================================================================================

                              THE AES CORPORATION


                                      AND


                         BANK ONE, NATIONAL ASSOCIATION


             (FORMERLY KNOWN AS THE FIRST NATIONAL BANK OF CHICAGO)


                                   as Trustee


                               ------------------

                         EIGHTH SUPPLEMENTAL INDENTURE


                            Dated as of June 5, 2001


                                       TO


                                SENIOR INDENTURE


                          Dated as of December 8, 1998

                               ------------------



        7.375% Remarketable or Redeemable Securities (ROARSSM) due 2013


================================================================================




<PAGE>



     The EIGHTH SUPPLEMENTAL INDENTURE, is dated as of this 5th day of June,
2001 (the "Eighth Supplemental Indenture"), between THE AES CORPORATION, a
corporation duly organized and existing under the laws of the State of Delaware
(hereinafter sometimes referred to as the "Company"), and BANK ONE, NATIONAL
ASSOCIATION (formerly known as THE FIRST NATIONAL BANK OF CHICAGO), a national
banking association, as trustee (hereinafter sometimes referred to as the
"Trustee").

     WHEREAS, the Company entered into a Senior Indenture dated as of December
8, 1998 between the Company and the Trustee (the "Indenture") to provide for
the future issuance of its senior debentures, notes or other evidences of
indebtedness (collectively, the "Securities"), said Securities to be issued
from time to time in series as might be determined by the Company pursuant to
the Indenture and, in an unlimited aggregate principal amount; and

     WHEREAS, pursuant to the terms of the Indenture, the Company desires to
provide for the establishment of a new series of its Securities to be known as
its 7.375% Remarketable or Redeemable Securities (ROARSSM) due 2013 (said
series being hereinafter referred to as the "ROARS"), the form and substance of
such ROARS and the terms, provisions and conditions thereof to be set forth as
provided in the Indenture and this Eighth Supplemental Indenture; and

     WHEREAS, the Company desires and has requested the Trustee to join with it
in the execution and delivery of this Eighth Supplemental Indenture, and all
requirements necessary to make this Eighth Supplemental Indenture a valid
instrument, in accordance with its terms, and to make the ROARS, when executed
by the Company and authenticated and delivered by the Trustee, the valid
obligations of the Company;

     NOW, THEREFORE, in consideration of the purchase and acceptance of the
ROARS by the Holders thereof, and for the purpose of setting forth, as provided
in the Indenture, the form and substance of the ROARS and the terms, provisions
and conditions thereof, the Company covenants and agrees with the Trustee as
follows:



<PAGE>


                                  Article One
            DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

     Section 1.1 TERMS DEFINED IN THE INDENTURE.

     Each capitalized term used not but defined in this Eighth Supplemental
Indenture shall have the meaning assigned to such term in the Indenture.

     Section 1.2 CERTAIN DEFINITIONS.

     The following definitions are hereby added to the definitions contained in
Section 1.1 of the Indenture, but only with respect to the ROARS issued in
accordance with the provisions hereof:

     "Applicable Spread" means the lowest Fixed Rate Bid, expressed as a spread
(in the form of a percentage or in basis points) above the Base Rate for the
ROARS, obtained by the Remarketing Dealer by 3:30 p.m., New York City time, on
the Fixed Rate Determination Date, from the Fixed Rate Bids quoted to the
Remarketing Dealer by up to five Reference Corporate Dealers.

     "Attributable Debt" means the present value (discounted at the rate of
7.375% per year compounded monthly) of the obligations for rental payments
required to be paid during the remaining term of any lease of more than 12
months.

     "Base Rate" means 5.50%.

     "Bid" means a Fixed Rate Bid or a Floating Rate Bid.

     "Business Day" means any day other than a Saturday or Sunday or a day on
which banking institutions in New York City are authorized or obligated by law
or executive order to close.

     "Comparable Treasury Issues" for the ROARS means the U.S. Treasury
security or securities selected by the Remarketing Dealer, as of the first
Determination Date, as having an actual or interpolated maturity or maturities
comparable to the remaining term of the ROARS being purchased by the
Remarketing Dealer.

     "Comparable Treasury Price" means, with respect to the first Remarketing
Date:

     (a) the offer prices for the Comparable Treasury Issues (expressed, in
each case, as a percentage of its principal amount) at 12:00 noon, New York
City time, on the first Determination Date, as set forth on Telerate Page 500
(or such other page as may replace Telerate Page 500); or

     (b) if such page (or any successor page) is not displayed or does not
contain such offer prices on such Determination Date, (1) the average of the
Reference Treasury Dealer Quotations for such Determination Date, after
excluding the highest and lowest such Reference


                                       2

<PAGE>


Treasury Dealer Quotations, or (2) if the Remarketing Dealer obtains fewer than
four such Reference Treasury Dealer Quotations, the average of all such
Reference Treasury Dealer Quotations.

     "Consolidated Net Assets" means the aggregate amount of assets (less
reserves and other deductible items) after deducting current liabilities, as
shown on the consolidated balance sheet of the Company and its Subsidiaries
contained in the latest annual report to the stockholders of the Company and
prepared in accordance with GAAP.

     "Determination Date" means either the Fixed Rate Determination Date or the
Floating Rate Spread Determination Date, as applicable.

     "Dollar Price" means, with respect to the ROARS, (1) the principal amount
of such ROARS, plus (2) the premium equal to the excess, if any, of (A) the
present value, as of the first Remarketing Date, of the Remaining Scheduled
Payments for such ROARS, discounted to such first Remarketing Date on a
semiannual basis (assuming a 360-day year consisting of twelve 30-day months)
at the Treasury Rate, over (B) the principal amount of such ROARS.

     "DTC" shall have the meaning provided in Section 2.1 hereof.

     "Fixed Rate Bid" means an irrevocable offer to purchase the aggregate
outstanding principal amount of the ROARS at the Dollar Price, but assuming:

     (a) a settlement date that is the Fixed Rate Remarketing Date applicable
to such ROARS, without accrued interest;

     (b) a maturity date that is the tenth anniversary of the Fixed Rate
Remarketing Date or, if the Company elects to shorten the maturity of the ROARS
pursuant to Section 2.7 hereof, the Modified Maturity Date; and

     (c) a stated annual interest rate equal to the Base Rate plus the spread
bid by the applicable Reference Corporate Dealer.

     "Fixed Rate Determination Date" means the third Business Day prior to the
Fixed Rate Remarketing Date.

     "Fixed Rate Remarketing Date" means (i) June 15, 2003, in the event that
the Remarketing Dealer has elected to purchase the ROARS and the Company has
not elected to exercise its Floating Period Option, or (ii) the subsequent
Remarketing Date on which the Floating Period Termination Date occurs in the
event that the Company has elected to exercise its Floating Period Option.

     "Floating Period Interest Rate" means the sum of the Reference Rate and
the Floating Rate Spread.

     "Floating Period Notification Date" means a date prior to the fourth
Business Day immediately preceding the first Remarketing Date on which the
Company elects to exercise its Floating Period Option.


                                       3

<PAGE>


     "Floating Period Option" means the Company's right, on any date subsequent
to the Remarketing Dealer's election to purchase the ROARS in connection with
the first Remarketing Date but prior to the fourth Business Day immediately
preceding the first Remarketing Date, to require the Remarketing Dealer to
remarket the ROARS at the Floating Period Interest Rate.

     "Floating Period Termination Date" means the earlier of (i) June 15, 2004
or (ii) the date that otherwise would have been the Reference Rate Reset Date
following the date on which the Company elects to terminate the Floating Rate
Period.

