Document:

Exhibit 4.1

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                            IPALCO ENTERPRISES, INC.
                                   as Issuer

                                      and

                         Bank One, National Association
                                   as Trustee

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

                                   Indenture

                         Dated as of November 14, 2001
                      ------------------------------------

                      7.375% Senior Secured Notes Due 2008

                      7.625% Senior Secured Notes Due 2011

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                               TABLE OF CONTENTS
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                                                                           PAGE

                                    RECITALS

              ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE

 Section 1.01. Definitions..................................................1
 Section 1.02. Rules of Construction.......................................15

                              ARTICLE 2 THE NOTES

 Section 2.01. Form, Dating and Denominations; Legends.....................16
 Section 2.02. Execution and Authentication; Exchange Notes;
                Additional Notes...........................................17
 Section 2.03. Registrar, Paying Agent and Authenticating Agent;
                 Paying Agent to Hold Money in Trust.......................18
 Section 2.04. Replacement Notes...........................................19
 Section 2.05. Outstanding Notes...........................................19
 Section 2.06. Temporary Notes.............................................20
 Section 2.07. Cancellation................................................20
 Section 2.08. CUSIP and CINS Numbers......................................20
 Section 2.09. Registration, Transfer and Exchange.........................21
 Section 2.10. Restrictions on Transfer and Exchange.......................23
 Section 2.11. Temporary Offshore Global Notes.............................25

                         ARTICLE 3 OPTIONAL REDEMPTION

 Section 3.01. Optional Redemption.........................................26
 Section 3.02. Method and Effect of Redemption.............................26
 Section 3.03. Sinking Fund................................................27

                              ARTICLE 4 COVENANTS

 Section 4.01. Payment of Notes............................................28
 Section 4.02. Maintenance of Office or Agency.............................28
 Section 4.03. Limitation on Distributions and Intercompany Loans..........29
 Section 4.04. Limitations on Indebtedness.................................29
 Section 4.05. Limitations on Liens........................................30
 Section 4.06. Limitation on Business Activities...........................33
 Section 4.07. Noteholders' Lists..........................................33
 Section 4.08. Certificate to Trustee......................................34
 Section 4.09. Reports by the Company......................................34

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               ARTICLE 5 CONSOLIDATION, MERGER OR SALE OF ASSETS

 Section 5.01. Limitations on Consolidation, Merger,
                 Conveyance, Sale or Lease.................................35
 Section 5.02. Successor Substituted.......................................37

                         ARTICLE 6 DEFAULT AND REMEDIES

 Section 6.01. Events of Default...........................................37
 Section 6.02. Acceleration................................................39
 Section 6.03. Other Remedies..............................................39
 Section 6.04. Waiver of Past Defaults.....................................39
 Section 6.05. Control by Majority.........................................40
 Section 6.06. Limitation on Suits.........................................40
 Section 6.07. Rights of Holders to Receive Payment........................40
 Section 6.08. Collection Suit by Trustee..................................41
 Section 6.09. Trustee May File Proofs of Claim............................41
 Section 6.10. Priorities..................................................41
 Section 6.11. Restoration of Rights and Remedies..........................42
 Section 6.12. Undertaking for Costs.......................................42
 Section 6.13. Rights and Remedies Cumulative..............................42
 Section 6.14. Delay or Omission Not Waiver................................42
 Section 6.15. Waiver of Stay, Extension or Usury Laws.....................43

                             ARTICLE 7 THE TRUSTEE

 Section 7.01. General.....................................................43
 Section 7.02. Certain Rights of Trustee...................................43
 Section 7.03. Individual Rights of Trustee................................44
 Section 7.04. Trustee's Disclaimer........................................45
 Section 7.05. Notice of Default...........................................45
 Section 7.06. Reports by Trustee to Holders...............................45
 Section 7.07. Compensation and Indemnity..................................45
 Section 7.08. Replacement of Trustee......................................46
 Section 7.09. Successor Trustee by Merger.................................47
 Section 7.10. Eligibility.................................................47
 Section 7.11. Money Held in Trust.........................................47

                       ARTICLE 8 DEFEASANCE AND DISCHARGE

 Section 8.01. Satisfaction and Discharge of Indenture.....................47
 Section 8.02. Defeasance and Discharge of Indenture.......................49
 Section 8.03. Defeasance of Certain Obligations...........................50
 Section 8.04. Application of Trust Money..................................52
 Section 8.05. Repayment to Company........................................52
 Section 8.06. Reinstatement...............................................52

                 ARTICLE 9 AMENDMENTS, SUPPLEMENTS AND WAIVERS

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 Section 9.01. Amendments Without Consent of Holders.......................53
 Section 9.02. Amendments with Consent of Holders..........................53
 Section 9.03. Effect of Consent...........................................54
 Section 9.04. Trustee's Rights and Obligations............................55
 Section 9.05. Conformity with Trust Indenture Act.........................55
 Section 9.06. Payments for Consents.......................................55

                            ARTICLE 10 MISCELLANEOUS

 Section 10.01. Trust Indenture Act of 1939................................55
 Section 10.02. Noteholder Communications; Noteholder Actions..............56
 Section 10.03. Notices....................................................56
 Section 10.04. Certificate and Opinion as to Conditions Precedent.........57
 Section 10.05. Statements Required in Certificate or Opinion..............57
 Section 10.06. Payment Date Other Than a Business Day.....................58
 Section 10.07. Governing Law..............................................58
 Section 10.08. No Adverse Interpretation of Other Agreements..............58
 Section 10.09. Successors.................................................58
 Section 10.10. Duplicate Originals........................................58
 Section 10.11. Separability...............................................58
 Section 10.12. Table of Contents and Headings.............................58
 Section 10.13. No Liability of Directors, Officers, Employees,
                  Incorporators and Stockholders...........................59

                       ARTICLE 11 SECURITY AND COLLATERAL

 Section 11.01. Pledge Agreement...........................................59
 Section 11.02. Recording and Opinions.....................................59
 Section 11.03. Release of Collateral......................................60
 Section 11.04. Certificates of the Company................................60
 Section 11.05. Certificates of the Trustee................................61
 Section 11.06. Authorization of Actions to be Taken by the
                  Collateral Agent Under the Pledge Agreement..............61
 Section 11.07. Authorization of Receipt of Refunds by the Trustee
                  Under the Pledge Agreement..61
 Section 11.08. Termination of Security Interest...........................61

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                                   EXHIBITS

EXHIBIT A-1          Form of 2008 Note
EXHIBIT A-2          Form of 2011 Note
EXHIBIT B            Restricted Legend
EXHIBIT C            DTC Legend
EXHIBIT D            Regulation S Certificate
EXHIBIT E            Rule 144A Certificate
EXHIBIT F            Certificate of Beneficial Ownership
EXHIBIT G            Temporary Offshore Global Note Legend

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         INDENTURE, dated as of November 14, 2001, between IPALCO Enterprises,
Inc., an Indiana corporation, as the Company, and Bank One, National
Association, a national banking association, as Trustee.

                                    RECITALS

         The Company has duly authorized the execution and delivery of the
Indenture to provide for the issuance of two series of senior secured notes,
one series designated as the "7.375% Senior Secured Notes Due 2008" (the "2008
Notes") in an aggregate principal amount of $375,000,000, and one series
designated the "7.625% Senior Secured Notes Due 2011" (the "2011 Notes") in an
aggregate principal amount of $375,000,000 and, if and when issued, any
Additional Notes, together with any Exchange Notes issued therefor as provided
herein (collectively the "Notes"). All things necessary to make the Indenture a
valid agreement of the Company, in accordance with its terms, have been done,
and the Company has done all things necessary to make the Notes (in the case of
the Additional Notes, when duly authorized), when executed by the Company and
authenticated and delivered by the Trustee and duly issued by the Company, the
valid obligations of the Company as hereinafter provided.

         This Indenture is subject to, and will be governed by, the provisions
of the Trust Indenture Act that are required to be a part of and govern
indentures qualified under the Trust Indenture Act.

                           THIS INDENTURE WITNESSETH

         For and in consideration of the premises and the purchase of the Notes
by the Holders thereof, the parties hereto covenant and agree, for the equal
and proportionate benefit of all Holders, as follows:

                                   ARTICLE 1
                   DEFINITIONS AND INCORPORATION BY REFERENCE

     Section 1.01. Definitions.

         "Additional Interest" means additional interest owed to the Holders
pursuant to a Registration Rights Agreement.

         "Additional Notes" means any series of Notes issued under the
Indenture in addition to the Original Notes, including any Exchange Notes
issued in exchange for such Additional Notes, having the same terms in all
respects as any series of the Original Notes.

         "Adjusted Total Capital" of any Person means, as of any date, the sum
(without duplication) of:

          (1) Indebtedness for Borrowed Money;

          (2) preferred stock and Preferred Securities of such Person and its
     consolidated Subsidiaries;

          (3) consolidated stockholder's equity of such Person and its
     consolidated Subsidiaries (excluding any preferred stock in stockholder's
     equity); and

          (4) any excess of the value of the assets of the Company when
     acquired by AES over the book value of such assets at such time, which for
     the purpose of this definition is agreed to be $1.5 billion.

         "AES" means the AES Corporation, a Delaware corporation, and its
successors and assigns.

         "Affiliate" means, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under direct or indirect
common control with, such Person. For purposes of this definition, "control"
(including, with correlative meanings, the terms "controlling," "controlled by"
and "under common control with") with respect to any Person, means the
possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of such Person, whether through the
ownership of voting securities, by contract or otherwise.

         "Agent" means any Registrar, Paying Agent or Authenticating Agent.

         "Agent Member" means a member of, or a participant in, the Depositary.

         "Authenticating Agent" refers to a Person engaged to authenticate the
Notes in the stead of the Trustee.

         "bankruptcy default" has the meaning assigned to such term in Section
6.01.

         "Board of Directors" means the board of directors or comparable
governing body of the Company, or any committee thereof duly authorized to act
on its behalf.

         "Board Resolution" means a resolution duly adopted by the Board of
Directors which is certified by the Secretary or an Assistant Secretary of the
Company and remains in full force and effect as of the date of its
certification.

         "Business Day" means any day except a Saturday, Sunday or other day on
which commercial banks in New York City or in the city where the Corporate
Trust Office of the Trustee is located are authorized by law to close.

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         "Capitalized Lease Obligations" means all lease obligations of the
Company and its Subsidiaries which, under GAAP, are or will be required to be
capitalized, in each case taken at the amount of the lease obligation accounted
for as indebtedness in conformity with those principles.

         "Certificate of Beneficial Ownership" means a certificate
substantially in the form of Exhibit F.

         "Certificated Note" means a Note in registered individual form without
interest coupons.

         "Clearstream" means Clearstream Banking SA and its successors.

         "Collateral" has the meaning specified in the Pledge Agreement.

         "Collateral Agent" has the meaning specified in the Pledge Agreement.

         "Commission" means the Securities and Exchange Commission.

         "Company" means the party named as such in the first paragraph of the
Indenture or any successor obligor under the Indenture and the Notes pursuant
to Section 5.01.

         "Comparable Treasury Issue" means, with respect to any Notes of any
series to be redeemed, the United States Treasury security selected by an
independent investment banking institution of international standing appointed
by the Company as having a maturity comparable to the remaining term of such
Notes that would be used, at the time of selection and in accordance with
customary financial practice, in pricing new issues of corporate debt
securities of comparable maturity to the remaining term of such securities.

         "Comparable Treasury Price" means, with respect to any Comparable
Treasury Issue:

          (1) the average of the bid and asked prices for the Comparable
     Treasury Issue, expressed in each case as a percentage of its principal
     amount, on the third Business Day preceding the redemption date of the
     Notes to be redeemed, as set forth in the daily statistical release (or
     any successor release) published by the Federal Reserve Bank of New York
     and designated "Composite 3:30 p.m. Quotations for U.S. Government
     Securities"; or

          (2) if such release (or any successor release) is not published or
     does not contain such prices on such Business Day, the average, as
     determined by the Company, of the bid and asked prices for the Comparable
     Treasury Issue, expressed in each case as a percentage of its principal
     amount and quoted in writing to the Company by a primary U.S.

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     government securities dealer in New York City appointed by the Company at
     5:00 p.m. on the third Business Day preceding such redemption date.

         "Consolidated Current Liabilities" means the consolidated current
liabilities of the Company and its Subsidiaries, but excluding the current
portion of long term Indebtedness which would otherwise be included in it, as
determined on a consolidated basis in accordance with GAAP.

         "Consolidated Debt" means, at any time, the sum of the aggregate
outstanding principal amount of all Indebtedness for Borrowed Money (including,
without limitation, the principal component of Capitalized Lease Obligations,
but excluding Permitted Debt, Currency, Interest Rate or Commodity Agreements
and all Consolidated Current Liabilities and Project Finance Debt) of the
Company and its Subsidiaries, as determined on a consolidated basis in
conformity with GAAP.

         "Consolidated EBITDA" means, for any period, the sum of the amounts
for that period of the Company's:

          (1) Consolidated Net Income;

          (2) distributions paid, accrued or scheduled to be paid in respect of
     any Preferred Securities or other capital stock to the extent deducted in
     calculating Consolidated Net Income;

          (3) Consolidated Interest Expense plus interest paid, accrued or
     scheduled to be paid or to be accrued in respect of any Permitted Debt;

          (4) income taxes and deferred taxes (other than income taxes either
     positive or negative attributable to extraordinary and non-recurring gains
     or losses or sales of assets);

          (5) depreciation expense;

          (6) amortization expense; and

          (7) all other non-cash items reducing Consolidated Net Income, less
     all non-cash items increasing Consolidated Net Income, all as determined
     on a consolidated basis in conformity with GAAP,

provided that, to the extent that the Company has any Subsidiary that is not a
wholly-owned Subsidiary, Consolidated EBITDA will be reduced by an amount equal
to the Consolidated Net Income of such Subsidiary multiplied by the quotient
of: (A) the number of shares of outstanding common stock of such Subsidiary not
owned on the relevant Measurement Date by the Company or any Subsidiary of the
Company, divided by (B) the total number of shares of outstanding common stock
of such Subsidiary on the relevant Measurement Date.

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         "Consolidated Interest Expense" means, for any period, the aggregate
amount of interest in respect of Indebtedness for Borrowed Money (excluding
interest expense related to Permitted Debt and including amortization of
original issue discount on any Indebtedness and the interest portion of any
deferred payment obligation, calculated in accordance with the effective
interest method of accounting; and all commissions, discounts and other fees
and charges owed with respect to bankers' acceptance financing) and the net
costs associated with Interest Rate Agreements and all but the principal
component of rentals in respect of Capitalized Lease Obligations, paid, accrued
or scheduled to be paid or to be accrued by the Company and each of its
Subsidiaries during such period, excluding, however, any amount of such
interest of any Subsidiary of the Company if the net income (or loss) of such
Subsidiary is excluded from the calculation of Consolidated Net Income for such
Subsidiary pursuant to clause (2) of the definition of Consolidated Net Income
(but only in the same proportion as the net income (or loss) of such Subsidiary
is excluded), less consolidated interest income, all as determined on a
consolidated basis in conformity with GAAP; provided that, to the extent that
the Company has any Subsidiary that is not a wholly-owned subsidiary,
Consolidated Interest Expense shall be reduced by an amount equal to such
interest expense of such Subsidiary multiplied by the quotient of: (A) the
number of shares of outstanding common stock of such Subsidiary not owned on
the relevant Measurement Date by the Company or any Subsidiary of the Company,
divided by (B) the total number of shares of outstanding common stock of such
Subsidiary on the relevant Measurement Date.

         "Consolidated Net Income" means, for any period, the aggregate of the
net income (or loss) of the Company and its Subsidiaries for such period, as
determined on a consolidated basis in conformity with GAAP; provided that the
following items will be excluded from any calculation of Consolidated Net
Income (without duplication):

          (1) the net income (or loss) of any Person (other than a Subsidiary)
     in which any other Person has a joint interest, except to the extent of
     the amount of dividends or other distributions actually paid to the
     Company or another Subsidiary of the Company during such period;

          (2) the net income (or loss) of any Subsidiary to the extent that the
     declaration or payment of dividends or similar distributions by such
     Subsidiary of such net income is not at the time permitted by the
     operation of the terms of its charter or any agreement, instrument,
     judgment, decree, order, statute, rule or governmental regulation or
     license;

          (3) all extraordinary gains and extraordinary losses, merger-related
     expenses and one-time expenses, cash or noncash, relating to restructuring
     efforts; and

          (4) all gains and losses from discontinued operations.

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         "Consolidated Net Tangible Assets" means at any time, the total of all
assets (including revaluations of those assets as a result of commercial
appraisals, price level restatement or otherwise) appearing on the most
recently available consolidated balance sheet of the Company and its
Subsidiaries (provided that such balance sheet is of a date not more than 60
days prior to the date of creation of the relevant Lien) prepared in accordance
with GAAP, net of applicable reserves and deductions, but excluding goodwill,
trade names, trademarks, patents, unamortized debt discount and all other like
intangible assets (which term shall not be construed to include such
revaluations), less the aggregate of the Consolidated Current Liabilities of
the Company appearing on such balance sheet.

         "Corporate Trust Office" means the office of the Trustee at which the
corporate trust business of the Trustee is principally administered, which at
the date of the Indenture is located at 111 Monument Circle, Indianapolis,
Indiana 46204.

         "Currency, Interest Rate or Commodity Agreements" means an agreement
or transaction involving any currency, interest rate or energy price or
volumetric swap, cap or collar arrangement, forward exchange transaction,
option, warrant, forward rate agreement, futures contract or other derivative
instrument of any kind for the hedging or management of foreign exchange,
interest rate or energy price or volumetric risks, it being understood, for
purposes of this definition, that the term "energy" will include, without
limitation, coal, gas, oil and electricity.

         "Default" means, with respect to any series of Notes any event that
is, or after notice or passage of time or both would be, an Event of Default.

         "Depositary" means the depositary of each Global Note, which will
initially be DTC.

         "Distribution" means any dividend, distribution or payment (including
by way of redemption, repurchase, retirement, return or repayment) in respect
of shares of capital stock of the Company, or any purchase of any shares of
capital stock of AES, excluding any contract adjustment payments under
contracts to purchase common stock of the Company, AES or any of its affiliates
(which common stock was not held as an asset of the Company) entered into in
connection with the issuance of any Permitted Debt.

         "DTC" means The Depository Trust Company, a New York corporation, and
its successors.

         "DTC Legend" means the legend set forth in Exhibit C.

         "Effectiveness Deadline" has the meaning ascribed to such term in the
Notes.

         "Euroclear" means Euroclear Bank S.A./N.V., and its successors or
assigns, as operator of the Euroclear System.

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         "Event of Default", with respect to any series of Notes, has the
meaning assigned to such term in Section 6.01.

         "Exchange Act" means the Securities Exchange Act of 1934.

         "Exchange Notes" means the Notes of the Company issued pursuant to the
Indenture in exchange for, and in an aggregate principal amount equal to, the
applicable series of Initial Notes or any Initial Additional Notes of that
series in compliance with the terms of a Registration Rights Agreement and
containing terms substantially identical to the applicable series of Initial
Notes or any Initial Additional Notes of that series (except that such Exchange
Notes will be registered under the Securities Act and will not be subject to
transfer restrictions or bear the Restricted Legend).

         "Exchange Offer" means an offer by the Company to the Holders of the
Initial Notes or any Initial Additional Notes to exchange outstanding Notes for
Exchange Notes, as provided for in a Registration Rights Agreement.

         "Exchange Offer Registration Statement" means the Exchange Offer
Registration Statement as defined in a Registration Rights Agreement.

         "Excluded Subsidiary" means any Subsidiary of the Company:

          (1) in respect of which neither the Company nor any Subsidiary of the
     Company (other than another Excluded Subsidiary) has undertaken any legal
     obligation to give any guarantee for the benefit of the holders of any
     Indebtedness for Borrowed Money (other than to another member of the
     Group) other than in respect of any statutory obligation and the
     Subsidiaries of which are all Excluded Subsidiaries; and

          (2) which has been designated as such by the Company by written
     notice to the Trustee; provided that the Company may give written notice
     to the Trustee at any time that any Excluded Subsidiary is no longer an
     Excluded Subsidiary whereupon it shall cease to be an Excluded Subsidiary.

         "Expiration Date" has the meaning ascribed to such term in Section
5.01 hereof.

         "GAAP" means generally accepted accounting principles in the United
States of America as in effect from time to time.

         "Global Note" means a Note in registered global form without interest
coupons.

         "Global Note Legend" means the legend set forth in Exhibit G.

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         "Group" means the Company and its Subsidiaries and "member of the
Group" shall be construed accordingly.

         "Holder" or "Noteholder" means the registered holder of any Note.

         "Incur" means, with respect to any Indebtedness, to incur, create,
issue, assume or guarantee or otherwise become liable for such Indebtedness;
provided that neither the accrual of interest (whether such interest is payable
in cash or in kind) nor the accretion of original issue discount shall be
considered an "incurrence" of Indebtedness.

         "Indebtedness" means, with respect to the Company or any of its
Subsidiaries at any date of determination (without duplication):

          (1) all Indebtedness for Borrowed Money (excluding any credit which
     is available but undrawn);

          (2) all obligations in respect of letters of credit (including
     reimbursement obligations with respect to letters of credit);

          (3) all obligations to pay the deferred and unpaid purchase price of
     property or services, which purchase price is due more than six months
     after the date of placing such property in service or taking delivery and
     title to the property or the completion of such services, except trade
     payables;

          (4) all Capitalized Lease Obligations;

          (5) all indebtedness of other persons secured by a mortgage, charge,
     lien, pledge or other security interest on any asset of the Company or any
     of its Subsidiaries, whether or not such indebtedness is assumed; provided
     that the amount of such Indebtedness must be the lesser of: (a) the fair
     market value of such asset at such date of determination and (b) the
     amount of the secured indebtedness;

          (6) all indebtedness of other persons of the types specified in the
     preceding clauses (1) through (5), to the extent such indebtedness is
     guaranteed by the Company or any of its Subsidiaries; and

          (7) to the extent not otherwise included in this definition, net
     obligations under Currency, Interest Rate or Commodity Agreements.

         The amount of Indebtedness at any date will be the outstanding balance
at such date of all unconditional obligations as described above and, upon the
occurrence of the contingency giving rise to the obligation, the maximum
liability of any contingent obligations of the types specified in the preceding
clauses (1) through (7) at such date; provided that the amount outstanding at
any time of any Indebtedness issued with original issue discount is the face
amount of such

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Indebtedness less the remaining unamortized portion of the original issue
discount of such Indebtedness at such time as determined in conformity with
GAAP.

         "Indebtedness For Borrowed Money" means any indebtedness (whether
being principal, premium, interest or other amounts) for:

          (1) money borrowed;

          (2) payment obligations under or in respect of any trade acceptance
     or trade acceptance credit; or

          (3) any notes, bonds, loan stock or other debt securities offered,
     issued or distributed whether by way of public offer, private placement,
     acquisition consideration or otherwise and whether issued for cash or in
     whole or in part for a consideration other than cash (including, without
     limitation, Permitted Debt);

provided, however, in each case, that such term will exclude:

          (a) any indebtedness relating to any accounts receivable
     securitizations;

          (b) any Indebtedness of the type permitted to be secured by Liens
     pursuant to clause (12) Section 4.05 hereof; and

          (c) any Preferred Securities which are issued and outstanding on the
     date of original issue of the Notes or any extension, renewal or
     replacement (or successive extensions, renewals or replacements), as a
     whole or in part, of any such existing Preferred Securities, for amounts
     not exceeding the principal amount or liquidation preference of the
     Preferred Securities so extended, renewed or replaced.

         "Indenture" means this indenture, as amended or supplemented from time
to time.

         "Initial Additional Notes" means Additional Notes of any series issued
in an offering not registered under the Securities Act and any Notes of that
series issued in replacement thereof, but not including any Exchange Notes of
that series issued in exchange therefor.

         "Initial Notes" means the 2008 Notes and the 2011 Notes issued on the
Issue Date and any Notes of each series issued in replacement thereof, but not
including any Exchange Notes of each series issued in exchange therefor.

         "Initial Purchasers" means the initial purchasers party to a purchase
agreement with the Company relating to the sale of the Initial Notes or Initial
Additional Notes by the Company.

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         "Interest", in respect of the Notes of any series, unless the context
otherwise requires, refers to interest and Additional Interest, if any on such
series of Notes.

         "Interest Coverage Ratio" means, with respect to the Company on any
Measurement Date, the ratio of:

          (1) the aggregate amount of Consolidated EBITDA of the Company for
     the four fiscal quarters for which financial information in respect of
     Consolidated EBITDA is available immediately prior to such Measurement
     Date to

          (2) the aggregate Consolidated Interest Expense during such four
     fiscal quarters.

         "Interest Payment Date" or "interest payment date" has the meaning
ascribed to such term in the Notes.

         "Investments" in any Person means any loan or advance to, any net
payment on a guarantee of, any acquisition of capital stock, equity interest,
obligation or other security of, or capital contribution or other investment
in, such Person. Investments exclude advances to customers and suppliers in the
ordinary course of business.

         "IPL" means Indianapolis Power & Light Company, an Indiana corporation
and Subsidiary of the Company.

         "Issue Date" means the date on which the Original Notes are originally
issued under the Indenture.

         "Leverage Ratio" means the ratio of Consolidated Debt to Adjusted
Total Capital, calculated on the basis of the most recently available
consolidated balance sheet of the Company and its consolidated Subsidiaries
(provided that such balance sheet is as of a date not more than 60 days prior
to a Measurement Date) prepared in accordance with GAAP.

         "Lien" means any mortgage, lien, pledge, security interest or other
encumbrance; provided, however, that the term "Lien" does not mean any
easements, rights-of-way, restrictions and other similar encumbrances and
encumbrances consisting of zoning restrictions, leases, subleases, restrictions
on the use of property or defects in title.

         "Measurement Date" means the record date for any Distribution or the
date of any loan, as the case may be.

         "Moody's" means Moody's Investors Service, Inc., and any of its
subsidiaries or successors.

                                      10
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         "Non-U.S. Person" means a Person that is not a U.S. person, as defined
in Regulation S.

         "Notes" has the meaning assigned to such term in the Recitals.

         "Obligations" has the meaning specified in Section 11.01.

         "Offer to Purchase" has the meaning ascribed to such term in Section
5.01 hereof.

         "Officer" means the chairman of the Board of Directors, the president
or chief executive officer, any vice president, the chief financial officer,
the treasurer or any assistant treasurer, or the secretary or any assistant
secretary, of the Company.

         "Officers' Certificate" means a certificate signed in the name of the
Company (i) by the chairman of the Board of Directors, the president or chief
executive officer or a vice president and (ii) by the chief financial officer,
the treasurer or any assistant treasurer or the secretary or any assistant
secretary.

         "Offshore Global Note" means a Global Note representing Notes issued
and sold pursuant to Regulation S.

         "Opinion of Counsel" means a written opinion signed by legal counsel,
who may be an employee of or counsel to the Company, satisfactory to the
Trustee.

         "Original Notes" means the Initial Notes and any Exchange Notes issued
in exchange therefor.

         "Paying Agent" refers to a Person engaged to perform the obligations
of the Trustee in respect of payments made or funds held hereunder in respect
of the Notes.

         "Permanent Offshore Global Note" means an Offshore Global Note that
does not bear the Temporary Offshore Global Note Legend.

         "Permitted Debt" means Indebtedness for Borrowed Money issued in
connection with a contract or contracts to purchase from the Company common
stock of the Company, AES or any Affiliate of AES (which common stock was not
held as an asset of the Company) for an aggregate amount equal to the aggregate
principal amount of such Indebtedness for Borrowed Money.

         "Pledge Agreement" means the Pledge Agreement dated as of the date
hereof, made by the Company in favor of Bank One, National Association, as
Collateral Agent.

                                      11
<PAGE>

         "Pledged Stock" means all of the outstanding common stock of IPL and
any proceeds therefrom pledged by the Company to the Collateral Agent for the
benefit of the Holders of the Notes.

         "Person" means an individual, a corporation, a partnership, a limited
liability company, an association, a trust or any other entity, including a
government or political subdivision or an agency or instrumentality thereof.

         "Preferred Securities" means, without duplication, any trust preferred
or preferred securities or related debt or guaranties of the Company or any of
its Subsidiaries.

         "Project Finance Debt" means:

          (1) any Indebtedness to finance or refinance the ownership,
     acquisition, development, design, engineering, procurement, construction,
     servicing, management and/or operation of any project or asset which is
     incurred by an Excluded Subsidiary; and

          (2) any Indebtedness to finance or refinance the ownership,
     acquisition, development, design, engineering, procurement, construction,
     servicing, management and/or operation of any project or asset in respect
     of which the person or persons to whom any such Indebtedness is or may be
     owed by the relevant borrower (whether or not a member of the Group) has
     or have no recourse whatsoever to any member of the Group (other than an
     Excluded Subsidiary) for the repayment of that Indebtedness other than:
     (a) recourse to such member of the Group for amounts limited to the cash
     flow or net cash flow (other than historic cash flow or historic net cash
     flow) from, or ownership interests or other investments in, such project
     or asset; and/or (b) recourse to such member of the Group for the purpose
     only of enabling amounts to be claimed in respect of such Indebtedness in
     an enforcement of any encumbrance given by such member of the Group over
     such project or asset or the income, cash flow or other proceeds deriving
     from the project (or given by any shareholder or the like, or other
     investor in, the borrower or in the owner of such project or asset over
     its shares or the like in the capital of, or other investment in, the
     borrower or in the owner of such project or asset) to secure such
     Indebtedness, provided that the extent of such recourse to such member of
     the Group is limited solely to the amount of any recoveries made on any
     such enforcement; and/or (c) recourse to such borrower generally, or
     directly or indirectly to a member of the Group, under any form of
     assurance, indemnity, undertaking or support, which recourse is limited to
     a claim for damages (other than liquidated damages and damages required to
     be calculated in a specified way) for breach of an obligation (not being a
     payment obligation or an obligation to procure payment by another or an
     indemnity in respect of a payment obligation, or any obligation to comply
     or to procure compliance by another with any

                                      12
<PAGE>

     financial ratios or other tests of financial condition) by the person
     against which such recourse is available.

         "Purchase Date" has the meaning ascribed to such term in Section 5.01
hereof.

         "Rating" means, for each Rating Agency, the credit rating assigned to
the Notes by such Rating Agency.

