes, as it becomes due and, in that event, we may not be able to borrow money, sell assets, raise equity or otherwise raise funds on acceptable terms or at all to refinance our debt as it becomes due. In addition, our ability to refinance existing or future indebtedness will depend on the capital markets and

S-17

our financial condition at such time. Any refinancing of our debt could come at higher interest rates or may require us to comply with onerous covenants, which could restrict our business operations.

The indenture will not require that we allocate amounts relating to this offering to expenditures meeting the Eligibility Criteria or take the other actions as described under “Use of Proceeds.”

While it is our intention to allocate an amount equal to the net proceeds of this offering to refinance or finance, in whole or in part, new or ongoing renewable projects that meet the Eligibility Criteria (“Eligible Green Projects”) in, or substantially in, the manner described under “Use of Proceeds” and to take the other actions as described under “Use of Proceeds,” any failure to do so will not constitute an event of default under the indenture nor require us to purchase or redeem any of the notes or make any additional payments to holders or take or refrain from taking any particular action as a result thereof. There can be no assurance that the relevant projects or uses that are the subject of, or related to, any Eligible Green Projects will be capable of being implemented in or substantially in such manner or in accordance with any timing schedule and that accordingly an amount equal to such proceeds will be totally or partially allocated to such Eligible Green Projects. There can also be no assurance that such Eligible Green Projects will lead to the results or outcomes (whether or not related to environmental or broader sustainability issues) originally anticipated by us. Any failure to allocate amounts relating to this offering to Eligible Green Projects, meet or continue to meet the investment requirements or aspirations of certain sustainability focused investors, or take the other actions as described under “Use of Proceeds,” may negatively affect the market price of the notes to the extent investors are required or choose to sell their holdings as a result of such failure.

We may allocate or re-allocate amounts relating to this offering in ways that you do not consider to meet the criteria for an Eligible Green Project.

We have significant flexibility in allocating amounts relating to this offering as described under “Use of Proceeds,” including re-allocating in the event we no longer own or operate assets to which we originally allocated such amounts in respect of Eligible Green Projects or if the assets to which we originally allocated such amounts no longer meet the criteria for an Eligible Green Project. The ultimate allocation of amounts relating to this offering may therefore not meet some or all of your expectations at the time of this offering or as they may evolve during the life of this offering, even if we believe the expenditures to which we allocated such amounts were in respect of Eligible Green Projects.

We cannot assure you that we will be able to identify sufficient business activities qualifying as Eligible Green Projects to which we could re-allocate amounts relating to this offering if we no longer own or operate a previously-allocated Eligible Green Project or if a previously-allocated Eligible Green Project no longer meets the applicable criteria. Any failure to do so will not constitute an event of default under the indenture nor require us to purchase or redeem any of the notes or make any additional payments to holders or to take or refrain from taking any particular action as a result thereof.

We cannot provide assurance that disbursements or allocations for Eligible Green Projects will be made or the amounts of such disbursements or allocations or, if such disbursements or allocations are made, on the timing of such disbursements or allocation.

The value of the notes may be negatively affected to the extent investors are required or choose to sell their holdings due to the ultimate allocation of amounts relating to this offering not meeting their expectations or requirements.

S-18

The Eligible Green Projects receiving allocations may not meet internationally recognized sustainability standards or your particular investment criteria, which may cause the market value of the notes to deteriorate. We cannot assure you that our reporting described under “Use of Proceeds” will meet your needs or expectations.

Although we have used the term “Eligible Green Projects” or otherwise referred to “green” aspects of this financing in this prospectus supplement, there is no universally agreed definition (legal, regulatory or otherwise) nor market consensus as to what constitutes a “green” or “sustainable” or an equivalently-labelled expenditure or as to what precise attributes are required for a particular expenditure to be defined as “green” or “sustainable” or given such an equivalent label nor can any assurance be given that such a definition or consensus will develop over time.

Accordingly, no assurance is or can be given to investors that the Eligible Green Projects will meet any or all investor expectations or requirements regarding such “green,” “sustainable” or other equivalently-labelled performance objectives or that this offering will constitute a suitable investment for all investors seeking exposure to green assets or providing funds which can be considered to constitute sustainable financing.

Prospective investors in this offering must determine for themselves the relevance of the description of the use of proceeds of this offering for the purposes of any investment by them together with any other investigation that they deem necessary. We can give no assurance that the Eligible Green Projects to which the amounts relating to this offering are allocated will satisfy, or continue to satisfy, investor criteria or expectations, taxonomies or standards regarding environmental impact and sustainability performance, nor can we give any assurance that the Eligible Green Projects criteria and other aspects of the framework described under “Use of Proceeds” will satisfy, or continue to satisfy present or future investor criteria or expectations, taxonomies, standards, laws, regulations or industry guidelines.

In addition, we give no assurance that any information that we or any other person may provide in connection with this offering now or in the future will be sufficient to enable any potential investor to satisfy any disclosure or reporting requirements imposed on it from time to time either as a result of their own objectives or those of their clients as set out in their bylaws or other governing rules and/or investment portfolio mandates. In addition, such requirements may have been conditioned by the application of laws and regulations relating to the types of, and criteria relating to, investments that such funds can make in order to qualify or be eligible as a particular type of “green” or other sustainable finance related investment. The rules applicable to such investors and funds, whether internal or resulting from any such investment portfolio mandates and/or applicable laws and regulations, may require them to make periodic disclosure of their investments, including any investment in this offering. Such requirements may evolve over time.

The value of the notes may be negatively affected to the extent investors are required or choose to sell their holdings due to our definition of Eligible Green Projects or reporting relating to this offering not meeting their expectations or requirements. There will be no external review or second party opinion in connection with the offering of the notes. Therefore, our use of the proceeds from the offering sale of the notes may not comply with all or part of the framework described under the “Use of Proceeds” or any relevant legislation or standards.

The market value of the notes may be negatively affected to the extent that perception by investors of the suitability of the notes as green bonds deteriorates or demand for sustainability-themed investment products diminishes.

Perception by investors of the suitability of the notes as green bonds could be negatively affected by dissatisfaction with our compliance with the framework described under “Use of Proceeds,” controversies involving the environmental or sustainability impact of our business or industry, evolving standards or market consensus as to what constitutes a green bond or the desirability of investing in green bonds or any opinion or certification as to the suitability of the notes as green bonds no longer being in effect. Additionally, the Eligible

S-19

Green Projects to which we intend to allocate amounts relating to this offering have complex direct or indirect environmental or sustainability impacts, and such Eligible Green Projects may become controversial or criticized by activist groups or other stakeholders. None of the initial purchaser, trustee or any stock exchange, securities market segment or regulatory body makes any representation as to the suitability of the notes to meet or fulfill environmental and/or sustainability criteria, expectations, impact or performance required by prospective investors, any third-party reviewer or opinion provider, any stock exchange or securities market. The value of the notes may be negatively affected to the extent investors are required or choose to sell their holdings due to deterioration in the perception by the investor or the market in general as to the suitability of this offering as green bonds. The value of the notes may be also negatively affected to the extent demand for sustainability-themed investment products diminishes due to evolving investor preferences, increased regulatory or market scrutiny on funds and strategies dedicated to sustainability or environmental, social or governance themed investing or for other reasons.

S-20

FORWARD-LOOKING STATEMENTS

This prospectus supplement includes or incorporates by reference statements concerning our expectations, beliefs, plans, objectives, goals, strategies, and future events or performance. Such statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Although we believe that these forward-looking statements and the underlying assumptions are reasonable, we cannot assure you that they will prove to be correct.

Forward-looking statements involve a number of risks and uncertainties, and there are factors that could cause actual results to differ materially from those expressed or implied in our forward-looking statements. Some of those factors (in addition to the factors described under “Risk Factors” above or the risk factors incorporated by reference into this prospectus supplement) include:

S-21

S-22

These factors, in addition to others described herein under “Risk Factors,” in our Annual Report, Quarterly Report and in subsequent securities filings, should not be construed as a comprehensive listing of factors that could cause results to vary from our forward-looking information.

We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise. If one or more forward-looking statements are updated, no inference should be drawn that additional updates will be made with respect to those or other forward-looking statements.

S-23

USE OF PROCEEDS

The net proceeds from this offering are estimated to be approximately $    , after deducting underwriting discounts and commissions and estimated offering expenses payable by us.

We intend to allocate an amount equal to the net proceeds from this offering to one or more Eligible Green Projects, which may include the development or redevelopment of such projects. Pending such allocation, we intend to use the net proceeds from this offering for general corporate purposes.

“Eligible Green Projects” means projects that meet the Eligibility Criteria (as defined below), including those for which AES made disbursements within the three years prior to this offering and will include disbursements through the maturity date.

“Eligibility Criteria” means any of the following:

Exclusions

Net Proceeds will not be allocated to the following investments:

Process for Project Evaluation and Selection

Projects selected for allocation of net proceeds from a green financing will be assessed and evaluated by participants from various functional areas including AES’ Treasury and Sustainability Teams.

Management of Proceeds

The Company expects to allocate the majority of an amount equal to the net proceeds from this offering within three years of the date of such financing. Pending such allocation, we intend to use the net proceeds from this offering to refinance existing indebtedness, fund investments in our Renewables SBU, fund investments in our U.S. utilities businesses and/or for general corporate purposes.

So long as the notes remain outstanding, our internal records will show, quarterly, the amount of the net proceeds from the notes allocated to Eligible Green Projects, as well as the amount of net proceeds pending allocation.

AES will use reasonable efforts to substitute any material Eligible Green Projects that are no longer eligible as soon as practicable upon identifying an appropriate substitute Eligible Green Project.

S-24

Payment of principal of and interest on the notes will be made from AES’ general funds and will not be directly linked to the performance of any Eligible Green Projects.

Reporting

We will provide, and keep readily available, on a designated website, information on the allocation of net proceeds of the notes, to be updated at least annually until full allocation and as necessary thereafter in the event of material developments. This information will include, subject to any confidentiality considerations, (i) amounts allocated to eligible Green Projects, by category, (ii) the amount pending allocation, (iii) case studies with additional information on highlighted projects, and (iv) an assertion by AES management regarding the proportion of the net proceeds invested in qualifying Eligible Green Projects. In the first report published after net proceeds are fully allocated, the allocations and assertions will be accompanied by a report from an independent accountant in respect of the independent accountant’s examination of management’s assertion.