     "Floating Rate Bid" means an irrevocable offer to purchase the aggregate
outstanding principal amount of the ROARS at the Dollar Price, but assuming:

     (a) a settlement date that is the Floating Rate Remarketing Date
applicable to such ROARS, without accrued interest;

     (b) a maturity date equal to the Floating Period Termination Date;

     (c) a stated annual interest rate equal to the Reference Rate plus the
spread bid by the applicable Reference Money Market Dealer;

     (d) that the ROARS are callable by the Remarketing Dealer at the Dollar
Price on the Floating Period Termination Date; and

     (e) that the Company will redeem the ROARS at the Dollar Price on the
Floating Period Termination Date, if not previously purchased by the
Remarketing Dealer.

     "Floating Rate Period" means the period from and including the Floating
Rate Remarketing Date to but excluding the Floating Period Termination Date.

     "Floating Rate Period Termination Notification Date" means a date during
the Floating Rate Period on which the Company elects to terminate the Floating
Rate Period, which date shall be at least four Business Days prior to the
Reference Reset Date on which such termination of the Floating Rate Period
shall occur.

     "Floating Rate Remarketing Date" means June 15, 2003 in the event that the
Company has elected to exercise its Floating Period Option.

     "Floating Rate Reset Period" means the period from and including the first
Reference Rate Reset Date, to but excluding the next following Reference Rate
Reset Date, and thereafter, the period from and including a Reference Rate
Reset Date to but excluding the next following Reference Rate Reset Date;
provided that the final Floating Rate Reset Period shall run to but exclude the
Floating Period Termination Date.

     "Floating Rate Spread" means the lowest Floating Rate Bid expressed as a
spread (in the form of a percentage or in basis points) above the Reference
Rate for the ROARS, obtained by the Remarketing Dealer by 3:30 p.m., New York
City time, on the Floating Rate


                                       4

<PAGE>


Spread Determination Date, from the Floating Rate Bids quoted to the
Remarketing Dealer by up to five Reference Money Market Dealers.

     "Floating Rate Spread Determination Date" means the third Business Day
prior to the Floating Rate Remarketing Date.

     "Funded Debt" means indebtedness for borrowed money having a maturity of,
or by its terms extendible or renewable for, a period of more than 12 months
after the determination of the amount thereof.

     "Interest Payment Date" means:

     (a) with respect to the period from the Original Issue Date to but
excluding the first Remarketing Date, June 15 and December 15 of each year,
commencing December 15, 2001;

     (b) with respect to the period from and after the Fixed Rate Remarketing
Date to the Stated Maturity Date, each day that is a six-month anniversary of
such Fixed Rate Remarketing Date; and

     (c) with respect to the Floating Rate Period (if the Company exercises its
Floating Period Option), each Reference Rate Reset Date following the first
Remarketing Date.

     "Interest Rate to Maturity" means the sum of the Base Rate and the
Applicable Spread.

     "London Business Day" means any day on which dealings in U.S. dollars are
transacted in the London Inter-Bank Market.

     "Make-Whole Amount" means the excess, if any, of (i) the aggregate present
value as of the date of such redemption of each dollar of principal being
redeemed and the amount of interest (exclusive of interest accrued to the
redemption date) that would have been payable in respect of such dollar if such
prepayment had not been made, determined by discounting, on a semiannual basis,
such principal and interest at the Reinvestment Rate (determined on the
Business Day preceding the date of such redemption) from the respective dates
on which such principal and interest would have been payable if such payment
had not been made, over (ii) the aggregate principal amount of ROARS being
redeemed.

     "Modified Maturity Date" shall have the meaning provided in Section 2.7
hereof.

     "Notification Date" means, with respect to the first Remarketing Date, a
Business Day not earlier than 20 Business Days prior to the first Remarketing
Date, and not later than 4:00 p.m., New York City time, on the fifteenth
Business Day prior to the first Remarketing Date, or, with respect to the
subsequent Remarketing Date, not later than four Business Days prior to the
occurrence of the subsequent Remarketing Date, on which the Remarketing Dealer
may notify the Company and the Trustee as to whether it elects to purchase the
ROARS on such Remarketing Date.

                                       5

<PAGE>


     "Original Issue Date" means June 5, 2001.

     "Primary Treasury Dealer" means a primary U.S. Government securities
dealer.

     "Principal Property" means any building, structure or other facility
(together with the land on which it is erected and fixtures comprising a part
thereof) used primarily for manufacturing, processing, research, warehousing or
distribution, owned or leased by the Company and having a net book value in
excess of 2% of Consolidated Net Assets, other than any such building,
structure or other facility or portion thereof which is a pollution control
facility financed by state or local governmental obligations or which the
principal executive officer, president and principal financial officer of the
Company determine in good faith is not of material importance to the total
business conducted or assets owned by the Company and its Subsidiaries as an
entirety.

     "Reference Corporate Dealer" means each of up to five leading dealers of
publicly traded debt securities, including the Company's debt securities, which
shall be selected by the Company. The Company shall advise the Remarketing
Dealer of its selection of Reference Corporate Dealers no later than five
Business Days prior to the Fixed Rate Remarketing Date. One of such Reference
Corporate Dealers selected by the Company will be Banc of America, if Banc of
America is then the Remarketing Dealer.

     "Reference Dealer" means a Reference Corporate Dealer or a Reference Money
Market Dealer.

     "Reference Money Market Dealer" means each of up to five leading dealers
of publicly traded debt securities, including the Company's debt securities,
which the Company shall select, who are also leading dealers in money market
instruments. The Company shall advise the Remarketing Dealer of its selection
of Reference Money Market Dealers no later than five Business Days prior to the
Floating Rate Remarketing Date. One of such Reference Money Market Dealers
selected by the Company will be Banc of America, if Banc of America is then the
Remarketing Dealer.

     "Reference Rate" means the rate for each Floating Rate Reset Period which
shall be the rate for deposits in U.S. dollars for a period of one month which
appears on the Telerate Page 3750 (or any successor page) as of 11:00 a.m.,
London time, on the applicable Reference Rate Determination Date. If no rate
appears on Telerate Page 3750 on the Reference Rate Determination Date, the
Remarketing Dealer will request the principal London offices of four major
reference banks in the London Inter-Bank Market, to provide the Remarketing
Dealer, in the case of each such bank, with its offered quotations for deposits
in U.S. dollars for the period of one month, commencing on the first day of the
Floating Rate Reset Period, to prime banks in the London Inter-Bank Market at
approximately 11:00 a.m., London time, on that Reference Rate Determination
Date and in a principal amount that is representative for a single transaction
in U.S. dollars in that market at that time. If at least two quotations are
provided, then the Reference Rate will be the average of those quotations. If
fewer than two quotations are provided, then the Reference Rate will be the
average (rounded, if necessary, to the nearest one hundredth of a percent) of
the rates quoted at approximately 11:00 a.m., New York City time, on the
Reference Rate Determination Date by three major banks in New York City
selected by the


                                       6

<PAGE>


Remarketing Dealer for loans in U.S. dollars to leading European banks, having
a one-month maturity and in a principal amount that is representative for a
single transaction in U.S. dollars in that market at that time. If the banks
selected by the Remarketing Dealer are not providing quotations in the manner
described in this paragraph, the rate for the Floating Rate Reset Period
following the Reference Rate Determination Date will be the rate in effect on
that Reference Rate Determination Date.

     "Reference Rate Determination Date" means the second London Business Day
preceding each Reference Rate Reset Date.