         "Rating Agency" means S&P and Moody's, and any of their respective
subsidiaries or successors, or, in any case, if such person ceases to rate any
series of notes for reasons outside the control of the Company, any other
"nationally recognized statistical rating organization" (within the meaning of
Rule 15c3-l(c)(2)(vi)(F) under the Securities Exchange Act of 1934, as amended)
selected by the Company as a replacement Rating Agency.

         "Redemption Price" has the meaning assigned to such term in Section
3.01.

         "Register" has the meaning assigned to such term in Section 2.09.

         "Registrar" means a Person engaged to maintain the Register.

         "Registration Rights Agreement" means (i) the Registration Rights
Agreement dated the date hereof between the Company and the Initial Purchasers
party thereto with respect to the Initial Notes, and (ii) with respect to any
Additional Notes, any registration rights agreements between the Company and
the Initial Purchasers party thereto relating to rights given by the Company to
the purchasers of Additional Notes to register such Additional Notes or
exchange them for Notes registered under the Securities Act.

         "Regular Record Date" for the interest payable on any Interest Payment
Date means the close of business on May 1 or November 1 (whether or not a
Business Day) immediately preceding such Interest Payment Date.

         "Regulation S" means Regulation S under the Securities Act.

         "Regulation S Certificate" means a certificate substantially in the
form of Exhibit D hereto.

         "Responsible Officer", when used with respect to the Trustee, means
any officer within the Corporate Trust Office, including any vice president,
assistant vice president, assistant secretary (if any), treasurer, assistant
treasurer or any other officer of the Trustee customarily performing functions
similar to those performed by any of the above designated officers; and also
means, with respect to a particular corporate trust mater, any other officer to
whom such matter is referred because of such officer's knowledge of and
familiarity with the particular subject.

                                      13
<PAGE>

         "Restricted Legend" means the legend set forth in Exhibit B.

         "Restricted Period" means the relevant 40-day distribution compliance
period as defined in Regulation S.

         "Rule 144A" means Rule 144A under the Securities Act.

         "Rule 144A Certificate" means (i) a certificate substantially in the
form of Exhibit E hereto or (ii) a written certification addressed to the
Company and the Trustee to the effect that the Person making such certification
(x) is acquiring such Note (or beneficial interest) for its own account or one
or more accounts with respect to which it exercises sole investment discretion
and that it and each such account is a qualified institutional buyer within the
meaning of Rule 144A, (y) is aware that the transfer to it or exchange, as
applicable, is being made in reliance upon the exemption from the provisions of
Section 5 of the Securities Act provided by Rule 144A, and (z) acknowledges
that it has received such information regarding the Company as it has requested
pursuant to Rule 144A(d)(4) or has determined not to request such information.

         S&P means Standard & Poor's Ratings Group, and any of its subsidiaries
or successors.

         "Securities Act" means the Securities Act of 1933.

         "Shelf Registration Statement" means the Shelf Registration Statement
as defined in a Registration Rights Agreement.

         "Significant Subsidiary" means, at any particular time, any Subsidiary
of the Company whose gross assets or gross revenues (having regard to the
Company's direct and/or indirect beneficial interest in the shares, or the
like, of that Subsidiary) represent at least 25% of the consolidated gross
assets or, as the case may be, consolidated gross revenues of the Company.

         "Subsidiary" means, with respect to any person, any corporation,
association, partnership, limited liability company or other business entity of
which 50% or more of the total voting power of shares of capital stock or other
interests (including partnership interests) entitled (without regard to the
occurrence of any contingency) to vote in the election of directors, managers
or trustees is at the time owned, directly or indirectly, by (1) such person,
(2) such person and one or more Subsidiaries of such person or (3) one or more
Subsidiaries of such person.

         "Surviving Person" has the meaning ascribed to such term in Section
5.01 hereof.

         "Temporary Offshore Global Note" means an Offshore Global Note that
bears the Temporary Offshore Global Note Legend.

                                      14
<PAGE>

         "Temporary Offshore Global Note Legend" means the legend set forth in
Exhibit G.

         "Treasury Yield" means, with respect to any Notes of any series to be
redeemed, the rate per annum equal to the semiannual equivalent yield to
maturity of the Comparable Treasury Issue for such series of Notes, assuming a
price for the Comparable Treasury Issue (expressed as a percentage of its
principal amount) equal to its Comparable Treasury Price.

         "Trustee" means the party named as such in the first paragraph of the
Indenture or any successor trustee under the Indenture pursuant to Article 7.

         "Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939,
as amended.

         "U.S. Global Note" means a Global Note that bears the Restricted
Legend representing Notes issued and sold pursuant to Rule 144A.

         "U.S. Government Obligations" means any:

          (1) security which is: (a) a direct obligation of the United States
     for the payment of which the full faith and credit of the United States is
     pledged or (b) an obligation of a person controlled or supervised by and
     acting as an agency or instrumentality of the United States the payment of
     which is unconditionally guaranteed as a full faith and credit obligation
     by the United States, which, in the case of clause (a) or (b), is not
     callable or redeemable at the option of the issuer of the obligation, and

          (2) depositary receipt issued by a bank (as defined in the Securities
     Act) as custodian with respect to any security specified in clause (1)
     above and held by such bank for the account of the holder of such
     depositary receipt or with respect to any specific payment of principal of
     or interest on any such security held by any such bank, provided that
     (except as required by law) such custodian is not authorized to make any
     deduction from the amount payable to the holder of such depositary receipt
     from any amount received by the custodian in respect of the U.S.
     Government Obligation or the specific payment of interest on or principal
     of the U.S. Government Obligation evidenced by such depositary receipt.

         Section 1.02. Rules of Construction. Unless the context otherwise
requires or except as otherwise expressly provided,

          (1) an accounting term not otherwise defined has the meaning assigned
     to it in accordance with GAAP;

                                      15
<PAGE>

          (2) "herein," "hereof" and other words of similar import refer to the
     Indenture as a whole and not to any particular Section, Article or other
     subdivision;

          (3) all references to Sections or Articles or Exhibits refer to
     Sections or Articles or Exhibits of or to the Indenture unless otherwise
     indicated;

          (4) references to agreements or instruments, or to statutes or
     regulations, are to such agreements or instruments, or statutes or
     regulations, as amended from time to time (or to successor statutes and
     regulations);

          (5) in the event that a transaction meets the criteria of more than
     one category of permitted transactions or listed exceptions the Company
     may classify such transaction as it, in its sole discretion, determines;
     and

          (6) all other terms used herein which are defined in the Trust
     Indenture Act, either directly or by reference therein, have the meaning
     assigned to them therein to the extent applicable.

                                   ARTICLE 2
                                   THE NOTES

         Section 2.01. Form, Dating and Denominations; Legends. (a) The Notes
and the Trustee's certificate of authentication related thereto will be
substantially in the form attached as Exhibit A1 with respect to the 2008 Notes
and Exhibit A2 with respect to the 2011 Notes. The terms and provisions
contained in the form of each series of Notes annexed as Exhibits A1 and A2
constitute, and are hereby expressly made, a part of the Indenture. Each series
of Notes may have notations, legends or endorsements required by law, rules of
or agreements with national securities exchanges to which the Company is
subject, or usage. Each Note will be dated the date of its authentication. Each
series of Notes will be issuable in denominations of $1,000 in principal amount
and any multiple of $1,000 in excess thereof.

         (b) (1) Except as otherwise provided in paragraph (c), Section 2.10
(b)(3) or (c), or Section 2.09(b)(4), each Initial Note or Initial Additional
Note (other than a Permanent Offshore Note) will bear the Restricted Legend.

         (2) Each Global Note, whether or not an Initial Note or Additional
Note, will bear the DTC Legend.

         (3) Each Temporary Offshore Global Note will bear the Temporary
Offshore Global Note Legend.

                                      16
<PAGE>

         (4) Initial Notes and Initial Additional Notes offered and sold in
reliance on Regulation S will be issued as provided in Section 2.11(a).

         (5) Exchange Notes will be issued, subject to Section 2.09(b), in the
form of one or more Global Notes.

         (c) (1) If the Company determines (upon the advice of counsel and such
other certifications and evidence as the Company may reasonably require) that a
Note is eligible for resale pursuant to Rule 144(k) under the Securities Act
(or a successor provision) and that the Restricted Legend is no longer
necessary or appropriate in order to ensure that subsequent transfers of the
Note (or a beneficial interest therein) are effected in compliance with the
Securities Act, or

         (2) after an Initial Note or any Initial Additional Note is

               (x) sold pursuant to an effective registration statement under
          the Securities Act, pursuant to the Registration Rights Agreement or
          otherwise, or

               (y) validly tendered for exchange into an Exchange Note pursuant
          to an Exchange Offer,

the Company may instruct the Trustee to cancel the Note and issue to the Holder
thereof (or to its transferee) a new Note of like tenor and amount, registered
in the name of the Holder thereof (or its transferee), that does not bear the
Restricted Legend, and the Trustee will comply with such instruction.

         (d) By its acceptance of any Note bearing the Restricted Legend (or any
beneficial interest in such a Note), each Holder thereof and each owner of a
beneficial interest therein acknowledges the restrictions on transfer of such
Note (and any such beneficial interest) set forth in this Indenture and in the
Restricted Legend and agrees that it will transfer such Note (and any such
beneficial interest) only in accordance with the Indenture and such legend.

         Section 2.02. Execution and Authentication; Exchange Notes; Additional
Notes. (a) An Officer shall execute the Notes for the Company by facsimile or
manual signature in the name and on behalf of the Company. If an Officer whose
signature is on a Note no longer holds that office at the time the Note is
authenticated, the Note will still be valid.

         (b) A Note will not be valid until the Trustee manually signs the
certificate of authentication on the Note, with the signature conclusive
evidence that the Note has been authenticated under the Indenture.

         (c) At any time and from time to time after the execution and delivery
of the Indenture, the Company may deliver Notes of any series executed by the
Company to the Trustee for authentication. The Trustee will authenticate and
deliver

                                      17
<PAGE>

          (i) 2008 Notes for original issue in the aggregate principal amount
     not to exceed $375,000,000, and 2011 Notes for original issue in the
     aggregate principal amount not to exceed $375,000,000,

          (ii) Initial Additional Notes of any series from time to time for
     original issue in aggregate principal amounts specified by the Company,
     and

          (iii) Exchange Notes of any series from time to time for issue in
     exchange for a like principal amount of the applicable series of Initial
     Notes or Initial Additional Notes

after the following conditions have been met:

               (1) Receipt by the Trustee of an Officers' Certificate
          specifying

                    (A) the amount and series of Notes to be authenticated and
               the date on which such Notes are to be authenticated,

                    (B) whether such Notes are to be Initial Notes or,
               Additional Notes or Exchange Notes,

                    (C) in the case of Initial Additional Notes, that the
               issuance of such Notes does not contravene any provision of
               Article 4, and

                    (D) other information the Company may determine to include
               or the Trustee may reasonably request.

               (2) In the case of Initial Additional Notes, receipt by the
          Trustee of an Opinion of Counsel confirming that the Holders of the
          outstanding Notes will be subject to federal income tax in the same
          amounts, in the same manner and at the same times as would have been
          the case if such Additional Notes were not issued.

               (3) In the case of Exchange Notes, effectiveness of an Exchange
          Offer Registration Statement and consummation of the exchange offer
          thereunder (and receipt by the Trustee of an Officers' Certificate to
          that effect). Initial Notes or Initial Additional Notes exchanged for
          Exchange Notes will be cancelled by the Trustee.

         Section 2.03. Registrar, Paying Agent and Authenticating Agent; Paying
Agent to Hold Money in Trust. (a) The Company may appoint one or more
Registrars and one or more Paying Agents, and the Trustee may appoint an
Authenticating Agent, in which case each reference in the Indenture to the
Trustee in respect of the obligations of the Trustee to be performed by that
Agent will be deemed to be references to the Agent. The Company may act as
Registrar or

                                      18
<PAGE>

(except for purposes of Article 8) Paying Agent. In each case the Company and
the Trustee will enter into an appropriate agreement with the Agent
implementing the provisions of the Indenture relating to the obligations of the
Trustee to be performed by the Agent and the related rights. The Company
initially appoints the Trustee as Registrar and Paying Agent.

         (b) The Company will require each Paying Agent other than the Trustee
to agree in writing that the Paying Agent will hold in trust for the benefit of
the Holders or the Trustee all money held by the Paying Agent for the payment
of principal of and interest on the Notes and will promptly notify the Trustee
of any default by the Company in making any such payment. The Company at any
time may require a Paying Agent to pay all money held by it to the Trustee and
account for any funds disbursed, and the Trustee may at any time during the
continuance of any payment default, upon written request to a Paying Agent,
require the Paying Agent to pay all money held by it to the Trustee and to
account for any funds disbursed. Upon doing so, the Paying Agent will have no
further liability for the money so paid over to the Trustee.

         Section 2.04. Replacement Notes. If a mutilated Note is surrendered to
the Trustee or if a Holder claims that its Note has been lost, destroyed or
wrongfully taken, the Company will issue and the Trustee will authenticate a
replacement Note of like tenor and principal amount and bearing a number not
contemporaneously outstanding. Every replacement Note is an additional
obligation of the Company and entitled to the benefits of the Indenture. If
required by the Trustee or the Company, an indemnity must be furnished that is
sufficient in the judgment of both the Trustee and the Company to protect the
Company and the Trustee from any loss they may suffer if a Note is replaced.
The Company may charge the Holder for the expenses of the Company and the
Trustee in replacing a Note. In case the mutilated, lost, destroyed or
wrongfully taken Note has become or is about to become due and payable, the
Company in its discretion may pay the Note instead of issuing a replacement
Note.

         Section 2.05. Outstanding Notes. (a) Notes outstanding at any time are
all Notes that have been authenticated by the Trustee except for

          (1) Notes cancelled by the Trustee or delivered to it for
     cancellation;

          (2) any Note which has been replaced pursuant to Section 2.04 unless
     and until the Trustee and the Company receive proof satisfactory to them
     that the replaced Note is held by a bona fide purchaser; and

          (3) on or after the maturity date or any redemption date or date for
     purchase of the Notes pursuant to an Offer to Purchase, those Notes
     payable or to be redeemed or purchased on that date for which the Trustee
     (or Paying Agent, other than the Company or an Affiliate of the Company)
     holds money sufficient to pay all amounts then due.

                                      19
<PAGE>

         (b) A Note does not cease to be outstanding because the Company or one
of its Affiliates holds the Note, provided that in determining whether the
Holders of the requisite principal amount of the outstanding Notes have given
or taken any request, demand, authorization, direction, notice, consent, waiver
or other action hereunder, Notes owned by the Company or any Affiliate of the
Company will be disregarded and deemed not to be outstanding, (it being
understood that in determining whether the Trustee is protected in relying upon
any such request, demand, authorization, direction, notice, consent, waiver or
other action, only Notes which the Trustee knows to be so owned will be so
disregarded). Notes so owned which have been pledged in good faith may be
regarded as outstanding if the pledgee establishes to the satisfaction of the
Trustee the pledgee's right so to act with respect to such Notes and that the
pledgee is not the Company or any Affiliate of the Company.

         Section 2.06. Temporary Notes. Until definitive Notes are ready for
delivery, the Company may prepare and the Trustee will authenticate temporary
Notes. Temporary Notes will be substantially in the form of definitive Notes
but may have insertions, substitutions, omissions and other variations
determined to be appropriate by the Officer executing the temporary Notes, as
evidenced by the execution of the temporary Notes. If temporary Notes are
issued, the Company will cause definitive Notes to be prepared without
unreasonable delay. After the preparation of definitive Notes, the temporary
Notes will be exchangeable for definitive Notes upon surrender of the temporary
Notes at the office or agency of the Company designated for the purpose
pursuant to Section 4.02, without charge to the Holder. Upon surrender for
cancellation of any temporary Notes the Company will execute and the Trustee
will authenticate and deliver in exchange therefor a like principal amount of
definitive Notes of the same series and of authorized denominations. Until so
exchanged, the temporary Notes will be entitled to the same benefits under the
Indenture as definitive Notes.

         Section 2.07. Cancellation. The Company at any time may deliver to the
Trustee for cancellation any Notes previously authenticated and delivered
hereunder which the Company may have acquired in any manner whatsoever, and may
deliver to the Trustee for cancellation any Notes previously authenticated
hereunder which the Company has not issued and sold. Any Registrar or the
Paying Agent will forward to the Trustee any Notes surrendered to it for
transfer, exchange or payment. The Trustee will cancel all Notes surrendered
for transfer, exchange, payment or cancellation and dispose of them in
accordance with its normal procedures or the written instructions of the
Company. The Company may not issue new Notes to replace Notes it has paid in
full or delivered to the Trustee for cancellation.

         Section 2.08. CUSIP and CINS Numbers. The Company in issuing the Notes
may use "CUSIP" and "CINS" numbers for each series of Notes, and the Trustee
will use CUSIP numbers or CINS numbers in notices of redemption or exchange or
in Offers to Purchase as a convenience to Holders, the notice to state that no
representation is made as to the correctness of such numbers either as

                                      20
<PAGE>

printed on the Notes or as contained in any notice of redemption or exchange or
Offer to Purchase. The Company will promptly notify the Trustee of any change
in the CUSIP or CINS numbers.

         Section 2.09. Registration, Transfer and Exchange. (a) The Notes will
be issued in registered form only, without coupons, and except under the
circumstances described in subsection (b)(2) or (b)(4), the Notes will be
issued in global form only. The Company shall cause the Trustee to maintain a
register (the "Register") of each series of Notes, for registering the record
ownership of Notes by the Holders thereof and transfers and exchanges of each
series of Notes.

         (b) (1) Each Global Note will be registered in the name of the
Depositary or its nominee and, so long as DTC is serving as the Depositary
thereof, will bear the DTC Legend.

         (2) Each Global Note will be delivered to the Trustee as custodian for
the Depositary. Transfers of a Global Note (but not a beneficial interest
therein) will be limited to transfers thereof in whole, but not in part, to the
Depositary, its successors or their respective nominees, except (1) as set
forth in Section 2.09(b)(4) and (2) transfers of portions thereof in the form
of Certificated Notes may be made upon request of an Agent Member (for itself
or on behalf of a beneficial owner) by written notice given to the Trustee by
or on behalf of the Depositary in accordance with customary procedures of the
Depositary and in compliance with this Section and Section 2.10.

         (3) Agent Members will have no rights under the Indenture with respect
to any Global Note held on their behalf by the Depositary, and the Depositary
may be treated by the Company, the Trustee and any agent of the Company or the
Trustee as the absolute owner and Holder of such Global Note for all purposes
whatsoever. Notwithstanding the foregoing, the Depositary or its nominee may
grant proxies and otherwise authorize any Person (including any Agent Member
and any Person that holds a beneficial interest in a Global Note through an
Agent Member) to take any action which a Holder is entitled to take under the
Indenture or the Notes, and nothing herein will impair, as between the
Depositary and its Agent Members, the operation of customary practices
governing the exercise of the rights of a holder of any security.

         (4) If (x) the Depositary notifies the Company that it is unwilling or
unable to continue as Depositary for a Global Note and a successor depositary
is not appointed by the Company within 90 days of the notice or (y) an Event of
Default has occurred and is continuing and the Trustee has received a request
from the Depositary, the Trustee will promptly exchange each beneficial
interest in each Global Note for one or more Certificated Notes of the same
series in authorized denominations having an equal aggregate principal amount
registered in the name of the owner of such beneficial interest, as identified
to the Trustee by the Depositary, and thereupon each Global Note will be deemed
canceled. If a Global Note does not bear the Restricted Legend, then the
Certificated Notes

                                      21
<PAGE>

issued in exchange therefor will not bear the Restricted Legend. If a Global
Note bears the Restricted Legend, then the Certificated Notes issued in
exchange therefor will bear the Restricted Legend, provided that any Holder of
any such Certificated Note issued in exchange for a beneficial interest in a
Temporary Offshore Global Note will have the right upon presentation to the
Trustee of a duly completed Certificate of Beneficial Ownership after the
Restricted Period to exchange such Certificated Note for a Certificated Note of
like tenor and amount that does not bear the Restricted Legend, registered in
the name of such Holder.

         (c) Each Certificated Note issued pursuant to subsection (b)(4) will be
registered in the name of the holder thereof or its nominee.

         (d) A Holder may transfer a Note (or a beneficial interest therein) to
another Person or exchange a Note (or a beneficial interest therein) for
another Note or Notes of the same series of any authorized denomination by
presenting to the Trustee a written request therefor stating the name of the
proposed transferee or requesting such an exchange, accompanied by any
certification, opinion or other document required by Section 2.10. The Trustee
will promptly register any transfer or exchange that meets the requirements of
this Section by noting the same in the register maintained by the Trustee for
the purpose; provided that

          (x) no transfer or exchange will be effective until it is registered
     in such register and

          (y) the Trustee will not be required (i) to issue, register the
     transfer of or exchange any Note for a period of 15 days before a
     selection of Notes to be redeemed or purchased pursuant to an Offer to
     Purchase, (ii) to register the transfer of or exchange any Note so
     selected for redemption or purchase in whole or in part, except, in the
     case of a partial redemption or purchase, that portion of any Note not
     being redeemed or purchased, or (iii) if a redemption or a purchase
     pursuant to an Offer to Purchase is to occur after a Regular Record Date
     but on or before the corresponding Interest Payment Date, to register the
     transfer of or exchange any Note on or after the Regular Record Date and
     before the date of redemption or purchase. Prior to the registration of
     any transfer, the Company, the Trustee and their agents will treat the
     Person in whose name any Note is registered as the owner and Holder
     thereof for all purposes (whether or not the Note is overdue), and will
     not be affected by notice to the contrary.

         From time to time the Company will execute and the Trustee will
authenticate additional Notes as necessary in order to permit the registration
of a transfer or exchange in accordance with this Section.

         No service charge will be imposed in connection with any transfer or
exchange of any Note, but the Company may require payment of a sum sufficient
to cover any transfer tax or similar governmental charge payable in connection

                                      22
<PAGE>

therewith (other than a transfer tax or other similar governmental charge
payable upon exchange pursuant to subsection (b)(4)).

         (e) (1) Global Note to Global Note. If a beneficial interest in a
Global Note is transferred or exchanged for a beneficial interest in another
Global Note of the same series, the Trustee will (x) record a decrease in the
principal amount of the Global Note being transferred or exchanged equal to the
principal amount of such transfer or exchange and (y) record a like increase in
the principal amount of the other Global Note. Any beneficial interest in one
Global Note that is transferred to a Person who takes delivery in the form of
an interest in another Global Note, or exchanged for an interest in another
Global Note of the same series, will, upon transfer or exchange, cease to be an
interest in such Global Note and become an interest in the other Global Note
and, accordingly, will thereafter be subject to all transfer and exchange
restrictions, if any, and other procedures applicable to beneficial interests
in such other Global Note for as long as it remains such an interest.

         (2) Certificated Note to Certificated Note. If a Certificated Note is
transferred or exchanged for another Certificated Note of the same series, the
Trustee will (x) cancel the Certificated Note being transferred or exchanged,
(y) deliver one or more new Certificated Notes of the same series in authorized
denominations having an aggregate principal amount equal to the principal
amount of such transfer or exchange to the transferee (in the case of a
transfer) or the Holder of the canceled Certificated Note (in the case of an
exchange), registered in the name of such transferee or Holder, as applicable,
and (z) if such transfer or exchange involves less than the entire principal
amount of the canceled Certificated Note of the same series, deliver to the
Holder thereof one or more Certificated Notes in authorized denominations
having an aggregate principal amount equal to the untransferred or unexchanged
portion of the canceled Certificated Note, registered in the name of the Holder
thereof.

         Section 2.10. Restrictions on Transfer and Exchange. (a) The transfer
or exchange of any Note (or a beneficial interest therein) may only be made in
accordance with this Section and Section 2.09 and, in the case of a Global Note
(or a beneficial interest therein), the applicable rules and procedures of the
Depositary. The Trustee shall refuse to register any requested transfer or
exchange that does not comply with the preceding sentence.

         (b) Subject to paragraph (c), the transfer or exchange of any Note (or
a beneficial interest therein) of the type set forth in column A below for a
Note (or a beneficial interest therein) of the type set forth opposite in
column B below may only be made in compliance with the certification
requirements (if any) described in the clause of this paragraph set forth
opposite in column C below.

                                      23
<PAGE>

         A                                    B                            C
U.S. Global Note                     U.S. Global Note                     (1)
U.S. Global Note                     Offshore Global Note                 (2)
Certificated Note                    Certificated Note                    (3)
Offshore Global Note                 U.S. Global Note                     (4)
Offshore Global Note                 Offshore Global Note                 (1)

          (1) No certification is required.

          (2) The Person requesting the transfer or exchange must deliver or
     cause to be delivered to the Trustee a duly completed Regulation S
     Certificate.

          (3) The Person requesting the transfer or exchange must deliver or
     cause to be delivered to the Trustee (x) a duly completed Rule 144A
     Certificate or (y) a duly completed Regulation S Certificate, and/or an
     Opinion of Counsel and such other certifications and evidence as the
     Company may reasonably require in order to determine that the proposed
     transfer or exchange is being made in compliance with the Securities Act
     and any applicable securities laws of any state of the United States;
     provided that if the requested transfer or exchange is made by the Holder
     of a Certificated Note that does not bear the Restricted Legend, then no
     certification is required. In the event that (i) the requested transfer or
     exchange takes place after the Restricted Period and a duly completed
     Regulation S Certificate is delivered to the Trustee or (ii) a
     Certificated Note that does not bear the Restricted Legend is surrendered
     for transfer or exchange, upon transfer or exchange the Trustee will
     deliver a Certificated Note that does not bear the Restricted Legend.

          (4) The Person requesting the transfer or exchange must deliver or
     cause to be delivered to the Trustee a duly completed Rule 144A
     Certificate.

         (c)  No certification is required in connection with any transfer or
exchange of any Note (or a beneficial interest therein)

          (1) after such Note is eligible for resale pursuant to Rule 144(k)
     under the Securities Act (or a successor provision); provided that the
     Company has provided the Trustee with an Officer's Certificate to that
     effect, and the Company may require from any Person requesting a transfer
     or exchange in reliance upon this clause (1) an opinion of counsel and any
     other reasonable certifications and evidence in order to support such
     certificate; or

          (2) (x) sold pursuant to an effective registration statement,
     pursuant to the Registration Rights Agreement or otherwise or (y) which is
     validly tendered for exchange into an Exchange Note pursuant to an
     Exchange Offer.

          (3) Any Certificated Note delivered in reliance upon this paragraph
     will not bear the Restricted Legend.

         (d) The Trustee will retain copies of all certificates, opinions and
other documents received in connection with the transfer or exchange of a Note
(or a beneficial interest therein), and the Company will have the right to
inspect and make copies thereof at any reasonable time upon written notice to
the Trustee.

         Section 2.11. Temporary Offshore Global Notes. (a) Each Note originally
sold by the Initial Purchasers in reliance upon Regulation S will be evidenced
by one or more Offshore Global Notes that bear the Temporary Offshore Global
Note Legend.

         (b) An owner of a beneficial interest in a Temporary Offshore Global
Note (or a Person acting on behalf of such an owner) may provide to the Trustee
(and the Trustee will accept) a duly completed Certificate of Beneficial
Ownership at any time after the Restricted Period (it being understood that the
Trustee will not accept any such certificate during the Restricted Period).
Promptly after acceptance of a Certificate of Beneficial Ownership with respect
to such a beneficial interest, the Trustee will cause such beneficial interest
to be exchanged for an equivalent beneficial interest in a Permanent Offshore
Global Note, and will (x) permanently reduce the principal amount of such
Temporary Offshore Global Note by the amount of such beneficial interest and
(y) increase the principal amount of such Permanent Offshore Global Note by the
amount of such beneficial interest.

         (c) Notwithstanding anything to the contrary contained herein,
beneficial interests in a Temporary Offshore Global Note may be held through
the Depositary only through Euroclear and Clearstream and their respective
direct and indirect participants.

         (d) Notwithstanding paragraph (b), if after the Restricted Period any
Initial Purchaser owns a beneficial interest in a Temporary Offshore Global
Note, such Initial Purchaser may, upon written request to the Trustee
accompanied by a certification as to its status as an Initial Purchaser,
exchange such beneficial interest for an equivalent beneficial interest in a
Permanent Offshore Global Note, and the Trustee will comply with such request
and will (x) permanently reduce the principal amount of such Temporary Offshore
Global Note by the amount of such beneficial interest and (y) increase the
principal amount of such Permanent Offshore Global Note by the amount of such
beneficial interest.

                                      25
<PAGE>

                                   ARTICLE 3
                              OPTIONAL REDEMPTION

         Section 3.01. Optional Redemption. (a) Each series of Notes are subject
to redemption upon not less than 30 nor more than 60 days notice mailed to each
holder of Notes to be redeemed at its address appearing in the Register, at any
time prior to maturity as a whole or in part, at the election of the Company at
a price (the "Redemption Price") equal to the greater of:

          (1) 100% of the principal amount of the series of Notes being
     redeemed; or

          (2) the sum of the present values of the remaining scheduled payments
     of principal of and interest on the series of Notes being redeemed
     discounted to the date of redemption on a semiannual basis (assuming a
     360-day year consisting of twelve 30-day months) at a discount rate equal
     to the Treasury Yield plus 50 basis points;

plus, for (1) or (2) above, whichever is applicable, accrued interest on such
notes to the date of redemption.

         (b) Under the procedures set forth above, the Redemption Price payable
upon the optional redemption at any time of any Notes called for redemption
shall be determined by calculating the present value at that time of each
remaining payment of principal of or interest on such Notes and then totaling
those present values. If the sum of those present values is equal to or less
than 100% of the principal amount of the Notes called for redemption, the
Redemption Price of such Notes shall be 100% of its principal amount
(redemption at par). If the sum of the present values is greater than 100% of
the principal amount of the Notes called for redemption, the Redemption Price
of such Notes shall be that greater amount (redemption at a premium). In no
event may any Notes be redeemed optionally at less than 100% of their principal
amount.