Key Performance Indicators (KPIs): Where feasible, AES will report estimated environmental impacts (on an annual basis where relevant) of projects to which a portion of the net proceeds of a green financing under this framework are allocated. Potential KPIs include, but are not limited to, the following:

Definition and calculation of KPIs will be at the sole discretion of the Company.

Green Bond Principles

It is our intention that this offering is in alignment with the Green Bond Principles 2018, which are a set of voluntary guidelines for the issuance of green bonds developed by a committee made up of issuers, investors and intermediaries in the green bond market and are intended to promote integrity in the green bond market through guidelines that recommend transparency, disclosure and reporting. The Green Bond Principles have four components:

The information and materials found on our website, including, without limitation, any Green Financing Report and the framework, are not part of or incorporated by reference into this prospectus supplement or the accompanying prospectus or any other report or filing filed with the SEC. Neither the notes nor the indenture governing the notes requires us to use the net proceeds from the sale of the notes as described above, and any

S-25

failure of the Company to comply with the foregoing will not constitute a breach of or an event of default under the notes or the indenture governing the notes. The above description of the use of proceeds from the sale of the notes is not intended to modify or add any covenant or contractual obligation undertaken by us under the notes or the indenture governing the notes.

S-26

DESCRIPTION OF THE NOTES

The     % Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 20     (the “notes”) will be a series of our junior subordinated debt securities issued under an indenture between The AES Corporation and Deutsche Bank Trust Company Americas, as trustee (the “Trustee”), to be dated as of the Original Issue Date (as defined below) (the “Indenture”). The following summaries of certain provisions of the Indenture do not purport to be complete and are subject to, and are qualified in their entirety by reference to, all of the provisions of the Indenture, including the definition in the Indenture of certain terms. Wherever particular sections or defined terms of the Indenture are referred to, such sections or defined terms are incorporated into this prospectus supplement by reference. Forms of the notes and the Indenture will be filed with the SEC and you may obtain copies as described under “Where You Can Find More Information” in the accompanying prospectus.

As used in this “Description of the Notes”, the terms “AES”, “we”, “us” and “our” mean The AES Corporation, and do not include any of its subsidiaries.

The Indenture will not limit the aggregate principal amount of junior subordinated debt that may be issued thereunder and will provide that junior subordinated debt securities may be issued thereunder from time to time in one or more series.

General

The notes will constitute a separate series of our subordinated debt securities under the Indenture and will be issued in the aggregate principal amount of $    . We may, from time to time, without notice to or consent of the holders of the notes, issue additional notes and any such additional notes shall form a single series under the Indenture with the notes offered by this prospectus supplement; provided that if any such additional notes are not fungible with the notes for U.S. federal income tax purposes, such additional notes will be issued under a separate CUSIP number. Any such additional notes shall have the same form and terms as the notes offered by this prospectus supplement (other than the offering price, the date of issuance and, under certain circumstances, the date from which interest thereon shall begin to accrue and the first Interest Payment Date, and except that the provisions of the notes specifying the rate of interest thereon to but excluding the First Reset Date (as defined below) shall not be applicable to any such additional notes whose date of original issuance is on or after the First Reset Date).

Interest Rate and Maturity

The notes will mature on    , 20     (the “Final Maturity Date”). The notes will be subject to redemption at our option as described below under “—Redemption”.

The notes will bear interest (i) from and including    , 2024 (the “Original Issue Date”) to, but excluding,     , 20  (the “First Reset Date”) at the rate of     % per annum (the “Initial Interest Rate”) and (ii) from and including the First Reset Date, during each Reset Period (as defined below) at a rate per annum equal to the Five-year U.S. Treasury Rate (as defined below) as of the most recent Reset Interest Determination Date (as defined below) plus a spread of     %, to be reset on each Reset Date (as defined below). Interest on the notes will accrue from the Original Issue Date and will be payable semi-annually in arrears on  and  (each, an “Interest Payment Date”) of each year, beginning on    , 20       , to the holders of record at the close of business on the immediately preceding     and    , respectively (each, a “Record Date”), subject to our right to defer interest payments as described below under “—Option to Defer Interest Payments.” Interest on the notes will be computed on the basis of a 360-day year of twelve 30-day months.

S-27

The applicable interest rate for each Reset Period will be determined by the calculation agent (as defined below), as of the applicable Reset Interest Determination Date, in accordance with the following provisions:

“Five-year U.S. Treasury Rate” means, as of any Reset Interest Determination Date, (i) an interest rate (expressed as a decimal) determined to be the per annum rate equal to the arithmetic mean of the yields to maturity for U.S. Treasury securities adjusted to constant maturity with a maturity of five years from the next Reset Date and trading in the public securities markets, for the five consecutive business days (as defined below) immediately prior to the respective Reset Interest Determination Date as published in the most recent H.15, or (ii) if there is no such published U.S. Treasury security with a maturity of five years from the next Reset Date and trading in the public securities markets, then the rate will be determined by interpolation between the arithmetic mean of the yields to maturity for each of the two series of U.S. Treasury securities adjusted to constant maturity trading in the public securities markets, (A) one maturing as close as possible to, but earlier than, the Reset Date following the next succeeding Reset Interest Determination Date, and (B) the other maturing as close as possible to, but later than, the Reset Date following the next succeeding Reset Interest Determination Date, in each case for the five consecutive business days immediately prior to the respective Reset Interest Determination Date as published in the most recent H.15. If the Five-year U.S. Treasury Rate cannot be determined pursuant to the methods described in clause (i) or (ii) above, then the Five-year U.S. Treasury Rate will be the same interest rate determined for the prior Reset Interest Determination Date or, if the Five-year U.S. Treasury Rate cannot be so determined as of the Reset Interest Determination Date preceding the First Reset Date, then the interest rate applicable for the Reset Period beginning on and including the First Reset Date will be deemed to be the Initial Interest Rate.

“H.15” means the statistical release designated as such, or any successor publication, published by the Board of Governors of the U.S. Federal Reserve System (or any successor thereto).

The “most recent H.15” means the H.15 published closest in time but prior to the close of business on the second business day prior to the applicable Reset Date.

“Reset Date” means the First Reset Date and     of every fifth year after 20    .

“Reset Interest Determination Date” means, in respect of any Reset Period, the day falling two business days prior to the first day of such Reset Period.

“Reset Period” means the period from and including the First Reset Date to, but excluding, the next following Reset Date and thereafter each period from and including a Reset Date to, but excluding, the next following Reset Date.

As used under this caption “Description of the Notes,” the term “business day” means, unless otherwise expressly stated, any day other than (i) a Saturday or Sunday or (ii) a day on which banking institutions in The City of New York are authorized or obligated by law or executive order to remain closed.

The term “calculation agent” means, at any time, the entity appointed by us and serving as such agent with respect to the notes at such time. Unless we have validly called all of the outstanding notes for redemption on a redemption date occurring prior to the First Reset Date, we will appoint a calculation agent for the notes prior to the Reset Interest Determination Date immediately preceding the First Reset Date; provided that, if we have called all of the outstanding notes for redemption on a redemption date occurring prior to the First Reset Date but we do not redeem all of the outstanding notes on such redemption date, we will appoint a calculation agent for the notes as promptly as practicable after such proposed redemption date. We may terminate any such appointment and may appoint a successor calculation agent at any time and from time to time (so long as there shall always be a calculation agent in respect of the notes when so required). We may appoint AES or an affiliate of AES as calculation agent.

S-28

As provided above, the applicable interest rate for each Reset Period will be determined by the calculation agent as of the applicable Reset Interest Determination Date. Promptly upon such determination, the calculation agent will notify us of the interest rate for the Reset Period and we will promptly notify, or cause the calculation agent to promptly notify, the Trustee and each paying agent of such interest rate. The calculation agent’s determination of any interest rate, and its calculation of the amount of interest for any Interest Payment Period (as defined below under “—Option to Defer Interest Payments”) beginning on or after the First Reset Date, will be on file at our principal offices, will be made available to any holder or beneficial owner of the notes upon request and will be final and binding in the absence of manifest error.

If any Interest Payment Date, redemption date or the maturity date of the notes is not a business day (as defined in the Indenture) at any place of payment, then payment of the principal, premium, if any, and interest may be made on the next business day (as defined in the Indenture) at that place of payment. In that case, no interest will accrue on the amount payable for the period from and after the applicable Interest Payment Date, redemption date or maturity date, as the case may be.

No Listing

The notes are a new issue of securities with no established trading market. We do not intend to apply for the listing or trading of the notes on any securities exchange or trading facility or for inclusion of the notes in any automated quotation system.

Ranking

The notes will be our unsecured obligations and will rank junior and subordinate in right of payment to the prior payment in full of our existing and future Senior Indebtedness (as defined below under “—Subordination”), to the extent and in the manner set forth under the caption “—Subordination” below. The notes will rank equally in right of payment with any future unsecured indebtedness that we may incur from time to time if the terms of such indebtedness provide that it ranks equally with the notes in right of payment. At March 31, 2024, AES had approximately $5.3 billion of senior unsecured and recourse debt outstanding.

In addition, the notes will be effectively subordinated in right of payment to any secured indebtedness we may incur (to the extent of the value of the collateral securing such secured indebtedness). As of March 31, 2024, AES had no secured debt outstanding as a result of its receipt of an investment grade rating by Standard & Poor’s in November 2020. As a result, the collateral under the indenture governing our senior secured notes (such indenture, the “Secured Indenture”) and our senior credit facility were released from the liens securing our obligations thereunder. However, if at least two of Moody’s, Standard & Poor’s and Fitch cease to provide an investment grade rating to our long-term debt securities, and we were unable to obtain an investment grade rating by another ratings agency, the collateral reversion provisions in the Secured Indenture and our senior credit facility would require us to secure the indebtedness outstanding under these instruments with substantially the same collateral.

The notes are our obligations exclusively and are not the obligations of any of our subsidiaries or any entities we account for as equity method investments. Because we conduct our operations primarily through, and substantially all our consolidated assets are held by, our subsidiaries and entities we do not control, which include equity method investments, the notes will be effectively subordinated in right of payment to all existing and future indebtedness and other liabilities and any preferred equity of our subsidiaries. At March 31, 2024, our subsidiaries, excluding entities held for sale, had non-recourse debt of approximately $23.9 billion outstanding, to which the notes would be effectively subordinated in right of payment.