     "Reference Rate Reset Date" means June 15, 2003 and the 15th day of each
month thereafter until, but excluding, the Floating Period Termination Date,
or, if such day does not fall on a Business Day, the next succeeding Business
Day.

     "Reference Treasury Dealer" means each of up to five Primary Treasury
Dealers to be selected by the Company, and their respective successors;
provided that if any of the foregoing ceases to be, and has no affiliate that
is, a Primary Treasury Dealer, the Company shall substitute for it another
Primary Treasury Dealer. One of such Reference Treasury Dealers selected by the
Company will be Banc of America, if Banc of America is then the Remarketing
Dealer.

     "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer, the offer prices for the Comparable Treasury Issues
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Remarketing Dealer by such Reference Treasury Dealer, by 3:30
p.m., New York City time, on the first Determination Date.

     "Regular Record Date" means, with respect to each Interest Payment Date,
the close of business on the 15th calendar day, whether or not a Business Day,
prior to such Interest Payment Date.

     "Reinvestment Rate" means 0.50% (one-half of one percent) plus the
arithmetic mean of the yields under the respective headings "This Week" and
"Last Week" published in the Statistical Release under the caption "Treasury
Constant Maturities" for the maturity (rounded to the nearest month)
corresponding to the maturity of the principal being prepaid. If no maturity
exactly corresponds to such maturity, yields for the two published maturities
most closely corresponding to such maturity shall be calculated pursuant to the
immediately preceding sentence and the Reinvestment Rate shall be interpolated
or extrapolated from such yields on a straight-line basis, rounding in each of
such relevant periods to the nearest month. For the purpose of calculating the
Reinvestment Rate, the most recent Statistical Release published prior to the
date of determination of the Make-Whole Amount shall be used.

     "Remaining Scheduled Payments" means the remaining scheduled payments of
the principal and interest on the ROARS, calculated at the Base Rate, that
would be due from, but excluding, the first Remarketing Date to, and including,
June 15, 2013; provided that if such Remarketing Date is not an Interest
Payment Date, the amount of the next succeeding scheduled interest payment,
calculated at the Base Rate, shall be reduced by the amount of interest
accrued, calculated at the Base Rate only, to the first Remarketing Date.

                                       7

<PAGE>


     "Remarketing Date(s)" means (1) June 15, 2003, in the event that the
Remarketing Dealer has elected to purchase the ROARS and the Company has not
elected to exercise its Floating Period Option, or (2) if the Company has
elected to exercise its Floating Period Option, each of June 15, 2003 and the
Floating Period Termination Date.

     "Remarketing Agreement" means the Remarketing Agreement dated as of June
5, 2001 between the Company and Banc of America Securities LLC, as the
Remarketing Dealer, as amended from time to time.

     "Remarketing Dealer" means the Remarketing Dealer under the Remarketing
Agreement, which Remarketing Dealer shall initially be Banc of America
Securities LLC.

     "Stated Maturity Date" means June 15, 2013 or, if the Company elects to
exercise its Floating Period Option and the ROARS are remarketed, the tenth
anniversary of the Fixed Rate Remarketing Date; provided that such date shall
not be later than June 15, 2014; and provided further that if the Company
elects to shorten the maturity of the ROARS pursuant to Section 2.7 hereof, the
Stated Maturity Date shall be the Modified Maturity Date.

     "Statistical Release" means the statistical release designated "H.15(519)"
or any successor publication which is published weekly by the Federal Reserve
System and which establishes yields on actively traded U.S. government
securities adjusted to constant maturities or, if such statistical release is
not published at the time of any determination under the Indenture, then such
other reasonably comparable index which shall be designated by the Company.

     "Telerate Page 500" means the display designated as "Telerate Page 500" on
Dow Jones Markets (or such other page as may replace "Telerate Page 500" on
such service) or such other service displaying the offer prices for the
Comparable Treasury Issues, as may replace Dow Jones Markets.

     "Telerate Page 3750" means the display designated as "Telerate Page 3750"
on Dow Jones Markets (or such other page as may replace "Telerate Page 3750" on
such service) or such other service displaying the offer prices, as may replace
Dow Jones Markets.

     "Treasury Rate" means, with respect to the first Remarketing Date, the
rate per year equal to the semiannual equivalent yield to maturity or
interpolated (on a day count basis) yield to maturity of the Comparable
Treasury Issues, assuming a price for the Comparable Treasury Issues (expressed
as a percentage of their principal amounts) equal to the Comparable Treasury
Price for such Remarketing Date.


                                  Article Two
                                   THE ROARS

     Section 2.1 FORM.

     The ROARS shall be substantially in the form of Exhibit A hereto, which is
a part of this Eighth Supplemental Indenture, with such appropriate insertions,
omissions, substitutions


                                       8

<PAGE>


and other variations as are required or permitted by the Indenture and this
Eighth Supplemental Indenture, and may have such letters, numbers or other
marks of identification and such legends or endorsements placed thereon as may
be required to comply with the rules of any securities exchange or as may,
consistently herewith, be determined by the Officers of the Company executing
such ROARS, as evidenced by their execution of the ROARS.

     The ROARS will initially be issued as Registered Global Securities.

     The Company initially appoints The Depository Trust Company ("DTC") and
the Trustee to act as Depositary and custodian, respectively, with respect to
the ROARS.

     The Company waives any discretionary right it otherwise has under Section
2.7 of the Indenture to cause the ROARS to be issued in certificated form and
agrees to use its reasonable best efforts to maintain the ROARS in book-entry
form with DTC or any successor Depositary and to appoint a successor Depositary
to the extent necessary to maintain the ROARS in book-entry form. Any
Registered Global Security that is exchangeable pursuant to the preceding
sentence shall be exchangeable for ROARS registered in such names as the
Depositary shall direct.

     Section 2.2 DESIGNATION AND AMOUNT.

     (a) The ROARS shall be entitled the "7.375% Remarketable or Redeemable
Securities (ROARSSM) due 2013" of the Company.

     (b) The Trustee shall authenticate and deliver ROARS for original issue on
the date hereof in an initial aggregate principal amount of $200,000,000.

     (c) The Company may, subject to Article 4 of this Eighth Supplemental
Indenture and applicable law, issue additional ROARS under this Eighth
Supplemental Indenture. The ROARS issued on the Closing Date and any additional
ROARS subsequently issued shall be treated as a single class for all purposes
of this Eighth Supplemental Indenture.

     Section 2.3 PAYMENT OF PRINCIPAL AND INTEREST.

     (a) The principal of the ROARS shall be due on the Stated Maturity Date
(unless the ROARS are earlier redeemed or repurchased). The ROARS shall bear
interest at the rate of 7.375% per year, for the period from the Original Issue
Date to but excluding the first Remarketing Date, such interest to be paid
semiannually on December 15 and June 15 of each year, commencing December 15,
2001. Interest on the ROARS accruing to the first Remarketing Date shall be
computed on the basis of a 360-day year of twelve 30-day months.

     (b) The ROARS shall bear interest from and after the Fixed Rate
Remarketing Date at a rate per annum equal to the Interest Rate to Maturity,
such interest to be paid semiannually on each day that is a six-month
anniversary of such Fixed Rate Remarketing Date. Interest on the ROARS accruing
from the Fixed Rate Remarketing Date shall be computed on the basis of a
360-day year consisting of twelve 30-day months.