         Section 3.02. Method and Effect of Redemption. (a) If the Company
elects to redeem Notes of any series, it must notify the Trustee of the
redemption date, the series and principal amount of Notes to be redeemed by
delivering an Officers' Certificate at least 60 days before the redemption date
(unless a shorter period is satisfactory to the Trustee). If fewer than all of
the Notes of any series are being redeemed, the Officers' Certificate must also
specify a record date not less than 15 days after the date of the notice of
redemption is given to the Trustee, and the Trustee will select the Notes of
such series to be redeemed pro rata, by lot or by any other method the Trustee
in its sole discretion deems fair and appropriate, in denominations of $1,000
principal amount and multiples thereof. The Trustee will notify the Company
promptly of the Notes of such series or portions of Notes of such series to be
called for redemption. Notice of redemption must be sent by the Company or at
the Company's request, by the Trustee in the name and at the expense of the
Company, to Holders whose

                                      26
<PAGE>

Notes are to be redeemed at least 30 days but not more than 60 days before the
redemption date.

         (b) The notice of redemption will identify the Notes to be redeemed and
will include or state the following:

          (1) the redemption date;

          (2) the Redemption Price, including the portion thereof representing
     any accrued interest;

          (3) the place or places where Notes are to be surrendered for
     redemption;

          (4) Notes called for redemption must be so surrendered in order to
     collect the Redemption Price;

          (5) on the redemption date the Redemption Price will become due and
     payable on Notes called for redemption, and interest on Notes called for
     redemption will cease to accrue on and after the redemption date;

          (6) if any Note is redeemed in part, on and after the redemption
     date, upon surrender of such Note, new Notes of such series equal in
     principal amount to the unredeemed portion will be issued; and

          (7) if any Note contains a CUSIP or CINS number, no representation is
     being made as to the correctness of the CUSIP or CINS number either as
     printed on the Notes or as contained in the notice of redemption and that
     the Holder should rely only on the other identification numbers printed on
     the Notes.

         (c) Once notice of redemption is sent to the Holders, Notes called for
redemption become due and payable at the Redemption Price on the redemption
date, and upon surrender of the Notes called for redemption, the Company shall
redeem such Notes at the Redemption Price. Commencing on the redemption date,
Notes redeemed will cease to accrue interest. Upon surrender of any Note
redeemed in part, the Holder will receive a new Note of such series equal in
principal amount to the unredeemed portion of the surrendered Note.

         Section 3.03. Sinking Fund. No sinking fund is provided for the Notes.

                                      27
<PAGE>

                                   ARTICLE 4
                                   COVENANTS

         Section 4.01. Payment of Notes. (a) The Company agrees to pay the
principal of premium, if any, and interest on each series of Notes on the dates
and in the manner provided in each series of Notes and the Indenture. Not later
than 9:00 A.M. (New York City time) on the due date of any principal of,
premium, if any, or interest on any Notes, or any redemption or purchase price
of the Notes of any series, the Company will deposit with the Trustee (or
Paying Agent) money in immediately available funds sufficient to pay such
amounts, provided that if the Company or any Affiliate of the Company is acting
as Paying Agent, it will, on or before each due date, segregate and hold in a
separate trust fund for the benefit of the Holders a sum of money sufficient to
pay such amounts until paid to such Holders or otherwise disposed of as
provided in the Indenture. In each case the Company will promptly notify the
Trustee of its compliance with this paragraph.

         (b) An installment of principal or interest will be considered paid on
the date due if the Trustee (or Paying Agent, other than the Company or any
Affiliate of the Company) holds on that date money designated for and
sufficient to pay the installment. If the Company or any Affiliate of the
Company acts as Paying Agent, an installment of principal or interest will be
considered paid on the due date only if paid to the Holders.

         (c) The Company agrees to pay interest on overdue principal, and, to
the extent lawful, overdue installments of interest at the rate per annum
specified in the Notes.

         (d) Payments in respect of the Notes represented by the Global Notes
are to be made by wire transfer of immediately available funds to the accounts
specified by the Holders of the Global Notes. With respect to Certificated
Notes, the Company will make all payments by wire transfer of immediately
available funds to the accounts specified by the Holders thereof or, if no such
account is specified, by mailing a check to each Holder's registered address.

         Section 4.02. Maintenance of Office or Agency. The Company will
maintain in the Borough of Manhattan, the City of New York, an office or agency
where Notes may be surrendered for registration of transfer or exchange or for
presentation for payment and where notices and demands to or upon the Company
in respect of the Notes and the Indenture may be served. The Company hereby
initially designates the office of the Trustee located at 55 Water Street,
First Floor, New York, New York 10041 as such office of the Company. The
Company will give prompt written notice to the Trustee of the location, and any
change in the location, of such office or agency. If at any time the Company
fails to maintain any such required office or agency or fails to furnish the
Trustee with the address thereof, such presentations, surrenders, notices and
demands may be made or served to the Trustee.

                                      28
<PAGE>

         The Company may also from time to time designate one or more other
offices or agencies where the Notes may be surrendered or presented for any of
such purposes and may from time to time rescind such designations. The Company
will give prompt written notice to the Trustee of any such designation or
rescission and of any change in the location of any such other office or
agency.

         Section 4.03. Limitation on Distributions and Intercompany Loans. The
Company shall only and shall only permit any of its Subsidiaries to (1)
declare, recommend, make or pay any Distribution to any of the Company's
stockholders and (2) make any intercompany loan to AES or any of AES's
affiliates (other than the Company or any of the Company's direct or indirect
Subsidiaries) if there exists no Event of Default and no such Event of Default
will result from the making of such Distribution or intercompany loan and
either:

               (A) at the time and as a result of such Distribution or
          intercompany loan, the Company's Leverage Ratio does not exceed
          .67:1, and the Company's Interest Coverage Ratio is not less than
          2.5:1; or

               (B) if it is not in compliance with the foregoing ratios, at the
          time and as a result of such Distribution or intercompany loan its
          senior long term debt rating is at least BBB- (or its then
          equivalent) with S&P and Baa3 (or its then equivalent) with Moody's.

         Prior to making any Distribution or intercompany loan described above,
the Company Board of Directors (including the independent director) shall
confirm by a Board Resolution that such Distribution or intercompany loan
complies with this Section 4.03, provided that, in the case of a Distribution
or intercompany loan to be made under the circumstances described in clause (A)
above, the Company Board of Directors shall first have obtained a compliance
certificate from an Officer of the Company that, at the time and after giving
effect to such Distribution or intercompany loan, the Company is in compliance
with the Leverage Ratio and the Interest Coverage Ratio set forth in clause
(A). The foregoing board approval shall not be required in the case of
intercompany loans, however, if the aggregate amount of intercompany loans
outstanding at any one time does not exceed $20 million.

         Section 4.04. Limitations on Indebtedness. The Company shall not incur
any Indebtedness other than:

         (a) as part of the Company's permitted businesses and activities
described under Section 4.06;

         (b) Indebtedness outstanding on the Issue Date under the Company's
agreements then in existence and extensions of such Indebtedness;

                                      29
<PAGE>

         (c) other Indebtedness (including Permitted Debt) incurred subsequent
to receipt of written confirmation from the Rating Agencies that at the time and
as a result of such incurrence its senior long term debt rating is at least
BBB- (or its then equivalent) with S&P and Baa3 (or its then equivalent) with
Moody's; and

         (d) Indebtedness incurred for the purpose of refinancing outstanding
Indebtedness.

         Section 4.05. Limitations on Liens. (i) Liens on the IPL Stock. The
Company may not secure any Indebtedness of any Person (other than the Company)
by a Lien upon any common stock of IPL.

         (ii) Liens on Property or Assets other than the IPL Stock. Neither the
Company nor any Significant Subsidiary shall issue, assume or guarantee any
Indebtedness secured by a Lien upon any property or assets (other than any
capital stock of IPL or cash or cash equivalents) of the Company or such
Significant Subsidiary, as applicable, without effectively providing that the
outstanding Notes (together with, if the Company so determines, any other
Indebtedness or obligation then existing or thereafter created ranking equally
with the Notes) will be secured equally and ratably with (or prior to) such
Indebtedness so long as such Indebtedness is so secured. The foregoing
limitation on Liens of this clause (ii) will not, however, apply to:

          (1) Liens in existence on the Issue Date;

          (2) any Lien created or arising over any property which is acquired,
     constructed or created by the Company or any of its Significant
     Subsidiaries, but only if:

               (a) such Lien secures only principal amounts (not exceeding the
          cost of such acquisition, construction or creation) raised for the
          purposes of such acquisition, construction or creation, together with
          any costs, expenses, interest and fees incurred in relation to that
          property or a guarantee given in respect of that property;

               (b) such Lien is created or arises on or before 180 days after
          the completion of such acquisition, construction or creation; and (c)
          such Lien is confined solely to the property so acquired, constructed
          or created;

          (3) (a) rights of financial institutions to offset credit balances in
     connection with the operation of cash management programs established for
     the benefit of the Company and/or a Significant Subsidiary or in
     connection with the issuance of letters of credit for the benefit of the
     Company and/or a Significant Subsidiary;

                                      30
<PAGE>

          (b) any Lien on accounts receivable securing Indebtedness of the
     Company and/or a Significant Subsidiary incurred in connection with the
     financing of such accounts receivable;

          (c) any Lien incurred or deposits made in the ordinary course of
     business, including, but not limited to, (x) any mechanics',
     materialmen's, carriers', workmen's, vendors' and other like Liens and (y)
     any Liens securing amounts in connection with workers' compensation,
     unemployment insurance and other types of social security;

          (d) any Lien upon specific items of inventory or other goods of the
     Company and/or a Significant Subsidiary and the proceeds thereof securing
     obligations of the Company and/or a Significant Subsidiary in respect of
     bankers' acceptances issued or created for the account of such person to
     facilitate the purchase, shipment or storage of such inventory or other
     goods;

          (e) any Lien incurred or deposits made securing the performance of
     tenders, bids, leases, trade contracts (other than for borrowed money),
     statutory obligations, surety bonds, appeal bonds, government contracts,
     performance bonds, return-of-money bonds, letters of credit not securing
     borrowings and other obligations of like nature incurred in the ordinary
     course of business;

          (f) any Lien created by the Company or a Significant Subsidiary under
     or in connection with or arising out of a Currency, Interest Rate or
     Commodity Agreement or any transactions or arrangements entered into in
     connection with the hedging or management of risks relating to the
     electricity or natural gas distribution industry, including a right of set
     off or right over a margin call account or any form of cash or cash
     collateral or any similar arrangement for obligations incurred in respect
     of Currency, Interest Rate or Commodity Agreements;

          (g) any Lien arising out of title retention or like provisions in
     connection with the purchase of goods and equipment in the ordinary course
     of business; and

          (h) any Lien securing reimbursement obligations under letters of
     credit, guaranties and other forms of credit enhancement given in
     connection with the purchase of goods and equipment in the ordinary course
     of business;

         (4) Liens in favor of the Company or a Subsidiary of the Company;

         (5) (a) Liens on any property or assets acquired from an entity which
     is merged with or into the Company or a Significant Subsidiary or any
     Liens on the property or assets of any entity existing at the time such
     entity becomes a Subsidiary of the Company and, in either case, is not
     created in anticipation of the transaction, unless the Lien was created to
     secure or provide for the payment of any part of the purchase price of
     that entity;

          (b) any Lien on any property or assets existing at the time of its
     acquisition and which is not created in anticipation of such acquisition,
     unless the Lien was created to secure or provide for the payment of any
     part of the purchase price of such property or assets; and

          (c) any Lien created or outstanding on or over any asset of any
     entity which becomes a Significant Subsidiary on or after the date of the
     issuance of the notes, where the Lien is created prior to the date on
     which that entity becomes a Significant Subsidiary;

          (6) (a) Liens required by any contract, statute or regulation in
     order to permit the Company or a Significant Subsidiary to perform any
     contract or subcontract made by it with or at the request of a
     governmental entity or any governmental department, agency or
     instrumentality, or to secure partial, progress, advance or any other
     payments by the Company or a Significant Subsidiary to such governmental
     unit under the provisions of any contract, statute or regulation;

          (b) any Lien securing industrial revenue, development, pollution
     control, solid waste disposal or similar bonds issued by or for the
     benefit of the Company or a Significant Subsidiary, provided that such
     industrial revenue, development, pollution control or similar bonds do not
     provide recourse generally to the Company and/or such Significant
     Subsidiary; and

          (c) any Lien securing taxes or assessments or other applicable
     governmental charges or levies;

          (7) any Lien which arises under any order of attachment, restraint or
     similar legal process arising in connection with court proceedings and any
     Lien which secures the reimbursement obligation for any bond obtained in
     connection with an appeal taken in any court proceeding, so long as the
     execution or other enforcement of such Lien arising under such legal
     process is effectively stayed and the claims secured by that Lien are
     being contested in good faith and, if appropriate, by appropriate legal
     proceedings, and any Lien in favor of a plaintiff or defendant in any
     action before a court or tribunal as security for costs and/or expenses;

          (8) any extension, renewal or replacement (or successive extensions,
     renewals or replacements), as a whole or in part, of any Liens referred to
     in the foregoing clauses, for amounts not exceeding the

                                      32
<PAGE>

     principal amount of the Indebtedness secured by the Lien so extended,
     renewed or replaced, provided that such extension, renewal or replacement
     Lien is limited to all or a part of the same property or assets that were
     covered by the Lien extended, renewed or replaced (plus improvements on
     such property or assets);

          (9) any Lien created in connection with Project Finance Debt;

          (10) any Lien created by IPL or its subsidiaries securing
     Indebtedness of IPL or its subsidiaries;

          (11) any Lien created in connection with the securitization of some
     or all of the assets of IPL and the associated issuance of Indebtedness as
     authorized by applicable state or federal law in connection with the
     restructuring of jurisdictional electric or gas businesses; and

          (12) any Lien on stock created in connection with a mandatorily
     convertible or exchangeable stock or debt financing, provided that any
     such financing may not be secured by or otherwise involve the creation of
     a Lien on any capital stock of IPL or any successor entity to IPL.

         Notwithstanding the foregoing restriction on Liens on property or
assets other than capital stock of IPL, the Company and its Significant
Subsidiaries may create Liens over any of such of their respective properties
or assets so long as the aggregate amount of Indebtedness secured by all such
Liens (excluding therefrom the amount of Indebtedness secured by Liens set
forth in clauses (1) through (12), inclusive, above) does not exceed 10% of
Consolidated Net Tangible Assets in the aggregate calculated as of the date of
creation of such Liens (based upon the Consolidated Net Tangible Assets
appearing on the most recently available balance sheet for the most recently
concluded calendar quarter).

         Section 4.06. Limitation on Business Activities. The Company shall, and
must cause its Significant Subsidiaries to, engage only in:

         (a) those types of business and other activities in which the Company
or any of its direct or indirect subsidiaries or controlled partnerships or
joint ventures are engaged on the Issue Date (including, without limitation,
any geographic or other expansion of such business or activities); and

         (b) any other business or activity which is deemed necessary, useful or
desirable in connection with such existing businesses and activities or any
such permitted additional geographic or other expansions of such businesses and
activities.

         Section 4.07. Noteholders' Lists. The Company will furnish or cause to
be furnished to the Trustee a list in such form as the Trustee may reasonably
require of the names and addresses of the holders of each series of Notes
pursuant to Section 312 of the Trust Indenture Act (a) semi-annually not more
than 15 days

                                      33
<PAGE>

after each record date for the payment of semi-annual interest on the Notes, as
hereinabove specified, as of such record date, and (b) at such other times as
the Trustee may request in writing, within thirty days after receipt by the
Company of any such request as of a date not more than 15 days prior to the
time such information is furnished.

         Section 4.08. Certificate to Trustee. The Company will furnish to the
Trustee annually, on or before a date not more than four months after the end
of its fiscal year (which, on the date hereof, is a calendar year), a brief
certificate (which need not contain the statements required by Section 10.04)
from its principal executive, financial or accounting officer as to his or her
knowledge of the compliance of the Company with all conditions and covenants
under this Indenture (such compliance to be determined without regard to any
period of grace or requirement of notice provided under this Indenture) which
certificate shall comply with the requirements of the Trust Indenture Act. The
Company shall also notify the Trustee of any Default or Event of Default under
this Indenture, provided, however, that a failure by the Company to deliver
such notice shall not constitute a Default or an Event of Default under this
Indenture, if the Company has remedied such Default within any applicable grace
period.

          Section 4.09. Reports by the Company. (a) Notwithstanding that the
Company may not be required to be subject to the reporting requirements of
Section 13 or 15(d) of the Exchange Act, from and after the date of
effectiveness of any registration statement required to be filed by the Company
pursuant to the Registration Rights Agreement, the Company shall file with the
Commission or cause to be filed with the Commission and provide copies to the
Trustee with the information, documents and other reports (or copies of such
portions of any of the foregoing as the Commission may by rules and regulations
prescribe) that the Company is (or would be if it were still so subject)
required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act.

         (b) Prior to the date on which the Company becomes subject to the
reporting requirements of Section 13 or Section 15(d) of the Exchange Act, the
Company will provide, without charge, upon the written request of (x) a Holder
of any Notes or (y) a prospective Holder of any of the Notes who is a
"qualified institutional buyer" within the meaning of Rule 144A and is
designated by an existing Holder of any of the Notes (in each case, with a copy
to the Trustee), with the information with respect to the Company required to
be delivered under Rule 144A(d)(4) under the Securities Act to enable resales
of the Notes to be made pursuant to Rule 144A. The Company shall also comply
with the other provisions of Section 314(a) of the Trust Indenture Act.
Delivery of such reports, information and documents to the Trustee is for
informational purposes only and the Trustee's receipt of such shall not
constitute constructive notice of any information contained therein or
determinable from information contained therein, including the Company's
compliance with any of its covenants hereunder (as to which the Trustee is
entitled to rely exclusive on Officers' Certificates).

                                      34
<PAGE>

                                   ARTICLE 5
                    CONSOLIDATION, MERGER OR SALE OF ASSETS

         Section 5.01. Limitations on Consolidation, Merger, Conveyance, Sale or
Lease. The Company shall not (i)(a) consolidate with or merge with or into any
other Person, or permit any Person to merge into or consolidate with the
Company, or convey, transfer or lease its consolidated properties and assets
substantially as an entirety (in one transaction or in a series of related
transactions), (b) convey, transfer or lease its consolidated electric
transmission and distribution assets and operations substantially as an
entirety (in one transaction or in a series of related transactions), or (c)
convey, transfer or lease all or substantially all of its consolidated electric
generation assets and operations (in one transaction or a series of
transactions), to any Person or (ii) permit any of its Subsidiaries to enter
into any such transaction or series of transactions if it would result in the
disposition of (x) the Company's consolidated properties and assets
substantially as an entirety, (y) the Company's consolidated electric
transmission and distribution assets and operations substantially as an
entirety or (z) all or substantially all of the Company's consolidated electric
generation assets and operations unless, in each case:

          (A) either (1) the Company will be the surviving entity, or (2) the
     surviving entity, if other than the Company, formed by such consolidation
     or into which the Company is merged or that acquired or leased such
     property or assets (the "Surviving Person") shall be an entity organized
     under the laws of the United States of America, one of its States or the
     District of Columbia and expressly assumes by supplemental indenture the
     Company's obligations under the Notes and the Indenture, provided,
     however, that in the event following a conveyance, transfer or lease of
     the Company's consolidated properties and assets substantially as an
     entirety or a conveyance, transfer or lease of all or substantially all of
     the Company's consolidated electric generation assets and operations, the
     Company continues to own, directly or indirectly, its consolidated
     electric transmission and distribution assets and operations that it held
     immediately preceding such conveyance, transfer or lease substantially as
     an entirety, the Notes and the Indenture shall remain the obligations of
     the Company and shall not be assumed by the Surviving Person;

          (B) immediately after giving effect to that transaction, (1) no Event
     of Default shall have occurred and be continuing and (2) either (a) the
     Company obtains written confirmation from the Rating Agencies that its
     senior long term debt rating is at least BBB- (or its then equivalent)
     with S&P and Baa3 (or its then equivalent) with Moody's or (b) the Company
     or the Surviving Person, as the case may be, not later than 30 days
     following the consummation of such consolidation, merger, conveyance,
     transfer

                                      35
<PAGE>

     or lease, makes an Offer to Purchase all outstanding Notes at a
     purchase price equal to 100% of the principal amount plus accrued interest
     to the date of purchase and thereafter consummates the purchase of all
     Notes validly tendered in such Offer to Purchase; and

          (C) and the Company shall have delivered to the Trustee (i) an
     Opinion of Counsel and an Officer's Certificate stating that such
     consolidation, merger, transfer or lease and such supplemental indenture
     (if any) complies with this Section 5.01 and that all conditions precedent
     provided for herein relating to such transaction have been complied with
     and that such supplemental indenture (if any) constitutes the legal, valid
     and binding obligation of the Surviving Person enforceable against such
     entity in accordance with its terms, subject to customary exceptions.

         "Offer to Purchase" means an offer to purchase the Notes by the
Company or the Surviving Person, as the case may be, from the Holders commenced
by mailing a notice to the Trustee and each Holder stating: (i) the offer is
being made pursuant to Section 5.01 of the Indenture and that all Notes validly
tendered will be accepted for payment; (ii) the purchase price and an
expiration date (the "Expiration Date") which shall be no earlier than 30 days
nor later than 60 days from the date such notice is mailed and a settlement
date for purchase (the "Purchase Date") which shall be no later than five
Business Days after the Expiration Date; (iii) that any Note not tendered will
continue to accrue interest pursuant to its terms; (iv) that, unless the
Company defaults in the payment of the purchase price, any Note accepted for
payment pursuant to the Offer to Purchase shall cease to accrue interest on and
after the Purchase Date; (v) that Holders electing to have a Note purchased
pursuant to the Offer to Purchase will be required to surrender the Note,
together with the form entitled "Option of the Holder to Elect Purchase" on the
reverse side of the Note completed, to the Paying Agent at the address
specified in the notice prior to the close of business on the Expiration Date;
(vi) that Holders will be entitled to withdraw their election if the Paying
Agent receives, not later than the close of business on the Expiration Date, a
telegram, facsimile transmission or letter setting forth the name of such
Holder, the principal amount of Notes delivered for purchase and a statement
that such Holder is withdrawing his election to have such Notes purchased;
(vii) that Holders whose Notes are being purchased only in part will be issued
new Notes of the same series equal in principal amount to the unpurchased
portion of the Notes surrendered; provided that each Note purchased and each
new Note issued shall be in a principal amount of $1,000 or an integral
multiple thereof; and (viii) information concerning the business of the Company
and its Subsidiaries or the Surviving Person and its Subsidiaries, as the case
may be, which the Company or the Surviving Person in good faith believes will
enable the Holders to make an informed decision with respect to the Offer to
Purchase. On the Purchase Date, the Company shall (i) accept for payment all
Notes or portions

                                      36
<PAGE>

thereof tendered pursuant to an Offer to Purchase; (ii) deposit with the Paying
Agent money sufficient to pay the purchase price of all Notes or portions
thereof so accepted plus accrued and unpaid interest thereon to the Purchase
Date; and (iii) deliver, or cause to be delivered, to the Trustee all Notes or
portions thereof so accepted together with an Officers' Certificate specifying
the Notes or portions thereof accepted for payment by the Company. The Paying
Agent shall promptly mail to the Holders of Notes so accepted payment in an
amount equal to the purchase price, and the Trustee shall promptly authenticate
and mail to such Holders a new Note of the same series equal in principal
amount to any unpurchased portion of the Note surrendered; provided that each
Note purchased and each new Note issued shall be in a principal amount of
$1,000 or an integral multiple thereof. The Company or the Surviving Person, as
the case may be, shall publicly announce the results of an Offer to Purchase as
soon as practicable after the Purchase Date. The Trustee shall act as the
Paying Agent for an Offer to Purchase. The Company or the Surviving Person
shall comply with Rule 14e-1 under the Exchange Act and any other securities
laws and regulations thereunder to the extent such laws and regulations are
applicable, in the event that the Company is required to repurchase Notes
pursuant to an Offer to Purchase.

         Section 5.02. Successor Substituted. Except as otherwise provided in
the provisoto Section 5.01(A) upon any consolidation or merger, or any sale,
conveyance, transfer, lease or other disposition of all or substantially all of
the property and assets of the Company in accordance with Section 5.01 of this
Indenture, the Surviving Person formed by such consolidation or into which the
Company is merged or to which such sale, conveyance, transfer, lease or other
disposition is made shall succeed to, and be substituted for, and may exercise
every right and power of, the Company under this Indenture with the same effect
as if such Surviving Person had been named as the Company herein.

                                   ARTICLE 6
                              DEFAULT AND REMEDIES

         Section 6.01. Events of Default. An "Event of Default" occurs with
respect to each series of Notes if:

          (1) the Company defaults in the payment of the principal of, or any
     premium on, any Note of that series when the same becomes due and payable
     at maturity, upon acceleration, redemption or required purchase or
     otherwise;

          (2) the Company defaults in the payment of interest (including any
     Additional Interest) on any Note of that series when the same becomes due
     and payable, and the default continues for a period of 30 days;

          (3) the Company defaults in the performance of or breaches any other
     covenant or agreement of the Company in the Indenture or under

                                      37
<PAGE>

     the Notes of that series and the default or breach continues for a period
     of 30 consecutive days after written notice specifying the default is
     delivered to the Company by the Trustee or to the Company and the Trustee
     by the Holders of 25% or more in aggregate principal amount of the Notes
     of that series;

          (4) a default occurs in the payment of the principal of any bond,
     debenture, note or other evidence of indebtedness, in each case for money
     borrowed, issued by the Company, or in the payment of principal under any
     mortgage, indenture or instrument under which there may be issued or by
     which there may be secured or evidenced any Indebtedness for Borrowed
     Money, of the Company or any Significant Subsidiary if such Indebtedness
     for Borrowed Money is not Project Finance Debt and provides for recourse
     generally to the Company or any Significant Subsidiary, which default for
     payment of principal is in an aggregate principal amount exceeding $25
     million when such indebtedness becomes due and payable (whether at
     maturity, upon redemption or acceleration or otherwise), if such default
     shall continue unremedied or unwaived for more than 30 Business Days and
     the time for payment of such amount has not been expressly extended (until
     such time as such payment default is remedied, cured or waived);

          (5) a court having jurisdiction enters a decree or order for: (i)
     relief in respect of the Company or any of its Significant Subsidiaries in
     an involuntary case under any applicable bankruptcy, insolvency, or other
     similar law now or hereafter in effect; (ii) appointment of a receiver,
     liquidator, assignee, custodian, trustee, sequestrator, or similar
     official of the Company or any of its Significant Subsidiaries or for all
     or substantially all of the property and assets of the Company or any of
     its Significant Subsidiaries; or (iii) the winding up or liquidation of
     the affairs of the Company or any of its Significant Subsidiaries; and, in
     each case, such decree or order shall remain unstayed and in effect for a
     period of 60 consecutive days;

          (6) the Company or any of its Significant Subsidiaries: (i) commences
     a voluntary case under any applicable bankruptcy, insolvency, or other
     similar law now or hereafter in effect, or consents to the entry of an
     order for relief in an involuntary case under any such law; (iii) consents
     to the appointment of or taking possession by a receiver, liquidator,
     assignee, custodian, trustee, sequestrator, or similar official of the
     Company or any of its Significant Subsidiaries or for all or substantially
     all of the property and assets of the Company or any of its Significant
     Subsidiaries; or (iii) effects any general assignment for the benefit of
     creditors (an event of default specified in clause (5) or (6) a
     "bankruptcy default"); or

                                      38
<PAGE>

          (7) the Trustee, as Collateral Agent, fails to have a perfected
     security interest in the Pledged Stock of IPL for a period of 10 days.

         Section 6.02. Acceleration. (a) If an Event of Default, other than a
bankruptcy default with respect to the Company, occurs with respect to any
series of Notes and is continuing under the Indenture, the Trustee or the
Holders of at least 25% in aggregate principal amount of the Notes of that
Series then outstanding, by written notice to the Company (and to the Trustee
if the notice is given by the Holders), may, and the Trustee at the request of
such Holders shall, declare the principal of, premium, if any, and accrued
interest on the outstanding Notes of that series to be immediately due and
payable. Upon a declaration of acceleration, such principal, premium, if any,
and accrued interest will become immediately due and payable. If a bankruptcy
default occurs with respect to the Company, the principal of, premium, if any,
and accrued interest on the Notes then outstanding will become immediately due
and payable without any declaration or other act on the part of the Trustee or
any Holder.

         (b) The Holders of a majority in principal amount of an outstanding
series of Notes by written notice to the Company and to the Trustee may waive
all past defaults with respect to that series of Notes and rescind and annul a
declaration of acceleration with respect to that series of Notes and its
consequences if

          (1) all existing Events of Default applicable to the Notes of that
     series, other than the nonpayment of the principal of, premium, if any,
     and interest on the Notes of that series that have become due solely by
     the declaration of acceleration, have been cured or waived, and

          (2) the rescission would not conflict with any judgment or decree of
     a court of competent jurisdiction.

         Section 6.03. Other Remedies. If an Event of Default with respect to
any series of Notes occurs and is continuing, the Trustee may pursue, in its own
name or as trustee of an express trust, any available remedy by proceeding at
law or in equity to collect the payment of principal of, premium, if any, and
interest on the Notes of that series or to enforce the performance of any
provision of the Notes of that series or the Indenture. The Trustee may
maintain a proceeding even if it does not possess any of the Notes of that
series or does not produce any of them in the proceeding. When the Trustee
incurs expenses or renders services after the occurrence of an act of
bankruptcy with respect to the Company, the expenses and the compensation for
such services are intended to constitute expenses of administration under any
federal or state bankruptcy, insolvency, arrangement, moratorium,
reorganization or other debtor relief law.

         Section 6.04. Waiver of Past Defaults. Except as otherwise provided in
Sections 6.02, 6.07 and 9.02, the Holders of a majority in principal amount of
an outstanding series of Notes may, by notice to the Trustee, waive an existing

                                      39
<PAGE>

Default with respect to that series of Notes and its consequences. Upon such
waiver, the Default with respect to that series of Notes will cease to exist,
and any Event of Default arising therefrom will be deemed to have been cured,
but no such waiver will extend to any subsequent or other Default or impair any
right consequent thereon.

         Section 6.05. Control by Majority. The Holders of at least a majority
in aggregate principal amount of an outstanding series of Notes 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. 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 any series of Notes not joining in the giving of such direction, and
may take any other action it deems proper that is not inconsistent with any
such direction received from Holders of Notes of any series.