The Indenture will not limit the amount of Senior Indebtedness that may be incurred by AES or the amount of other indebtedness or liabilities that may be incurred by AES or any of its subsidiaries. For additional information, see “Risk Factors— Risks Related to the Notes—The notes are subordinated or effectively

S-29

subordinated to all other indebtedness of AES and its subsidiaries (other than any unsecured indebtedness AES may incur in the future that ranks junior to, or pari passu with, the notes), and the Indenture will not limit the aggregate amount of indebtedness that AES or its subsidiaries may incur” in this prospectus supplement and “Risk Factors—Risks Related to our Indebtedness and Financial Condition—The AES Corporation’s ability to make payments on its outstanding indebtedness is dependent upon the receipt of funds from our subsidiaries.” in our Annual Report on Form 10-K for the year ended December 31, 2023 incorporated by reference in this prospectus supplement and the accompanying prospectus.

Agreement by Holders to Tax Treatment

Each holder (and beneficial owner) of the notes will, by accepting any notes (or a beneficial interest therein), be deemed to have agreed that such holder (or beneficial owner) intends that the notes constitute indebtedness of AES, and will treat the notes as indebtedness of AES, for United States federal, state and local tax purposes.

Subordination

The notes will be subordinated in right of payment to the prior payment in full of all our Senior Indebtedness. This means that upon:

the holders of all of AES’s Senior Indebtedness will be entitled to receive:

before the holders of the notes are entitled to receive any payment. So long as any of the events in clauses (a), (b), or (c) above has occurred and is continuing, any amounts payable or assets distributable on the notes will instead be paid or distributed, as the case may be, directly to the holders of Senior Indebtedness to the extent necessary to pay, in the case of clause (a) above, all amounts due or to become due upon all such Senior Indebtedness, or, in the case of clauses (b) and (c) above, all amounts due on all such Senior Indebtedness, and, if any such payment or distribution is received by the Trustee under the Indenture or the holders of any of the notes before all Senior Indebtedness due and to become due or due, as applicable, is paid, such payment or distribution must be paid over to the holders of the unpaid Senior Indebtedness. Subject to paying the Senior Indebtedness due and to become due in the case of clause (a) or the Senior Indebtedness due in the case of clauses (b) and (c), the holders of the notes will be subrogated to the rights of the holders of the Senior Indebtedness to receive payments applicable to the Senior Indebtedness until the notes are paid in full.

“Senior Indebtedness” means, with respect to the notes, (i) indebtedness of AES, whether outstanding at the date of the Indenture or incurred, created or assumed after such date, (a) in respect of money borrowed by AES (including any financial derivative, hedging or futures contract or similar instrument, to the extent any such item is primarily a financing transaction) and (b) evidenced by debentures, bonds, notes, credit or loan agreements or other similar instruments or agreements issued or entered into by AES; (ii) all finance lease obligations of AES; (iii) all obligations of AES issued or assumed as the deferred purchase price of property, all conditional sale

S-30

obligations of AES and all obligations of AES under any title retention agreement (but excluding, for the avoidance of doubt, trade accounts payable arising in the ordinary course of business and long-term purchase obligations); (iv) all obligations of AES for the reimbursement of any letter of credit, banker’s acceptance, security purchase facility or similar credit transaction; and (v) all obligations of the type referred to in clauses (i) through (iv) above of other persons for the payment of which AES is responsible or liable as obligor, guarantor or otherwise, except for any obligations, instruments or agreements of the type referred to in any of clauses (i) through (v) above that, by the terms of the instruments or agreements creating or evidencing the same or pursuant to which the same is outstanding, are subordinated or equal in right of payment to the notes.

Due to the subordination of the notes, if assets of AES are distributed upon its dissolution, winding-up, liquidation or reorganization, holders of its Senior Indebtedness and other indebtedness and obligations that are not equal or junior to the notes in right of payment will likely recover more, ratably, than holders of the notes, and it is possible that no payments will be made to the holders of the notes. The subordination provisions described above will cease to apply in the event of defeasance or satisfaction and discharge of the notes as described under “—Defeasance and Discharge” and “—Satisfaction and Discharge,” respectively.

The notes and the Indenture do not limit our ability to incur Senior Indebtedness or our or any of our subsidiaries’ ability to incur other secured and unsecured indebtedness or liabilities or to issue preferred equity. We expect that we and our subsidiaries will incur substantial additional amounts of indebtedness, including Senior Indebtedness, in the future.

Redemption

Optional Redemption

We may redeem some or all of the notes, at our option, in whole or in part (i) on any day in the period commencing on the date falling 90 days prior to the First Reset Date and ending on and including the First Reset Date and (ii) after the First Reset Date, on any Interest Payment Date, at a redemption price in cash equal to 100% of the principal amount of the notes being redeemed, plus, subject to the terms described in the first paragraph under “—Redemption Procedures; Cancellation of Redemption” below, accrued and unpaid interest on the notes to be redeemed to, but excluding, the redemption date.

Redemption Following a Tax Event

We may at our option redeem the notes, in whole but not in part, at any time following the occurrence and during the continuance of a Tax Event (as defined below) at a redemption price in cash equal to 100% of the principal amount of the notes, plus, subject to the terms described in the first paragraph under “—Redemption Procedures; Cancellation of Redemption” below, accrued and unpaid interest on the notes to, but excluding, the redemption date.

A “Tax Event” means that we have received an opinion of counsel experienced in such matters to the effect that, as a result of:

S-31

which amendment, clarification or change is effective or the administrative action is taken or judicial decision, interpretation or pronouncement is issued or threatened challenge is asserted or becomes publicly-known after the date of this prospectus supplement, there is more than an insubstantial risk that interest payable by us on the notes is not deductible, or within 90 days would not be deductible, in whole or in part, by us for United States federal income tax purposes.

Redemption Following a Rating Agency Event

We may at our option redeem the notes, in whole but not in part, at any time following the occurrence and during the continuance of a Rating Agency Event (as defined below) at a redemption price in cash equal to 102% of the principal amount of the notes, plus, subject to the terms described in the first paragraph under “—Redemption Procedures; Cancellation of Redemption” below, accrued and unpaid interest on the notes to, but excluding, the redemption date.

“Rating Agency Event” means, as of any date, a change, clarification or amendment in the methodology published by any nationally recognized statistical rating organization within the meaning of Section 3(a)(62) of the Securities Exchange Act of 1934, as amended (or any successor provision thereto), that then publishes a rating for AES (together with any successor thereto, a “rating agency”) in assigning equity credit to securities such as the notes, (a) as such methodology was in effect on the date of this prospectus supplement, in the case of any rating agency that published a rating for AES as of the date of this prospectus supplement, or (b) as such methodology was in effect on the date such rating agency first published a rating for AES, in the case of any rating agency that first publishes a rating for AES after the date of this prospectus supplement (in the case of either clause (a) or (b), the “current methodology”), that results in (i) any shortening of the length of time for which a particular level of equity credit pertaining to the notes by such rating agency would have been in effect had the current methodology not been changed or (ii) a lower equity credit (including up to a lesser amount) being assigned by such rating agency to the notes as of the date of such change, clarification or amendment than the equity credit that would have been assigned to the notes by such rating agency had the current methodology not been changed.

Redemption Procedures; Cancellation of Redemption

Notwithstanding any statement under this caption “—Redemption” to the contrary, installments of interest on the notes that are due and payable on any Interest Payment Date falling on or prior to a redemption date for the notes will be payable on that Interest Payment Date to the registered holders thereof as of the close of business on the relevant Record Date according to the terms of the notes and the Indenture, except that, if the redemption date for any notes falls on any day during an Optional Deferral Period (as defined below under “—Option to Defer Interest Payments”), accrued and unpaid interest (including, to the extent permitted by applicable law, any compound interest (as defined below under “—Option to Defer Interest Payments”)) on such notes will be paid on such redemption date to the persons entitled to receive the redemption price of such notes. For the avoidance of doubt, the Interest Payment Date falling immediately after the last day of an Optional Deferral Period shall not be deemed to fall on a day during such Optional Deferral Period.

S-32

Notice of redemption will be mailed at least 10 days but not more than 60 days before the redemption date to each registered holder of the notes to be redeemed. Once notice of redemption is mailed, the notes called for redemption will become due and payable on the redemption date at the applicable redemption price, plus, subject to the terms described in the immediately preceding paragraph, accrued and unpaid interest to, but excluding, the redemption date, and will be paid upon surrender thereof for redemption, unless (a) the notice of redemption provides that such redemption shall be subject to the condition described in the next succeeding paragraph and (b) such redemption shall have been canceled in accordance with the provisions of the next succeeding paragraph because such condition shall not have been satisfied. If only part of a note is redeemed, the Trustee will issue in the name of the registered holder of the note and deliver to such holder a new note in a principal amount equal to the unredeemed portion of the principal of the note surrendered for redemption. If we elect to redeem all or a portion of the notes, then, unless otherwise provided in such notice of redemption as described in the next succeeding paragraph, the redemption will not be conditional upon receipt by the paying agent or the Trustee of monies sufficient to pay the redemption price.

If, at the time a notice of redemption is given, (i) we have not effected satisfaction and discharge or defeasance of the notes as described under “—Satisfaction and Discharge” or “—Defeasance and Discharge” and (ii) such notice of redemption is not being given in connection with or in order to effect satisfaction and discharge or defeasance of the notes, then, if the notice of redemption so provides and at our option, the redemption may be subject to the condition that the Trustee shall have received, on or before the applicable redemption date, monies in an amount sufficient to pay the redemption price and accrued and unpaid interest on the notes called for redemption to, but excluding, the redemption date. If monies in such amount are not received by the Trustee on or before such redemption date, such notice of redemption shall be automatically canceled and of no force or effect, such proposed redemption shall be automatically canceled and we shall not be required to redeem the notes called for redemption on such redemption date. In the event that a redemption is canceled, we will, not later than the business day immediately following the proposed redemption date, deliver, or cause to be delivered, notice of such cancellation to the registered holders of the notes called for redemption (which notice will also indicate that any notes or portions thereof surrendered for redemption shall be returned to the applicable holders), and we will direct the Trustee to, and the Trustee will, promptly return any notes or portions thereof that have been surrendered for redemption to the applicable holders.

In the case of a partial redemption, selection of the notes for redemption will be made pro rata, by lot or by such other method as the Trustee in its sole discretion deems appropriate and fair. No notes of a principal amount of $2,000 or less will be redeemed in part. If any note is to be redeemed in part only, the notice of redemption that relates to the note will state the portion of the principal amount of the note to be redeemed. A new note in a principal amount equal to the unredeemed portion of the note will be issued in the name of the holder of the note upon surrender for cancellation of the original note. For so long as the notes are held by DTC (or another depositary), the redemption of the notes shall be done in accordance with the policies and procedures of the depositary.