                                       9

<PAGE>


     (c) The ROARS shall bear interest during the Floating Rate Period at the
Floating Period Interest Rate with respect to each Floating Rate Reset Period.
The amount of interest payable for each day that the ROARS are outstanding
during the Floating Rate Period shall be calculated by dividing the Floating
Period Interest Rate in effect for such day by 360 and multiplying the result
by the Dollar Price. The amount of interest payable for any Floating Rate Reset
Period shall be calculated by adding the interest payable for each day in the
Floating Rate Reset Period. Interest on the ROARS accruing during any Floating
Rate Reset Period shall be payable on the next following Reference Rate Reset
Date. Interest on the ROARS accruing during the Floating Rate Period shall be
computed on the basis of the actual number of days in such Floating Rate Reset
Period over a 360-day year.

     (d) Except as otherwise provided herein, interest on the ROARS payable on
any Interest Payment Date shall be payable to the Persons in whose names the
ROARS are registered on the Regular Record Date for such Interest Payment Date.
Interest payable on any Interest Payment Date shall accrue from and including
the next preceding Interest Payment Date (or from and including the Original
Issue Date if no interest has been paid or duly provided with respect to the
ROARS) to, but excluding, the relevant Interest Payment Date, Remarketing Date
or the Stated Maturity Date, as the case may be. If any Interest Payment Date,
the Stated Maturity Date or other payment date of the ROARS (including any
payment date in connection with the mandatory tender or any mandatory
redemption of the ROARS) does not fall on a Business Day, the payment otherwise
payable on that date shall be made on the next succeeding day that is a
Business Day with the same force and effect as if made on the date the payment
was originally payable, and no interest shall accrue for the period from and
after such Interest Payment Date, Stated Maturity Date or other payment date.
In the case of any such payment with respect to the ROARS that then accrue
interest at a floating rate, interest will accrue from such originally
scheduled payment date to but excluding the next succeeding Business Day;
provided that in the case of an interest payment due on the Stated Maturity
Date, no interest will accrue from and after the Stated Maturity Date.

     Section 2.4 DENOMINATIONS.

     The ROARS shall be Registered Securities in denominations of $1,000 or any
integral multiple thereof.

     Section 2.5 PLACE OF PAYMENT.

     The place of payment for the ROARS shall be the Borough of Manhattan, The
City of New York. So long as the ROARS are in the form of Registered Global
Securities, the Company agrees that payments of interest on, and any portion of
the Principal of, the ROARS shall be made by the Paying Agent, upon receipt
from the Company of immediately available funds, directly to the Depositary (by
Federal funds wire transfer).

     Section 2.6 MANDATORY TENDER; REMARKETING AND DETERMINATION OF INTEREST
RATE.

     (a) Mandatory Tender. (i) On a Business Day not earlier than 20 Business
Days prior to the first Remarketing Date, and not later than 4:00 p.m., New
York City time, on


                                      10

<PAGE>


the 15th Business Day prior to such Remarketing Date or (ii) not later than
four Business Days prior to the occurrence of the subsequent Remarketing Date,
the Remarketing Dealer shall notify the Company and the Trustee as to whether
it elects to purchase the ROARS for remarketing on such Remarketing Date.

     If the Remarketing Dealer so elects, the ROARS shall be subject to
mandatory tender, and shall be deemed tendered, to the Remarketing Dealer for
purchase and remarketing on such Remarketing Date, in accordance with the terms
and subject to the conditions described herein.

     The ROARS shall be remarketed at a fixed rate of interest equal to the
Interest Rate to Maturity, unless the Company has elected to exercise its
Floating Period Option or redeem the ROARS on the applicable Remarketing Date.
If the Company so elects, the ROARS shall bear interest at the Floating Period
Interest Rate until the Floating Period Termination Date, at which time the
ROARS shall be remarketed at a fixed rate of interest equal to the Interest
Rate to Maturity unless the Company has chosen to redeem, or is required to
redeem, the ROARS, as set forth herein.

     The purchase price of the tendered ROARS shall be equal to 100% of the
aggregate principal amount thereof on the first Remarketing Date, or the Dollar
Price on the subsequent Remarketing Date.

     Subject to the Remarketing Dealer's election to purchase the ROARS, the
Remarketing Dealer shall sell the aggregate principal amount of the ROARS on
the applicable Remarketing Date at the Dollar Price to the Reference Corporate
Dealer providing the lowest Fixed Rate Bid (if the Remarketing Date constitutes
a Fixed Rate Remarketing Date) or to the Reference Money Market Dealer
providing the lowest Floating Rate Bid (if the Remarketing Date constitutes a
Floating Rate Remarketing Date), in the case of the first Remarketing Date, or
to the Reference Corporate Dealer providing the lowest Fixed Rate Bid, in the
case of the subsequent Remarketing Date. If the lowest applicable Bid is
submitted by two or more of the applicable Reference Dealers, the Remarketing
Dealer shall sell such ROARS to one or more of such Reference Dealers, as it
shall determine in its sole discretion.

     If the Remarketing Dealer elects to purchase the ROARS, the obligation of
the Remarketing Dealer to purchase the ROARS on any Remarketing Date shall be
subject to certain conditions set forth in the Remarketing Agreement.

     If for any reason the Remarketing Dealer does not purchase the ROARS on
any Remarketing Date, the Company shall be required to redeem the ROARS in
accordance with Section 3.1(a) hereof at a price equal to 100% of the aggregate
principal amount of the ROARS, plus accrued and unpaid interest, if any, if
such Remarketing Date is the first Remarketing Date, or at the Dollar Price,
plus accrued and unpaid interest, if any, on the subsequent Remarketing Date.

     (b) Remarketing. The interest rates on the ROARS from, and including, the
Remarketing Date shall be established by the Remarketing Dealer in accordance
with the following procedures:


                                      11

<PAGE>


          i. Interest Rate to Maturity. If the Remarketing Dealer elects to
     purchase the ROARS on the first Remarketing Date, then by 3:30 p.m., New
     York City time, on the Floating Rate Spread Determination Date or the
     Fixed Rate Determination Date with respect to the first Remarketing Date,
     depending on the following election, the Remarketing Dealer shall
     determine (1) the Floating Rate Spread, in the case that the Company has
     elected to exercise its Floating Period Option, or (2) the Interest Rate
     to Maturity to the nearest one hundredth of one percent (0.01%) per year
     unless the Company has elected to redeem the ROARS in accordance with
     Section 3.1(b), or is required to redeem the ROARS pursuant to Section
     3.1(a). If there is a subsequent Remarketing Date, by 3:30 p.m., New York
     City time, on the related Fixed Rate Determination Date, the Remarketing
     Dealer shall determine the Interest Rate to Maturity to the nearest one
     hundredth of one percent (0.01%) per annum unless the Company elects or is
     required to redeem the ROARS as aforesaid. On the Floating Rate Spread
     Determination Date or the Fixed Rate Determination Date with respect to
     the first Remarketing Date, the Remarketing Dealer shall determine the
     Dollar Price. The Interest Rate to Maturity and the Dollar Price for the
     ROARS announced by the Remarketing Dealer, absent manifest error, shall be
     binding and conclusive upon the Holders, the holders of beneficial
     interests in the ROARS, the Company and the Trustee, and the Trustee shall
     have no responsibility for the calculation thereof.

          ii. Floating Rate Period. Following the Remarketing Dealer's election
     to purchase the ROARS on the first Remarketing Date, but prior to 4:00
     p.m., New York City time, on the fourth Business Day immediately preceding
     such Remarketing Date, the Company may elect to exercise its Floating
     Period Option. If the Company makes such election, the ROARS shall bear
     interest at the Floating Period Interest Rate until the Floating Period
     Termination Date. In the event that the Company elects to exercise its
     Floating Period Option, the Stated Maturity Date of the ROARS shall be
     adjusted to a date which shall be no later than the tenth anniversary of
     the Fixed Rate Remarketing Date.