         Section 6.06. Limitation on Suits. A Holder of the Notes of any series
may not institute any proceeding, judicial or otherwise, with respect to the
Indenture or the Notes of that series, or for the appointment of a receiver or
trustee, or for any other remedy under the Indenture or the Notes of that
series, unless:

          (1) such Holder has previously given to the Trustee written notice of
     a continuing Event of Default with respect to the Notes of that series;

          (2) the Holders of at least 25% in aggregate principal amount of
     outstanding Notes of that series have made written request to a
     Responsible Officer of the Trustee to institute proceedings in respect of
     such Event of Default in its own name as Trustee under the Indenture;

          (3) such Holder or Holders have offered to the Trustee indemnity
     reasonably satisfactory to the Trustee against any costs, liabilities or
     expenses to be incurred in compliance with such request;

          (4) the Trustee for 60 days after its receipt of such notice, request
     and offer of indemnity has failed to institute any such proceeding; and

          (5) during such 60-day period, the Holders of a majority in aggregate
     principal amount of the outstanding Notes of that series have not given
     the Trustee a direction that is inconsistent with such written request.

         Section 6.07. Rights of Holders to Receive Payment. Notwithstanding
anything to the contrary, the right of a Holder of a Note to receive payment of
principal of, premium, if any, or interest on its Note on or after the stated

                                      40
<PAGE>

maturities thereof, or to bring suit for the enforcement of any such payment on
or after such respective dates, may not be impaired or affected without the
consent of that Holder.

         Section 6.08. Collection Suit by Trustee. If an Event of Default in
payment of principal, premium, if any, or interest specified in clause (1) or
(2) of Section 6.01 occurs and is continuing with respect to Notes of any
series, the Trustee may recover judgment in its own name and as trustee of an
express trust for the whole amount of principal, premium, if any, and accrued
interest remaining unpaid on the Notes of that series, together with interest
on overdue principal and, to the lawful, overdue installments of interest, in
each case at the rate specified in the Notes of that series, and such further
amount as is sufficient to cover the costs and expenses of collection,
including the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel and any other amounts due the Trustee
hereunder.

          Section 6.09. Trustee May File Proofs of Claim. The Trustee may file
proofs of claim and other papers or documents as may be necessary or advisable
in order to have the claims of the Trustee (including any claim for the
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel, and any other amounts due the Trustee hereunder) and the Holders
allowed in any judicial proceedings relating to the Company or its creditors or
property, and is entitled and empowered to collect, receive and distribute any
money, securities or other property payable or deliverable upon conversion or
exchange of the Notes or upon any such claims. Any custodian, receiver,
assignee, trustee, liquidator, sequestrator or other similar official in any
such judicial proceeding is hereby authorized by each Holder to make such
payments to the Trustee and, if the Trustee consents to the making of such
payments directly to the Holders, to pay to the Trustee any amount due to it
for the reasonable compensation, expenses, disbursements and advances of the
Trustee, its agent and counsel, and any other amounts due the Trustee
hereunder. Nothing in the Indenture will be deemed to empower the Trustee to
authorize or consent to, or accept or adopt on behalf of any Holder, any plan
of reorganization, arrangement, adjustment or composition affecting the Notes
of any series or the rights of any Holder thereof, or to authorize the Trustee
to vote in respect of the claim of any Holder in any such proceeding.

         Section 6.10. Priorities. If the Trustee collects any money pursuant to
this Article, it shall pay out the money in the following order:

                  First: to the Trustee for all amounts due hereunder;

                  Second: to Holders of any series of Notes in respect of
               which moneys have been collected for amounts then due and unpaid
               for principal of, premium, if any, and interest on such Notes,
               ratably, without preference or priority of any kind of any Note
               over any other Note

                                      41
<PAGE>

               (whether of the same series or not), according to the amounts
               due and payable on such Notes for principal, premium, if any,
               and interest; and

                  Third:  to the Company or as a court of competent
               jurisdiction may direct.

         The Trustee, upon written notice to the Company, may fix a record date
and payment date for any payment to Holders pursuant to this Section.

         Section 6.11. Restoration of Rights and Remedies. If the Trustee or any
Holder has instituted a proceeding to enforce any right or remedy under the
Indenture and the proceeding has been discontinued or abandoned for any reason,
or has been determined adversely to the Trustee or to the Holder, then, subject
to any determination in the proceeding, the Company, the Trustee and the
Holders will be restored severally and respectively to their former positions
hereunder and thereafter all rights and remedies of the Company, the Trustee
and the Holders will continue as though no such proceeding had been instituted.

         Section 6.12. Undertaking for Costs. In any suit for the enforcement of
any right or remedy under the Indenture or in any suit against the Trustee for
any action taken or omitted by it as Trustee, a court may require any party
litigant in such suit (other than the Trustee) to file an undertaking to pay
the costs of the suit, and the court may assess reasonable costs, including
reasonable attorneys fees, against any party litigant (other than the Trustee)
in the suit having due regard to the merits and good faith of the claims or
defenses made by the party litigant. This Section does not apply to a suit by a
Holder to enforce payment of principal of or interest on any Note on the
respective due dates, or a suit by Holders of more than 10% in principal amount
of the outstanding Notes of such series.

         Section 6.13. Rights and Remedies Cumulative. No right or remedy
conferred or reserved to the Trustee or to the Holders under this Indenture is
intended to be exclusive of any other right or remedy, and all such rights and
remedies are, to the extent permitted by law, cumulative and in addition to
every other right and remedy hereunder or now or hereafter existing at law or
in equity or otherwise. The assertion or exercise of any right or remedy
hereunder, or otherwise, will not prevent the concurrent assertion or exercise
of any other right or remedy.

         Section 6.14. Delay or Omission Not Waiver. No delay or omission of the
Trustee or of any Holder to exercise any right or remedy accruing upon any
Event of Default will impair any such right or remedy or constitute a waiver of
any such Event of Default or an acquiescence therein. Every right and remedy
given by this Article or by law to the Trustee or to the Holders may be
exercised from time to time, and as often as may be deemed expedient, by the
Trustee or by the Holders, as the case may be.

                                      42
<PAGE>

         Section 6.15. Waiver of Stay, Extension or Usury Laws. The Company
covenants, to the extent that it may lawfully do so, that it will not at any
time insist upon, or plead, or in any manner whatsoever claim or take the
benefit or advantage of, any stay or extension law or any usury law or other
law that would prohibit or forgive the Company from paying all or any portion
of the principal of, premium, if any, or interest on the Notes as contemplated
herein, wherever enacted, now or at any time hereafter in force, or that may
affect the covenants or the performance of the Indenture. The Company hereby
expressly waives, to the extent that it may lawfully do so, all benefit or
advantage of any such law and covenants that it will not hinder, delay or
impede the execution of any power herein granted to the Trustee, but will
suffer and permit the execution of every such power as though no such law had
been enacted.

                                   ARTICLE 7
                                  THE TRUSTEE

         Section 7.01. General. (a) The duties and responsibilities of the
Trustee are as provided by the Trust Indenture Act and as set forth herein.
Whether or not expressly so provided, every provision of the Indenture relating
to the conduct or affecting the liability of or affording protection to the
Trustee is subject to this Article.

         (b) Except during the continuance of an Event of Default, the Trustee
need perform only those duties that are specifically set forth in the Indenture
and no others, and no implied covenants or obligations will be read into the
Indenture against the Trustee. In case an Event of Default has occurred and is
continuing, the Trustee shall exercise those rights and powers vested in it by
the Indenture, and use the same degree of care and skill in their exercise, as
a prudent man would exercise or use under the circumstances in the conduct of
his own affairs.

         (c) No provision of the Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act or its own willful misconduct.

     Section 7.02. Certain Rights of Trustee. Subject to Trust Indenture Act
Sections 315(a) through (d):

          (1) In the absence of bad faith on its part, the Trustee may rely,
     and will be protected in acting or refraining from acting, upon any
     resolution, certificate, statement, instrument, opinion, report, notice,
     request, direction, consent, order, bond, debenture, note, other evidence
     of indebtedness or other paper or document believed by it to be genuine
     and to have been signed or presented by the proper Person. The Trustee
     need not investigate any fact or matter stated in the document, but, in
     the case of any document which is specifically required to be furnished to
     the Trustee pursuant to any provision hereof, the Trustee shall examine
     the

                                      43
<PAGE>

     document to determine whether it conforms to the requirements of the
     Indenture (but need not confirm or investigate the accuracy of
     mathematical calculations or other facts stated therein). The Trustee, in
     its discretion, may make further inquiry or investigation into such facts
     or matters as it sees fit.

          (2) Before the Trustee acts or refrains from acting, it may require
     an Officers' Certificate or an Opinion of Counsel conforming to Section
     10.05 and the Trustee will not be liable for any action it takes or omits
     to take in good faith in reliance on the certificate or opinion.

          (3) The Trustee may act through its attorneys and agents and will not
     be responsible for the misconduct or negligence of any agent appointed
     with due care.

          (4) The Trustee will be under no obligation to exercise any of the
     rights or powers vested in it by the Indenture at the request or direction
     of any of the Holders of any series of Notes, unless such Holders have
     offered to the Trustee reasonable security or indemnity against the costs,
     expenses and liabilities that might be incurred by it in compliance with
     such request or direction.

          (5) The Trustee will not be liable for any action it takes or omits
     to take in good faith that it believes to be authorized or within its
     rights or powers or for any action it takes or omits to take in accordance
     with the direction of the Holders of any series of Notes in accordance
     with Section 6.05 relating to the time, method and place of conducting any
     proceeding for any remedy available to the Trustee, or exercising any
     trust or power conferred upon the Trustee, under the Indenture.

          (6) The Trustee may consult with counsel, and the written advice of
     such counsel or any Opinion of Counsel will be full and complete
     authorization and protection in respect of any action taken, suffered or
     omitted by it hereunder in good faith and in reliance thereon.

          (7) No provision of the Indenture will require the Trustee to expend
     or risk its own funds or otherwise incur any financial liability in the
     performance of its duties hereunder, or in the exercise of its rights or
     powers, unless it receives indemnity satisfactory to it against any loss,
     liability or expense.

         Section 7.03. Individual Rights of Trustee. The Trustee, in its
individual or any other capacity, may become the owner or pledgee of Notes and
may otherwise deal with the Company or its Affiliates with the same rights it
would have if it were not the Trustee. Any Agent may do the same with like
rights. However, the Trustee is subject to Trust Indenture Act Sections 310(b)
and 311. For purposes of Trust Indenture Act Section 311(b)(4) and (6):

                                      44
<PAGE>

          (a) "cash transaction" means any transaction in which full payment
     for goods or securities sold is made within seven days after delivery of
     the goods or securities in currency or in checks or other orders drawn
     upon banks or bankers and payable upon demand; and

          (b) "self-liquidating paper" means any draft, bill of exchange,
     acceptance or obligation which is made, drawn, negotiated or incurred for
     the purpose of financing the purchase, processing, manufacturing,
     shipment, storage or sale of goods, wares or merchandise and which is
     secured by documents evidencing title to, possession of, or a lien upon,
     the goods, wares or merchandise or the receivables or proceeds arising
     from the sale of the goods, wares or merchandise previously constituting
     the security, provided the security is received by the Trustee
     simultaneously with the creation of the creditor relationship arising from
     the making, drawing, negotiating or incurring of the draft, bill of
     exchange, acceptance or obligation.

         Section 7.04. Trustee's Disclaimer. The Trustee (i) makes no
representation as to the validity or adequacy of the Indenture or the Notes,
(ii) is not accountable for the Company's use or application of the proceeds
from the Notes and (iii) is not responsible for any statement in the Notes
other than its certificate of authentication.

         Section 7.05. Notice of Default. If any Default with respect to the
Notes of any series occurs and is continuing and is known to the Trustee, the
Trustee will send notice of the Default to each Holder of such series within 90
days after it occurs, unless the Default has been cured; provided that, except
in the case of a default in the payment of the principal of, premium, if any,
or interest on any Note, the Trustee may withhold the notice if and so long as
the board of directors, the executive committee or a trust committee of
directors of the Trustee in good faith determines that withholding the notice
is in the interest of the Holders of the Notes of such series. Notice to
Holders under this Section will be given in the manner and to the extent
provided in Trust Indenture Act Section 313(c).

         Section 7.06. Reports by Trustee to Holders. Within 60 days after each
May 15, beginning with May 15, 2002, the Trustee will mail to each Holder, as
provided in Trust Indenture Act Section 313(c), a brief report dated as of such
May 15, if required by Trust Indenture Act Section 313(a), and file such
reports with each stock exchange upon which its Notes are listed and with the
Commission as required by Trust Indenture Act Section 313(d).

         Section 7.07. Compensation and Indemnity. (a) The Company will pay the
Trustee compensation as agreed upon in writing for its services. The
compensation of the Trustee is not limited by any law on compensation of a
Trustee of an express trust. The Company will reimburse the Trustee upon
request for all reasonable out-of-pocket expenses, disbursements and advances

                                      45
<PAGE>

incurred or made by the Trustee, including the reasonable compensation and
expenses of the Trustee's agents and counsel.

         (b) The Company will indemnify the Trustee for, and hold it harmless
against, any loss or liability or expense incurred by it without negligence or
bad faith on its part arising out of or in connection with the acceptance or
administration of the Indenture and its duties under the Indenture and the
Notes, including the costs and expenses of defending itself against any claim
or liability and of complying with any process served upon it or any of its
officers in connection with the exercise or performance of any of its powers or
duties under the Indenture and the Notes.

          (c) To secure the Company's payment obligations in this Section, the
Trustee will have a lien prior to the Notes on all money or property held or
collected by the Trustee, in its capacity as Trustee, except money or property
held in trust to pay principal, premium, if any, of, and interest on particular
Notes.

         Section 7.08. Replacement of Trustee. (a) (1) The Trustee may resign at
any time by written notice to the Company.

         (2) The Holders of a majority in principal amount of all then
outstanding Notes of all series (voting as a single class) may remove the
Trustee by written notice to the Trustee.

         (3) If the Trustee is no longer eligible under Section 7.10 or in the
circumstances described in Trust Indenture Act Section 310(b), any Holder that
satisfies the requirements of Trust Indenture Act Section 310(b) may petition
any court of competent jurisdiction for the removal of the Trustee and the
appointment of a successor Trustee.

         (4) The Company may remove the Trustee if: (i) the Trustee is no longer
eligible under Section 7.10; (ii) the Trustee is adjudged a bankrupt or an
insolvent; (iii) a receiver or other public officer takes charge of the Trustee
or its property; or (iv) the Trustee becomes incapable of acting.

         (5) A resignation or removal of the Trustee and appointment of a
successor Trustee will become effective only upon the successor Trustee's
acceptance of appointment as provided in this Section.

         (b) If the Trustee has been removed by the Holders, Holders of a
majority in principal amount of all then outstanding Notes of all series
(voting as a single class) may appoint a successor Trustee with the consent of
the Company. Otherwise, if the Trustee resigns or is removed, or if a vacancy
exists in the office of Trustee for any reason, the Company will promptly
appoint a successor Trustee. If the successor Trustee does not deliver its
written acceptance within 30 days after the retiring Trustee resigns or is
removed, the retiring Trustee, the Company or the Holders of a majority in
principal amount of all then outstanding

                                      46
<PAGE>

Notes of all series (voting as a single class) may petition any court of
competent jurisdiction for the appointment of a successor Trustee.

         (c) Upon delivery by the successor Trustee of a written acceptance of
its appointment to the retiring Trustee and to the Company, (i) the retiring
Trustee will transfer all property held by it as Trustee to the successor
Trustee, subject to the lien provided for in Section 7.07, (ii) the resignation
or removal of the retiring Trustee will become effective, and (iii) the
successor Trustee will have all the rights, powers and duties of the Trustee
under the Indenture. Upon request of any successor Trustee, the Company will
execute any and all instruments for fully and vesting in and confirming to the
successor Trustee all such rights, powers and trusts. The Company will give
notice of any resignation and any removal of the Trustee and each appointment
of a successor Trustee to all Holders, and include in the notice the name of
the successor Trustee and the address of its Corporate Trust Office.

         (d) Notwithstanding replacement of the Trustee pursuant to this
Section, the Company's obligations under Section 7.07 will continue for the
benefit of the retiring Trustee.

         (e) The Trustee agrees to give the notices provided for in, and
otherwise comply with, Trust Indenture Act Section 310(b).

         Section 7.09. Successor Trustee by Merger. If the Trustee consolidates
with, merges or converts into, or transfers all or substantially all of its
corporate trust business to, another corporation or national banking
association, the resulting, surviving or transferee corporation or national
banking association without any further act will be the successor Trustee with
the same effect as if the successor Trustee had been named as the Trustee in
the Indenture.

         Section 7.10. Eligibility. The Indenture must always have a Trustee
that satisfies the requirements of Trust Indenture Act Section 310(a) and has a
combined capital and surplus of at least $25,000,000 as set forth in its most
recent published annual report of condition.

         Section 7.11. Money Held in Trust. The Trustee will not be liable for
interest on any money received by it except as it may agree with the Company.
Money held in trust by the Trustee need not be segregated from other funds
except to the extent required by law and except for money held in trust under
Article 8.

                                   ARTICLE 8
                            DEFEASANCE AND DISCHARGE

         Section 8.01. Satisfaction and Discharge of Indenture. If at any time
(a) the Company shall have paid or caused to be paid the principal of, premium,
if

                                      47
<PAGE>

any, and interest on all the Notes of any series outstanding hereunder (other
than Notes of such series which have been destroyed, lost or stolen and which
have been replaced or paid as provided in Section 2.04) as and when the same
shall have become due and payable, or (b) the Company shall have delivered to
the Trustee for cancellation all Notes of any series theretofore authenticated
(other than any Notes of such series which shall have been destroyed, lost or
stolen and which shall have been replaced or paid as provided in Section 2.04)
or (c) (i) all the Notes of any series not theretofore delivered to the Trustee
for cancellation shall have become due and payable, or are by their terms to
become due and payable within one year or are to be called for redemption
within one year under arrangements satisfactory to the Trustee for the giving
of notice of redemption, and (ii) the Company shall have irrevocably deposited
or caused to be deposited with the Trustee as trust funds the entire amount in
cash (other than moneys repaid by the Trustee or any paying agent to the
Company in accordance with Section 8.05) or U.S. Government Obligations,
maturing as to principal and interest in such amounts and at such times as will
insure the availability of cash sufficient to pay at maturity or upon
redemption all Notes of such series (other than any Notes of such series which
shall have been destroyed, lost or stolen and which shall have been replaced or
paid as provided in Section 2.04) not theretofore delivered to the Trustee for
cancellation, including principal and interest due or to become due on or prior
to such date of maturity as the case may be, and if, in any such case, the
Company shall also pay or cause to be paid all other sums payable hereunder by
the Company with respect to the Notes of such series, then this Indenture shall
cease to be of further effect with respect to the Notes of such series (except
as to (i) rights of registration of transfer and exchange of securities of
such, and the Company's right of optional redemption, (ii) substitution of
mutilated, defaced, destroyed, lost or stolen Notes, (iii) rights of Holders of
such series of Notes to receive payments of principal, and premium, if any,
thereof and interest thereon, upon the original stated due dates therefor (but
not upon acceleration) and remaining rights of the Holders of such series of
Notes to receive mandatory sinking fund payments, if any, (iv) the rights,
obligations and immunities of the Trustee hereunder and (v) the rights of the
Holders of such series of Notes as beneficiaries hereof with respect to the
property so deposited with the Trustee payable to all or any of them), and the
Trustee, on demand of the Company accompanied by an Officers' Certificate and
an Opinion of Counsel and at the cost and expense of the Company, shall execute
proper instruments acknowledging such satisfaction of and discharging this
Indenture with respect to such series; provided that the rights of Holders of
such series of Notes to receive amounts in respect of principal of, premium, if
any, and interest on the Notes of such series held by them shall not be delayed
longer than required by then-applicable mandatory rules or policies of any
securities exchange upon which the Notes of such series are listed. The Company
agrees to reimburse the Trustee for any costs or expenses thereafter reasonably
and properly incurred and to compensate the Trustee for any services thereafter
reasonably and properly rendered by the Trustee in connection with this
Indenture or the Notes.

                                      48
<PAGE>

         Section 8.02. Defeasance and Discharge of Indenture. The Company shall
be deemed to have paid and shall be discharged from any and all obligations in
respect of the Notes of any series, on the 123rd day after the deposit referred
to in clause (A) hereof has been made with respect to such series Notes, and
the provisions of this Indenture shall no longer be in effect with respect to
the Notes of such series (and the Trustee, at the expense of the Company, shall
execute proper instruments acknowledging the same), except as to: (a) rights of
registration of transfer and exchange, and the Company's right of optional
redemption, (b) substitution of apparently mutilated, defaced, destroyed, lost
or stolen Notes of such series, (c) rights of holders to receive payments of
principal thereof, premium, if any, of such series and interest thereon, upon
the original stated due dates therefor (but not upon acceleration), (d) the
rights, obligations and immunities of the Trustee hereunder and (e) the rights
of the Holders of such series as beneficiaries hereof with respect to the
property so deposited with the Trustee payable to all or any of them; provided
that the following conditions shall have been satisfied:

          (A) with reference to this provision the Company has deposited or
     caused to be irrevocably deposited with the Trustee (or another trustee
     satisfying the requirements of Sections 7.08 and 7.10) as trust funds in
     trust, specifically pledged as security for, and dedicated solely to, the
     benefit of the Holders of the applicable series of Notes, (i) money in an
     amount, or (ii) U.S. Government Obligations which through the payment of
     interest and principal in respect thereof in accordance with their terms
     will provide not later than one day before the due date of any payment
     referred to in subclause (x) or (y) of this clause (A) money in an amount,
     or (iii) a combination thereof, sufficient, in the opinion of a nationally
     recognized firm of independent public accountants expressed in a written
     certification thereof delivered to the Trustee, to pay and discharge
     without consideration of the reinvestment of such interest and after
     payment of all federal, state and local taxes or other charges and
     assessments in respect thereof payable by the Trustee (x) the principal
     of, premium, if any, and each installment of interest on the outstanding
     Notes of such series on the due dates thereof and (y) any mandatory
     sinking fund payments or analogous payments applicable to the Notes of
     such series on the day on which such payments are due and payable in
     accordance with the terms of the Notes of such series and the Indenture
     with respect to the Notes of such series;

          (B) the Company has delivered to the Trustee (i) either (x) an
     Opinion of Counsel to the effect that Holders of Notes of such series will
     not recognize income, gain or loss for federal income tax purposes as a
     result of the Company's exercise of its option under this Section 8.02 and
     will be subject to federal income tax on the same amount and in the same
     manner and at the same times as would have been the case if such deposit,
     defeasance and discharge had not occurred, which Opinion of Counsel must
     be based upon a ruling of the Internal Revenue Service to the same effect
     or a change in applicable federal income tax law or related treasury
     regulations after the date of this Indenture or (y) a ruling directed to
     the Trustee received from the Internal Revenue Service to the same

                                      49
<PAGE>

     effect as the aforementioned Opinion of Counsel and (ii) an Opinion of
     Counsel to the effect that the creation of the defeasance trust does not
     violate the Investment Company Act of 1940 and after the passage of 123
     days following the deposit, the trust fund will not be subject to the
     effect of Section 547 of the U.S. Bankruptcy Code or Section 15 of the New
     York Debtor and Creditor Law;

          (C) immediately after giving effect to such deposit on a pro forma
     basis, no Event of Default with respect to such series of Notes, or event
     that after the giving of notice or lapse of time or both would become an
     Event of Default with respect to such series of Notes, shall have occurred
     and be continuing on the date of such deposit or during the period ending
     on the 123rd day after the date of such deposit, and such deposit shall
     not result in a breach or violation of, or constitute a default under, any
     other agreement or instrument to which the Company is a party or by which
     the Company is bound; and

          (D) if at such time the Notes of such series are listed on a national
     securities exchange, the Company has delivered to the Trustee an Opinion
     of Counsel to the effect that the Notes of such series will not be
     delisted as a result of such deposit, defeasance and discharge.

         If the Company shall be deemed to have paid and shall be discharged
from any and all obligations in respect of all of the Notes pursuant to this
Section 8.02 and all amounts outstanding to the Trustee hereunder or the
Collateral Agent under the Pledge Agreement shall have been paid in full, then
the Company shall be released of its obligations under the Pledge Agreement and
the Collateral shall be released from the security interest granted in favor of
the Collateral Agent thereunder.

         Section 8.03. Defeasance of Certain Obligations. The Company may omit
to comply with any term, provision or condition set forth in, and this Indenture
will no longer be in effect with respect to, any covenant in Article 4 or
Section 5.01 and clauses (3), (4) and (7) of Section 6.01 and Article XI shall
be deemed not to be an Event of Default, in each case, with respect to any
series of Notes, if

          (A) with reference to this Section 8.03, the Company has deposited or
     caused to be irrevocably deposited with the Trustee (or another trustee
     satisfying the requirements of Section 7.08) as trust funds in trust,
     specifically pledged as security for, and dedicated solely to, the benefit
     of the Holders of the applicable series of Notes, (i) money in an amount
     or (ii) U.S. Government Obligations which through the payment of principal
     and interest in respect thereof in accordance with their terms

                                      50
<PAGE>

     will provide not later than one day before the due dates thereof or
     earlier redemption (irrevocably provided for under agreements satisfactory
     to the Trustee), as the case may be, of any payment referred to in
     subclause (x) or (y) of this clause (A) money in an amount, or (iii) a
     combination thereof, sufficient, in the opinion of a nationally recognized
     firm of independent public accountants expressed in a written
     certification thereof delivered to the Trustee, to pay and discharge
     without consideration of the reinvestment of such interest and after
     payment of all federal, state and local taxes or other charges and
     assessments in respect thereof payable by the Trustee (x) the principal
     of, premium, if any, and each installment of interest on the outstanding
     Notes of such series on the due date thereof or earlier redemption
     (irrevocably provided for under arrangements satisfactory to the Trustee),
     as the case may be, and (y) any mandatory sinking fund payments or
     analogous payments applicable to the Notes of such series and the
     Indenture with respect to the Notes of such series on the day on which
     such payments are due and payable in accordance with the terms of the
     Notes of such series and the Indenture with respect to the Notes of such
     series;

          (B) the Company has delivered to the Trustee (i) an Opinion of
     Counsel to the effect that Holders of the applicable series of Notes will
     not recognize income, gain or loss for federal income tax purposes as a
     result of the Company's exercise of its option under this Section 8.03 and
     will be subject to federal income tax on the same amount and in the same
     manner and at the same times as would have been the case if such deposit
     and defeasance had not occurred and (ii) an Opinion of Counsel to the
     effect that the creation of the defeasance trust does not violate the
     Investment Company Act of 1940 and after the passage of 123 days following
     the deposit, the trust fund will not be subject to the effect of Section
     547 of the U.S. Bankruptcy Code or Section 15 of the New York Debtor and
     Creditor Law;

          (C) immediately after giving effect to such deposit on a pro forma
     basis, no Event of Default which respect to such series of Notes, or event
     that after the giving of notice or lapse of time or both would become an
     Event of Default which respect to such series of Notes, shall have
     occurred and be continuing on the date of such deposit or during the
     period ending on the 123rd day after the date of such deposit, and such
     deposit shall not result in a breach or violation of, or constitute a
     default under, any other agreement or instrument to which the Company is a
     party or by which the Company is bound; and

          (D) if at such time the Notes of such series are listed on a national
     securities exchange, the Company has delivered to the Trustee an Opinion
     of Counsel to the effect that such Notes will not be delisted as a result
     of such deposit, defeasance and discharge.

                                      51
<PAGE>

         If the Company shall have satisfied each of the conditions set forth
above in this Section 8.03 and all amounts outstanding to the Trustee hereunder
or the Collateral Agent under the Pledge Agreement shall have been paid in
full, then the Company shall be released of its obligations under the Pledge
Agreement and the Collateral shall be released from the security interest
granted in favor of the Collateral Agent thereunder.

         Section 8.04. Application of Trust Money. Subject to Section 8.05, the
Trustee will hold in trust the money or U.S. Government Obligations deposited
with it pursuant to Section 8.01, 8.02 or 8.03, and apply the deposited money
and the proceeds from deposited U.S. Government Obligations to the payment of
principal of, premium, if any, and interest on the applicable series of Notes
in accordance with such Notes and the Indenture. Such money and U.S. Government
Obligations need not be segregated from other funds except to the extent
required by law.

         Section 8.05. Repayment to Company. Subject to Sections 7.07, 8.01,
8.02 and 8.03, the Trustee will promptly pay to the Company upon request any
excess money held by the Trustee at any time and thereupon be relieved from all
liability with respect to such money. The Trustee will pay to the Company upon
request any money held for payment with respect to the applicable series of
Notes that remains unclaimed for two years, provided that before making such
payment the Trustee may at the expense of the Company publish once in a
newspaper of general circulation in New York City, or send to each Holder of
the applicable series of Notes entitled to such money, notice that the money
remains unclaimed and that after a date specified in the notice (at least 30
days after the date of the publication or notice) any remaining unclaimed
balance of money will be repaid to the Company. After payment to the Company,
Holders of the applicable series of Notes entitled to such money must look
solely to the Company for payment, unless applicable law designates another
Person, and all liability of the Trustee with respect to such money will cease.

         Section 8.06. Reinstatement. If and for so long as the Trustee is
unable to apply any money or U.S. Government Obligations held in trust pursuant
to Section 8.01, 8.02 or 8.03 by reason of any legal proceeding or by reason of
any order or judgment of any court or governmental authority enjoining,
restraining or otherwise prohibiting such application, the Company's
obligations under the Indenture and the applicable series of Notes will be
reinstated as though no such deposit in trust had been made. If the Company
makes any payment of principal of, premium, if any, or interest on any series
of Notes because of the reinstatement of its obligations, it will be subrogated
to the rights of the Holders of such Notes to receive such payment from the
money or U.S. Government Obligations held in trust.

                                      52
<PAGE>

                                   ARTICLE 9
                      AMENDMENTS, SUPPLEMENTS AND WAIVERS

         Section 9.01. Amendments Without Consent of Holders. (a) The Company
and the Trustee may amend or supplement the Indenture or the Notes without
notice to or the consent of any Noteholder

          (1) to cure any ambiguity, defect or inconsistency in the Indenture
     or the Notes;

          (2) to comply with Section 5.01;

          (3) to comply with any requirements of the Commission in connection
     with the qualification of the Indenture under the Trust Indenture Act;

          (4) to evidence and provide for the acceptance of appointment
     hereunder by a successor Trustee;

          (5) to provide for uncertificated Notes in addition to or in place of
     certificated Notes, provided that the uncertified Notes are issued in
     registered form for purposes of Section 163(f) of the Code, or in a manner
     such that the uncertificated Notes are described in Section 163(f)(2)(B)
     of the Code;

          (6) to provide for any guarantee of the Notes, to secure the Notes or
     to confirm and evidence the release, termination or discharge of any
     guarantee of or lien securing the Notes when such release, termination or
     discharge is permitted by the Indenture;

          (7) to provide for or confirm the issuance of Additional Notes; or

          (8) to make any other change that does not materially and adversely
     affect the rights of any Holder.