Unless we default in payment of the redemption price or the proposed redemption is canceled in accordance with the provisions set forth in the immediately preceding paragraph, on and after the redemption date interest will cease to accrue on the notes or portions thereof called for redemption.

Option to Defer Interest Payments

So long as no Event of Default (as defined below under “—Events of Default”) with respect to the notes has occurred and is continuing, we may, at our option, defer interest payments on the notes, from time to time, for one or more deferral periods of up to 20 consecutive Interest Payment Periods (as defined below) each (each such deferral period, commencing on the Interest Payment Date on which the first such deferred interest payment otherwise would have been made, an “Optional Deferral Period”), except that no such Optional Deferral Period may extend beyond the Final Maturity Date of the notes or end on a day other than the day immediately preceding an Interest Payment Date. During any Optional Deferral Period, interest on the notes will continue to

S-33

accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such Optional Deferral Period in accordance with the terms of the notes). In addition, during any Optional Deferral Period interest on the deferred interest (“compound interest”) will accrue at the then-applicable interest rate on the notes (as reset from time to time on any Reset Date occurring during such Optional Deferral Period in accordance with the terms of the notes), compounded semi-annually, to the extent permitted by applicable law. No interest will be due or payable on the notes during an Optional Deferral Period, except upon a redemption of any notes on any redemption date during such Optional Deferral Period (in which case all accrued and unpaid interest (including, to the extent permitted by applicable law, any compound interest) on the notes to be redeemed to, but excluding, such redemption date will be due and payable on such redemption date), or unless the principal of and interest on the notes shall have been declared due and payable as the result of an Event of Default with respect to the notes (in which case all accrued and unpaid interest, including, to the extent permitted by applicable law, any compound interest, on the notes shall become due and payable). All references in the notes and, insofar as relates to the notes, the Indenture, to “interest” on the notes shall be deemed to include any such deferred interest and, to the extent permitted by applicable law, any compound interest, unless otherwise expressly stated or the context otherwise requires.

Before the end of any Optional Deferral Period that is shorter than 20 consecutive Interest Payment Periods, we may elect, at our option, to extend such Optional Deferral Period, so long as the entire Optional Deferral Period does not exceed 20 consecutive Interest Payment Periods or extend beyond the Final Maturity Date of the notes. We may also elect, at our option, to shorten the length of any Optional Deferral Period. No Optional Deferral Period (including as extended or shortened) may end on a day other than the day immediately preceding an Interest Payment Date. At the end of any Optional Deferral Period, if all amounts then due on the notes, including all accrued and unpaid interest thereon (including, without limitation and to the extent permitted by applicable law, any compound interest), are paid, we may elect to begin a new Optional Deferral Period; provided, however, that, without limitation of the foregoing, we may not begin a new Optional Deferral Period unless we have paid all accrued and unpaid interest on the notes (including, without limitation and to the extent permitted by applicable law, any compound interest) from any previous Optional Deferral Periods.

During any Optional Deferral Period, we will not do any of the following (subject to the exceptions set forth in the next succeeding paragraph):

However, during an Optional Deferral Period, we may (a) declare and pay dividends or distributions payable solely in shares of our common stock (together, for the avoidance of doubt, with cash in lieu of any fractional share) or options, warrants or rights to subscribe for or purchase shares of our common stock, (b) declare and pay any dividend in connection with the implementation of a plan (a “Rights Plan”) providing for the issuance by us to all holders of our common stock of rights entitling them to subscribe for or purchase common stock or any class or series of our preferred stock, which rights (1) are deemed to be transferred with such common stock, (2) are not exercisable until the occurrence of a specified event or events and (3) are also issued in respect of future issuances of our common stock, (c) issue any of shares of our Capital Stock under any Rights Plan or redeem or repurchase any rights distributed pursuant to a Rights Plan, (d) reclassify our Capital Stock or exchange or convert one class or series of our Capital Stock for another class or series of our Capital Stock, (e) purchase fractional interests in shares of our Capital Stock pursuant to the conversion or exchange provisions of such Capital Stock or the security being converted or exchanged, (f) purchase, acquire or withhold shares of our common stock related to the issuance of our common stock or rights under any dividend reinvestment plan or

S-34

related to any of our benefit plans for our directors, officers, employees, consultants or advisors, including any employment contract, and (g) for the avoidance of doubt, convert convertible Capital Stock of AES into other Capital Stock of AES in accordance with the terms of such convertible Capital Stock (together, for the avoidance of doubt, with cash in lieu of any fractional share).

We will give the holders of the notes and the Trustee notice of our election of, or any shortening or extension of, an Optional Deferral Period at least 10 business days prior to the earlier of (1) the next succeeding Interest Payment Date or (2) the date upon which we are required to give notice to any applicable self-regulatory organization or to holders of the notes of the next succeeding Interest Payment Date or the Record Date therefor. The Record Date for the payment of deferred interest and, to the extent permitted by applicable law, any compound interest payable on the Interest Payment Date immediately following the last day of an Optional Deferral Period will be the regular Record Date with respect to such Interest Payment Date.

“Capital Stock” means (i) in the case of a corporation or a company, corporate stock or shares; (ii) in the case of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however designated) of corporate stock; (iii) in the case of a partnership or limited liability company, partnership or membership interests (whether general or limited); and (iv) any other interest or participation that confers on a person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing person.

“Interest Payment Period” means the semi-annual period from and including an Interest Payment Date to but excluding the next succeeding Interest Payment Date, except for the first Interest Payment Period which shall be the period from and including the Original Issue Date to but excluding  , 20  .

Events of Default

An “Event of Default” occurs with respect to the notes if:

If an Event of Default with respect to the notes specified in clause (a) or (b) above occurs and is continuing, the Trustee or the holders of at least 33% in aggregate principal amount of the notes may, by written notice to us, and the Trustee at the request of at least 33% in aggregate principal amount of notes will, declare the principal, premium, if any, and accrued interest on the notes (including, without limitation, any deferred interest and, to the extent permitted by applicable law, any compound interest) to be immediately due and payable (notwithstanding any deferral of interest payments in accordance with the provisions discussed above under “—Option to Defer Interest Payments”). Upon declaration of acceleration, the principal, premium, if any, and accrued interest on the notes shall be immediately due and payable.

S-35

If an Event of Default described in clause (c) above occurs and is continuing, neither the Trustee nor the holders of the notes will be entitled to declare the principal, premium, if any, or accrued interest on the notes, to be immediately due and payable. See “Risk Factors—Holders of the notes will have limited rights of acceleration.” However, they may exercise the other rights and remedies available under the Indenture upon the occurrence of such an Event of Default.

If an Event of Default specified in clause (d) above occurs, the principal, premium, if any, and accrued interest on the notes shall be immediately due and payable, without any declaration or other act on the part of the Trustee or any holder.

If, at any time after the principal of the notes shall have become due and payable and before any judgment for payment shall have been obtained or entered, the holders of at least a majority in principal amount of the notes issued under the Indenture that have been accelerated (voting as a single class), by written notice to us and to the Trustee, may waive all past defaults with respect to the notes and rescind and annul a declaration of acceleration with respect to the notes if:

For information as to the waiver of defaults, see “—Modification and Waiver.”

Subject to certain conditions, the holders of at least a majority in principal amount of debt securities of each series issued under the Indenture that are affected (voting as a single class) may direct the time, method, and place of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on the Trustee with respect to the notes. However, the Trustee may refuse to follow any direction that conflicts with law or the Indenture, that may involve the Trustee in personal liability, or that the Trustee determines in good faith may be unduly prejudicial to the rights of holders of debt securities of such series who did not join in giving that direction, and the Trustee may take any other action it deems proper that is not inconsistent with the direction received from holders of outstanding debt securities of such series.

A holder of the notes of a series may not pursue any remedy with respect to the Indenture unless:

However, these limitations do not apply to the right of any holder of the notes to receive payment of the principal, premium, if any, or interest on, the notes or to bring suit for the enforcement of any payment, on or after the due date expressed in the notes, which right shall not be impaired or affected without the consent of the holder.

S-36

The Indenture requires that certain of our officers certify, on or before a date not more than four months after the end of each fiscal year, that to the best of those officers’ knowledge, we have fulfilled all our obligations under the Indenture. We are also obligated to notify the Trustee of any default or defaults in the performance of any covenants or agreements under the Indenture.

Modification and Waiver

The Indenture may be amended or supplemented without the consent of any holder of the notes of a series to:

Other modifications and amendments of the Indenture may be made with the consent of the holders of not less than a majority in principal amount of the outstanding debt securities of each series affected by the amendment (all such series voting as a separate class). However, no modification or amendment may, without the consent of each holder affected:

A supplemental indenture which changes or eliminates any covenant or other provision of the Indenture which has expressly been included solely for the benefit of one or more particular series of the debt securities issued under the Indenture, or which modifies the rights of holders of the debt securities of that series with respect to that covenant or provision, shall be deemed not to affect the rights under the Indenture of the holders of the debt securities of any other series issued under the Indenture or of the coupons appertaining to those debt securities. It is not necessary for the consent of the holders under this section of the Indenture to approve the particular form of any proposed amendment, supplement, or waiver, but it is sufficient if the consent approves the substance thereof.

After an amendment, supplement, or waiver under this section of the Indenture becomes effective, we will give to the holders affected thereby a notice briefly describing the amendment, supplement, or waiver. We will mail supplemental indentures to holders upon request. Any failure of us to mail a notice, or any defect therein, will not affect the validity of any supplemental indenture or waiver.

S-37

Restriction on Mergers, Consolidations and Sales of Assets

Pursuant to the Indenture, we may not consolidate with, merge with or into, or transfer all or substantially all of our assets to any Person unless:

Reports

We will covenant to deliver to the Trustee, within 15 days after we are required to file the same with the SEC, copies of the annual reports and of the information, documents, and other reports which we may be required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act.