          iii. The amount of the interest payable for each day that the ROARS
     are outstanding during the Floating Rate Period shall be calculated by
     dividing the Floating Period Interest Rate in effect for such day by 360
     and multiplying the result by the Dollar Price. The amount of interest
     payable for any Floating Rate Reset Period shall be calculated by adding
     the interest payable for each day in the Floating Rate Reset Period. The
     Floating Period Interest Rate for the ROARS announced by the Remarketing
     Dealer, absent manifest error, shall be binding and conclusive upon the
     Holders, the holders of beneficial interests in the ROARS, the Company and
     the Trustee, and the Trustee shall have no responsibility for the
     calculation thereof. The interest rate in effect with respect to each
     Floating Rate Reset Period shall be the Floating Period Interest Rate
     determined for such period on the preceding Reference Rate Determination
     Date.

          iv. Notification. Subject, in connection with the first Remarketing
     Date, to the Remarketing Dealer's election to remarket the ROARS and to
     the Company's election not to exercise its Floating Period Option, as set
     forth in this Section 2.6, and in connection with the subsequent
     Remarketing Date, to the Remarketing Dealer's election to remarket the
     ROARS, the Remarketing Dealer shall notify the Company, the Trustee


                                      12

<PAGE>


     and the Depositary by telephone, confirmed in writing (which confirmation
     may be by facsimile or other electronic transmission), by 4:00 p.m., New
     York City time, on the Fixed Rate Determination Date of the Interest Rate
     to Maturity of the ROARS effective from and including the Fixed Rate
     Remarketing Date. The Remarketing Dealer shall notify the Trustee of the
     Dollar Price and of the Floating Period Interest Rate with respect to each
     Floating Rate Reset Period promptly after the determination thereof. The
     Company shall promptly notify the Remarketing Dealer and the Trustee of
     its election to exercise its Floating Period Option or to terminate the
     Floating Rate Period.

          v. Redetermination of Interest Rates in Certain Events.
     Notwithstanding any provision herein to the contrary, in lieu of
     terminating the Remarketing Agreement pursuant to Section 12(b) thereof,
     upon the occurrence of any of the events set forth therein, the
     Remarketing Dealer, in its sole discretion at any time between any
     Determination Date and 3:30 p.m., New York City time, on the Business Day
     immediately preceding the applicable Remarketing Date, may elect to
     purchase the ROARS for remarketing and determine a new Floating Period
     Interest Rate or Interest Rate to Maturity, as the case may be, in the
     manner provided in this Section 2.6, except that for purposes of
     determining the new Floating Period Interest Rate or Interest Rate to
     Maturity, as the case may be, pursuant to this paragraph the Determination
     Date referred to therein shall be the date of such election and
     redetermination. The Remarketing Dealer shall notify the Company, the
     Trustee and the Depositary by telephone, confirmed in writing (which
     confirmation may be by facsimile or other electronic transmission), by
     4:00 p.m., New York City time, on the date of such election, of the new
     Floating Period Interest Rate or Interest Rate to Maturity, as the case
     may be, of the ROARS. Thereupon, such new Floating Period Interest Rate or
     Interest Rate to Maturity shall supersede and replace any Floating Period
     Interest Rate or Interest Rate to Maturity previously determined by the
     Remarketing Dealer and, absent manifest error, shall be binding and
     conclusive upon the Holders of, and holders of beneficial interests in,
     the ROARS on and after such Remarketing Date, the Company and the Trustee;
     provided that the Remarketing Dealer, by redetermining the Floating Period
     Interest Rate or Interest Rate to Maturity upon the occurrence of any
     event set forth in Section 12(b) of the Remarketing Agreement, shall not
     thereby be deemed to have waived its right to determine a new Floating
     Period Interest Rate or Interest Rate to Maturity or to terminate the
     Remarketing Agreement upon the occurrence of any other event set forth in
     such Section 12(b).

     Section 2.7 MODIFICATION OF MATURITY.

     The Company shall have the right to modify the maturity date of the ROARS
by giving written notice to the Trustee and the Remarketing Dealer no later
than by 4:00 p.m. on the fourth Business Day prior to the Fixed Rate
Remarketing Date; provided that such modified maturity date (the "Modified
Maturity Date") shall be an anniversary of such Fixed Rate Remarketing Date
occurring on or prior to June 15, 2014. In the event that the Company gives a
notice referred to in the immediately preceding sentence, the Stated Maturity
Date of the ROARS shall be adjusted to the Modified Maturity Date.


                                      13

<PAGE>


                                 Article Three
                                 REDEMPTION OF
                                   THE ROARS

     Section 3.1 MANDATORY REDEMPTION; OPTIONAL REDEMPTION; POST-REMARKETING
OPTIONAL REDEMPTION.

     (a) Mandatory Redemption. Subject to Section 2.6(b)(v) hereof, the Company
shall redeem the ROARS in whole on the applicable Remarketing Date at a price
equal to 100% of the aggregate principal amount of the ROARS, if such
Remarketing Date is the first Remarketing Date, or the Dollar Price on any
subsequent Remarketing Date, plus, in each case, accrued and unpaid interest,
if any, to such Remarketing Date, in the event that (i) at any time after the
Remarketing Dealer elects on the applicable Notification Date to remarket such
ROARS, the Remarketing Dealer elects to terminate the Remarketing Agreement in
accordance with its terms; (ii) prior to any Remarketing Date, the Remarketing
Dealer resigns and no successor has been appointed on or before such
Determination Date; (iii) the Remarketing Dealer for any reason does not notify
the Company of the Floating Rate Spread or of the Interest Rate to Maturity by
4:00 p.m., New York City time, on the applicable Determination Date; (iv) the
Remarketing Dealer for any reason does not elect by notice to the Company and
the Trustee not later than such Notification Date, to purchase the ROARS for
remarketing on such Remarketing Date; (v) the Remarketing Dealer for any reason
does not deliver the purchase price of such ROARS to the Trustee in same day
funds not later than 12:00 noon, New York City time, on such Remarketing Date,
or does not purchase all tendered ROARS on such Remarketing Date; or (vi) the
Company for any reason fails to redeem the ROARS from the Remarketing Dealer
following the Company's election to effect such optional redemption as set
forth in Section 3.1(b) hereof. Notwithstanding Section 3.2 of the Indenture,
the Company shall not be required to give notice of any such mandatory
redemption to the Holders of, or the holders of beneficial interests in, the
ROARS.

     (b) Optional Redemption. If the Remarketing Dealer elects to purchase the
ROARS, the Company may at its option redeem the ROARS, in whole but not in
part, on the first Remarketing Date or on the Floating Period Termination Date
immediately following the Determination Date with respect to such election. The
Company shall notify the Remarketing Dealer and the Trustee, not later than
4:00 p.m., New York City time, on the Business Day immediately preceding the
applicable Determination Date if the Company elects to redeem the ROARS (which
election shall be irrevocable) in accordance herewith; provided that if fewer
than three Reference Corporate Dealers submit timely, firm bids for all
outstanding ROARS to the Remarketing Dealer on the applicable Determination
Date, the Company may give such notice immediately after the deadline set by
the Remarketing Dealer for receiving such bids has passed and the Company has
been notified of such results. If the Company exercises its right to redeem the
ROARS, the Company shall redeem the ROARS, in whole but not in part, on the
first Remarketing Date or the subsequent Remarketing Date, as the case may be,
at the Dollar Price, plus all accrued and unpaid interest, if any, to such
Remarketing Date. Notwithstanding Section 3.2 of the Indenture, no notice of
redemption need be provided to the Holders of, or the holders of beneficial
interests in, the ROARS with respect to any such redemption.