         Section 9.02. Amendments with Consent of Holders. (a) Except as
otherwise provided in Sections 6.02, 6.04 and 6.07 or paragraph (b), the
Company and the Trustee may amend the Indenture with respect to the Notes of
any series and the Notes of such series with the written consent of the Holders
of a majority in principal amount of the outstanding Notes of such series, and
the Holders of a majority in principal amount of the outstanding Notes of any
series by written notice to the Trustee may waive future compliance by the
Company with any provision of the Indenture with respect to the Notes of such
series or the Notes of such series.

                                      53
<PAGE>

          (b) Notwithstanding the provisions of paragraph (a), without the
consent of each Holder of Notes of any series affected, an amendment or waiver
may not

          (1) reduce the principal amount of or change the stated maturity of
     any installment of principal of any Note of that series,

          (2) reduce the rate of or change the stated maturity of any interest
     payment on any Note of that series,

          (3) reduce the amount payable upon the redemption or any required
     repurchase of any Note of that series or change the times at which any
     Note of that series may be redeemed or repurchased or, once notice of
     redemption or an Offer to Purchase has been given, the time at which it
     must thereupon be redeemed or repurchased,

          (4) make any Note of that series payable in money other than that
     stated in such Note,

          (5) impair the right of any Holder of Notes of that series to receive
     any principal payment, premium payment, if any, or interest payment on
     such Holder's Notes, on or after the stated maturity thereof, or to
     institute suit for the enforcement of any such payment,

          (6) make any change in the percentage of the principal amount of the
     Notes of that series required for amendments or waivers, or

          (7) modify or change any provision of the Indenture affecting the
     ranking of the Notes of that series in a manner adverse to the Holders of
     the Notes of that series.

         (c) It is not necessary for Noteholders to approve the particular form
of any proposed amendment, supplement or waiver, but is sufficient if their
consent approves the substance thereof.

         (d) An amendment, supplement or waiver under this Section will become
effective on receipt by the Trustee of written consents from the Holders of the
requisite percentage in principal amount of the outstanding Notes of the series
affected. After an amendment, supplement or waiver under this Section becomes
effective, the Company will send to the Holders affected thereby a notice
briefly describing the amendment, supplement or waiver. The Company will send
supplemental indentures to Holders upon request. Any failure of the Company to
send such notice, or any defect therein, will not, however, in any way impair
or affect the validity of any such supplemental indenture or waiver.

         Section 9.03. Effect of Consent. (a) After an amendment, supplement or
waiver becomes effective, it will bind every Holder of Notes of the series
affected unless it is of the type requiring the consent of each Holder
affected. If the

                                      54
<PAGE>

amendment, supplement or waiver is of the type requiring the consent of each
Holder affected, the amendment, supplement or waiver will bind each Holder that
has consented to it and every subsequent Holder of a Note that evidences the
same debt as the Note of the consenting Holder.

         (b) If an amendment, supplement or waiver changes the terms of a Note,
the Trustee may require the Holder to deliver it to the Trustee so that the
Trustee may place an appropriate notation of the changed terms on the Note and
return it to the Holder, or exchange it for a new Note that reflects the
changed terms. The Trustee may also place an appropriate notation on any Note
thereafter authenticated. However, the effectiveness of the amendment,
supplement or waiver is not affected by any failure to annotate or exchange
Notes in this fashion.

         Section 9.04. Trustee's Rights and Obligations. The Trustee is entitled
to receive, and will be fully protected in relying upon, an Opinion of Counsel
stating that the execution of any amendment, supplement or waiver authorized
pursuant to this Article is authorized or permitted by the Indenture. If the
Trustee has received such an Opinion of Counsel, it shall sign the amendment,
supplement or waiver so long as the same does not adversely affect the rights
of the Trustee. The Trustee may, but is not obligated to, execute any
amendment, supplement or waiver that affects the Trustee's own rights, duties
or immunities under the Indenture.

         Section 9.05. Conformity with Trust Indenture Act. Every supplemental
indenture executed pursuant to this Article shall conform to the requirements
of the Trust Indenture Act.

         Section 9.06. Payments for Consents. Neither the Company nor any of its
Subsidiaries or Affiliates may, directly or indirectly, pay or cause to be paid
any consideration, whether by way of interest, fee or otherwise, to any Holder
for or as an inducement to any consent, waiver or amendment of any of the terms
or provisions of the Indenture with respect to any series of Notes or the Notes
of that series unless such consideration is offered to be paid or agreed to be
paid to all Holders of the Notes of that series that consent, waive or agree to
amend such term or provision within the time period set forth in the
solicitation documents relating to the consent, waiver or amendment.

                                  ARTICLE 10
                                 MISCELLANEOUS

         Section 10.01. Trust Indenture Act of 1939. The Indenture shall
incorporate and be governed by the provisions of the Trust Indenture Act that
are required to be part of and to govern indentures qualified under the Trust
Indenture Act.

                                      55
<PAGE>

         Section 10.02. Noteholder Communications; Noteholder Actions. (a) The
rights of Holders to communicate with other Holders with respect to the
Indenture or the Notes are as provided by the Trust Indenture Act, and the
Company and the Trustee shall comply with the requirements of Trust Indenture
Act Sections 312(a) and 312(b). Neither the Company nor the Trustee will be
held accountable by reason of any disclosure of information as to names and
addresses of Holders made pursuant to the Trust Indenture Act.

         (b) (1) Any request, demand, authorization, direction, notice, consent
to amendment, supplement or waiver or other action provided by this Indenture to
be given or taken by a Holder (an "act") may be evidenced by an instrument
signed by the Holder delivered to the Trustee. The fact and date of the
execution of the instrument, or the authority of the person executing it, may
be proved in any manner that the Trustee deems sufficient.

         (2) The Trustee may make reasonable rules for action by or at a meeting
of Holders of Notes of any series, which will be binding on all the Holders of
Notes of that series.

         (c) Any act by the Holder of any Note binds that Holder and every
subsequent Holder of a Note that evidences the same debt as the Note of the
acting Holder, even if no notation thereof appears on the Note. Subject to
paragraph (d), a Holder may revoke an act as to its Notes, but only if the
Trustee receives the notice of revocation before the date the amendment or
waiver or other consequence of the act becomes effective.

         (d) The Company may, but is not obligated to, fix a record date (which
need not be within the time limits otherwise prescribed by Trust Indenture Act
Section 316(c)) for the purpose of determining the Holders of Notes of any
series entitled to act with respect to any amendment or waiver or in any other
regard, except that during the continuance of an Event of Default with respect
to that series of Notes, only the Trustee may set a record date as to notices
of default, any declaration or acceleration or any other remedies or other
consequences of such Event of Default. If a record date is fixed with respect
to the Notes of any series, those Persons that were Holders of Notes of that
series at such record date and only those Persons will be entitled to act, or
to revoke any previous act, whether or not those Persons continue to be Holders
of Notes of that series after the record date. No act will be valid or
effective for more than 90 days after the record date.

         Section 10.03. Notices. (a) Any notice or communication to the Company
will be deemed given if in writing (i) when delivered in person or (ii) five
days after mailing when mailed by first class mail, or (iii) when sent by
facsimile transmission, with transmission confirmed. Any notice to the Trustee
will be effective only upon receipt. In each case the notice or communication
should be addressed as follows:

         if to the Company:

                                      56
<PAGE>

                  IPALCO Enterprises, Inc.
                  One Monument Circle
                  Indianapolis, Indiana 46204
                  Fax:  (317) 261-8288

         if to the Trustee:

                  Bank One, National Association
                  111 Monument Circle
                  Indianapolis, Indiana 46204
                  Fax:  (317) 321-3864

The Company or the Trustee by notice to the other may designate additional or
different addresses for subsequent notices or communications.

         (b) Except as otherwise expressly provided with respect to published
notices, any notice or communication to a Holder will be deemed given when
mailed to the Holder at its address as it appears on the Register by first
class mail or, as to any Global Note registered in the name of DTC or its
nominee, as agreed by the Company, the Trustee and DTC. Copies of any notice or
communication to a Holder, if given by the Company, will be mailed to the
Trustee at the same time. Defect in mailing a notice or communication to any
particular Holder will not affect its sufficiency with respect to other
Holders.

         (c) Where the Indenture provides for notice, the notice may be waived
in writing by the Person entitled to receive such notice, either before or after
the event, and the waiver will be the equivalent of the notice. Waivers of
notice by Holders must be filed with the Trustee, but such filing is not a
condition precedent to the validity of any action taken in reliance upon such
waivers.

         Section 10.04. Certificate and Opinion as to Conditions Precedent. Upon
any request or application by the Company to the Trustee to take any action
under the Indenture, the Company will furnish to the Trustee:

          (1) an Officers' Certificate stating that, in the opinion of the
     signers, all conditions precedent, if any, provided for in the Indenture
     relating to the proposed action have been complied with; and

          (2) an Opinion of Counsel stating that all such conditions precedent
     have been complied with.

         Section 10.05. Statements Required in Certificate or Opinion. Each
certificate or opinion with respect to compliance with a condition or covenant
provided for in the Indenture must include:

          (1) a statement that each person signing the certificate or opinion
     has read the covenant or condition and the related definitions;

                                      57
<PAGE>

          (2) a brief statement as to the nature and scope of the examination
     or investigation upon which the statement or opinion contained in the
     certificate or opinion is based;

          (3) a statement that, in the opinion of each such person, that person
     has made such examination or investigation as is necessary to enable the
     person to express an informed opinion as to whether or not such covenant
     or condition has been complied with; and

          (4) a statement as to whether or not, in the opinion of each such
     person, such condition or covenant has been complied with, provided that
     an Opinion of Counsel may rely on an Officers' Certificate or certificates
     of public officials with respect to matters of fact.

         Section 10.06. Payment Date Other Than a Business Day. If any payment
with respect to a payment of any principal of, premium, if any, or interest on
any Note (including any payment to be made on any date fixed for redemption or
purchase of any Note) is due on a day which is not a Business Day, then the
payment need not be made on such date, but may be made on the next Business Day
with the same force and effect as if made on such date, and no interest will
accrue for the intervening period.

         Section 10.07. Governing Law. The Indenture and the Notes shall be
governed by, and construed in accordance with, the laws of the State of New
York.

         Section 10.08. No Adverse Interpretation of Other Agreements. The
Indenture may not be used to interpret another indenture or loan or debt
agreement of the Company or any Subsidiary of the Company, and no such
indenture or loan or debt agreement may be used to interpret the Indenture.

         Section 10.09. Successors. All agreements of the Company in the
Indenture and the Notes will bind its successors. All agreements of the Trustee
in the Indenture will bind its successor.

         Section 10.10. Duplicate Originals. The parties may sign any number of
copies of the Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement.

         Section 10.11. Separability. In case any provision in the Indenture or
in the Notes is invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions will not in any way be affected or
impaired thereby.

         Section 10.12. Table of Contents and Headings. The Table of Contents,
Cross-Reference Table and headings of the Articles and Sections of the
Indenture have been inserted for convenience of reference only, are not to be
considered a

                                      58
<PAGE>

part of the Indenture and in no way modify or restrict any of the terms and
provisions of the Indenture.

         Section 10.13. No Liability of Directors, Officers, Employees,
Incorporators and Stockholders. No director, officer, employee, incorporator,
member or stockholder of the Company, as such, will have any liability for any
obligations of the Company under the Notes, or the Indenture or for any claim
based on, in respect of, or by reason of, such obligations. Each Holder of
Notes by accepting a Note waives and releases all such liability. The waiver
and release are part of the consideration for issuance of the Notes.

                                  ARTICLE 11
                            SECURITY AND COLLATERAL

         Section 11.01. Pledge Agreement. The full and punctual payment when due
and the full and punctual performance of all of the obligations of the Company
under the Notes and this Indenture to the Holders and the Trustee, according to
the provisions of this Indenture or the Notes (the "Obligations"), shall be
secured, as provided in the Pledge Agreement. Each Holder of the Notes, by its
acceptance thereof, consents and agrees to the terms of the Pledge Agreement
(including, without limitation, the provisions providing for foreclosure and
release of Collateral) as the same may be in effect or may be amended from time
to time in accordance with its terms and authorizes and directs the Collateral
Agent to enter into the Pledge Agreement and to perform its obligations and
exercise its rights thereunder in accordance therewith. The Company shall
deliver to the Trustee copies of all documents delivered to the Collateral
Agent pursuant to the Pledge Agreement, and shall cause to be done all such
acts and things as may be necessary or proper, or as may be required by the
provisions of the Pledge Agreement, to assure and confirm to the Trustee and
the Collateral Agent that the security interest in the Collateral contemplated
hereby, by the Pledge Agreement or any parts thereof, as from time to time
constituted, so as to render the same available for the security and benefit of
this Indenture and the Notes, secured hereby, according to the intent and
purposes herein expressed. The Company shall cause to be taken any and all
actions reasonably required to cause the Pledge Agreement to create and
maintain, as security for the Obligations of the Company, hereunder, a valid
and enforceable perfected Lien in and on all the Collateral, in favor of the
Collateral Agent for the benefit of the Trustee and Holders and other Secured
Parties (as defined in the Pledge Agreement), if any, and subject to no other
Liens other than Liens permitted by Section 4.05(i) hereof.

         Section 11.02. Recording and Opinions. The Company shall comply with
the provisions of Section 314(b) of the Trust Indenture Act, including the
delivery to the Trustee of any opinions relating to the perfection of the
security interest in the Collateral created by the Pledge Agreement, to the
extent required thereby.

                                      59
<PAGE>

         Section 11.03. Release of Collateral. (a) Subject to subsections (b),
(c) and (d) of this Section 11.03 and the terms of the Pledge Agreement,
Collateral may be released from the Lien and security interest created by the
Pledge Agreement at any time or from time to time in accordance with the
provisions of the Pledge Agreement. In addition, subject to the terms of the
Pledge Agreement, upon the request of the Company pursuant to an Officers'
Certificate certifying that all conditions precedent hereunder have been met
and (at the sole cost and expense of the Company) the Collateral Agent shall
release the Collateral that is sold, conveyed or disposed of in compliance with
the provisions of the Pledge Agreement and this Indenture. Upon receipt of such
Officers' Certificate, the Collateral Agent shall execute, deliver or
acknowledge any necessary or proper instruments of termination, satisfaction or
release to evidence the release of any Collateral permitted to be released
pursuant to this Indenture or the Pledge Agreement, as prepared by the Company.

         (b) No Collateral shall be released from the Lien and security interest
created by the Pledge Agreement pursuant to the provisions of the Pledge
Agreement unless there shall have been delivered to the Collateral Agent the
certificate required by this Section 11.03.

         (c) At any time when a Default or Event of Default with respect to the
Notes of any series shall have occurred and be continuing and the maturity of
the Notes shall have been accelerated (whether by declaration or otherwise) and
the Trustee shall have delivered a notice of acceleration to the Collateral
Agent, no release of Collateral pursuant to the provisions of the Pledge
Agreement shall be effective as against the Holders of Notes.

         (d) The release of any Collateral from the terms of this Indenture and
the Pledge Agreement shall not be deemed to impair the security under this
Indenture in contravention of the provisions hereof if and to the extent the
Collateral is released pursuant to the terms of this Indenture or the terms of
the Pledge Agreement. To the extent applicable, the Company shall cause TIA
Section 313(b), relating to reports, and TIA Section 314(d), relating to the
release of property or securities from the Lien and security interest of the
Pledge Agreement and relating to the substitution therefor of any property or
securities to be subjected to the Lien and security interest of the Pledge
Agreement, to be complied with. Any certificate or opinion required by TIA
Section 314(d) may be made by an Officer of the Company except in cases where
TIA Section 314(d) requires that such certificate or opinion be made by an
independent Person, which Person shall be an independent engineer, appraiser or
other expert selected by the Company in a manner consistent with the
requirements of the TIA.

         Section 11.04. Certificates of the Company. The Company shall furnish
to the Trustee and the Collateral Agent, prior to each proposed release of
Collateral pursuant to the Pledge Agreement, (i) all documents required by TIA
Section 314(d) and (ii) an Opinion of Counsel, which may be rendered by
internal

                                      60
<PAGE>

counsel to the Company to the effect that such accompanying documents
constitute all documents required by TIA Section 314(d).

         Section 11.05. Certificates of the Trustee. In the event that the
Company wishes to release Collateral in accordance with the Pledge Agreement
and has delivered the certificates and documents required by the Pledge
Agreement and Sections 11.03 and 11.04 hereof and the Trustee has received, all
documentation required by TIA Section 314(d) in connection with such release,
and the Opinion of Counsel delivered pursuant to Section 11.04, the Trustee
shall deliver a certificate to the Collateral Agent setting forth that it has
received all such documentation.

         Section 11.06. Authorization of Actions to be Taken by the Collateral
Agent Under the Pledge Agreement. Subject to the provisions of Sections 7.01
and 7.02 hereof and the Pledge Agreement, the Trustee may, with the consent of
the Holders of a majority in principal amount of the Notes of all series,
voting as a single class, direct the Collateral Agent to take all actions it
deems necessary or appropriate in order to (a) enforce any of the terms of the
Pledge Agreement and (b) collect and receive any and all amounts payable in
respect of the Obligations of the Company hereunder.

         Section 11.07. Authorization of Receipt of Refunds by the Trustee Under
the Pledge Agreement. The Trustee is authorized to receive any funds
distributed under the Pledge Agreement for the benefit of all Holders, and to
make further distributions of such funds to the Holders of Notes according to
the provisions of this Indenture.

         Section 11.08. Termination of Security Interest. Upon the payment in
full of all Obligations of the Company, under this Indenture and the Notes, or
upon defeasance or covenant defeasance pursuant to Sections 8.01, 8.02 or 8.03
hereof, respectively, the Trustee shall, upon receipt of an Officer's
Certificate, deliver a certificate to the Collateral Agent to such effect, and,
subject to the terms of the Pledge Agreement, instruct the Collateral Agent to
release the Liens pursuant to this Indenture and the Pledge Agreement.

                                      61
<PAGE>

                                   SIGNATURES

         IN WITNESS WHEREOF, the parties hereto have caused the Indenture to be
duly executed as of the date first written above.

                                            IPALCO ENTERPRISES, INC.
                                            as Issuer

                                            By:  /s/ William H. Henley
                                               --------------------------------
                                                Name:  William H. Henley
                                                Title: President

                                            BANK ONE, NATIONAL ASSOCIATION
                                            as Trustee

                                            By: /s/ Jason Fry
                                               --------------------------------
                                               Name:  Jason Fry
                                               Title: Authorized Officer

                                      62
<PAGE>

                                                                    EXHIBIT A-1

                                 [FACE OF NOTE]

                            IPALCO Enterprises, Inc.

                      7.375% Senior Secured Note Due 2008

                                                   [CUSIP]  [144A]:  462613 AA8
                                                 [ISIN]  [144A]: US 462613 AA82

                                                   [CUSIP]  [Reg S]:  U4607XAA1
                                                 [ISIN]  [Reg S]:  USU4607XAA10

                                             [CUSIP]  [Registered]:  462613 AB6
                                           [ISIN]  [Registered]:  US462613 AB65

No.                                                                $375,000,000

         IPALCO Enterprises, Inc., an Indiana corporation (the "Company", which
term includes any successor under the Indenture hereinafter referred to), for
value received, promises to pay to [Cede & Co.], or its registered assigns, the
principal sum of THREE HUNDRED SEVENTY FIVE MILLION DOLLARS ($375,000,000) [or
such other amount as indicated on the Schedule of Exchange of Notes attached
hereto] on November 14, 2008.

         Initial Interest Rate:  7.375% per annum (subject to adjustment as
 provided herein).

         Interest Payment Dates:  May 15 and November 15, commencing
 May 15, 2002.

         Regular Record Dates:  May 1 and November 1.

         Reference is hereby make to the further provisions of this Note set
forth on the reverse hereof, which will for all purposes have the same effect
as if set forth at this place.

                                     A-1-1
<PAGE>

         IN WITNESS WHEREOF, the Company has caused this Note to be signed
manually or by facsimile by its duly authorized officers.

Date:  November 14, 2001                    IPALCO ENTERPRISES, INC.

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

                                     A-1-2
<PAGE>

               (Form of Trustee's Certificate of Authentication)

This is one of the 7.375% Senior Secured Notes Due 2008 described in the
Indenture referred to in this Note.

                                    Bank One, National Association, as Trustee

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

                                     A-1-3
<PAGE>

                             [REVERSE SIDE OF NOTE]

                            IPALCO Enterprises, Inc.

                      7.375% Senior Secured Note Due 2008

1.       Principal and Interest.

         The Company promises to pay the principal of this Note on November 14,
2008.

         The Company promises to pay interest on the principal amount of this
Note on each interest payment date, as set forth on the face of this Note, and
at maturity at the rate of 7.375% per annum subject to adjustment as provided
below.

         Interest will be payable semiannually (to the holders of record of the
Notes at the close of business on the May 1 or November 1 immediately preceding
the interest payment date) on each interest payment date, commencing May 15,
2002.

         The Holder of this Note is entitled to the benefits of the
Registration Rights Agreement, dated November 14, 2001, between the Company and
the Initial Purchasers named therein (the "Registration Rights Agreement"). In
the event that neither the Exchange Offer Registration Statement (as defined in
the Registration Rights Agreement) nor the Shelf Registration Statement (as
defined in the Registration Rights Agreement) is declared effective on or prior
to the date that is 210 days after the Issue Date (the "Effectiveness
Deadline"), the interest rate on this Note will increase by a rate of 0.50% per
annum until the Exchange Offer Registration Statement or the Shelf Registration
Statement is declared effective by the Commission. If the Exchange Offer
Registration Statement is declared effective but the Exchange Offer is not
consummated on or prior to the earlier to occur of 30 Business Days after the
date of effectiveness of the Exchange Offer Registration Statement or 30 days
after the Effectiveness Deadline, the interest rate on this Note will increase
by a rate of 0.50% per annum until the Exchange Offer is consummated. The
interest rate on this Note will not increase by more than 0.50% per annum
pursuant to the provisions of this paragraph notwithstanding the Company's
failure to meet more than one of these requirements.

         The annual interest rate payable on this Note will be subject to
adjustment from time to time if either Moody's Investment Service, Inc.
("Moody's") or Standard & Poor's Ratings Group ("S&P"), or both, downgrades the
Rating (as defined in the Indenture described below) ascribed to the Notes (as
defined in the Indenture) as follows:

         (a)      If the Rating ascribed to the Notes from Moody's is decreased
                  below Baa3, the annual interest rate on this Note will
                  increase by 0.50%.

                                     A-1-4
<PAGE>

         (b)      In addition,

                  (i)      (x) if during the first 90 days following November
                           14, 2001 (the "Issue Date") the Rating ascribed to
                           the Notes from S&P is decreased below BBB-, then the
                           annual interest rate on this Note will increase by
                           1.00% and (y) if during the first 90 days following
                           the Issue Date the Rating ascribed to the Notes from
                           S&P is decreased below BBB-, and if the Rating from
                           S&P is decreased below BB+ whether during such 90
                           day period or thereafter, then the annual interest
                           rate on this Note will increase by an additional
                           0.50%, or

                  (ii)     if (1) there was no increase in the annual interest
                           rate on this Note as a result of clause (b)(i) above
                           during the first 90 days following the Issue Date
                           and (2) the Rating ascribed to the Notes from S&P is
                           decreased below BBB-, then the annual interest rate
                           on this Note will increase by 0.50%.

Each adjustment to the annual interest rate of this Note required by any
decrease in a Rating described in clause (a) or (b) above, whether occasioned
by the action of Moody's or S&P, or both, shall be made independent of any and
all other adjustments. If Moody's or S&P subsequently increases its Rating
ascribed to the Notes to any of the thresholds set forth under clause (a),
(b)(i)(y) or (b)(ii) above or higher, the annual interest rate on this Note
will be readjusted downwards by the percentage set forth in such clause. If the
annual interest rate on this Note is increased as a result of clause (b)(i)(x)
above, the annual interest rate on this Note will not be adjusted downwards by
the percentage set forth in such clause even if S&P subsequently increases the
Rating ascribed to the Notes to BBB- or above. If the annual interest rate on
this Note is increased as a result of clauses (a) and (b)(i) above, the total
increase in the annual interest rate on this Note pursuant to these interest
rate adjustment provisions shall not exceed 2.00%, or if the annual interest
rate on this Note is increased as a result of clauses (a) and (b)(ii) above,
the total increase in the annual interest rate on this Note pursuant to these
interest rate adjustment provisions shall not exceed 1.00%. In no event shall
the interest rate for this Note be reduced to below the annual interest rate
set forth on the face of this Note. Any interest rate increase or decrease, as
described in this paragraph, will take effect from the first day of the first
interest period following the interest period during which a Ratings change
requires an adjustment in the annual interest rate. The Company will notify the
Trustee of any change in a Rating ascribed to the Notes by either Moody's or
S&P which requires an increase or decrease in the annual interest rate on this
Note.

         Interest on this Note will accrue from the most recent date to which
interest has been paid on this Note [or the Note surrendered in exchange for
this Note]1 (or, if there is no existing default in the payment of interest and
if this Note

---------
1    Include only for Exchange Note.

                                     A-1-5
<PAGE>

is authenticated between a regular record date and the next interest payment
date, from such interest payment date) or, if no interest has been paid, from
the Issue Date. Interest will be computed in the basis of a 360-day year of
twelve 30-day months.

         The Company will pay interest on overdue principal, premium, if any,
and, to the extent lawful, interest at a rate per annum that is 1% in excess of
7.375%. Interest not paid when due and any interest on principal, premium or
interest not paid when due will be paid to the Persons that are Holders on a
special record date, which will be the 15th day preceding the date fixed by the
Company for the payment of such interest, whether or not such day is a Business
Day. At least 15 days before a special record date, the Company will send to
each Holder and to the Trustee a notice that sets forth the special record
date, the payment date and the amount of interest to be paid.

2.       Indenture.

         This is one of the Series of Notes designated as "7.375% Senior
Secured Notes due 2008" (the "2008 Notes") issued under an Indenture dated as
of November 14, 2001 (as amended from time to time, the "Indenture"), between
the Company and Bank One, National Association, as Trustee. Another series of
Notes designated as "7.625% Senior Secured Notes due 2011" (the "2011 Notes")
have also been issued under the Indenture. Capitalized terms used herein are
used as defined in the Indenture unless otherwise indicated. The terms of the
Notes include those stated in the Indenture and those made part of the
Indenture by reference to the Trust Indenture Act. The Notes are subject to all
such terms, and Holders are referred to the Indenture and the Trust Indenture
Act for a statement of all such terms. To the extent permitted by applicable
law, in the event of any inconsistency between the terms of this Note and the
terms of the Indenture, the terms of the Indenture will control.

         The Notes are general unsubordinated obligations of the Company. The
Notes are secured by a pledge by the Company of all of the outstanding common
stock of the Company's principal subsidiary, Indianapolis Power & Light
Company, pursuant to a Pledge Agreement dated November 14, 2001 between the
Company and Bank One, National Association, as Collateral Agent. The Indenture
limits the original aggregate principal amount of the 2008 Notes to
$375,000,000, and the original aggregate principal amount of the 2011 Notes to
$375,000,000, but Additional Notes of any series may be issued pursuant to the
Indenture, and the originally issued Notes of each series and all such
Additional Notes of such series will be considered the same series of Notes.
Depending on the circumstances, the Indenture provides that each series of
Notes shall vote as a separate class or that both series of Notes will vote
together as a single class.

3.       Redemption; Discharge Prior to Redemption or Maturity.

                                     A-1-6
<PAGE>

         This Note is subject to optional redemption, as further described in
the Indenture. There is no sinking fund or mandatory redemption applicable to
this Note.

         If the Company deposits with the Trustee money or U.S. Government
Obligations sufficient to pay the then outstanding principal of, premium, if
any, and accrued interest on the Notes of any series to redemption or maturity,
the Company may in certain circumstances be discharged from the Indenture with
respect to such series of Notes and such Notes or may be discharged from
certain of its obligations under certain provisions of the Indenture with
respect to such series of Notes.

4.       Registered Form; Denominations; Transfer; Exchange.

         The Notes are in registered form without coupons in denominations of
$1,000 principal amount and any multiple of $1,000 in excess thereof. A Holder
may register the transfer or exchange of Notes in accordance with the
Indenture. The Trustee may require a Holder to furnish appropriate endorsements
and transfer documents and to pay any taxes and fees required by law or
permitted by the Indenture. Pursuant to the Indenture, there are certain
periods during which the Trustee will not be required to issue, register the
transfer of or exchange any Note or certain portions of a Note.

5.       Defaults and Remedies.

         If an Event of Default, as defined in the Indenture, with respect to
any series of Notes occurs and is continuing, the Trustee or the Holders of at
least 25% in principal amount of the Notes of that series may declare all the
Notes of that series to be due and payable. If a bankruptcy or insolvency
default with respect to the Company occurs and is continuing, the Notes
automatically become due and payable. Holders of any series of Notes may not
enforce the Indenture or the Notes of such series except as provided in the
Indenture. The Trustee may require indemnity satisfactory to it before it
enforces the Indenture or any series of Notes. Subject to certain limitations,
Holders of a majority in principal amount of any series of Notes then
outstanding may direct the Trustee in its exercise of remedies.

6.       Amendment and Waiver.

         Subject to certain exceptions, the Indenture with respect to any
series of Notes and such Notes may be amended, or default may be waived, with
the consent of the Holders of a majority in principal amount of the outstanding
Notes of that series. Without notice to or the consent of any Holder, the
Company and the Trustee may amend or supplement the Indenture or the Notes of
any series to, among other things, cure any ambiguity, defect or inconsistency.

7.       Authentication.

                                     A-1-7
<PAGE>

         This Note is not valid until the Trustee (or Authenticating Agent)
signs the certificate of authentication on the other side of this Note.