Satisfaction and Discharge

The Indenture will at our request be discharged and will cease to be of further effect (except for, among other matters, certain obligations to register the transfer or exchange of notes, to replace stolen, lost or mutilated notes, to maintain paying agencies and to hold monies for payment in trust) as to all the notes of any series outstanding, when:

S-38

Defeasance and Discharge

The Indenture provides that we are deemed to have paid and will be discharged from all obligations in respect of the notes of any series on the 123rd day after the deposit referred to below has been made, and that the provisions of the Indenture will no longer be in effect with respect to the notes of such series (except for, among other matters, certain obligations to register the transfer or exchange of notes, to replace stolen, lost or mutilated notes, to maintain paying agencies and to hold monies for payment in trust) if, among other things:

Defeasance of Certain Obligations

The indenture provides that we may make the same type of deposit referred to above under “—Defeasance and Discharge” and be released from certain restrictive covenants in the notes of any series, including the covenants described above under “—Restriction on Mergers, Consolidations and Sales of Assets” and “—Reports”, and clause (3) described above under “—Events of Default” shall no longer be deemed Events of Default, if:

S-39

Book-Entry, Delivery and Form

Except as set forth below, each series of notes will be issued in registered, global form in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000.

Each series of notes initially will be represented by one or more notes in registered, global form without interest coupons (collectively, the “Global Notes”). The Global Notes will be deposited upon issuance with the Trustee as custodian for DTC, and registered in the name of DTC or its nominee, in each case for credit to an account of a direct or indirect participant in DTC as described below.

Except as set forth below, the Global Notes may be transferred, in whole and not in part, only to another nominee of DTC or to a successor of DTC or its nominee. Beneficial interests in the Global Notes may not be exchanged for notes in certificated form (“Certificated Notes”) except in the limited circumstances described below. See “—Depositary Procedures-Exchange of Global Notes for Certificated Notes” below.

In addition, transfers of beneficial interests in the Global Notes will be subject to the applicable rules and procedures of DTC and its direct or indirect participants (including, if applicable, those of Euroclear and Clearstream), which may change from time to time.

Depositary Procedures

The following description of the operations of DTC, Euroclear and Clearstream are provided solely as a matter of convenience. These operations and procedures are solely within the control of the respective settlement systems and are subject to changes by them. We and the Trustee take no responsibility for these operations and procedures and urge you to contact the system or their participants directly to discuss these matters.

DTC has advised us that it is a limited-purpose trust company created to hold securities for its participating organizations (collectively, the “Participants”) and to facilitate the clearance and settlement of transactions in those securities between Participants through electronic book-entry changes in accounts of its Participants. The Participants include securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations. Access to DTC’s system is also available to other entities such as banks, brokers, dealers and trust companies that maintain a custodial relationship with a Participant, either directly or indirectly (collectively, the “Indirect Participants”).

S-40

Persons who are not Participants may beneficially own securities held by or on behalf of DTC only through Participants or the Indirect Participants. The ownership of interests in, and transfers of ownership interests in, each security held by or on behalf of DTC are recorded on the records of the Participants and the Indirect Participants.

DTC has also advised us that, pursuant to procedures established by it, ownership of interests in the Global Notes will be shown on, and the transfer of ownership of these interests will be effected only through, records maintained by DTC (with respect to the Participants) or by the Participants and the Indirect Participants (with respect to other owners of beneficial interest in the Global Notes).

Investors in the Global Notes who are Participants in DTC’s system may hold their interests therein directly through DTC. Investors in the Global Notes that are not Participants may hold their interests indirectly through organizations (including Euroclear and Clearstream) which are Participants in such system. Euroclear and Clearstream will hold interests in the Global Notes on behalf of their participants through customers’ securities accounts in their respective names on the books of their respective depositaries. All interests in a Global Note, including those held through Euroclear or Clearstream, may be subject to the procedures and requirements of DTC. Those interests held through Euroclear or Clearstream may also be subject to the procedures and requirements of such systems. The laws of some states require that certain persons take physical delivery in definitive form of securities they own. Consequently, the ability to transfer beneficial interests in a Global Note to such persons will be limited to that extent. Because DTC can act only on behalf of Participants, which in turn act on behalf of Indirect Participants, the ability of a person having beneficial interests in a Global Note to pledge such interests to persons that do not participate in the DTC system, or otherwise take actions in respect of such interests, may be affected by the lack of a physical certificate evidencing such interests.

Except as described below, owners of interests in the Global Notes will not have notes registered in their name, will not receive physical delivery of notes in certificated form and will not be considered the registered owners or “holders” thereof under the Indenture for any purpose.

Payments in respect of the principal of, and interest (including additional interest) and premium, if any, on a Global Note registered in the name of DTC or its nominee will be payable to DTC in its capacity as the registered holder under the Indenture. Under the terms of the Indenture, we and the Trustee will treat the persons in whose names the Notes, including the Global Notes, are registered as the owners of the notes for the purpose of receiving payments and all other purposes. Consequently, neither we, the Trustee nor any agent of us or the Trustee has or will have any responsibility or liability for:

DTC has advised us that its current practice, upon receipt of any payment in respect of securities such as the notes (including principal and interest), is to credit the accounts of the relevant Participants with the payment on the payment date unless DTC has reason to believe it will not receive payment on such payment date. Each relevant Participant is credited with an amount proportionate to its beneficial ownership of an interest in the principal amount of the relevant security as shown on the records of DTC. Payments by the Participants and the Indirect Participants to the beneficial owners of notes will be governed by standing instructions and customary practices and will be the responsibility of the Participants or the Indirect Participants and will not be the responsibility of DTC, the Trustee or us. Neither we nor the Trustee will be liable for any delay by DTC or any of its Participants in identifying the beneficial owners of the notes, and we and the Trustee may conclusively rely on and will be protected in relying on instructions from DTC or its nominee for all purposes.

S-41

Transfers between Participants in DTC will be effected in accordance with DTC’s procedures, and will be settled in same-day funds, and transfers between Participants in Euroclear and Clearstream will be effected in accordance with their respective rules and operating procedures.

Cross-market transfers between the Participants in DTC, on the one hand, and Euroclear or Clearstream participants, on the other hand, will be effected through DTC in accordance with DTC’s rules on behalf of Euroclear or Clearstream, as the case may be, by its respective depositary; however, such cross-market transactions will require delivery of instructions to Euroclear or Clearstream, as the case may be, by the counter-party in such system in accordance with the rules and procedures and within the established deadlines (Brussels time) of such system. Euroclear or Clearstream, as the case may be, will, if the transaction meets the settlement requirements, deliver instructions to its respective depositary to take action to effect final settlement on its behalf by delivering or receiving interests in the relevant Global Note in DTC, and making or receiving payment in accordance with normal procedures for same day fund settlement applicable to DTC. Euroclear participants and Clearstream participants may not deliver instructions directly to the depositaries for Euroclear or Clearstream.

DTC has advised us that it will take any action permitted to be taken by a holder of notes only at the direction of one or more Participants to whose account DTC has credited the interests in the Global Notes and only in respect of such portion of the aggregate principal amount of the notes as to which such Participant or Participants has or have given such direction. However, if there is an Event of Default under the notes, DTC reserves the right to exchange the Global Notes for legended notes in certificated form, and to distribute such notes to its Participants.

Although DTC, Euroclear and Clearstream have agreed to the foregoing procedures to facilitate transfers of interests in the Global Notes among participants in DTC, Euroclear and Clearstream, they are under no obligation to perform or to continue to perform such procedures, and may discontinue such procedures at any time. Neither we nor the Trustee nor any of our respective agents will have any responsibility for the performance by DTC, Euroclear or Clearstream or their respective participants or indirect participants of their respective obligations under the rules and procedures governing their operations.

Exchange of Global Notes for Certificated Notes

A Global Note is exchangeable for Certificated Notes if:

In addition, beneficial interests in a Global Note may be exchanged for Certificated Notes upon prior written notice given to the Trustee by or on behalf of DTC in accordance with the Indenture. In all cases, Certificated Notes delivered in exchange for any Global Note or beneficial interests in Global Notes will be registered in the names, and issued in any approved denominations, requested by or on behalf of the depositary (in accordance with its customary procedures).

Same Day Settlement and Payment

We will make payments in respect of the notes represented by the Global Notes (including principal, premium, if any, and interest) through the paying agent by wire transfer of immediately available funds to the

S-42

accounts specified by the Global Note holder. We will make all payments of principal, interest and premium, if any, with respect to Certificated Notes through the paying agent by wire transfer of immediately available funds to the accounts specified by the holders thereof or, if no account is specified, by mailing a check to that holder’s registered address. The notes represented by the Global Notes are expected to trade in DTC’s Same Day Funds Settlement System, and any permitted secondary market trading activity in the notes will, therefore, be required by DTC to be settled in immediately available funds. We expect that secondary trading in any Certificated Notes will also be settled in immediately available funds.

Because of time zone differences, the securities account of a Euroclear or Clearstream participant purchasing an interest in a Global Note from a Participant in DTC will be credited, and any crediting of this type will be reported to the relevant Euroclear or Clearstream participant, during the securities settlement processing day (which must be a business day for Euroclear and Clearstream) immediately following the settlement date of DTC. DTC has advised us that cash received in Euroclear or Clearstream as a result of sales of interests in a Global Note by or through a Euroclear or Clearstream participant to a Participant in DTC will be received with value on the settlement date of DTC but will be available in the relevant Euroclear or Clearstream cash account only as of the business day for Euroclear or Clearstream following DTC’s settlement date.

Governing Law

The Indenture and notes will be governed by and construed in accordance with the laws of the State of New York.

Information Concerning the Trustee

AES and its subsidiaries may maintain deposit accounts and conduct other banking transactions with the Trustee in the ordinary course of business.

S-43

U.S. FEDERAL INCOME TAX CONSEQUENCES

The following are the material U.S. federal income tax consequences of ownership and disposition of the notes. This discussion applies only to notes that meet both of the following conditions:

This discussion does not describe all aspects of U.S. federal income taxes and does not deal with all of the tax consequences that may be relevant to holders in light of their particular circumstances or to holders subject to special rules such as:

If an entity or arrangement treated as a partnership for U.S. federal income tax purposes holds notes, the U.S. federal income tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership. Partners of partnerships holding notes should consult their tax advisors as to the particular U.S. federal income tax consequences to them of holding and disposing of the notes.

This summary is based on the Code, administrative pronouncements, judicial decisions and final, temporary and proposed U.S. Treasury Regulations in effect as of the date hereof, changes to any of which subsequent to the date of this prospectus supplement may affect the tax consequences described herein, possibly with retroactive effect.