                                      14

<PAGE>


     (c) Post-Remarketing Optional Redemption. The ROARS shall be redeemable,
in whole or in part from time to time, at any time after the Fixed Rate
Remarketing Date at the election of the Company upon not less than 30 nor more
than 60 days notice mailed to each holder of ROARS to be redeemed at such
holder's address appearing in the Security Register, at a price (the
"Redemption Price") equal to the sum of (i) 100% of the principal amount
thereof plus accrued and unpaid interest to the redemption date plus (ii) the
Make-Whole Amount, if any. The Company shall give the Trustee notice of the
Redemption Price with respect to any redemption pursuant to this Section 3.1(c)
promptly after the calculation thereof and the Trustee shall have no
responsibility for any such calculation. In the event of the redemption of the
ROARS in part only, one or more new ROARS for the unredeemed portion shall be
issued in the name or names of the Holders thereof upon surrender of the ROARS
that are to be partially redeemed.

     (d) No sinking fund is provided for the ROARS.


                                  Article Four
                        ADDITIONAL COVENANTS APPLICABLE
                                  TO THE ROARS

     Section 4.1 RESTRICTIONS ON SECURED DEBT.

     If the Company shall incur, issue, assume or guarantee any indebtedness
for borrowed money represented by notes, bonds, debentures or other similar
evidences of indebtedness, secured by a mortgage, pledge or other lien on any
Principal Property or any capital stock or indebtedness held directly by the
Company of any Subsidiary of the Company, the Company shall secure the ROARS
equally and ratably with (or prior to) such indebtedness, so long as such
indebtedness shall be so secured, unless after giving effect thereto the
aggregate amount of all such indebtedness so secured, together with all
Attributable Debt in respect of sale and leaseback transactions involving
Principal Properties, would not exceed 15% of the Consolidated Net Assets of
the Company.

     The foregoing restriction shall not apply to, and there shall be excluded
in computing secured indebtedness for the purpose of such restriction,
indebtedness secured by (a) property of any Subsidiary of the Company, (b)
liens on property of, or on any shares of stock or debt of, any corporation
existing at the time such corporation becomes a Subsidiary, (c) liens in favor
of the Company or any Subsidiary, (d) liens in favor of U.S. or foreign
governmental bodies to secure partial, progress, advance or other payments, (e)
liens on property, shares of stock or debt existing at the time of acquisition
thereof (including acquisition through merger or consolidation), purchase money
mortgages and construction cost mortgages existing at or incurred within 180
days of the time of acquisition thereof, (f) liens existing on the first date
on which any ROARS are authenticated by the Trustee, (g) liens under one or
more credit facilities for indebtedness in an aggregate principal amount not to
exceed $900,000,000 at any time outstanding, (h) liens incurred in connection
with pollution control, industrial revenue or similar


                                      16

<PAGE>


financings, and (i) any extension, renewal or replacement of any debt secured
by any liens referred to in the foregoing clauses (a) through (h), inclusive.

     Section 4.2 RESTRICTIONS ON SALES AND LEASEBACKS.

     The Company shall not enter into any sale and leaseback transaction
involving any Principal Property, the acquisition or completion of construction
and commencement of full operation of which has occurred more than 180 days
prior thereto, unless (a) the Company could incur a lien on such property under
the restrictions described in Section 4.1 hereof in an amount equal to the
Attributable Debt with respect to the sale and leaseback transaction without
equally and ratably securing the ROARS or (b) the Company, within 180 days
after the sale or transfer by the Company, applies to the retirement of its
Funded Debt an amount equal to the greater of (i) the net proceeds of the sale
of the Principal Property sold and leased pursuant to such arrangement or (ii)
the fair market value of the Principal Property so sold and leased as
determined by the board of directors of the Company; provided that the amount
to be applied to the retirement of Funded Debt of the Company shall be reduced
by (A) the principal amount of any ROARS delivered within 180 days after such
sale or transfer to the Trustee for retirement and cancellation, and (B) the
principal amount of Funded Debt, other than ROARS, voluntarily retired by the
Company within 180 days after such sale or transfer; provided further that no
retirement referred to in this clause (b) may be effected by payment at
maturity or pursuant to any mandatory sinking fund payment or any mandatory
prepayment provision.

     Section 4.3 AMENDMENTS; MODIFICATIONS.

     The Company covenants, for the benefit of the Remarketing Dealer only,
that this Eighth Supplemental Indenture shall not be amended for the purpose of
changing any of the terms or provisions of the ROARS or changing any other
provisions of this Eighth Supplemental Indenture without the prior written
consent of the Remarketing Dealer (it being understood that, notwithstanding
the provisions of this Section 4.3, the Company shall not be precluded from
amending the Indenture in any manner whatsoever so long as the amendment does
not pertain exclusively to the ROARS).

     Section 4.4 PURCHASES BY THE COMPANY.

     The Company agrees that it shall not, without the prior written consent of
the Remarketing Dealer, make any open market or other purchases of the ROARS
prior to the first Remarketing Date or termination of the Remarketing
Agreement, whichever is earlier.

     Section 4.5 TAX TREATMENT OF ROARS.

     It is the intent of the Company, that for purposes of United States
federal income, state and local income and any other income taxes, the ROARS
will be treated as fixed rate debt instruments maturing on the first
Remarketing Date. Unless otherwise required by the appropriate tax authorities,
the Company and the Trustee will treat the ROARS consistent with their
characterization.


                                      16

<PAGE>


                                 Article Five
                    ADDITIONAL EVENTS OF DEFAULT APPLICABLE
                                  TO THE ROARS

     Section 5.1 ADDITIONAL EVENTS OF DEFAULT.

     Pursuant to Section 6.1 (f) of the Indenture, an "Event of Default" shall
be deemed to occur with respect to the ROARS if an event of default, as defined
in any indenture or instrument evidencing or under which the Company has as of
the date of this Eighth Supplemental Indenture or shall thereafter have
outstanding any indebtedness, shall happen and be continuing and either (a)
such default results from the failure to pay the principal of such indebtedness
in excess of $50 million at final maturity of such indebtedness or (b) as a
result of such default the maturity of such indebtedness shall have been
accelerated so that the same shall be or become due and payable prior to the
date on which the same would otherwise have become due and payable, and such
acceleration shall not be rescinded or annulled within 60 days and the
principal amount of such indebtedness, together with the principal amount of
any other indebtedness of the Company in default, or the maturity of which has
been accelerated, aggregates $50 million or more; provided that the Trustee
shall not be charged with knowledge of any such default unless written notice
thereof shall have been given to the Trustee by the Company, by the holder or
an agent of the holder of any such indebtedness, by the trustee then acting
under any indenture or other instrument under which such default shall have
occurred, or by the holders of not less than 25% in the aggregate principal
amount of the ROARS at the time outstanding; and provided further that if such
default shall be remedied or cured by the Company or waived by the holder of
such indebtedness, then the Event of Default described under this Eighth
Supplemental Indenture shall be deemed likewise to have been remedied, cured or
waived without further action on the part of the Trustee, any Holder of ROARS
or any other person.


                                  Article Six
                            MISCELLANEOUS PROVISIONS

     Section 6.1 RATIFICATION.

     The Indenture, as supplemented by this Eighth Supplemental Indenture, is
in all respects ratified and confirmed. This Eighth Supplemental Indenture
shall be deemed part of the Indenture in the manner and to the extent provided
herein and therein.

     Section 6.2 COUNTERPARTS.