8.       Abbreviations.

         Customary abbreviations may be used in the name of a Holder or an
assignee, such as: TEN COM (= tenants in common), TEN ENT (= 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).

         The Company will furnish a copy of the Indenture to any Holder upon
written request and without charge.

                                     A-1-8
<PAGE>

                           [FORM OF TRANSFER NOTICE]

         FOR VALUE RECEIVED the undersigned registered holder hereby sell(s),
assign(s) and transfer(s) unto

Insert Taxpayer Identification No.

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

-------------------------------------------------------------------------------
   Please print or typewrite name and address including zip code of assignee

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

-------------------------------------------------------------------------------
  the within Note and all rights thereunder, hereby irrevocably constituting
                                 and appointing

attorney to transfer said Note on the books of the Company with full power of
substitution in the premises.

                                     A-1-9
<PAGE>

[THE FOLLOWING PROVISION TO BE INCLUDED ON ALL
CERTIFICATES BEARING A RESTRICTED LEGEND]

         In connection with any transfer of this Note occurring prior to
November 14, 2003, the undersigned confirms that such transfer is made without
utilizing any general solicitation or general advertising and further as
follows:

                                   Check One

|_| (1) This Note is being transferred to a "qualified institutional buyer" in
compliance with Rule 144A under the Securities Act of 1933, as amended and
certification in the form of Exhibit E to the Indenture is being furnished
herewith.

|_| (2) This Note is being transferred to a Non-U.S. Person in compliance with
the exemption from registration under the Securities Act of 1933, as amended,
provided by Regulation S thereunder, and certification in the form of Exhibit D
to the Indenture is being furnished herewith.

                                       or

|_| (3) This Note is being transferred other than in accordance with (1) or (2)
above and documents are being furnished which comply with the conditions of
transfer set forth in this Note and the Indenture.

         If none of the foregoing boxes is checked, the Trustee is not
obligated to register this Note in the name of any Person other than the Holder
hereof unless and until the conditions to any such transfer of registration set
forth herein and in the Indenture have been satisfied.

Date:____________________
                                                     ___________________________
                                                     Seller

                                                     By_________________________

                                    NOTICE: The signature to this assignment
                                    must correspond with the name as written
                                    upon the face of the within-mentioned
                                    instrument in every particular, without
                                    alteration or any change whatsoever.

                                    A-1-10
<PAGE>

Signature Guarantee:2 ______________________________________

                      By____________________________________
                      To be executed by an executive officer

---------
2   Signatures must be guaranteed by an "eligible guarantor institution"
    meeting the requirements of the Registrar, which requirements include
    membership or participation in the Note Transfer Agent 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.

                                    A-1-11
<PAGE>

                       OPTION OF HOLDER TO ELECT PURCHASE

         If you wish to have this Note purchased by the Company pursuant to an
Offer to Purchase pursuant to Section 5.01 of the Indenture, check the Box: |_|

         If you wish to have a portion of this Note purchased by the Company
pursuant to an Offer to Purchase pursuant to Section 5.01 of the Indenture,
state the amount (in principal amount): $________________.

Date:________________

Your Signature:________________________________________________________________
              (Sign exactly as your name appears on the other side of this Note)

Signature Guarantee:3 ___________________________

---------
3    Signatures must be guaranteed by an "eligible guarantor institution"
     meeting the requirements of the Registrar, which requirements include
     membership or participation in the Note Transfer Agent 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.

                                    A-1-12
<PAGE>

                        SCHEDULE OF EXCHANGES OF NOTES4

The following exchanges of a part of this Global Note for Physical Notes or a
part of another Global Note have been made:

<TABLE>
                       Amount of          Amount of       Principal amount
                      decrease in        increase in       of this Global
                    principal amount   principal amount    Note following       Signature of
                     of this Global     of this Global    such decrease (or      authorized
Date of Exchange          Note               Note             increase)      officer of Trustee
----------------    ----------------   ----------------   -----------------  ------------------
<S>                        <C>               <C>                <C>                 <C>

</TABLE>

---------
4    For Global Notes

                                    A-1-13
<PAGE>

                                                                    EXHIBIT A-2

                                 [FACE OF NOTE]

                            IPALCO Enterprises, Inc.

                      7.625% Senior Secured Note Due 2011

                                                   [CUSIP]  [144A]:  462613 AC4
                                                 [ISIN]  [144A]: US 462613 AC49

                                                   [CUSIP]  [Reg S]:  U4607XAB9
                                                 [ISIN]  [Reg S]:  USU4607XAB92

                                             [CUSIP]  [Registered]:  462613 AD2
                                           [ISIN]  [Registered]:  US462613 AD22

No.                                                                $375,000,000

         IPALCO Enterprises, Inc., an Indiana corporation (the "Company", which
term includes any successor under the Indenture hereinafter referred to), for
value received, promises to pay to [Cede & Co.], or its registered assigns, the
principal sum of THREE HUNDRED SEVENTY FIVE MILLION DOLLARS ($375,000,000) [or
such other amount as indicated on the Schedule of Exchange of Notes attached
hereto] on November 14, 2011.

         Initial Interest Rate:  7.625% per annum (subject to adjustment as
 provided herein).

         Interest Payment Dates:  May 15 and November 15, commencing
May 15, 2002.

         Regular Record Dates:  May 1 and November 1.

         Reference is hereby make to the further provisions of this Note set
forth on the reverse hereof, which will for all purposes have the same effect
as if set forth at this place.

                                     A-2-1
<PAGE>

         IN WITNESS WHEREOF, the Company has caused this Note to be signed
manually or by facsimile by its duly authorized officers.

Date:  November 14, 2001                    IPALCO ENTERPRISES, INC.

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

                                     A-2-2
<PAGE>

               (Form of Trustee's Certificate of Authentication)

This is one of the 7.625% Senior Secured Notes Due 2011 described in the
Indenture referred to in this Note.

                                    Bank One, National Association, as Trustee

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

                                     A-2-3
<PAGE>

                             [REVERSE SIDE OF NOTE]

                            IPALCO Enterprises, Inc.

                      7.625% Senior Secured Note Due 2011

1.       Principal and Interest.

         The Company promises to pay the principal of this Note on November 14,
2011.

         The Company promises to pay interest on the principal amount of this
Note on each interest payment date, as set forth on the face of this Note, and
at maturity at the rate of 7.625% per annum subject to adjustment as provided
below.

         Interest will be payable semiannually (to the holders of record of the
Notes at the close of business on the May 1 or November 1 immediately preceding
the interest payment date) on each interest payment date, commencing May 15,
2002.

         The Holder of this Note is entitled to the benefits of the
Registration Rights Agreement, dated November 14, 2001, between the Company and
the Initial Purchasers named therein (the "Registration Rights Agreement"). In
the event that neither the Exchange Offer Registration Statement (as defined in
the Registration Rights Agreement) nor the Shelf Registration Statement (as
defined in the Registration Rights Agreement) is declared effective on or prior
to the date that is 210 days after the Issue Date (the "Effectiveness
Deadline"), the interest rate on this Note will increase by a rate of 0.50% per
annum until the Exchange Offer Registration Statement or the Shelf Registration
Statement is declared effective by the Commission. If the Exchange Offer
Registration Statement is declared effective but the Exchange Offer is not
consummated on or prior to the earlier to occur of 30 Business Days after the
date of effectiveness of the Exchange Offer Registration Statement or 30 days
after the Effectiveness Deadline, the interest rate on this Note will increase
by a rate of 0.50% per annum until the Exchange Offer is consummated. The
interest rate on this Note will not increase by more than 0.50% per annum
pursuant to the provisions of this paragraph notwithstanding the Company's
failure to meet more than one of these requirements.

         The annual interest rate payable on this Note will be subject to
adjustment from time to time if either Moody's Investment Service, Inc.
("Moody's") or Standard & Poor's Ratings Group ("S&P"), or both, downgrades the
Rating (as defined in the Indenture described below) ascribed to the Notes (as
defined in the Indenture) as follows:

         (a)      If the Rating ascribed to the Notes from Moody's is decreased
                  below Baa3, the annual interest rate on this Note will
                  increase by 0.50%.

                                     A-2-4
<PAGE>

         (b)      In addition,

                  (i)      (x) if during the first 90 days following November
                           14, 2001 (the "Issue Date") the Rating ascribed to
                           the Notes from S&P is decreased below BBB-, then the
                           annual interest rate on this Note will increase by
                           1.00% and (y) if during the first 90 days following
                           the Issue Date the Rating ascribed to the Notes from
                           S&P is decreased below BBB-, and if the Rating from
                           S&P is decreased below BB+ whether during such 90
                           day period or thereafter, then the annual interest
                           rate on this Note will increase by an additional
                           0.50%, or

                  (ii)     if (1) there was no increase in the annual interest
                           rate on this Note as a result of clause (b)(i) above
                           during the first 90 days following the Issue Date
                           and (2) the Rating ascribed to the Notes from S&P is
                           decreased below BBB-, then the annual interest rate
                           on this Note will increase by 0.50%.

Each adjustment to the annual interest rate of this Note required by any
decrease in a Rating described in clause (a) or (b) above, whether occasioned
by the action of Moody's or S&P, or both, shall be made independent of any and
all other adjustments. If Moody's or S&P subsequently increases its Rating
ascribed to the Notes to any of the thresholds set forth under clause (a),
(b)(i)(y) or (b)(ii) above or higher, the annual interest rate on this Note
will be readjusted downwards by the percentage set forth in such clause. If the
annual interest rate on this Note is increased as a result of clause (b)(i)(x)
above, the annual interest rate on this Note will not be adjusted downwards by
the percentage set forth in such clause even if S&P subsequently increases the
Rating ascribed to the Notes to BBB- or above. If the annual interest rate on
this Note is increased as a result of clauses (a) and (b)(i) above, the total
increase in the annual interest rate on this Note pursuant to these interest
rate adjustment provisions shall not exceed 2.00%, or if the annual interest
rate on this Note is increased as a result of clauses (a) and (b)(ii) above,
the total increase in the annual interest rate on this Note pursuant to these
interest rate adjustment provisions shall not exceed 1.00%. In no event shall
the interest rate for this Note be reduced to below the annual interest rate
set forth on the face of this Note. Any interest rate increase or decrease, as
described in this paragraph, will take effect from the first day of the first
interest period following the interest period during which a Ratings change
requires an adjustment in the annual interest rate. The Company will notify the
Trustee of any change in a Rating ascribed to the Notes by either Moody's or
S&P which requires an increase or decrease in the annual interest rate on this
Note.

         Interest on this Note will accrue from the most recent date to which
interest has been paid on this Note [or the Note surrendered in exchange for
this Note]1 (or, if there is no existing default in the payment of interest and
if this Note

---------
1    Include only for Exchange Note.

                                     A-2-5
<PAGE>

is authenticated between a regular record date and the next interest payment
date, from such interest payment date) or, if no interest has been paid, from
the Issue Date. Interest will be computed in the basis of a 360-day year of
twelve 30-day months.

         The Company will pay interest on overdue principal, premium, if any,
and, to the extent lawful, interest at a rate per annum that is 1% in excess of
7.375%. Interest not paid when due and any interest on principal, premium or
interest not paid when due will be paid to the Persons that are Holders on a
special record date, which will be the 15th day preceding the date fixed by the
Company for the payment of such interest, whether or not such day is a Business
Day. At least 15 days before a special record date, the Company will send to
each Holder and to the Trustee a notice that sets forth the special record
date, the payment date and the amount of interest to be paid.

2.       Indenture.

         This is one of the Series of Notes designated as "7.625% Senior
Secured Notes due 2011" (the "2011 Notes") issued under an Indenture dated as
of November 14, 2001 (as amended from time to time, the "Indenture"), between
the Company and Bank One, National Association, as Trustee. Another series of
Notes designated as "7.375% Senior Secured Notes due 2008" (the "2008 Notes")
have also been issued under the Indenture. Capitalized terms used herein are
used as defined in the Indenture unless otherwise indicated. The terms of the
Notes include those stated in the Indenture and those made part of the
Indenture by reference to the Trust Indenture Act. The Notes are subject to all
such terms, and Holders are referred to the Indenture and the Trust Indenture
Act for a statement of all such terms. To the extent permitted by applicable
law, in the event of any inconsistency between the terms of this Note and the
terms of the Indenture, the terms of the Indenture will control.

         The Notes are general unsubordinated obligations of the Company. The
Notes are secured by a pledge by the Company of all of the outstanding common
stock of the Company's principal subsidiary, Indianapolis Power & Light
Company, pursuant to a Pledge Agreement dated November 14, 2001 between the
Company and Bank One, National Association, as Collateral Agent. The Indenture
limits the original aggregate principal amount of the 2008 Notes to
$375,000,000, and the original aggregate principal amount of the 2011 Notes to
$375,000,000, but Additional Notes of any series may be issued pursuant to the
Indenture, and the originally issued Notes of each series and all such
Additional Notes of such series will be considered the same series of Notes.
Depending on the circumstances, the Indenture provides that each series of
Notes shall vote as a separate class or that both series of Notes will vote
together as a single class.

3.       Redemption; Discharge Prior to Redemption or Maturity.

                                     A-2-6
<PAGE>

         This Note is subject to optional redemption, as further described in
the Indenture. There is no sinking fund or mandatory redemption applicable to
this Note.

         If the Company deposits with the Trustee money or U.S. Government
Obligations sufficient to pay the then outstanding principal of, premium, if
any, and accrued interest on the Notes of any series to redemption or maturity,
the Company may in certain circumstances be discharged from the Indenture with
respect to such series of Notes and such Notes or may be discharged from
certain of its obligations under certain provisions of the Indenture with
respect to such series of Notes.

4.       Registered Form; Denominations; Transfer; Exchange.

         The Notes are in registered form without coupons in denominations of
$1,000 principal amount and any multiple of $1,000 in excess thereof. A Holder
may register the transfer or exchange of Notes in accordance with the
Indenture. The Trustee may require a Holder to furnish appropriate endorsements
and transfer documents and to pay any taxes and fees required by law or
permitted by the Indenture. Pursuant to the Indenture, there are certain
periods during which the Trustee will not be required to issue, register the
transfer of or exchange any Note or certain portions of a Note.

5.       Defaults and Remedies.

         If an Event of Default, as defined in the Indenture, with respect to
any series of Notes occurs and is continuing, the Trustee or the Holders of at
least 25% in principal amount of the Notes of that series may declare all the
Notes of that series to be due and payable. If a bankruptcy or insolvency
default with respect to the Company occurs and is continuing, the Notes
automatically become due and payable. Holders of any series of Notes may not
enforce the Indenture or the Notes of such series except as provided in the
Indenture. The Trustee may require indemnity satisfactory to it before it
enforces the Indenture or any series of Notes. Subject to certain limitations,
Holders of a majority in principal amount of any series of Notes then
outstanding may direct the Trustee in its exercise of remedies.

6.       Amendment and Waiver.

         Subject to certain exceptions, the Indenture with respect to any
series of Notes and such Notes may be amended, or default may be waived, with
the consent of the Holders of a majority in principal amount of the outstanding
Notes of that series. Without notice to or the consent of any Holder, the
Company and the Trustee may amend or supplement the Indenture or the Notes of
any series to, among other things, cure any ambiguity, defect or inconsistency.

7.       Authentication.

                                     A-2-7
<PAGE>

         This Note is not valid until the Trustee (or Authenticating Agent)
signs the certificate of authentication on the other side of this Note.

8.       Abbreviations.

         Customary abbreviations may be used in the name of a Holder or an
assignee, such as: TEN COM (= tenants in common), TEN ENT (= 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).

         The Company will furnish a copy of the Indenture to any Holder upon
written request and without charge.

                                     A-2-8
<PAGE>

                           [FORM OF TRANSFER NOTICE]

         FOR VALUE RECEIVED the undersigned registered holder hereby sell(s),
assign(s) and transfer(s) unto

Insert Taxpayer Identification No.

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

-------------------------------------------------------------------------------
   Please print or typewrite name and address including zip code of assignee

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

-------------------------------------------------------------------------------
  the within Note and all rights thereunder, hereby irrevocably constituting
                                 and appointing

attorney to transfer said Note on the books of the Company with full power of
substitution in the premises.

                                     A-2-9
<PAGE>

[THE FOLLOWING PROVISION TO BE INCLUDED ON ALL
CERTIFICATES BEARING A RESTRICTED LEGEND]

         In connection with any transfer of this Note occurring prior to
November 14, 2003, the undersigned confirms that such transfer is made without
utilizing any general solicitation or general advertising and further as
follows:

                                   Check One

|_| (1) This Note is being transferred to a "qualified institutional buyer" in
compliance with Rule 144A under the Securities Act of 1933, as amended and
certification in the form of Exhibit E to the Indenture is being furnished
herewith.

|_| (2) This Note is being transferred to a Non-U.S. Person in compliance with
the exemption from registration under the Securities Act of 1933, as amended,
provided by Regulation S thereunder, and certification in the form of Exhibit D
to the Indenture is being furnished herewith.

                                       or

|_| (3) This Note is being transferred other than in accordance with (1) or (2)
above and documents are being furnished which comply with the conditions of
transfer set forth in this Note and the Indenture.

         If none of the foregoing boxes is checked, the Trustee is not
obligated to register this Note in the name of any Person other than the Holder
hereof unless and until the conditions to any such transfer of registration set
forth herein and in the Indenture have been satisfied.

Date:____________________
                                                     __________________________
                                                     Seller

                                                     By________________________

                                    NOTICE: The signature to this assignment
                                    must correspond with the name as written
                                    upon the face of the within-mentioned
                                    instrument in every particular, without
                                    alteration or any change whatsoever.

                                    A-2-10
<PAGE>

Signature Guarantee:2 ______________________________________

                      By____________________________________
                      To be executed by an executive officer

---------
2   Signatures must be guaranteed by an "eligible guarantor institution"
    meeting the requirements of the Registrar, which requirements include
    membership or participation in the Note Transfer Agent 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.

                                    A-2-11
<PAGE>

                       OPTION OF HOLDER TO ELECT PURCHASE

         If you wish to have this Note purchased by the Company pursuant to an
Offer to Purchase pursuant to Section 5.01 of the Indenture, check the Box: |_|

         If you wish to have a portion of this Note purchased by the Company
pursuant to an Offer to Purchase pursuant to Section 5.01 of the Indenture,
state the amount (in principal amount): $________________.

Date:________________

Your Signature:________________________________________________________________
             (Sign exactly as your name appears on the other side of this Note)

Signature Guarantee:3 ___________________________

---------
3   Signatures must be guaranteed by an "eligible guarantor institution"
    meeting the requirements of the Registrar, which requirements include
    membership or participation in the Note Transfer Agent 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.

                                    A-2-12
<PAGE>

                        SCHEDULE OF EXCHANGES OF NOTES4

The following exchanges of a part of this Global Note for Physical Notes or a
part of another Global Note have been made:

<TABLE>
                       Amount of          Amount of       Principal amount
                      decrease in        increase in       of this Global
                    principal amount   principal amount    Note following       Signature of
                     of this Global     of this Global    such decrease (or      authorized
Date of Exchange          Note               Note             increase)      officer of Trustee
----------------    ----------------   ----------------   -----------------  ------------------
<S>                    <C>                 <C>                   <C>               <C>

</TABLE>
---------
4    For Global Notes

                                    A-2-13
<PAGE>

                                                                      EXHIBIT B

                               RESTRICTED LEGEND

         THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "SECURITIES ACT"), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR
OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE. BY ITS
ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER

         (1)      REPRESENTS THAT

                  (A) IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A "QUALIFIED
         INSTITUTIONAL BUYER" (WITHIN THE MEANING OF RULE 144A UNDER THE
         SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH
         RESPECT TO EACH SUCH ACCOUNT, OR

                  (B) IT IS NOT A U.S. PERSON (WITHIN THE MEANING OF REGULATION
         S UNDER THE SECURITIES ACT) AND

         (2) AGREES FOR THE BENEFIT OF THE COMPANY THAT IT WILL NOT OFFER,
SELL, PLEDGE OR OTHERWISE TRANSFER THIS NOTE OR ANY BENEFICIAL INTEREST HEREIN,
EXCEPT IN ACCORDANCE WITH THE SECURITIES ACT AND ANY APPLICABLE SECURITIES LAWS
OF ANY STATE OF THE UNITED STATES AND ONLY

                  (A)      TO THE COMPANY,

                  (B)      PURSUANT TO A REGISTRATION STATEMENT WHICH HAS
          BECOME EFFECTIVE UNDER THE SECURITIES ACT,

                  (C)      TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE
          WITH RULE 144A UNDER THE SECURITIES ACT,

                  (D)      IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE
          904 OF REGULATION S UNDER THE SECURITIES ACT,

                  (E)      PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED
          BY RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION
          FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.

                                      B-1
<PAGE>

PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH (2)(E) ABOVE, THE
COMPANY RESERVES THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS,
CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO
DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE
SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE
AS TO THE AVAILABILITY OF ANY RULE 144 EXEMPTION FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT.

                                      B-2
<PAGE>

                                                                      EXHIBIT C

                                   DTC LEGEND

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY
OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER
NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS
MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS A BENEFICIAL INTEREST HEREIN.

         TRANSFERS OF THIS GLOBAL NOTE ARE LIMITED TO TRANSFERS IN WHOLE, BUT
NOT IN PART, TO NOMINEES OF CEDE & CO. OR TO A SUCCESSOR THEREOF OR SUCH
SUCCESSOR'S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE ARE LIMITED
TO TRANSFERS MADE IN ACCORDANCE WITH THE TRANSFER PROVISIONS OF THE INDENTURE.

                                      C-1
<PAGE>

                                                                      EXHIBIT D

                            Regulation S Certificate

                                                                ---------, ----

Bank One, National Association
[ADDRESS OF TRUSTEE]
Attention: Corporate Trust Administration

         Re:      IPALCO Enterprises, Inc.
                  [7.375% Senior Secured Notes due 2008 (the "Notes")]
                  [7.625% Senior Secured Notes due 2011 (the "Notes")]
                  Issued under the Indenture (the "Indenture") dated as
                  of November 14, 2001, relating to the Notes
                  -----------------------------------------------------

Dear Sirs:

         Terms are used in this Certificate as used in Regulation S
("Regulation S") under the Securities Act of 1933, as amended (the "Securities
Act"), except as otherwise stated herein.

         [CHECK A OR B AS APPLICABLE.]

         |_|  A.  This Certificate relates to our proposed transfer of $____
                  principal amount of Notes issued under the Indenture.  We
                  hereby certify as follows:

                  1.       The offer and sale of the Notes was not and will not
                           be made to a person in the United States (unless
                           such person is excluded from the definition of "U.S.
                           person" pursuant to Rule 902(k)(2)(vi) or the
                           account held by it for which it is acting is
                           excluded from the definition of "U.S. person"
                           pursuant to Rule 902(k)(2)(i) under the
                           circumstances described in Rule 902(g)(3)) and such
                           offer and sale was not and will not be specifically
                           targeted at an identifiable group of U.S. citizens
                           abroad.

                  2.       Unless the circumstances described in the
                           parenthetical in paragraph 1 above are applicable,
                           either (a) at the time the buy order was originated,
                           the buyer was outside the United States or we and
                           any person acting on our behalf reasonably believed
                           that the buyer was outside the United States or (b)
                           the transaction was executed in, on or through the
                           facilities of a designated offshore securities
                           market, and neither we nor any person acting on our
                           behalf knows that

                                      D-1
<PAGE>

                           the transaction was pre-arranged with a buyer in
                           the United States.

                  3.       Neither we, any of our affiliates, nor any person
                           acting on our or their behalf has made any directed
                           selling efforts in the United States with respect to
                           the Notes.

                  4.       The proposed transfer of Notes is not part of a plan
                           or scheme to evade the registration requirements of
                           the Securities Act.

                  5.       If we are a dealer or a person receiving a selling
                           concession, fee or other remuneration in respect of
                           the Notes, and the proposed transfer takes place
                           during the Restricted Period (as defined in the
                           Indenture), or we are an officer or director of the
                           Company or an Initial Purchaser (as defined in the
                           Indenture), we certify that the proposed transfer is
                           being made in accordance with the provisions of Rule
                           904(b) of Regulation S.

         |_|  B.  This Certificate relates to our proposed exchange of $____
                  principal amount of Notes issued under the Indenture for an
                  equal principal amount of Notes to be held by us.  We hereby
                  certify as follows:

                  1.       At the time the offer and sale of the Notes was made
                           to us, either (i) we were not in the United States
                           or (ii) we were excluded from the definition of
                           "U.S. person" pursuant to Rule 902(k)(2)(vi) or the
                           account held by us for which we were acting
                           was excluded from the definition of "U.S. person"
                           pursuant to Rule 902(k)(2)(i) under the circumstances
                           described in Rule 902(g)(3); and we were not a member
                           of an identifiable group of U.S. citizens abroad.

                  2.       Unless the circumstances described in paragraph
                           1(ii) above are applicable, either (a) at the time
                           our buy order was originated, we were outside the
                           United States or (b) the transaction was executed
                           in, on or through the facilities of a designated
                           offshore securities market and we did not
                           pre-arrange the transaction in the United States.

                  3.       The proposed exchange of Notes is not part of a plan
                           or scheme to evade the registration requirements of
                           the Securities Act.

         You and the Company are entitled to rely upon this Certificate and are
irrevocably authorized to produce this Certificate or a copy hereof to any

                                      D-2
<PAGE>

interested party in any administrative or legal proceeding or official inquiry
with respect to the matters covered hereby.

                               Very truly yours,

                               [NAME OF SELLER (FOR TRANSFERS)
                                  OR OWNER (FOR EXCHANGES)]

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

Date:  _______________________

                                      D-3
<PAGE>

                                                                      EXHIBIT E

                             Rule 144A Certificate

                                                                ---------, ----

Bank One, National Association
[ADDRESS OF TRUSTEE]
Attention: Corporate Trust Administration

         Re:      IPALCO Enterprises, Inc.
                  [7.375% Senior Secured Notes due 2008 (the "Notes")]
                  [7.625% Senior Secured Notes due 2011 (the "Notes")]
                  Issued under the Indenture (the "Indenture") dated as
                  of November 14, 2001, relating to the Notes
                  -----------------------------------------------------

Ladies and Gentlemen:

         TO BE COMPLETED BY PURCHASER IF (1) ABOVE IS CHECKED.

         This Certificate relates to:

         [CHECK A OR B AS APPLICABLE.]

         |_|  A.  Our proposed purchase of $____ principal amount of Notes
                  issued under the Indenture.

         |_|  B.  Our proposed exchange of $____ principal amount of Notes
                  issued under the Indenture for an equal principal amount
                  of Notes to be held by us.

         We and, if applicable, each account for which we are acting in the
aggregate owned and invested more than $100,000,000 in securities of issuers
that are not affiliated with us (or such accounts, if applicable), as of
_________, 200_, which is a date on or since close of our most recent fiscal
year. We and, if applicable, each account for which we are acting, are a
qualified institutional buyer within the meaning of Rule 144A ("Rule 144A")
under the Securities Act of 1933, as amended (the "Securities Act"). If we are
acting on behalf of an account, we exercise sole investment discretion with
respect to such account. We are aware that the transfer of Notes to us, or such
exchange, as applicable, is being made in reliance upon the exemption from the
provisions of Section 5 of the Securities Act provided by Rule 144A. Prior to
the date of this Certificate we have received such information regarding the
Company as we have requested pursuant to Rule 144A(d)(4) or have determined not
to request such information.

         You and the Company are entitled to rely upon this Certificate and are
irrevocably authorized to produce this Certificate or a copy hereof to any

                                      E-1
<PAGE>

interested party in any administrative or legal proceeding or official inquiry
with respect to the matters covered hereby.

                               Very truly yours,

                               [NAME OF PURCHASER (FOR
                                  TRANSFERS) OR OWNER (FOR
                                  EXCHANGES)]

                               By:
                                  --------------------------------------------
                                  Name:
                                  Title:
                                  Address:
Date:  _____________________

                                      E-2
<PAGE>

                                                                      EXHIBIT F

                  [COMPLETE FORM I OR FORM II AS APPLICABLE.]

                                    [FORM I]

                      Certificate of Beneficial Ownership

To:      Bank One, National Association
         [ADDRESS OF TRUSTEE]
         Attention: Corporate Trust Administration OR

         [Euroclear Bank S.A./N.V., as operator of the Euroclear System] OR

         [Clearstream Banking SA]

         Re:      IPALCO Enterprises, Inc.
                  [7.375% Senior Secured Notes due 2008 (the "Notes")]
                  [7.625% Senior Secured Notes due 2011 (the "Notes")]
                  Issued under the Indenture (the "Indenture") dated as
                  of November 14, 2001, relating to the Notes
                  -----------------------------------------------------

Ladies and Gentlemen:

         We are the beneficial owner of $____ principal amount of Notes issued
under the Indenture and represented by a Temporary Offshore Global Note (as
defined in the Indenture).

         We hereby certify as follows:

         [CHECK A OR B AS APPLICABLE.]

         |_|  A.  We are a non-U.S. person (within the meaning of Regulation S
                  under the Securities Act of 1933, as amended).

         |_|  B.  We are a U.S. person (within the meaning of Regulation S
                  under the Securities Act of 1933, as amended) that purchased
                  the Notes in a transaction that did not require registration
                  under the Securities Act of 1933, as amended.

         You and the Company are entitled to rely upon this Certificate and are
irrevocably authorized to produce this Certificate or a copy hereof to any
interested party in any administrative or legal proceeding or official inquiry
with respect to the matters covered hereby.

                                      F-1
<PAGE>

                               Very truly yours,

                               [NAME OF BENEFICIAL OWNER]

                               By:
                                   ------------------------------------------
                                   Name:
                                   Title:
                                   Address:
Date:  _____________________

                                   [FORM II]

                      Certificate of Beneficial Ownership

To:      Bank One, National Association
         [ADDRESS OF TRUSTEE]
         Attention: Corporate Trust Administration

Re:      IPALCO Enterprises
         [7.375% Senior Secured Notes due 2008 (the "Notes")]
         [7.625% Senior Secured Notes due 2011 (the "Notes")]
         Issued under the Indenture (the "Indenture") dated as
         of November 14, 2001 relating to the Notes
         -----------------------------------------------------

Ladies and Gentlemen:

         This is to certify that based solely on certifications we have
received in writing, by tested telex or by electronic transmission from member
organizations ("Member Organizations") appearing in our records as persons
being entitled to a portion of the principal amount of Notes represented by a
Temporary Offshore Global Note issued under the above-referenced Indenture,
that as of the date hereof, $____ principal amount of Notes represented by the
Temporary Offshore Global Note being submitted herewith for exchange is
beneficially owned by persons that are either (i) non-U.S. persons (within the
meaning of Regulation S under the Securities Act of 1933, as amended) or (ii)
U.S. persons that purchased the Notes in a transaction that did not require
registration under the Securities Act of 1933, as amended.