This summary addresses only U.S. federal income tax consequences. Persons considering the purchase of notes should consult their tax advisors with regard to the application of the U.S. federal income or other federal tax laws (including estate and gift tax laws and the Medicare tax on investment income) to their particular situations as well as any tax consequences arising under the laws of any state, local or foreign taxing jurisdiction.

Classification of the Notes

The determination of whether a security should be classified as indebtedness or equity for U.S. federal income tax purposes requires a judgment based on all relevant facts and circumstances. There is no statutory, judicial or administrative authority that directly addresses the U.S. federal income tax treatment of securities similar to the notes. In the opinion of Davis Polk & Wardwell LLP, under current law and based on the facts contained in this prospectus supplement, the terms of the indenture and the notes, and such assumptions and representations of the Company and its officers and other representatives as are customary for transactions similar in nature to those described in this prospectus supplement and which were relied upon in rendering this opinion, the notes should be classified for U.S.

S-44

federal income tax purposes as indebtedness (although there is no controlling authority directly on point). The opinion of Davis Polk & Wardwell LLP is not binding on the Internal Revenue Service (the “IRS”) or the courts. Moreover, no rulings have been or will be sought from the IRS with respect to the transactions described in this prospectus supplement. Accordingly, we cannot assure holders that the IRS will not challenge the opinion described herein or that a court would not sustain such a challenge. If the IRS were to successfully challenge the classification of the notes as indebtedness, interest payments on the notes would be treated for U.S. federal income tax purposes as dividends to the extent of our current or accumulated earnings and profits. In the case of Non-U.S. Holders (as defined below), interest payments treated as dividends would be subject to withholding of United States income tax, except to the extent provided by an applicable income tax treaty. In addition, such a determination would constitute a Tax Event that would entitle us to redeem the notes as described under “Description of the Notes—Redemption—Redemption Following a Tax Event.” We agree, and by acquiring an interest in a note, each holder of a note will agree, to treat the notes as indebtedness for U.S. federal income tax purposes, and the remainder of this discussion assumes such treatment. Holders should consult their tax advisors regarding the tax consequences that would apply if the notes are not treated as indebtedness for U.S. federal income tax purposes.

Tax Consequences to U.S. Holders

As used herein, the term “U.S. Holder” means a beneficial owner of a note that is, for U.S. federal income tax purposes:

Payments of Interest

The notes should be treated as “variable rate debt instruments” for U.S. federal income tax purposes. If the notes were not treated as variable rate debt instruments, then the notes would be treated as “contingent payment debt instruments,” in which case U.S. Holders could be required to accrue interest income on the notes in excess of stated interest and would be required to treat as ordinary income rather than as capital gain any income realized on a taxable disposition of the notes. Applicable Treasury Regulations set forth rules to determine whether a variable rate debt instrument is treated as issued with original issue discount for U.S. federal income tax purposes (“OID”). Based on the application of these Treasury Regulations and the expected pricing terms of the notes, we do not expect the pricing of the notes to result in the notes as being treated as issued with OID. We have the option under certain circumstances to defer payments of stated interest on the notes. Under the Treasury Regulations relating to OID, a debt instrument is deemed to be issued with OID if there is more than a “remote” contingency that periodic stated interest payments due on the instrument will not be timely paid. We believe the likelihood of our exercising the option to defer payment of stated interest on the notes is remote within the meaning of the Treasury Regulations in part because our exercise of the option to defer payments of stated interest on the notes would generally prevent us from:

S-45

Similarly, if certain circumstances occur (see “Description of the Notes—Redemption—Redemption Following a Rating Agency Event”), we will be obligated to pay amounts in excess of stated principal on the notes. If there is only a remote likelihood that such payments will be made, such excess payments will not affect the amount of interest income that a U.S. Holder recognizes. We believe the likelihood that we will make any such payments is remote within the meaning of the Treasury Regulations.

Based on these positions, a U.S. Holder should generally be required to recognize any stated interest as ordinary income at the time it is received or accrued on the notes in accordance with such holder’s regular method of accounting for United States federal income tax purposes.

Our determination that the contingencies described above are remote is binding on a U.S. Holder unless such holder discloses its contrary position in the manner required by applicable Treasury Regulations. Our determination is not, however, binding on the IRS. There can be no assurance that the IRS or a court will agree with these positions. The meaning of the term “remote” in the Treasury Regulations has not yet been addressed in any rulings or other guidance by the IRS or any court. If the possibility of interest deferral were determined not to be remote, the notes would be treated as issued with OID and all stated interest would be treated as OID as long as the notes are outstanding. In that case, U.S. Holders would be required to accrue interest income on the notes using a constant yield method whether or not they receive any cash payment attributable to that interest, regardless of their regular method of accounting for U.S. federal income tax purposes.

Moreover, if the possibility of excess payments following a Rating Agency Event were determined not to be remote, the notes could be treated as “contingent payment debt instruments,” in which case U.S. Holders could be required to accrue interest income on the notes in excess of stated interest and would be required to treat as ordinary income rather than as capital gain any income realized on a taxable disposition of the notes, as described above.

The remainder of this discussion assumes the notes will not be treated as issued with OID or as contingent payment debt instruments.

Exercise of Deferral Option

Under the Treasury Regulations, if we exercise our option to defer the payment of interest on the notes, the notes will be treated as if they had been redeemed and reissued solely for OID purposes. In that event, all remaining interest payments on the notes (including interest on deferred interest) would be treated as OID, which U.S. Holders would be required to accrue and include in taxable income, without regard to such U.S. Holders’ regular method of accounting for U.S. federal income tax purposes. The amount of OID income includible in such U.S. Holders’ taxable income would be determined on the basis of a constant yield method over the remaining term of the notes, and the actual receipt of future payments of stated interest on the notes would no longer be separately reported as taxable income. The total amount of OID that would accrue during the deferral period would be approximately equal to the amount of the cash payment due immediately following the end of that period. A U.S. Holder’s adjusted tax basis in its notes would be increased by any OID included in the U.S. Holder’s income and decreased by the actual receipt of cash interest payments on the notes.

Sale, Exchange or Retirement of the Notes

Upon the sale, exchange or retirement of a note that is a taxable disposition, a U.S. Holder will recognize taxable gain or loss equal to the difference between the amount realized on such sale, exchange or retirement and the U.S. Holder’s adjusted tax basis in the note, which will generally equal the cost of the note. For these purposes, the amount realized does not include any amount attributable to accrued interest. Amounts attributable

S-46

to accrued interest are treated as interest as described under “Payments of Interest” above. If the notes are treated as having been issued or reissued with OID, such adjusted tax basis will also be increased by the amount of any OID previously included in a U.S. Holder’s gross income with respect to the notes and decreased by any payments received on the notes since and including the date that the notes were deemed to be issued with OID.

Gain or loss realized on the sale, exchange or retirement of a note will generally be capital gain or loss and will be long-term capital gain or loss if at the time of sale, exchange or retirement the note has been held for more than one year. The deductibility of capital losses is subject to limitations.

Backup Withholding and Information Reporting

Information returns generally will be filed with the IRS in connection with payments on the notes (including OID) and the proceeds from a sale or other disposition of the notes. A U.S. Holder will be subject to backup withholding on these payments if the U.S. Holder fails to provide its correct taxpayer identification number to the applicable withholding agent and comply with certain certification procedures or otherwise establish an exemption from backup withholding. Backup withholding is not an additional tax. The amount of any backup withholding from a payment to a U.S. Holder will be allowed as a credit against the U.S. Holder’s U.S. federal income tax liability and may entitle the U.S. Holder to a refund, provided that the required information is timely furnished to the IRS.

Tax Consequences to Non-U.S. Holders

As used herein, the term “Non-U.S. Holder” means a beneficial owner of a note that is, for U.S. federal income tax purposes:

The term “Non-U.S. Holder” does not include a beneficial owner who is an individual present in the United States for 183 days or more in the taxable year of disposition or who is (or may become while holding notes) a former citizen or resident of the United States. Such a beneficial owner should consult his or her own tax advisor regarding the U.S. federal income tax consequences of the sale, exchange or other disposition of a note.

Payments on the Notes

Subject to the discussions below concerning backup withholding and FATCA (as defined below), payments of principal, interest (including any OID) and premium on the notes to a Non-U.S. Holder generally will not be subject to U.S. federal income or withholding tax, provided that, in the case of interest:

Subject to the discussion below concerning income of a Non-U.S. Holder that is effectively connected with the conduct of a trade or business in the United States, if a Non-U.S. Holder cannot satisfy the requirements described above, payments of interest on the notes to such Non-U.S. Holder will generally be subject to U.S. federal withholding tax at a rate of 30%, unless the Non-U.S. Holder provides the applicable withholding agent

S-47

with a properly executed IRS Form W-8 appropriate to the Non-U.S. Holder’s circumstances claiming an exemption from or reduced rate of withholding under an applicable income tax treaty and complies with any other applicable procedures. See the discussion below under “FATCA” regarding withholding on interest under the FATCA rules.

Sale, Exchange or Retirement of the Notes

A Non-U.S. Holder of a note will not be subject to U.S. federal income tax on gain realized on the sale, exchange or retirement of such note, unless the gain is effectively connected with the conduct by the Non-U.S. Holder of a trade or business in the United States, subject to an applicable income tax treaty providing otherwise, although any amounts attributable to accrued interest will generally be treated as described above under “Payments on the Notes.” See the discussion below under “FATCA” regarding withholding under the FATCA rules on gross proceeds of the sale, exchange or retirement of the notes.

Non-U.S. Holder Engaged in a U.S. Trade or Business

If a Non-U.S. Holder of a note is engaged in a trade or business in the United States, and if income or gain on the note is effectively connected with the conduct of this trade or business (and if required by an applicable income tax treaty, the income or gain is attributable to a permanent establishment or fixed base maintained by the Non-U.S. Holder in the United States), the Non-U.S. Holder, although exempt from the withholding tax on interest discussed above, will generally be taxed in the same manner as a U.S. Holder (see “Tax Consequences to U.S. Holders” above), except that the Non-U.S. Holder will be required to provide to the applicable withholding agent a properly executed IRS Form W-8ECI in order to claim an exemption from withholding tax on interest. These Non-U.S. Holders should consult their tax advisors with respect to other U.S. tax consequences of the ownership and disposition of notes, including, in the case of a corporation, the possible imposition of a branch profits tax at a rate of 30% (or a lower rate under an applicable income tax treaty).