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


                                      17

<PAGE>



     IN WITNESS WHEREOF, the parties hereto have caused this Eighth
Supplemental Indenture to be duly executed and attested, on the date or dates
indicated in the acknowledgments and as of the day and year first above
written.

                                           THE AES CORPORATION, as
                                           the Company



                                           By:
                                              ---------------------------------
                                              Name:
                                              Title:
Attest:


By:
   -------------------------------
   Name:
   Title:

                                           BANK ONE, NATIONAL ASSOCIATION
                                           (formerly known as THE FIRST
                                           NATIONAL BANK OF CHICAGO), as Trustee


                                              ----------------------------------
                                              Name:
                                               Title:

Attest:


By:
   ---------------------------------
   Name:
   Title:


                                      18
<PAGE>



                                                                       EXHIBIT A


                             FORM OF FACE OF ROARS

     This 7.375% Remarketable or Redeemable Securities (ROARSSM) due 2013 (this
"Security") is a Registered Global Security within the meaning of the Indenture
hereinafter referred to and is registered in the name of a Depositary or a
nominee of a Depositary. This Security is exchangeable for Securities
registered in the name of a person other than the Depositary or its nominee
only in the limited circumstances described in the Indenture. Unless and until
it is exchanged in whole or in part for Securities in definitive registered
form, this Security may not be transferred except as a whole by the Depositary
to the nominee of the Depositary or by a nominee of the Depositary to the
Depositary or another nominee of the Depositary or by the Depositary or any
such nominee to a successor Depositary or a nominee of such successor
Depositary.

     Unless this Security is presented by an authorized representative of The
Depository Trust Company (55 Water Street, New York, New York) to the issuer or
its agent for registration of transfer, exchange or payment, and any Security
issued is registered in the name of Cede & Co. or such other name as requested
by an authorized representative of The Depository Trust Company and any payment
hereon is made to Cede & Co., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY A PERSON IS WRONGFUL since the registered owner hereof,
Cede & Co., has an interest herein.

     By purchasing this Security, you agree to treat, and to take no action
inconsistent with the treatment of, the ROARS as fixed rate debt instruments
that mature on the first Remarketing Date, unless required by the appropriate
tax authorities.


                                      A-1


<PAGE>



                                                   No . 1 CUSIP NO.: 00130H AW 5


                                  $200,000,000

        7.375% REMARKETABLE OR REDEEMABLE SECURITIES (ROARSSM) DUE 2013


                      THE AES CORPORATION promises to pay
           to Cede & Co., or registered assigns the principal sum of
                   TWO HUNDRED MILLION Dollars ($200,000,000)
                                       on
                 the Stated Maturity Date (as defined herein).

Original Issue Date:  June 5, 2001

First Remarketing Date:  June 15, 2003

Stated Maturity Date: June 15, 2013, as such date may be extended or shortened,
in each case as set forth in the Indenture

Interest Payment Dates: June 15 and December 15 of each year, commencing
December 15, 2001 through the Remarketing Date shown above and thereafter as
set forth herein

Record Dates:  June 1 and December 1


                                           By:
                                              ----------------------------------
                                                    Authorized Signature


                                           By:
                                              ----------------------------------
                                                    Authorized Signature

Dated:  June 5, 2001

Certificate of Authentication

                  This is one of the 7.375% Remarketable or Redeemable
Securities (ROARSSM) due 2013 referred to in the within-mentioned Indenture.


                                           Bank One, National Association
                                           (formerly known as The First
                                           National Bank of Chicago), as Trustee


                                           By:
                                              ----------------------------------
                                                    Authorized Signatory


                                      A-2
<PAGE>



                           [FORM OF REVERSE OF ROARS]

                              THE AES CORPORATION


        7.375% REMARKETABLE OR REDEEMABLE SECURITIES (ROARSSM) DUE 2013

     i. Principal and Interest.

     THE AES CORPORATION, a Delaware corporation (the "Company," which
definition shall include any successor thereto in accordance with the Indenture
(as defined below)), promises to pay, until the principal hereof is paid or
made available for payment, interest on the principal amount set forth on the
reverse side hereof. Interest on the 7.375% Remarketable or Redeemable
Securities (ROARSSM) due 2013 ("ROARS"; and this note certificate representing
ROARS, this "Security") will accrue from and including the most recent date to
which interest has been paid or, if no interest has been paid, from the
Original Issue Date shown on the reverse hereof, on each Interest Payment Date
shown on the reverse hereof (each, an "Interest Payment Date") semiannually in
arrears commencing on the Interest Payment Date specified above to the
Remarketing Date shown on the reverse hereof (the "first Remarketing Date") at
a rate of 7.375% per annum (the "Interest Rate") and thereafter, subject to the
terms and conditions set forth in the Indenture, on the Interest Payment Dates
and at the interest rate or rates determined by the Remarketing Dealer (as
defined below) as set forth in the Indenture, until the principal hereof is
paid or made available for payment, and on any overdue principal and on any
overdue installment of interest as below provided.

     Payments of interest on this Security will include interest accrued to but
excluding the respective Interest Payment Dates. Interest on this Security
shall be computed on the basis of a 360-day year of twelve 30-day months from
the Original Issue Date to the first Remarketing Date and then, subject to the
Remarketing Dealer's election to remarket and the Corporation's election to
exercise its Floating Period Option, interest on this Security shall be
computed on the basis of the actual number of days in the applicable Floating
Rate Reset Period over a 360-day year until the Fixed Rate Remarketing Date.
Interest shall be computed on the basis of a 360-day year of twelve 30-day
months from the Fixed Rate Remarketing to the Stated Maturity Date. If any
Interest Payment Date, the Stated Maturity Date or other payment date of this
Security (including any payment date in connection with the mandatory tender or
any mandatory redemption of this Security) does not fall on a Business Day, the
payment otherwise payable on that date shall be made on the next succeeding day
that is a Business Day with the same force and effect as if made on the date
the payment was originally payable, and no interest shall accrue for the period
from and after such Interest Payment Date, Stated Maturity Date or other
payment date, except in the case of an Interest Payment Date or other payment
date occurring during the Floating Rate Period.

     ii. Method of Payment. The Company will pay interest on the ROARS (except
defaulted interest) to the Persons who are registered Holders of ROARS at the
close of business on the fifteenth calendar day preceding each Interest Payment
Date (each, a "Regular Record Date"). Holders must surrender ROARS to a Paying
Agent to collect principal payments. The Company will pay principal and
interest in money of the United States that at the


                                      A-3

<PAGE>


time of payment is legal tender for payment of public and private debts. At the
Company's option, interest may be paid by check mailed to the registered
address of the Holder of this Security.

     iii. Paying Agent and Registrar. Initially, Bank One, National Association
(formerly known as The First National Bank of Chicago) (the "Trustee") will act
as Paying Agent and Registrar. The Company may change any Paying Agent,
Registrar or co-Registrar without notice.

     iv. Indenture. The Company issued the ROARS under an Indenture dated as of
December 8, 1998 between the Company and the Trustee as supplemented by the
Eighth Supplemental Indenture dated as of June 5, 2001 between the Company and
the Trustee (said Indenture, as so supplemented, the "Indenture"). This
Security is one of an issue of Securities of the Company issued under the
Indenture. The terms of the ROARS include those stated in the Indenture and
those made part of the Indenture by reference to the Trust Indenture Act of
1939 (15 U.S. Code ss.ss. 77aaa-77bbbb) as amended from time to time. The ROARS
are subject to all such terms, and Holders of the ROARS are referred to the
Indenture and such Act for a statement of them. Capitalized terms used herein
and not otherwise defined have the meanings set forth in the Indenture. The
ROARS are general unsecured and unsubordinated obligations of the Company
ranking pari passu with all of the Company's unsecured and unsubordinated
obligations. The Company may, subject to Article Four of the Eighth
Supplemental Indenture and applicable law, issue additional ROARS under the
Eighth Supplemental Indenture. The ROARS issued on the Closing Date and any
additional ROARS subsequently issued shall be treated as a single class for all
purposes of the Eighth Supplemental Indenture. The Indenture limits the ability
of the Company to incur certain secured indebtedness and to enter into certain
sale and leaseback transactions.