         We further certify that (i) we are not submitting herewith for
exchange any portion of such Temporary Offshore Global Note excepted in such
Member Organization certifications and (ii) as of the date hereof we have not
received any notification from any Member Organization to the effect that the
statements made by such Member Organization with respect to any portion of such
Temporary Offshore Global Note submitted herewith for exchange are no longer
true and cannot be relied upon as of the date hereof.

                                      F-2
<PAGE>

         You and the Company are entitled to rely upon this Certificate and are
irrevocably authorized to produce this Certificate or a copy hereof to any
interested party in any administrative or legal proceeding or official inquiry
with respect to the matters covered hereby.

                               Yours faithfully,

                               [EUROCLEAR BANK S.A./N.V., as
                                  operator of the Euroclear System]

                                              OR

                               [CLEARSTREAM BANKING SA]

                               By:
                                  ---------------------------------------------
                                  Name:
                                  Title:
                                  Address:
Date:  _____________________

                                      F-3
<PAGE>

                                                                      EXHIBIT G

THIS NOTE IS A TEMPORARY GLOBAL NOTE. PRIOR TO THE EXPIRATION OF THE RESTRICTED
PERIOD APPLICABLE HERETO, BENEFICIAL INTERESTS HEREIN MAY NOT BE HELD BY ANY
PERSON OTHER THAN (1) A NON-U.S. PERSON OR (2) A U.S. PERSON THAT PURCHASED
SUCH INTEREST IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE U.S.
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"). BENEFICIAL INTERESTS
HEREIN ARE NOT EXCHANGEABLE FOR PHYSICAL NOTES OTHER THAN A PERMANENT GLOBAL
NOTE IN ACCORDANCE WITH THE TERMS OF THE INDENTURE. TERMS IN THIS LEGEND ARE
USED AS USED IN REGULATION S UNDER THE SECURITIES ACT.

                                      G-1
<PAGE>Exhibit 4.2

                                PLEDGE AGREEMENT

     THIS PLEDGE AGREEMENT (this "Agreement") is made and entered into as of
November 14, 2001, by IPALCO Enterprises, Inc., an Indiana corporation (the
"Pledgor") in favor of Bank One, National Association, a national banking
association, as collateral agent (the "Collateral Agent") for the benefit of
the Secured Parties (as defined below).

                              W I T N E S S E T H:

     WHEREAS, Indianapolis Power & Light Company, an Indiana corporation
("IPL") is a direct owned subsidiary of the Pledgor; and the Pledgor is the
record and beneficial owner of all of the outstanding common stock of IPL;

     WHEREAS, Pledgor and Bank One, National Association, as trustee (the
"Trustee"), have entered into that certain indenture dated as of November 14,
2001 (as amended, amended and restated, supplemented or otherwise modified from
time to time, the "Indenture"), pursuant to which Pledgor has issued
$375,000,000 aggregate principal amount of 7.375% Senior Secured Notes due 2008
and $375,000,000 aggregate principal amount of 7.625% Senior Secured Notes due
2011 (collectively, the "Senior Notes");

     WHEREAS, the Senior Notes are being issued to repay all outstanding
borrowings outstanding under Pledgor's revolving credit facility and the
Pledgor will distribute the remaining amount of the net proceeds to its parent
corporation, The AES Corporation, a Delaware corporation ("AES");

     WHEREAS, the terms of the Indenture require that the Pledgor (a) pledge to
the Collateral Agent for the equal and ratable benefit of the holders of the
outstanding Senior Notes (the "Noteholders") and grant to the Collateral Agent
for the equal and ratable benefit of the Noteholders a security interest in,
the Collateral (as defined herein) and (b) execute and deliver this Agreement
in order to secure the payment and performance by the Pledgor of all of the
Senior Note Obligations (as defined herein) of the Pledgor under the Indenture
and the Senior Notes;

     WHEREAS, the Pledgor may incur additional secured indebtedness from time
to time, to the extent permitted pursuant to the Indenture, that is by its
terms to be equally and ratably secured hereunder with the Senior Note
Obligations ("Additional Secured Debt"), as hereinafter provided (with any
holders of Additional Secured Debt from time to time being herein collectively
called "Additional Debtholders", and with all documentation evidencing, or
entered into in connection with, any Additional Secured Debt, including without
limitation any mortgage, indenture or other instrument, being herein called
"Additional Debt Documents");

     WHEREAS, any such Additional Secured Debt issued after the date hereof
shall be secured equally and ratably with the Senior Note Obligations, pursuant
to a Pledge Agreement Supplement substantially in the form of Annex A hereto;
and

<PAGE>
                                       2

     WHEREAS, it is a condition precedent to the obligations of the initial
purchasers of the Senior Notes under the purchase agreement (the "Purchase
Agreement") entered into in connection with the issuance of the Senior Notes
that the Pledgor shall have executed and delivered to the Collateral Agent this
Agreement and it is to the advantage of the Pledgor that the Senior Notes be
issued.

                                   AGREEMENT

     NOW, THEREFORE, in consideration of the premises, and in order to induce
the Noteholders to purchase the Senior Notes, the Pledgor hereby covenants and
agrees with the Collateral Agent for its benefit and the equal and ratable
benefit of the Noteholders and the Additional Debtholders, which shall be
identified from time to time on Schedule I hereto in accordance with Section
18.17, in each case to the extent from time to time holding Obligations of the
Pledgor secured hereunder (collectively, and together with the Collateral
Agent, the "Secured Parties") as follows:

     SECTION 1. Definitions. Capitalized terms used herein and not defined
herein shall have the meanings given to such terms in the Indenture. The
following terms when used in this Agreement shall have the following meanings:

          "Event of Default" shall mean any Event of Default at any time under,
     and as defined in, the Indenture and any Additional Debt Documents.

          "Majority Holders" shall mean, at any time, the holders of over 50%
     in aggregate principal amount of the outstanding Obligations; provided,
     that with respect to any Obligations comprised of indebtedness issued with
     original issue discount, the amount outstanding at any time shall be the
     face amount of such indebtedness less the remaining unamortized portion of
     the original issue discount of such indebtedness at such time as
     determined in conformity with GAAP.

          "Obligations" shall mean, collectively and without duplication, all
     such obligations, liabilities, sums and expenses as follows:

               (i) the full and prompt payment when due (whether at stated
          maturity, by acceleration or otherwise) of all (x) principal of and
          interest on the Senior Notes and (y) all other obligations (including
          obligations which, but for the automatic stay under Section 362(a) of
          the Bankruptcy Code, would become due), liabilities and indebtedness
          of the Pledgor to the holders of the Senior Notes (including, without
          limitation, interest accruing at the then applicable rate provided in
          the Senior Notes, respectively after the maturity thereof and
          interest accruing at the then applicable rate provided in the Senior
          Notes, respectively after the filing of any petition in bankruptcy,
          or the commencement of any insolvency, reorganization or like
          proceeding relating to the Pledgor, whether or not a claim for
          post-filing or post-petition interest is allowed in such proceeding),
          whether direct or indirect, absolute or contingent, due or to become
          due, or now existing or hereafter incurred under, arising out of or
          in connection with the Senior Notes and the Indenture, and the due

<PAGE>
                                       3

          performance of, and compliance with, all of the terms, conditions and
          agreements contained therein by the Pledgor (all such obligations,
          liabilities and indebtedness described in this clause (i) being
          herein collectively called the "Senior Note Obligations");

               (ii) the full and prompt payment when due (whether at stated
          maturity, by acceleration or otherwise) of all (x) principal of and
          interest on any Additional Secured Debt and (y) all other obligations
          (including obligations which, but for the automatic stay under
          Section 362(a) of the Bankruptcy Code, would become due), liabilities
          and indebtedness (including, without limitation, indemnitees, fees
          and interest thereon) of the Pledgor to the Additional Debtholders
          (including, without limitation, interest accruing at the then
          applicable rate provided in any class of Additional Secured Debt
          after the maturity thereof and interest accruing at the then
          applicable rate provided in such Additional Secured Debt after the
          filing of any petition in bankruptcy, or the commencement of any
          insolvency, reorganization or like proceeding relating to the
          Pledgor, whether or not a claim for post-filing or post-petition
          interest is allowed in such proceeding) ,whether direct or indirect,
          absolute or contingent, due or to become due, or now existing or
          hereafter incurred under, arising out of or in connection with any
          Additional Debt Documents, and the due performance of, and compliance
          with, all of the terms, conditions and agreements contained therein
          by the Pledgor (all such obligations, liabilities and indebtedness
          described in this clause (ii) being herein collectively called the
          "Additional Debt Obligations");

               (iii) (x) any and all sums advanced by the Collateral Agent in
          order to preserve the Collateral or preserve its security interest in
          the Collateral in a manner not in violation of the terms hereof and
          (y) any and all liabilities, obligations, losses, damages, penalties,
          actions, judgments, suits, costs, expenses or disbursements of any
          kind or nature whatsoever which may be imposed on, incurred by or
          asserted against the Collateral Agent in performing its duties
          hereunder, or in any way relating to or arising out of its actions as
          Collateral Agent in respect of the Pledge Agreement, including any
          other unreimbursed fees and expenses for which the Collateral Agent
          is to be reimbursed pursuant to Section 14 hereof; except for those
          resulting solely from the Collateral Agent's own gross negligence or
          willful misconduct;

               (iv) in the event of any proceeding for the collection or
          enforcement of any indebtedness, obligations, or liabilities of the
          Pledgor referred to in clauses (i) through (iii) above, after an
          Event of Default on any of the Obligations shall have occurred and be
          continuing, the reasonable expenses of retaking, holding, preparing
          for sale, selling or otherwise disposing of or realizing on the
          Collateral or of any exercise by the Collateral Agent of its rights
          hereunder, together with reasonable attorneys' fees and costs; and

               (v) all amounts paid by any of the Secured Parties as to which
          such Secured Party has the right to reimbursement under Section 14 of
          this Agreement.

<PAGE>
                                       4

     SECTION 2. Pledge. To secure the full and punctual payment when due and
the full and punctual performance of all of the Obligations, the Pledgor hereby
grants to the Collateral Agent, for the benefit of the Collateral Agent and the
other Secured Parties, a security interest in all of its right, title and
interest in and to the following, whether owned as of the date hereof or
hereafter acquired or arising (the "Collateral"):

          (i) all of the issued and outstanding shares of common stock of IPL
     listed on Schedule II hereto or hereafter acquired (the "Pledged Shares");

          (ii) all certificates representing any of the foregoing; and

          (iii) all dividends, cash, instruments and other property and
     proceeds from time to time received, receivable or otherwise distributed
     in respect of or in exchange for any of the foregoing, excluding all cash
     dividends paid in respect of the Pledged Shares so long as no Event of
     Default shall have occurred and be continuing at the time of such payment.

     SECTION 3. Delivery of Collateral. (a) The Pledgor shall (i) on the date
of this Agreement and (ii) at any time or from time to time thereafter when the
Pledgor shall acquire rights in any stock certificate (including, without
limitation, any certificate representing a stock dividend or a distribution in
connection with any reclassification, increase or reduction of capital or any
certificate issued in connection with any reorganization), option or rights in
respect of the Pledged Shares, whether in addition to, in substitution of, as a
conversion of, or in exchange for, any Pledged Shares, or otherwise in respect
thereof, promptly thereafter, deposit as security with the Collateral Agent the
Pledged Shares owned by the Pledgor and any and all certificates or instruments
representing or evidencing the Collateral. Any and all such certificates or
instruments which shall be held by or on behalf of the Collateral Agent, shall
be in suitable form for transfer by delivery, or shall be accompanied by duly
executed instruments of transfer or assignment in blank, all in form and
substance satisfactory to the Collateral Agent.

     From and after the date hereof, the Collateral Agent shall have the right,
at any time after the occurrence and during the continuance of an Event of
Default, and in its discretion without notice to the Pledgor, to transfer to or
to register in the name of the Collateral Agent or any of its nominees any or
all of the Collateral and to exchange certificates or instruments representing
or evidencing Collateral for certificates or instruments of different
denominations, subject to the receipt of any applicable regulatory approvals.

     (b) Any sums paid upon or in respect of the Pledged Shares upon the
liquidation or dissolution of IPL shall be paid over to the Collateral Agent to
be held by it hereunder as additional collateral security for the Obligations,
and in case any distribution of capital shall be made on or in respect of the
Pledged Shares or any property shall be distributed upon or with respect to the
Pledged Shares pursuant to the recapitalization or reclassification of the
capital of IPL or pursuant to the reorganization thereof, the property so
distributed shall, unless otherwise subject to a perfected security interest in
favor of the Collateral Agent, and except as otherwise expressly permitted
hereby, be delivered to the Collateral Agent to be held by it hereunder as
additional collateral security for the Obligations. If any sums of money or
property so paid or distributed in respect of the Pledged Shares shall be
received by the Pledgor, the Pledgor shall, until such money or property is

<PAGE>
                                       5

paid or delivered to the Collateral Agent, hold such money or property in trust
for the Secured Parties, segregated from other funds of the Pledgor, as
additional collateral security for the Obligations.

     SECTION 4. Representations and Warranties. The Pledgor hereby represents
and warrants on the date hereof:

     (a) Each of the Pledgor and IPL has been duly incorporated, is validly
existing as a corporation under the laws of Indiana and has the corporate power
and authority required to carry on its business as it is currently being
conducted and to own, lease and operate its properties, and each is duly
qualified and is in good standing as a foreign corporation authorized to do
business in each jurisdiction in which the nature of its business or its
ownership or leasing of property requires such qualification, except where the
failure to be so qualified would not have a material adverse effect on the
business, financial condition or results of operations of the Pledgor and IPL,
taken as a whole.

     (b) The Pledgor is the record and beneficial owner of the Pledged Shares
free and clear of any Lien or claim of any other Person, except for the Lien
created by this Agreement (except for any Liens existing on or after the date
hereof that are permitted under the Indenture, or any options in favor of such
Pledged Shares).

     (c) The Pledgor has the legal right to execute and deliver and to grant
the security interest in the Collateral pursuant to this Agreement, and the
execution, delivery and performance of this Agreement (in the case of
performance, subject to receipt of any applicable regulatory approvals) do not
(x) conflict with or constitute a breach of any of the terms or provisions of,
or a default under, the charter or by-laws of the Pledgor or any agreement,
indenture or other instrument to which the Pledgor is a party or by which the
Pledgor or its property is bound, or violate or conflict with any laws,
administrative regulations or rulings or court decrees applicable to the
Pledgor or its respective property (including, without limitation, Regulations
T, U and X of the Board of Governors of the Federal Reserve System), or (y)
result in the creation or imposition of any Lien on any assets of the Pledgor,
other than the Lien contemplated hereby.

     (d) The Pledged Shares have been duly authorized and validly issued and
are fully paid and non-assessable.

     (e) The Pledged Shares constitute all of the issued and outstanding common
stock of IPL.

     (f) The Pledgor has full power and authority to enter into this Agreement
and has the right to vote, pledge and grant a security interest in the
Collateral as provided by this Agreement.

     (g) This Agreement has been duly authorized, executed and delivered by the
Pledgor and constitutes a legal, valid and binding obligation of the Pledgor,
enforceable, subject to the receipt of any applicable regulatory approvals,
against the Pledgor in accordance with its terms, except as enforceability may
be limited by bankruptcy, insolvency, fraudulent conveyance, reorganization,

<PAGE>
                                       6

moratorium or similar laws affecting the enforcement of creditors' right and
remedies generally and by equitable principles of general applicability.

     (h) Upon the delivery to the Collateral Agent of the Collateral, the
pledge of the Collateral pursuant to this Agreement will create a valid and
perfected first priority (subject to any Liens existing on or after the date
hereof that are permitted under the Indenture) security interest in the
Collateral, securing the payment of the Obligations for the benefit of the
Collateral Agent and the other Secured Parties, and (except as otherwise
specifically provided herein) enforceable as such against all creditors of the
Pledgor, any Persons purporting to purchase any of the Collateral from the
Pledgor and any other Persons whomsoever.

     (i) No consent of any other Person and no consent, authorization,
approval, or other action by, and no notice to or filing with, any governmental
authority or regulatory body is required to be obtained by the Pledgor either
(i) for the pledge by the Pledgor of the Collateral pursuant to this Agreement
or for the execution, delivery or, subject to the receipt of any applicable
regulatory approvals, performance of this Agreement by the Pledgor, (ii) for
the validity or, subject to the receipt of any applicable regulatory approvals,
enforceability of the Agreement or the perfection or enforceability of the
Collateral Agent's security interest in the Collateral or (iii) subject to the
receipt of any applicable regulatory approvals, for the exercise by the
Collateral Agent of the voting or other rights provided for in this Agreement
or the remedies in respect of the Collateral pursuant to this Agreement (except
as may be required in connection with such disposition by laws affecting the
offering and sale of securities).

     (j) No litigation, investigation or proceeding of or before any arbitrator
or governmental authority is pending or, to the best knowledge of the Pledgor,
threatened by or against the Pledgor or against any of the Pledgor's properties
or revenues with respect to this Agreement or any of the transactions
contemplated hereby.

     (k) The chief executive office of the Pledgor is located at its address
set forth on the signature pages of this Agreement.

     SECTION 5. Further Assurance. The Pledgor will at all times cause the
security interests granted pursuant to this Agreement to constitute valid
perfected first priority security interests in the Collateral (subject to any
Liens that are permitted under the Indenture), and, (except as otherwise
specifically provided herein) enforceable as such against all creditors of the
Pledgor, any Persons purporting to purchase any Collateral from the Pledgor and
any other Persons whomsoever. The Pledgor will, promptly upon request by the
Collateral Agent, execute and deliver or cause to be executed and delivered to
the Collateral Agent all such instruments and other documents, all in form and
substance satisfactory to the Collateral Agent and take any other actions that
are necessary or desirable to perfect, continue the perfection of, or protect
the first priority of the Collateral Agent's security interest in, the
Collateral, to protect the Collateral against the rights, claims, or interests
of third persons (except to the extent that Liens are permitted under the
Indenture), to enable the Collateral Agent to exercise or enforce its rights
and remedies hereunder, or otherwise to effect the purposes of this Agreement,
including the filing of any financing or continuation statements; provided that
the Pledgor shall not be required to seek regulatory approval to enable the
Collateral Agent to exercise or enforce its rights and remedies hereunder until
an Event of Default has occurred and is continuing with respect to

<PAGE>
                                       7

which a Default Notice has been delivered to the Collateral Agent in accordance
with Section 12(e) hereof. The Pledgor also hereby authorizes the Collateral
Agent to file any financing or continuation statements with respect to the
Collateral without the signature of the Pledgor to the extent permitted by
applicable law. The Pledgor will pay all costs incurred in connection with any
of the foregoing; provided, however, the Collateral Agent shall have no
obligation to make such filings.

     SECTION 6. Voting Rights; Dividends; Etc. (a) So long as no Event of
Default shall have occurred and be continuing with respect to which a Default
Notice has been delivered to the Collateral Agent in accordance with Section
12(e) hereof, the Pledgor shall be entitled to exercise any and all voting and
other consensual rights pertaining to the Pledged Shares or any part thereof
for any purpose not inconsistent with the terms of this Agreement, the
Indenture or the Additional Debt Documents.

     (b) So long as no Event of Default shall have occurred and be continuing
with respect to which a Default Notice has been delivered to the Collateral
Agent in accordance with Section 12(e) hereof, and subject to the terms of the
Indenture and the Additional Debt Documents, the Pledgor shall be entitled to
receive, and to utilize free and clear of the Lien of this Agreement and
without any further action on the part of the Pledgor, the Collateral Agent,
the Secured Parties or any other Person, all cash dividends paid from time to
time in respect of the Pledged Shares.

     (c) Any and all (i) dividends and other distributions (other than cash
dividends permitted under Section 6(b) hereof) received, receivable or
otherwise distributed in respect of, or in exchange for, any Collateral and
(ii) cash paid, payable or otherwise distributed in redemption of, or in
exchange for, any Collateral, shall in each case be forthwith delivered to the
Collateral Agent to hold as Collateral and shall, if received by the Pledgor,
be received in trust for the benefit of the Collateral Agent and the Secured
Parties, be segregated from the other property and funds of the Pledgor and be
forthwith delivered to the Collateral Agent as Collateral in the same form as
so received (with any necessary endorsements). The Pledgor shall notify the
Collateral Agent in writing upon the receipt of any cash in accordance with the
previous sentence.

     (d) Subject to receipt of any necessary regulatory approval, the
Collateral Agent shall execute and deliver (or cause to be executed and
delivered) to the Pledgor all such proxies and other instruments as the Pledgor
may reasonably request for the purpose of enabling the Pledgor to exercise the
voting and other rights that it is entitled to exercise pursuant to Sections
6(a) and 6(b) above.

     (e) Upon the occurrence and during the continuance of an Event of Default
with respect to which a Default Notice has been delivered to the Collateral
Agent in accordance with Section 12(e) hereof, (i) all rights of the Pledgor to
exercise the voting and other consensual rights that it would otherwise be
entitled to exercise pursuant to Section 6(a) shall cease, and all such rights
shall thereupon become, subject to receipt of any necessary regulatory
approval, vested in the Collateral Agent, which, to the extent permitted by
law, shall thereupon have the sole right to exercise such voting and other
consensual rights, (ii) all dividends and other distributions payable in
respect of the Collateral shall be paid to the Collateral Agent and the

<PAGE>
                                       8

Pledgor's right to receive such cash payments pursuant to Section 6(b) hereof
shall immediately cease and (iii) any and all rights of conversion, exchange
and subscription and any other rights, privileges or options pertaining to the
Pledged Shares shall become vested in the Collateral Agent, which, to the
extent permitted by law, shall thereupon have the sole right to exercise such
rights, privileges and options.

     (f) Upon the occurrence and during the continuance of an Event of Default
with respect to which a Default Notice has been delivered to the Collateral
Agent in accordance with Section 12(e) hereof, the Pledgor shall, subject to
receipt of any necessary regulatory approval, execute and deliver (or cause to
be executed and delivered) to the Collateral Agent all such proxies and other
instruments as the Collateral Agent may reasonably request for the purpose of
enabling the Collateral Agent to exercise the voting and other rights that it
is entitled to exercise pursuant to Section 6(e) above.

     (g) All payments of dividends and other distributions that are received by
the Pledgor contrary to the provisions of this Section 6 shall be received in
trust for the benefit of the Collateral Agent and the Secured Parties, shall be
segregated from the other property or funds of the Pledgor and shall be
forthwith delivered to the Collateral Agent as Collateral in the same form as
so received (with any necessary endorsements).

     (h) The Collateral Agent shall invest any portion of the Collateral that
is comprised of cash in Permitted Investments as may be directed by the Pledgor
in writing from time to time. "Permitted Investments" means (i) debt
obligations issued or guaranteed by the government of the United States of
America or any agency thereof for which the full faith and credit of the United
States of America is pledged to secure payment in full at maturity and which
are not redeemable at the option of the issuer prior to maturity and (ii)
investments in time deposits, certificates of deposit or money market deposits
entitled to U.S. Federal deposit insurance for the full amount thereof or
issued by a bank or trust company which is organized under the laws of the
United States or any state thereof having capital in excess of $250 million or
any money-market fund sponsored by any registered broker dealer or mutual fund
distributor; provided that no such investment shall mature later than 180 days
after the date of acquisition thereof. The Collateral Agent shall have no
liability (including for lost profits) in connection with investments of the
Collateral.

     SECTION 7. Covenants. The Pledgor hereby covenants and agrees with the
Collateral Agent and the other Secured Parties, that from and after the date of
this Agreement and until the Obligations have been paid in full, as follows:

     (a) the Pledgor agrees that at all times it will be the sole beneficial
owner of the Collateral and will not (i) except as otherwise expressly
permitted hereby, sell, assign, transfer, convey or otherwise dispose of, or
grant any option or warrant with respect to, any interest in any of the
Collateral without the prior written consent of the Collateral Agent at the
direction of the Majority Holders, (ii) create or permit to exist any Lien upon
or with respect to any of the Collateral, except for the security interest
granted under this Agreement, and except for Liens that are permitted under the
Indenture, (iii) enter into any agreement or understanding that purports to or
that may restrict or inhibit the Collateral Agent's rights or remedies
hereunder, including, without limitation, the Collateral Agent's right to sell

<PAGE>
                                       9

or otherwise dispose of the Collateral, or (iv) take any other action with
respect to the Collateral which would result in a violation of the Indenture,
this Agreement or the Additional Debt Documents.

     (b) The Pledgor agrees that immediately upon becoming the beneficial owner
of other equity interests of IPL, other than any shares of preferred stock of
IPL outstanding of the date of this Pledge Agreement, it will either (i)
contribute such interests to IPL for cancellation or (ii) pledge and deliver
such interests to the Collateral Agent for its benefit and the ratable benefit
of the Secured Parties and grant to the Collateral Agent for its benefit and
the ratable benefit of the Secured Parties a continuing first priority security
interest in such other equity interests (as well as instruments of transfer or
assignment duly executed in blank and undated, all in form and substance
reasonably satisfactory to the Collateral Agent). The Pledgor further agrees
that in the case of clause (ii) of the preceding sentence to deliver to the
Collateral Agent a certificate executed by the Pledgor describing such
additional equity interests, other than any shares of preferred stock of IPL
outstanding on the date of this Pledge Agreement, and certifying that the same
have been duly pledged and delivered to the Collateral Agent hereunder.

     (c) The Pledgor hereby covenants and agrees that promptly after making a
decision to change its State of incorporation it will provide the Collateral
Agent with written notice of its intent to change its State of incorporation
and such notice will include: (i) the anticipated effective date of such
change, (ii) the name of the new State of incorporation, (iii) the new address
of its chief executive offices, if any, and (iv) any other information
reasonably necessary for the Collateral Agent to preserve the first priority
security interest in the Collateral.

     SECTION 8. Power of Attorney. The Pledgor hereby appoints and constitutes
the Collateral Agent as the Pledgor's attorney-in-fact to exercise all of the
following powers, subject to the receipt of any necessary regulatory approval,
upon the occurrence and during the continuance of an Event of Default with
respect to which a Default Notice has been delivered to the Collateral Agent in
accordance with Section 12(e) hereof: (i) collection of proceeds of any
Collateral; (ii) conveyance of any item of Collateral to any purchaser thereof;
(iii) giving of any notices or recording of any Liens under Section 5 hereof;
(iv) making of any payments or taking any acts under Section 9 hereof and (v)
paying or discharging taxes or Liens levied or placed upon or threatened
against the Collateral, the legality or validity thereof and the amounts
necessary to discharge the same to be determined in good faith by the
Collateral Agent in its sole discretion; (vi) defend any suit, action or
proceeding brought against the Pledgor with respect to any Collateral; and
(vii) exercise any of the rights set forth in Sections 6 and 12, make any
agreement with respect to the Collateral or otherwise deal with any Collateral
as fully and completely as though the Collateral Agent were the absolute owner
thereof for all purposes. At the Collateral Agent's request, the Majority
Holders, acting through the Trustee in the case of the Securities and through
the Additional Debtholders (or, if applicable, the Additional Secured Debt
Agent) in the case of the Additional Secured Debt, shall provide written
directions to the Collateral Agent with respect to the taking of any such
actions under this Section 8. The Collateral Agent's authority hereunder shall
include, without limitation, the authority to execute and give receipt for any
certificate of ownership relating to the Collateral, transfer title to any item
of Collateral, sign the Pledgor's name on all financing statements or any other
documents deemed necessary or appropriate to preserve, protect or perfect the
security interest in the Collateral and to file the same, prepare, file and
sign the Pledgor's name on any notice of Lien, and to take any other actions
arising from or incident to the powers granted to the Collateral

<PAGE>
                                      10

Agent in this Agreement. This power of attorney is coupled with an interest and
is irrevocable by the Pledgor.

     SECTION 9. Collateral Agent May Perform. If the Pledgor fails to perform
any agreement contained herein, the Collateral Agent may itself perform, or
cause performance of, such agreement, and the expenses of the Collateral Agent
(including the reasonable fees and expenses of its counsel) incurred in
connection therewith shall be payable by the Pledgor pursuant to Section 14
hereof.

     SECTION 10. No Assumption of Duties; Reasonable Care. The rights and
powers granted to the Collateral Agent hereunder are being granted in order to
preserve and protect the security interest of the Collateral Agent and the
other Secured Parties in and to the Collateral granted hereby and shall not be
interpreted to, and shall not, impose any duties on the Collateral Agent in
connection therewith. The Collateral Agent shall be deemed to have exercised
reasonable care, under Section 9-207 of the New York Uniform Commercial Code or
otherwise, in the custody and preservation of the Collateral in its possession
if the Collateral is accorded treatment substantially equal to that which the
Collateral Agent accords its own property, it being understood that the
Collateral Agent shall not have any responsibility for (i) ascertaining or
taking action with respect to calls, conversions, exchanges, maturities,
tenders or other matters relative to any Collateral, whether or not the
Collateral Agent has or is deemed to have knowledge of such matters, or (ii)
taking any necessary steps to preserve rights against any parties with respect
to any Collateral. The Collateral Agent shall be accountable only for amounts
that it actually receives as a result of the exercise of such powers, and
neither it nor its officers, directors, employees or agents shall be
responsible to the Pledgor for any act or failure to act hereunder, except for
their own gross negligence or willful misconduct.

     SECTION 11. Subsequent Changes Affecting Collateral. The Pledgor
represents to the Secured Parties that it has made its own arrangements for
keeping informed of changes or potential changes affecting the Collateral
(including, but not limited to, rights to convert, rights to subscribe, payment
of dividends, payments of interest and/or principal, reorganization or other
exchanges, tender offers and voting rights), and the Pledgor agrees that the
Collateral Agent and the Secured Parties shall have no responsibility or
liability for informing the Pledgor of any such changes or potential changes or
for taking any action or omitting to take any action with respect thereto. The
Pledgor covenants that it will not, without the prior written consent of the
Collateral Agent as directed in writing by the Trustee and any Additional
Secured Debt Agent, on behalf of the Majority Holders, vote to enable, or take
any other action to permit, IPL to issue any capital stock or other securities
convertible into or exercisable for shares of capital stock of IPL, except
issuances of such capital stock or other securities to Pledgor. The Pledgor
will defend the right, title and interest of the Collateral Agent and the
Secured Parties in and to the Collateral against the claims and demands of all
Persons. The Pledgor will advise the Collateral Agent and the Secured Parties
promptly, in reasonable detail, of (i) any Lien (other than Liens that are
permitted under the Indenture) on any Collateral which could adversely affect
the ability of the Collateral Agent to exercise any of its remedies hereunder
and (ii) the occurrence of any other event which could reasonably be expected
to have a material adverse effect on the security interest created hereby.