Backup Withholding and Information Reporting

Information returns generally will be filed with the IRS in connection with interest payments on the notes. Copies of the information returns reporting such interest payments and any withholding may also be made available to the tax authorities in the country in which the Non-U.S. Holder resides under the provisions of an applicable income tax treaty. Unless the Non-U.S. Holder complies with certification procedures to establish that it is not a United States person, information returns may be filed with the IRS in connection with the proceeds from a sale or other disposition of the notes, and the Non-U.S. Holder may be subject to backup withholding on payments on the notes or on the proceeds from a sale or other disposition of the notes. Compliance with the certification procedures required to claim the exemption from withholding tax on interest described above will satisfy the certification requirements necessary to avoid backup withholding as well. Backup withholding is not an additional tax. The amount of any backup withholding from a payment to a Non-U.S. Holder will be allowed as a credit against the Non-U.S. Holder’s U.S. federal income tax liability and may entitle the Non-U.S. Holder to a refund, provided that the required information is furnished to the IRS.

FATCA

Provisions in the Code and the U.S. Treasury Regulations promulgated thereunder, commonly referred to as “FATCA,” generally impose a withholding tax of 30% on payments to certain non-U.S. entities (including financial intermediaries) with respect to certain financial instruments, unless various U.S. information reporting and due diligence requirements have been satisfied. An intergovernmental agreement between the United States and the non-U.S. entity’s jurisdiction may modify these requirements. Withholding under these rules (if applicable) applies to payments of interest on the notes (including any OID) and to payments of gross proceeds of the sale, exchange or retirement of the notes. However, under proposed U.S. Treasury Regulations (the preamble to which specifies that taxpayers are permitted to rely on them pending finalization), no withholding will apply on payments of gross proceeds. Non-U.S. Holders, and U.S. Holders holding notes through a non-U.S. intermediary, should consult their tax advisors regarding the potential application of FATCA to the notes.

S-48

UNDERWRITING

Subject to the terms and conditions stated in the underwriting agreement between us and Citigroup Global Markets Inc., Goldman Sachs & Co. LLC, Mizuho Securities USA LLC, Morgan Stanley & Co. LLC and SMBC Nikko Securities America, Inc., as representatives of the underwriters named below, each of the underwriters has severally agreed to purchase, and we have agreed to sell to each underwriter, the aggregate principal amount of notes set forth opposite such underwriter’s name below.

The underwriting agreement provides that the obligations of the underwriters to purchase the notes included in this offering are subject to approval of legal matters by counsel and to other conditions. The underwriters are obligated to purchase all notes if they purchase any notes.

The underwriters propose to offer some of the notes of each series directly to the public at the applicable public offering price set forth on the cover page of this prospectus supplement and some of the notes of each series to dealers at the applicable public offering price. After the initial offering of the notes of the applicable series to the public, the underwriters may change the related public offering prices and concessions. The offering of the notes by the underwriters is subject to receipt and acceptance of the notes and subject to the underwriters’ right to reject any order in whole or in part.

Discounts and Commissions

The notes sold by the underwriters to the public will initially be offered at the initial public offering price set forth on the cover of this prospectus supplement. Any notes sold by the underwriters to securities dealers may be sold at a price that represents a concession not in excess of    % of the principal amount of the notes. Any such securities dealers may resell notes to certain other dealers at a price that represents a concession of not more than    % of the principal amount of the notes. If all the notes are not sold at the initial public offering price, the representatives may change the offering price and the other selling terms.

The following table shows the underwriting discounts to be received by the underwriters in connection with this offering:

The notes are new issues of securities with no established trading markets. We have been advised by the underwriters that the underwriters intend to make a market of the notes but they are not obligated to do so and may discontinue market making with respect to the notes at any time without notice. No assurance can be given as to the liquidity of any public trading markets for the notes or the development or continuation of such trading markets.

In connection with this offering, the underwriters may purchase and sell notes in the open market. These transactions may include over-allotment, syndicate covering transactions and stabilizing transactions. Over-allotment involves syndicate sales of notes of a series in excess of the aggregate principal amount of notes of

S-49

such series to be purchased by the underwriters in this offering, which creates a syndicate short position. Syndicate covering transactions involve purchases of the notes in the open market after the distribution has been completed in order to cover syndicate short positions. Stabilizing transactions consist of certain bids or purchases of notes made for the purpose of preventing or retarding a decline in the market prices of the notes while this offering is in progress.

Any of these activities may have the effect of preventing or retarding a decline in the market prices of the notes. They may also cause the prices of the notes to be higher than the prices that otherwise would exist in the open market in the absence of these transactions. The underwriters may conduct these transactions in the over-the-counter market or otherwise. If the underwriters commence any of these transactions, they may discontinue them at any time.

The underwriters also may impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the representatives have repurchased notes sold by or for the account of such underwriter in stabilizing or short covering transactions.

We estimate that our total expenses for this offering, excluding underwriting discounts, will be approximately $    .

We have agreed to indemnify the several underwriters against certain liabilities, including liabilities under the Securities Act, or to contribute to payments the underwriters may be required to make because of any of those liabilities.

The underwriters and their respective affiliates are full-service financial institutions engaged in various activities, which may include sales and trading, commercial and investment banking, advisory, investment management, investment research, principal investment, hedging, market making, brokerage and other financial and non-financial activities and services. Certain of the underwriters and their respective affiliates have, from time to time, performed, and may in the future perform, various financial advisory, cash management, investment banking, commercial banking and general financing services for us and our affiliates in the ordinary course of business for which they have received, or may receive, customary fees and expenses. Affiliates of certain of the underwriters are agents and/or lenders under our revolving credit facility.

In the ordinary course of their various business activities, the underwriters and their respective affiliates, officers, directors and employees may purchase, sell or hold a broad array of investments including serving as counterparties to certain derivative and hedging arrangements and actively trade securities, derivatives, loans, commodities, currencies, credit default swaps and other financial instruments for their own account and for the accounts of their customers, and such investment and trading activities may involve or relate to our assets, securities and/or instruments (directly, as collateral securing other obligations or otherwise) and/or persons and entities with relationships with us. Certain of the underwriters or their affiliates have a lending relationship with us. Certain of those underwriters or their affiliates routinely hedge, certain other underwriters or their affiliates have hedged and are likely to hedge and certain other underwriters or their affiliates may hedge, their credit exposure to us consistent with their customary risk management policies. Typically, such underwriters and their affiliates would hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of short positions in our securities, including potentially the notes offered hereby. Any such credit default swaps or short positions could adversely affect future trading prices of the notes offered hereby. The underwriters and their respective affiliates may also communicate independent investment recommendations, market color or trading ideas and/or publish or express independent research views in respect of such assets, securities or instruments and may at any time hold, or recommend to clients that they should acquire, long and/or short positions in such assets, securities and instruments.

S-50

Selling Restrictions

Canada

The notes may be sold only to purchasers purchasing, or deemed to be purchasing, as principals that are accredited investors, as defined in National Instrument 45-106 Prospectus Exemptions or subsection 73.3(1) of the Securities Act (Ontario), and are permitted clients, as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations. Any resale of the notes must be made in accordance with an exemption from, or in a transaction not subject to, the prospectus requirements of applicable securities laws.

Securities legislation in certain provinces or territories of Canada may provide a purchaser with remedies for rescission or damages if this prospectus supplement and the accompanying prospectus (including any amendment thereto) contain a misrepresentation, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser’s province or territory. The purchaser should refer to any applicable provisions of the securities legislation of the purchaser’s province or territory for particulars of these rights or consult with a legal advisor.

Pursuant to section 3A.3 of National Instrument 33-105 Underwriting Conflicts (NI 33-105), the underwriters are not required to comply with the disclosure requirements of NI 33-105 regarding underwriter conflicts of interest in connection with this offering.

European Economic Area

The notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the European Economic Area (“EEA”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client as defined in point (11) of Article 4(1) of Directive 2014/65/EU (as amended, “MiFID II”); or (ii) a customer within the meaning of Directive (EU) 2016/97 (as amended, the “Insurance Distribution Directive”), where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or (iii) not a qualified investor as defined in Regulation (EU) 2017/1129 (the “Prospectus Regulation”). Consequently no key information document required by Regulation (EU) No 1286/2014 (as amended, the “PRIIPs Regulation”) for offering or selling the notes or otherwise making them available to retail investors in the EEA has been prepared and therefore offering or selling the notes or otherwise making them available to any retail investor in the EEA may be unlawful under the PRIIPs Regulation.

United Kingdom

The notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the United Kingdom (“U.K.”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client, as defined in point (8) of Article 2 of Regulation (EU) No 2017/565 as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018 (“EUWA”); (ii) a customer within the meaning of the provisions of the Financial Services and Markets Act 2000 (“FSMA”) and any rules or regulations made under the FSMA to implement Directive (EU) 2016/97, where that customer would not qualify as a professional client, as defined in point (8) of Article 2(1) of Regulation (EU) No 600/2014 as it forms part of domestic law by virtue of the EUWA; or (iii) not a qualified investor as defined in Article 2 of Regulation (EU) 2017/1129 as it forms part of domestic law by virtue of the EUWA. Consequently no key information document required by Regulation (EU) No 1286/2014 as it forms part of domestic law by virtue of the EUWA (the “U.K. PRIIPs Regulation”) for offering or selling the notes or otherwise making them available to retail investors in the U.K. has been prepared and therefore offering or selling the notes or otherwise making them available to any retail investor in the U.K. may be unlawful under the U.K. PRIIPs Regulation.

S-51

Hong Kong

The notes have not been and will not be offered or sold in Hong Kong Special Administrative Region of the People’s Republic of China (“Hong Kong”) by means of any document other than (i) in circumstances which do not constitute an offer to the public within the meaning of the Companies (Winding Up and Miscellaneous Provisions) Ordinance (Cap.32, Laws of Hong Kong) (the “CO”), or (ii) to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap.571, Laws of Hong Kong) (the “SFO”) and any rules made thereunder, or (iii) in other circumstances which do not result in the document being a “prospectus” within the meaning of the CO, and no advertisement, invitation or document relating to the notes has been or will be issued or in the possession of any person for the purpose of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to notes which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the SFO and any rules made thereunder.

The contents of this document have not been reviewed by any regulatory authority in Hong Kong. You are advised to exercise caution in relation to the offering. If you are in any doubt about any of the contents of this document, you should obtain independent professional advice.