     v. Remarketing Agreement. Certain provisions relating to the remarketing
of the ROARS which are set forth in the Indenture are contained in a
Remarketing Agreement (the "Remarketing Agreement") between the Corporation and
Banc of America Securities LLC, as Remarketing Dealer (with any successor
Remarketing Dealer, the "Remarketing Dealer").

     vi. Mandatory Tender. The ROARS are subject to mandatory tender, and shall
be deemed tendered, to the Remarketing Dealer for purchase and remarketing, in
accordance with the terms and subject to the conditions described in the
Indenture.

     vii. Mandatory Redemption. The ROARS are subject to mandatory redemption
in accordance with the terms and subject to the conditions described in the
Indenture.

     viii. Optional Redemption. The ROARS are subject to redemption at the
election of the Company as set forth in the Indenture.

     ix. Sinking Fund. No sinking fund is provided for the ROARS.

     x. Denominations, Transfer, Exchange. The ROARS are in registered form
without coupons in denominations of $1,000 and integral multiples of $1,000. A
Holder may transfer or exchange ROARS in accordance with the Indenture. The
Registrar may require a Holder, among other things, to furnish appropriate
endorsements and transfer documents and to


                                      A-4


pay to it any taxes and fees required by law or permitted by the Indenture. The
Registrar need not transfer or exchange any ROARS or portion thereof selected
for redemption, or transfer or exchange any ROARS for a period of 15 days
before selection of such ROARS to be redeemed.

     xi. Persons Deemed Owners. The registered holder of a Security may be
treated as the owner of it for all purposes.

     xii. Unclaimed Money. If money for the payment of principal or interest
remains unclaimed for two years, the Trustee or Paying Agent will pay the money
back to the Company at its written request. After that, Holders entitled to the
money must look to the Company for payment as general creditors unless an
"abandoned property" law designates another Person.

     xiii. Amendment, Supplement, Waiver. The Company and the Trustee may,
without the consent of the holders of any outstanding ROARS, amend, waive or
supplement the Indenture or the ROARS for certain specified purposes,
including, among other things, curing ambiguities, defects or inconsistencies,
maintaining the qualification of the Indenture under the Trust Indenture Act of
1939 or making any other change that does not adversely affect the rights of
any Holder in any material respect. Other amendments and modifications of the
Indenture or the ROARS may be made by the Company and the Trustee with the
consent of the Holders of not less than a majority of the aggregate principal
amount of the outstanding Securities of all series affected, subject to certain
exceptions requiring the consent of the Holders of the particular ROARS or the
Remarketing Dealer as described in the Indenture.

     xiv. Successor Corporation. When a successor corporation assumes all the
obligations of its predecessor under the ROARS and the Indenture and the
transaction complies with the terms of Article 5 of the Indenture, the
predecessor corporation, subject to certain exceptions, will be released from
those obligations.

     xv. Defaults and Remedies. Events of Default are set forth in the
Indenture. Subject to certain limitations in the Indenture, if an Event of
Default (other than an Event of Default specified in Section 6.1(d) or (e) of
the Indenture with respect to the Company) occurs and is continuing, then the
holders of not less than 25% in aggregate principal amount of the outstanding
ROARS may, or the Trustee may, declare the principal of, plus accrued interest,
if any, to be due and payable immediately. If an Event of Default specified in
Section 6.1(d) or (e) of the Indenture with respect to the Company occurs and
is continuing, the principal of and accrued interest on all of the ROARS shall
ipso facto become and be immediately due and payable without any declaration or
other act on the part of the Trustee or any Holder. Holders of the ROARS may
not enforce the Indenture or the ROARS except as provided in the Indenture. The
Trustee may require indemnity reasonably satisfactory to it before it enforces
the Indenture or the ROARS. Subject to certain limitations, Holders of a
majority in principal amount of the then outstanding ROARS may direct the
Trustee in its exercise of any trust or power. The Trustee may withhold from
Holders of the ROARS notice of any continuing default (except a default in
payment of principal or interest or a failure to comply with Article 5 of the
Indenture) if it determines in good faith that withholding notice is in their
interests. The Company must furnish an annual compliance certificate to the
Trustee.

                                      A-5

<PAGE>


     xvi. Trustee Dealing with Company. The Trustee, in its individual or any
other capacity, may make loans to, accept deposits from, and perform services
for the Company or its Affiliates, and may otherwise deal with the Company or
its Affiliates, as if it were not Trustee.

     xvii. No Recourse Against Others. A director, officer, employee,
stockholder or beneficiary, as such, of the Company shall not have any
liability for any obligations of the Company under the ROARS or the Indenture
or for any claim based on, in respect of or by reason of, such obligations or
their creation. Each Holder of the ROARS by accepting a Security waives and
releases all such liability. The waiver and release are part of the
consideration for the issue of the ROARS.

     xviii. Defeasance. The Indenture contains provisions (which provisions
apply to this Security) for defeasance at any time of (a) the entire
indebtedness of the Company in respect of this Security and (b) certain
restrictive covenants and Defaults and Events of Default, in each case upon
compliance by the Company with certain conditions set forth therein.

     xix. Authentication. This Security shall not be valid until the Trustee
signs the certificate of authentication on the other side of this Security.

     xx. Abbreviations. Customary abbreviations may be used in the name of a
Holder of ROARS or an assignee, such as: TEN COM (= tenants in common), TENANT
(= tenants by the entireties), JT TEN (= joint tenants with right of
survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (=
Uniform Gifts to Minors Act).

     xxi. GOVERNING LAW. THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT
REGARD TO PRINCIPLES OF CONFLICTS OF LAW.

     The Company will furnish to any Holder of ROARS upon written request and
without charge a copy of the Indenture. Requests may be made to:

     THE AES CORPORATION
     1001 North 19th Street, Suite 2000
     Arlington, Virginia  22209
     Telephone:  (703) 522-1315
     Telecopy:  (703) 528-4510

     Attention:  General Counsel


                                      A-6

<PAGE>


                                ASSIGNMENT FORM

If you the holder want to assign this Security, fill in the form below and have
your signature guaranteed:

     I or we assign and transfer this Security to
                                                 -------------------------------

--------------------------------------------------------------------------------
(Insert assignee's social security or tax ID number)
                                                   -----------------------------

--------------------------------------------------------------------------------
(Print or type assignee's name, address and zip code) and irrevocably appoint
______________________________ agent to transfer this Security on the books of
the Company. The agent may substitute another to act for him.

-------------------------------------------------------------------------------


Date:                             Your signature:
     ------------------------                    -------------------------------
                                                (Sign exactly as your name
                                                appears on the other side of
                                                this Security)

Signature Guarantee:
                    ------------------------------------------------------------

     Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Registrar, which requirements include
membership or participation in the Securities Transfer Agents Medallion Program
("STAMP") or such other "signature guarantee program" as may be determined by
the Registrar in addition to, or in substitution for, STAMP, all in accordance
with the Securities Exchange Act of 1934, as amended.