Japan

The notes have not been and will not be registered under the Financial Instruments and Exchange Act of Japan (Act No. 25 of 1948, as amended (the “FIEA”)). The notes may not be offered or sold, directly or indirectly, in Japan or to, or for the benefit of, any resident of Japan (including any person resident in Japan or any corporation or other entity organized under the laws of Japan), or to others for re-offering or resale, directly or indirectly, in Japan or to or for the benefit of any resident of Japan, except pursuant to an exemption from the registration requirements of the FIEA and otherwise in compliance with any relevant laws and regulations of Japan.

Singapore

This prospectus supplement and the accompanying prospectus have not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus supplement, the accompanying prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the notes may not be circulated or distributed, nor may the notes be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor (as defined in Section 4A of the Securities and Futures Act, Chapter 289 of Singapore (the “SFA”)), (ii) to a relevant person (as defined in Section 275(2) of the SFA) pursuant to Section 275(1) of the SFA, or any person pursuant to Section 275(1A) of the SFA, and in accordance with the conditions specified in Section 275 of the SFA or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA, in each case subject to the conditions set forth in the SFA.

Where the notes are subscribed or purchased under Section 275 of the SFA by a relevant person which is: (a) a corporation (which is not an accredited investor as defined in Section 4A of the SFA) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or (b) a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary is an accredited investor, shares, debentures and units of shares and debentures of that corporation or the beneficiaries’ rights and interest in that trust shall not be transferable for 6 months after that corporation or that trust has acquired the notes under Section 275 of the SFA except: (1) to an institutional investor under Section 274 of the SFA or to a relevant person (as defined in Section 275(2) of the SFA), or any person pursuant to Section 275(1A), and in accordance with the conditions, specified in Section 275 of the SFA; (2) where no consideration is or will be given for the transfer; or (3) by operation of law.

S-52

Singapore Securities and Futures Act Product Classification—Solely for the purposes of our obligations pursuant to Sections 309B(1)(a) and 309B(1)(c) of the SFA, we have determined, and hereby notify all relevant persons (as defined in Section 309A of the SFA) that the notes are a “prescribed capital markets product” (as defined in the Securities and Futures (Capital Markets Products) Regulations 2018) and an Excluded Investment Product (as defined in MAS Notice SFA 04-N12: Notice on the Sale of Investment Products and MAS Notice FAA-N16: Notice on Recommendations on Investment Products).

S-53

LEGAL MATTERS

Certain legal matters in connection with the offering of the notes will be passed upon for us by Davis Polk & Wardwell LLP, New York, New York. Certain legal matters in connection with the offering of the notes will be passed upon for the underwriters by Skadden, Arps, Slate, Meagher & Flom LLP, New York, New York.

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The consolidated financial statements of The AES Corporation appearing in The AES Corporation’s Annual Report on Form 10-K, filed with the SEC on February 26, 2024, for the three years in the period ended December 31, 2023 and the effectiveness of The AES Corporation’s internal control over financial reporting as of December 31, 2023, have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon included therein, and incorporated herein by reference.

S-54

PROSPECTUS

The AES Corporation

Common Stock, Preferred Stock, Depositary Shares,

Debt Securities, Warrants, Purchase Contracts and Units

We may offer from time to time common stock, preferred stock, depositary shares representing preferred stock, debt securities, warrants, purchase contracts or units. In addition, certain selling securityholders to be identified in a prospectus supplement may offer and sell these securities from time to time, in amounts, at prices and on terms that will be determined at the time the securities are offered. Specific terms of these securities will be provided in supplements to this prospectus. You should read this prospectus and any supplement carefully before you invest.

Our common stock and corporate units are listed on the New York Stock Exchange under the symbol “AES” and “AESC”, respectively.

Investing in these securities involves certain risks. See “Risk Factors” beginning on page 56 of our annual report on Form 10-K for the year ended December 31, 2021, which is incorporated by reference herein.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved these securities, or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus may not be used to sell securities unless accompanied by a prospectus supplement.

The date of this prospectus is March 2, 2022

We have not authorized anyone to provide any information other than that contained or incorporated by reference in this prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We are not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information contained in or incorporated by reference in this prospectus or any prospectus supplement or in any such free writing prospectus is accurate as of any date other than their respective dates.

The terms “AES”, “we,” “us,” and “our” refer to The AES Corporation and its subsidiaries.

TABLE OF CONTENTS

THE AES CORPORATION

Incorporated in 1981, AES is a global energy company accelerating the future of energy. Together with our many stakeholders, we are improving lives by delivering the greener, smarter energy solutions the world needs. Our diverse workforce is committed to continuous innovation and operational excellence, while partnering with our customers on their strategic energy transitions and continuing to meet their energy needs today.

We are organized into four market-oriented SBUs: US and Utilities (United States, Puerto Rico and El Salvador); South America (Chile, Colombia, Argentina and Brazil); MCAC (Mexico, Central America and the Caribbean); and Eurasia (Europe and Asia). We have two lines of business: generation and utilities. Each of our SBUs participates in our first business line, generation, in which we own and/or operate power plants to generate and sell power to customers, such as utilities, industrial users, and other intermediaries. Our US and Utilities SBU participates in our second business line, utilities, in which we own and/or operate utilities to generate or purchase, distribute, transmit and sell electricity to end-user customers in the residential, commercial, industrial and governmental sectors within a defined service area. In certain circumstances, our utilities also generate and sell electricity on the wholesale market.

Our principal offices are located at 4300 Wilson Boulevard, Arlington, Virginia 22203. Our telephone number is (703) 522-1315. Our website address is http://www.aes.com. We are not incorporating the contents of the website into this prospectus.

The name “AES” and our logo are AES owned trademarks, service marks or trade names. All other trademarks, trade names or service marks appearing or incorporated by reference in this prospectus are owned by their respective holders.

About this Prospectus

This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission, or the SEC, utilizing a “shelf” registration process. Under this shelf process, we and/or the selling securityholders may sell any combination of the securities described in this prospectus in one or more offerings. This prospectus provides you with a general description of the securities we and/or the selling securityholders may offer. Each time we and/or the selling securityholders sell securities pursuant to the registration statement of which this prospectus forms a part, we will provide a prospectus supplement that will contain specific information about the terms of that offering. The prospectus supplement may also add, update or change information contained in this prospectus. You should read both this prospectus and any prospectus supplement together with additional information described under the heading “Where You Can Find More Information.”

We have filed or incorporated by reference exhibits to the registration statement of which this prospectus forms a part. You should read the exhibits carefully for provisions that may be important to you.

1

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains an Internet website at http://www.sec.gov, from which interested persons can electronically access our reports, proxy and information statements and other information that we file electronically with the SEC, including the registration statement and the exhibits and schedules thereto.

The SEC allows us to “incorporate by reference” the information we file with them, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is an important part of this prospectus, and information that we file later with the SEC will automatically update and supersede this information. We incorporate by reference the documents listed below and all documents we file pursuant to Section 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of 1934, as amended, on or after the date of this prospectus and prior to the termination of the offering under this prospectus and any prospectus supplement (other than, in each case, documents or information deemed to have been furnished and not filed in accordance with SEC rules):

(a) Annual Report on Form 10-K for the year ended December  31, 2021;

(b) Definitive Proxy Statement on Schedule 14A filed with the SEC on March 3, 2021;

(c) The description of our common stock contained on Form 8-A/A filed with the SEC on May 12, 2000, including any amendment or report filed for the purpose of updating that description.

You may request a copy of these filings at no cost, by writing or telephoning the office of the General Counsel, The AES Corporation, 4300 Wilson Boulevard, Arlington, Virginia 22203, telephone number (703) 522-1315.

SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS

This prospectus, including the documents incorporated by reference herein, contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Although we believe that these forward-looking statements and the underlying assumptions are reasonable, we cannot assure you that they will prove to be correct. Forward-looking statements involve a number of risks and uncertainties, and there are factors that could cause actual results to differ materially from those expressed or implied in our forward-looking statements. Some of those factors (in addition to others described elsewhere in this prospectus and in subsequent securities filings) include those factors discussed under the captions entitled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended December 31, 2021.

Although we believe the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, level of activity, performance or achievements. Moreover, neither we nor any other person assumes responsibility for the accuracy and completeness of any of these forward-looking statements. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise. If one or more forward-looking statements are updated, no inference should be drawn that additional updates will be made with respect to those or other forward-looking statements.

USE OF PROCEEDS

Unless otherwise indicated in a prospectus supplement, the net proceeds from the sale of the securities will be used for general corporate purposes, including working capital, acquisitions, retirement of debt and other business opportunities. In the case of a sale by a selling securityholder, we will not receive any of the proceeds from such sale.

2

DESCRIPTION OF SECURITIES

We and/or the selling securityholders may sell, from time to time, in one or more offerings, the following securities:

We will set forth in the applicable prospectus supplement or other offering material a description of the common stock, preferred stock, depositary shares, debt securities, warrants, purchase contracts and units, which may be offered under this prospectus. Any common stock or preferred stock that we offer may include rights to acquire our common stock or preferred stock under any shareholder rights plan then in effect, if applicable under the terms of any such plan. The terms of the offering of securities, including the initial offering price and the net proceeds to us, will be contained in the prospectus supplement or other offering material relating to such offer. The prospectus supplement or any other offering material may also add, update or change information contained in this prospectus. You should carefully read this prospectus, any prospectus supplement or other offering material before you invest in any of our securities.

VALIDITY OF SECURITIES

The validity of the securities in respect of which this prospectus is being delivered will be passed on for us by Davis Polk & Wardwell LLP.

EXPERTS

The consolidated financial statements of The AES Corporation appearing in The AES Corporation’s Annual Report (Form 10-K) for the year ended December 31, 2021, and the effectiveness of The AES Corporation’s internal control over financial reporting as of December 31, 2021, have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon included therein, and incorporated herein by reference. Such financial statements are, and audited financial statements to be included in subsequently filed documents will be, incorporated herein in reliance upon the reports of Ernst & Young LLP pertaining to such financial statements and the effectiveness of our internal control over financial reporting as of the respective dates (to the extent covered by consents filed with the SEC) given on the authority of such firm as experts in accounting and auditing.

3

$   % Fixed-to-Fixed  Reset Rate Junior Subordinated Notes due 20  

PROSPECTUS SUPPLEMENT

Joint Book-Running Managers

Citigroup

Goldman Sachs & Co. LLC

Mizuho

Morgan Stanley

SMBC Nikko

, 2024