<PAGE>
                                      11

     SECTION 12. Remedies Upon Default. (a) If any Event of Default shall have
occurred and be continuing with respect to which a Default Notice has been
delivered to the Collateral Agent in accordance with Section 12(e) hereof, and
only to the extent the Majority Holders have so directed the Collateral Agent
in accordance with Section 12(e), the Collateral Agent shall have and be
entitled to exercise, in addition to all other rights given by law or by this
Agreement, all of the rights and remedies with respect to the Collateral of a
secured party under the Uniform Commercial Code (the "UCC") as in effect in the
State of New York at that time or any other applicable law and shall also be
entitled, without limitation, to exercise the rights set forth in this Section
12(a). The Collateral Agent may, subject to the provision of Section 12(e)
below, without notice and at its option, transfer or register, and the Pledgor
shall register or cause to be registered upon request therefor by the
Collateral Agent, the Collateral or any part thereof on the books of IPL into
the name of the Collateral Agent or the Collateral Agent's nominee(s), with or
without any indication that such Collateral is subject to the security interest
hereunder. In addition, with respect to any Collateral that shall then be in or
shall thereafter come into the possession or custody of the Collateral Agent,
the Collateral Agent may, subject to the provisions of Section 12(e) below,
sell or otherwise dispose of or cause the same to be sold or otherwise disposed
of at any broker's board or at public or private sale, in one or more sales or
lots, for cash or on credit or for future delivery, without assumption of any
credit risk. The purchaser of any or all Collateral so sold shall thereafter
hold the same absolutely, free from any claim, encumbrance or right of any kind
whatsoever. Unless any of the Collateral threatens to decline speedily in value
or is or becomes of a type sold on a recognized market, the Collateral Agent
will give the Pledgor reasonable notice of the time and place of any public
sale thereof, or of the time after which any private sale or other intended
disposition is to be made. Any sale of the Collateral conducted in conformity
with reasonable commercial practices of banks, insurance companies, commercial
finance companies, or other financial institutions disposing of property
similar to the Collateral shall be deemed to be commercially reasonable. Any
requirements of reasonable notice shall be met if such notice is mailed to the
Pledgor as provided below in Section 18.1, at least ten days before the time of
the sale or disposition. Any other requirement of notice, demand or
advertisement for sale is, to the extent permitted by law, waived. The
Collateral Agent or any other Secured Party may, in its own name or in the name
of a designee or nominee, buy any of the Collateral at any public sale and, if
permitted by applicable law, at any private sale. All expenses (including court
costs and reasonable attorneys' fees and disbursements) of, or incident to, the
enforcement of any of the provisions hereof shall be recoverable from the
proceeds of the sale or other disposition of the Collateral.

     (b) If, subject to the provisions of Section 12(e) below, the Collateral
Agent shall determine to exercise its right to sell any or all of the Pledged
Shares pursuant to Section 12(a) above, and if in the opinion of counsel for
the Collateral Agent it is necessary to have the Pledged Shares or that portion
thereof to be sold, registered under the provisions of the Securities Act of
1933, as amended (the "Securities Act"), the Pledgor, upon receipt by the
Pledgor of a written request from the Collateral Agent, as directed by and on
behalf of the Majority Holders, will cause IPL to (i) execute and deliver, and
cause its directors and officers to execute and deliver, all at the Pledgor's
expense, all such instruments and documents, and to do or cause to be done all
such other acts and things as may be necessary to register such Pledged Shares
under the provisions of the Securities Act, (ii) cause the registration
statement relating thereto to become effective and to remain effective for a
period of one year from the date of the first public offering of such Pledged
Shares, or that portion thereof to be sold and (iii) make all amendments

<PAGE>
                                      12

thereto and/or to the related prospectus that are necessary, all in conformity
with the requirements of the Securities Act and the rules and regulations of
the Securities and Exchange Commission applicable thereto. The Pledgor agrees
to cause IPL to comply with the provisions of the securities or "Blue Sky" laws
of any jurisdiction that the Collateral Agent shall designate for the sale of
the Pledged Shares and to make available to IPL's security holders, as soon as
practicable, an earnings statement (which need not be audited) that will
satisfy the provisions of Section 11(a) of the Securities Act. The Pledgor will
cause IPL to furnish to the Collateral Agent such number of copies as the
Collateral Agent may reasonably request of each preliminary and final
prospectus, to notify the Collateral Agent promptly of the happening of any
event as a result of which any then effective prospectus includes an untrue
statement of a material fact or omits to state a material fact required to be
stated therein or necessary to make the statements therein not misleading in
the light of then existing circumstances, and to cause the Collateral Agent to
be furnished with such number of copies as the Collateral Agent may request of
such supplement to or amendment of such prospectus. The Pledgor will, and will
cause IPL, to the maximum extent permitted by law, to indemnify, defend and
hold harmless the Collateral Agent and the Secured Parties from and against all
losses, liabilities, expenses or claims (including reasonable legal fees and
expenses and the reasonable costs of investigation) that the Collateral Agent
or any Secured Party may incur under the Securities Act or otherwise, insofar
as such losses, liabilities, expenses or claims arise out of or are based upon
any alleged untrue statement of a material fact contained in such registration
statement (or any amendment thereto) or in any preliminary or final prospectus
(or any amendment or supplement thereto), or arise out of or are based upon any
alleged omission to state a material fact required to be stated therein or
necessary to make the statements therein not misleading, except to the extent
that any such losses, liabilities, expenses or claims arise solely out of or
are based upon any such alleged untrue statement made or such alleged omission
to state a material fact included or excluded on the written direction of the
Collateral Agent. The Pledgor will bear all costs and expenses of carrying out
its obligations and the obligations of IPL hereunder.

     (c) In view of the fact that federal and state securities laws may impose
certain restrictions on the method by which a sale of the Collateral may be
effected after an Event of Default, the Pledgor agrees that upon the occurrence
and continuance of any Event of Default, the Collateral Agent may, from time to
time, attempt to sell all or any part of the Collateral by means of a private
placement, restricting the prospective purchasers to those who will represent
and agree that they are purchasing for investment only and not for
distribution. In so doing, the Collateral Agent may solicit offers to buy the
Collateral, or any part of it, for cash, from a limited number of investors who
might be interested in purchasing the Collateral. The Pledgor acknowledges and
agrees that any such private sale may result in prices and terms less favorable
than if such sale were a public sale and, notwithstanding such circumstances,
agrees that any such private sale shall be deemed to have been made in a
commercially reasonable manner. The Collateral Agent shall be under no
obligation to delay a sale of any of the Collateral for the period of time
necessary to permit IPL to register such securities for public sale under the
Securities Act, or under applicable state securities laws, even if IPL agrees
to do so.

     (d) The Pledgor further agrees to use its reasonable best efforts to do or
cause to be done all such other acts as may be necessary to make such sale or
sales of all or any portion of the Collateral pursuant to this Section 12 valid
and binding and in compliance with any and all other applicable requirements of
law; provided that the Pledgor shall not be required to seek regulatory

<PAGE>
                                      13

approval to enable the Collateral Agent to exercise or enforce its rights and
remedies hereunder until an Event of Default has occurred and is continuing
with respect to which a Default Notice has been delivered to the Collateral
Agent in accordance with Section 12(e) hereof. The Pledgor further agrees that
a breach of any of the covenants contained in this Section 12 will cause
irreparable injury to the Collateral Agent and the Secured Parties, that the
Collateral Agent and the Secured Parties have no adequate remedy at law in
respect of such breach and, as a consequence, that each and every covenant
contained in this Section 12 shall be specifically enforceable against the
Pledgor, and the Pledgor hereby waives and agrees not to assert any defenses
against an action for specific performance of such covenants except for a
defense that no default or Event of Default has occurred and is continuing
under the Indenture or the Additional Debt Documents.

     (e) The Collateral Agent shall not commence or otherwise take any action
or proceeding pursuant to this Section 12 or to realize upon any or all of the
Collateral unless and until the Majority Holders, acting through the Trustee in
the case of the Securities and through the Additional Debtholders (or, if
applicable, the Additional Secured Debt Agent) in the case of the Additional
Secured Debt, shall have notified a responsible officer of the Collateral Agent
in writing of the occurrence of an Event of Default (a "Default Notice") and
shall have directed the Collateral Agent in writing to commence to enforce this
Agreement and/or to realize upon any or all of the Collateral. Upon receipt by
the Collateral Agent of any such notice and direction, the Collateral Agent
shall (i) promptly send copies thereof to all Secured Parties and (ii) subject
to the other terms and provisions of this Agreement, seek to enforce this
Agreement and to realize upon the Collateral. After any such notice and
direction has been given, the Majority Holders shall have the right to give
written directions to the Collateral Agent as to the time, place and manner of
the taking of such actions, and the Collateral Agent shall be required to seek
to follow such directions; provided that, at the time of delivery of such
notice, the Majority Holders shall provide the Collateral Agent with a written
calculation establishing their status as the Majority Holders; provided,
further, that the Collateral Agent, prior to acting on such notice, shall
request, and may conclusively rely upon, a statement from the Trustee
confirming the amounts outstanding under the Indenture, and from the relevant
Additional Secured Debt Agent or Additional Debtholder, as applicable,
confirming the principal amount of the Additional Secured Debt outstanding,
respectively; provided, further, that in the absence of such notice and
direction, 45 days after receipt of the Default Notice, the Collateral Agent
shall have the right to take such actions as it deems necessary, advisable or
appropriate; provided, further, that each of the Secured Parties, by its
acceptance of the benefits of this Agreement, agrees that if at any time of
determination such Secured Party is a Majority Holder, such Secured Party shall
exercise its rights pursuant to this sentence in good faith for the benefit of
all of the Secured Parties; and provided further that the Majority Holders may
give written directions to the Collateral Agent to cease or materially curtail
its efforts seeking to enforce this Agreement or to cease or materially curtail
its efforts seeking to realize upon any or all of the Collateral. Upon the
receipt by a responsible officer of the Collateral Agent of any such direction
to so cease, the Collateral Agent shall be required to seek to do so, subject
to the rights of the Majority Holders on behalf of the Secured Parties to give
another written notice and direction of the type referred to above.

     (f) Notwithstanding anything to the contrary contained in this Agreement,
the rights of the Collateral Agent with respect to the Collateral, and the
obligations of IPALCO, shall be subject to the receipt of any necessary
regulatory approvals.

<PAGE>
                                      14

     SECTION 13. Intentionally Omitted.

     SECTION 14. Fees and Expenses; Indemnity. (a) The Pledgor will, upon
demand, pay to the Collateral Agent the amount of any and all reasonable fees
and expenses (including, without limitation, the reasonable fees and
disbursements of its counsel, of any investment banking firm, accountants,
business broker or other selling agent and of any other such experts and agents
retained by the Collateral Agent, including the allocated costs of inside
counsel, which compensation, expenses and disbursements shall be set forth in
sufficient written detail to the Pledgor) that the Collateral Agent may incur
in connection with (i) the preparation, execution and administration of this
Agreement, and any amendment thereto, (ii) the custody or preservation of, or
the sale of, collection from, or other realization upon, any of the Collateral,
(iii) the exercise or enforcement of any of the rights of the Collateral Agent
and the Secured Parties hereunder or (iv) the failure by the Pledgor to perform
or observe any of the provisions hereof; except any such expense, disbursement
or advance as may be found by a final and nonappealable decision of a court of
competent jurisdiction to be attributable to the Collateral Agent's gross
negligence or willful misconduct, including any and all recording and filing
fees, or stamp, excise, sales or other taxes, which may be payable or
determined to be payable with respect to any of the Collateral or in connection
with any of the transactions contemplated hereby.

     (b) The Pledgor shall fully indemnify and hold harmless each of the
Collateral Agent and each other Secured Party and their respective successors,
assigns, employees, agents, servants and representatives (including the Trustee
and any Additional Secured Debt Agent) hereunder (individually an "Indemnity",
and collectively the "Indemnitees") from and against any and all costs,
expenses, claims and liabilities of any kind or nature whatsoever incurred by
such Indemnitee, arising out of or in connection with the execution, delivery,
enforcement, performance and administration of this Agreement, including (i)
any and all recording and filing fees, or stamp, excise, sales or other taxes,
which may be payable or determined to be payable with respect to any of the
Collateral or in connection with any of the transactions contemplated hereby,
(ii) the exercise by any Indemnitee of any right or remedy granted to it
hereunder, and (iii) the costs and expenses of defending itself against any
claim or liability in connection with the exercise or performance of any of its
rights or remedies hereunder; unless such cost, expense, claim or liability
shall be found by a final and nonappealable decision of a court of competent
jurisdiction to be due to gross negligence or willful misconduct on the part of
such Indemnitee.

     SECTION 15. Interest Absolute. All rights of the Collateral Agent and the
other Secured Parties and the security interests created hereunder, and all
obligations of the Pledgor hereunder, shall be absolute and unconditional
irrespective of:

     (a) any lack of validity or enforceability of the Indenture or the
Additional Debt Documents or any other agreement or instrument relating
thereto;

     (b) any change in the time, manner or place of payment of, or in any other
term of, all or any of the Obligations, or any other amendment or waiver of or
any consent to any departure from the Indenture or the Additional Debt
Documents;

<PAGE>
                                      15

     (c) any exchange, surrender, release or non-perfection of any other
collateral, or any release or amendment or waiver of or consent to departure
from any guarantee, for all or any of the Obligations; or

     (d) any other circumstance that might otherwise constitute a defense
available to, or a discharge of, the Pledgor in respect of the Obligations or
of this Agreement other than the satisfaction in full of the Obligations.

     SECTION 16. Application of Proceeds. (a) Upon the occurrence and during
the continuance of an Event of Default with respect to which a Default Notice
has been delivered to the Collateral Agent in accordance with Section 12(e)
hereof, the proceeds of any sale of, or other realization upon, all or any part
of the Collateral and any cash held by the Collateral Agent shall be applied by
the Collateral Agent in the following order of priorities:

          first, to payment of all Obligations owing to the Collateral Agent of
     the type provided in clauses (iii) and (iv) of the definition of
     Obligations;

          second, an amount equal to the outstanding Primary Obligations (as
     defined below) of the Pledgor shall be paid to the Secured Parties as
     provided in Section 16(d), with each Secured Party receiving an amount
     equal to its outstanding Primary Obligations of the Pledgor or, if the
     proceeds are insufficient to pay in full all such Primary Obligations, its
     Pro Rata Share (as defined below) of the amount remaining to be
     distributed;

          third, an amount equal to the outstanding Remaining Obligations of
     the Pledgor shall be paid to the Secured Parties as provided in Section
     16(d), with each Secured Party receiving an amount equal to its
     outstanding Remaining Obligations of the Pledgor or, if the proceeds are
     insufficient to pay in full all such Remaining Obligations, its Pro Rata
     Share of the amount remaining to be distributed; and

          fourth, upon payment of all Remaining Obligations, to payment to the
     Pledgor or its successors or assigns, or as a court of competent
     jurisdiction may direct, of any surplus then remaining from such proceeds.

     (b) For purposes of this Agreement:

          (i) "Pro Rata Share" shall mean, when calculating a Secured Party's
     portion of any distribution or amount, that amount (expressed as a
     percentage) equal to a fraction the numerator of which is the then unpaid
     amount of such Secured Party's Primary Obligations or Remaining
     Obligations, as the case may be, of the Pledgor and the denominator of
     which is the then outstanding amount of all Principal Obligations or
     Remaining Obligations, as the case may be, of the Pledgor;

          (ii) "Primary Obligations" of the Pledgor shall mean all Obligations
     of the Pledgor secured hereby arising out of or in connection with, the
     principal of, premium, if any, and interest on (including all accrued but
     unpaid interest) all the outstanding Senior Notes and Additional Secured
     Debt at the relevant time; provided, that with respect to any such
     Obligations comprised of indebtedness issued with original issue

<PAGE>
                                      16

     discount, the amount outstanding at any time shall be the face amount of
     such indebtedness less the remaining unamortized portion of the original
     issue discount of such indebtedness at such time as determined in
     conformity with GAAP; and

          (iii) "Remaining Obligations" of the Pledgor shall mean all
     Obligations of the Pledgor secured hereby other than Primary Obligations.

     (c) When payments to Secured Parties are based upon their respective Pro
Rata Shares, the amounts received by such Secured Parties hereunder shall be
applied (for purposes of making determinations under this Section 16 only) (i)
first, to the Primary Obligations of the Pledgor and (ii) second, to the
Remaining Obligations of the Pledgor. If any payment to any Secured Party of
its Pro Rata Share of any distribution would result in overpayment to such
Secured Party, such excess amount shall instead be distributed in respect of
the unpaid Primary Obligations or Remaining Obligations, as the case may be, of
the other Secured Parties, with each Secured Party whose Primary Obligations or
Remaining Obligations, as the case may be, have not been paid in full to
receive an amount equal to such excess amount multiplied by a fraction the
numerator of which is the unpaid Primary Obligations or Remaining Obligations,
as the case may be, of such Secured Party and the denominator of which is the
unpaid Primary Obligations or Remaining Obligations, as the case may be, of all
Secured Parties entitled to such distribution.

     (d) All payments required to be made hereunder shall be made (i) if to the
Noteholders, to the Trustee and (ii) if to Additional Debtholders, to the
Additional Debtholders or, if applicable, the relevant Additional Secured Debt
Agent.

     (e) For purposes of applying payments received in accordance with this
Section 16, the Collateral Agent shall be entitled to rely upon the Secured
Parties for a written determination of the outstanding Primary Obligations and
Remaining Obligations owed to the Noteholders and the Additional Debtholders,
respectively.

     (f) It is understood and agreed that the Pledgor shall remain liable to
the extent of any deficiency between the amount of the proceeds of the
Collateral pledged by it hereunder and the aggregate amount of the Obligations
of the Pledgor.

Notwithstanding anything to the contrary in this Agreement, (i) all actions
required or permitted to be taken under this Agreement by the Noteholders shall
be so taken only by the Trustee on behalf of the Noteholders as directed by the
Noteholders, and all actions required or permitted to be taken under this
Agreement by the Additional Debtholders shall be so taken only by the
Additional Debtholders or, if applicable, the relevant Additional Secured Debt
Agent on behalf of the Additional Debtholders as directed by the Additional
Debtholders and (ii) all payments required to be made with respect to the
Senior Note Obligations shall be paid to the Trustee, and all payments required
to be made with respect to the Additional Debt Obligations under the Additional
Debt Documents shall be paid to the Additional Debtholders or, if applicable,
the relevant Additional Secured Debt Agent and the Pledgee shall be entitled
(but not required) to conclusively rely upon and act in accordance with any
instructions from the Trustee and the Additional Debtholders or, if applicable,
any relevant Additional Secured Debt Agent subject to the terms and conditions
of this Agreement and to assume that such instructions are being given

<PAGE>
                                      17

in accordance with such Indenture and the terms of the Additional Debt
Documents, respectively.

     SECTION 17. Uncertificated Securities. Notwithstanding anything to the
contrary contained herein, if any Pledged Shares (whether now owned or
hereafter acquired) are uncertificated Pledged Shares, the Pledgor shall
promptly notify the Collateral Agent, and shall promptly take all actions
required to perfect the security interest of the Collateral Agent under
applicable law. The Pledgor further agrees to take such actions as the
Collateral Agent deems necessary or desirable to effect the foregoing and to
permit the Collateral Agent to exercise any of its rights and remedies
hereunder, and agrees to provide an Opinion of Counsel reasonably satisfactory
to the Collateral Agent with respect to any such pledge of uncertificated
Pledged Shares promptly upon request of the Collateral Agent.

     SECTION 18. Miscellaneous Provisions.

     18.1 Notices. All notices, approvals, consents or other communications
required or desired to be given hereunder shall be in the form and manner as
set forth on Schedule III hereto.

     18.2 Certificate and Opinion as to Conditions Precedent. Upon any request
or application by the Pledgor to the Collateral Agent to release any
Collateral, other than Collateral released in accordance with Section 6(b), the
Pledgor shall deliver to the Collateral Agent an Officer's Certificate and/or
an Opinion of Counsel in accordance with the requirements of Sections 11.03 and
11.04 of the Indenture.

     18.3 No Adverse Interpretation of Other Agreements. This Agreement may not
be used to interpret another pledge, security or debt agreement of the Pledgor,
IPL or any subsidiary thereof. No such pledge, security or debt agreement may
be used to interpret this Agreement (other than as specifically provided
herein).

     18.4 Severability. The provisions of this Agreement are severable, and if
any clause or provision shall be held invalid or unenforceable in whole or in
part in any jurisdiction, then such invalidity or unenforceability shall affect
in that jurisdiction only such clause or provision, or part thereof, and shall
not in any manner affect such clause or provision in any other jurisdiction or
any other clause or provision of this Agreement in any jurisdiction.

     18.5 No Recourse Against Others. No director, officer, employee,
stockholder or affiliate, as such, of the Pledgor shall have any liability for
any obligations of the Pledgor under this Agreement or for any claim based on,
in respect of or by reason of such obligations or their creation. Each Secured
Party, by its acceptance of the benefits of this Agreement, waives and releases
all such liability. The waiver and release are part of the consideration for
the issue of the Senior Notes and for the grant of the security interest in the
Collateral to the Secured Parties.

     18.6 Headings. The headings of the Articles and Sections of this Agreement
have been inserted for convenience of reference only, are not to be considered
a part hereof and shall in no way modify or restrict any of the terms or
provisions hereof.

<PAGE>
                                      18

     18.7 Counterpart Originals. This Agreement may be signed in two or more
counterparts. Each signed copy shall be an original, but all of them together
represent one and the same agreement. Each counterpart may be executed and
delivered by telecopy, if such delivery is promptly followed by the original
manually signed copy sent by overnight courier.

     18.8 Benefits of Agreement. Nothing in this Agreement, express or implied,
shall give to any Person, other than the parties hereto and their successors
hereunder, and the Secured Parties, any benefit or any legal or equitable
right, remedy or claim under this Agreement.

     18.9 Amendments, Waivers and Consents. Any amendment or waiver of any
provision of this Agreement and any consent to any departure by the Pledgor
from any provision of this Agreement shall be effective only if made or given
in compliance with all of the terms and provisions of the Indenture and the
Additional Debt Documents necessary for amendments or waivers of, or consents
to any departure by the Pledgor from any provision of the Indenture or any
Additional Debt Document, as the case may be, and only if such amendment,
waiver or consent is in writing duly signed by the Pledgor and the Collateral
Agent (with the written consent of the Majority Holders, unless such consent
would not be required under the Indenture); provided, however, that any change,
waiver, modification or variance materially adversely affecting the rights and
benefits of a single Class (as defined below) of Secured Parties (and not all
Secured Parties in a like or similar manner) shall also require the written
consent of the Requisite Holders (as defined below) of such affected Class;
provided, further, that any Class shall not be considered to be affected
differently from any other Class due to the Obligations of any such other Class
being paid, repaid, refinanced, renewed or extended and the Collateral being
released, in whole or in part (whether by action of such other Class or
otherwise), as security for a particular Class. For the purpose of this
Agreement, the term "Class" shall mean, at any time, each class of Secured
Parties with outstanding Obligations secured hereby at such time, i.e., (x) the
holders of the Senior Notes secured hereby and (y) any other class of
Additional Secured Debt secured hereby; provided that, without limiting the
foregoing, it is expressly acknowledged and agreed that other creditors may be
added as "Secured Parties" hereunder (either as part of an existing Class of
creditors or as a newly created Class), and that such addition shall not
require the written consent of the Requisite Holders of the various Classes.
For the purpose of this Agreement, the term "Requisite Holders" of any Class
shall mean each of (i) with respect to the Senior Notes, the holders of at
least a majority of the outstanding principal amount of the Senior Notes and
(ii) with respect to any other class of Additional Secured Debt, the holders of
at least a majority of such class of Additional Secured Debt outstanding from
time to time.

     Failure of the Collateral Agent or any Secured Party to exercise, or delay
in exercising, any right, power or privilege hereunder shall not operate as a
waiver thereof. No single or partial exercise of any right, power or privilege
hereunder shall preclude any other or further exercise thereof or the exercise
of any other right, power or privilege. A waiver of any right or remedy
hereunder on any one occasion shall not be construed as a bar to any right or
remedy that the Collateral Agent or the Secured Parties would otherwise have on
any future occasion. The rights and remedies herein provided are cumulative,
may be exercised singly or concurrently and are not exclusive of any rights or
remedies provided by law.

<PAGE>
                                      19

     18.10 Interpretation of Agreement. Time is of the essence in each
provision of this Agreement of which time is an element. All terms not defined
herein or in the Indenture shall have the meaning set forth in the applicable
UCC, except where the context otherwise requires. To the extent a term or
provision of this Agreement conflicts with the Indenture and is not dealt with
herein with more specificity, the Indenture shall control with respect to the
subject matter of such term or provision.

     18.11 Continuing Security Interest; Transfer of Securities. This Agreement
shall create a continuing security interest in the Collateral and shall (i)
remain in full force and effect until the payment in full of all the
Obligations of the Pledgor and all the fees and expenses owing to the
Collateral Agent, (ii) be binding upon the Pledgor, its successors and assigns,
provided that the Pledgor may not assign, transfer or delegate any of its
rights or obligations under this Agreement without the prior written consent of
the Collateral Agent and (iii) inure, together with the rights and remedies of
the Collateral Agent hereunder, to the benefit of the Collateral Agent, the
Secured Parties and their respective successors, transferees and assigns.

     18.12 Reinstatement. This Agreement shall continue to be effective or be
reinstated if at any time any amount received by the Collateral Agent or any
Secured Party in respect of the Obligations is rescinded or must otherwise be
restored or returned by the Collateral Agent or any Secured Party upon the
insolvency, bankruptcy, dissolution, liquidation or reorganization of the
Pledgor or upon the appointment of any receiver, intervenor, conservator,
trustee or similar official for the Pledgor or any substantial part of its
assets, or otherwise, all as though such payments had not been made.

     18.13 Survival of Provisions. All representations, warranties and
covenants of the Pledgor contained herein shall survive the execution and
delivery of this Agreement (including the Pledgor's obligations under Section
14 hereof), and shall terminate only upon the full and final payment and
performance by the Pledgor of the Obligations of the Pledgor.

     18.14 Waivers. The Pledgor waives presentment and demand for payment of
any of the Obligations, protest and notice of dishonor or default with respect
to any of the Obligations, and all other notices to which the Pledgor might
otherwise be entitled, except as otherwise expressly provided herein or in the
Indenture.

     18.15 Authority of the Collateral Agent.

     (a) The Collateral Agent shall have and be entitled to exercise all powers
hereunder that are specifically granted to the Collateral Agent by the terms
hereof, together with such powers as are reasonably incident thereto. The
Collateral Agent may perform any of its duties hereunder or in connection with
the Collateral by or through agents or employees and shall be entitled to
retain counsel of its choice and to act in reliance upon the advice of counsel
concerning all such matters. Neither the Collateral Agent nor any director,
officer, employee, attorney or agent of the Collateral Agent shall be
responsible for the validity, effectiveness or sufficiency hereof or of any
document or security furnished pursuant hereto. The Collateral Agent and its
directors, officers, employees, attorneys and agents shall be entitled to rely
on any communication, instrument or document believed by it or them to be
genuine and correct and to have been signed or sent by the proper person or
persons. To the maximum extent permitted by

<PAGE>
                                      20

applicable law, the Pledgor waives all claims, damages, and demands against the
Collateral Agent arising out of the repossession, retention, or sale of the
Collateral pursuant to the written instruction of the Majority Holders as
provided herein, except such which may be found by a final and nonappealable
decision of a court of competent jurisdiction to arise out of the gross
negligence or willful misconduct of the Collateral Agent. Upon the occurrence
and during the continuance of an Event of Default, until the Collateral Agent
is able to effect a sale, lease, or other disposition of the Collateral, the
Collateral Agent shall have the right, subject to the receipt of any necessary
regulatory approval, to use or operate the Collateral, or any part thereof, to
the extent that it deems appropriate for the purpose of preserving the
Collateral or its value or for any other purpose deemed appropriate by the
Collateral Agent. The Collateral Agent shall have no obligation to maintain or
preserve the rights of the Pledgor as against third parties with respect to the
Collateral while the Collateral is in the possession of the Collateral Agent.
The Collateral Agent shall use reasonable care with respect to the Collateral
in its possession or under its control. The Collateral Agent shall not have any
other duty as to the Collateral in its possession or control or in the
possession or control of any agent or nominee of the Collateral Agent, or any
income thereon or as to the preservation of rights against prior parties or any
other rights pertaining thereto. Upon request of the Pledgor, the Collateral
Agent shall account for any monies received by the Collateral Agent in respect
of any foreclosure on or disposition of the Collateral. The provisions of
Sections 7.01 and 7.03of the Indenture shall apply to the Collateral Agent
under this Agreement with the same force as they apply to the Trustee under the
Indenture.

     (b) The Pledgor acknowledges that the rights and responsibilities of the
Collateral Agent under this Agreement with respect to any action taken by the
Collateral Agent or the exercise or non-exercise by the Collateral Agent of any
option, right, request, judgment or other right or remedy provided for herein
or resulting or arising out of this Agreement shall, as among the Collateral
Agent and the Secured Parties, be governed by this Agreement and by such other
agreements with respect thereto as may exist from time to time among them, but,
as between the Collateral Agent and the Pledgor, the Collateral Agent shall be
conclusively presumed to be acting as agent for the Secured Parties with full
and valid authority so to act or refrain from acting, and the Pledgor shall not
be obligated or entitled to make any inquiry respecting such authority.

     18.16 Resignation or Removal of the Collateral Agent. Until such time as
the Obligations shall have been paid in full, the Collateral Agent may at any
time, by giving written notice to the Pledgor, the Trustee and any Additional
Secured Debt Agent or Additional Debtholder, as applicable, resign and be
discharged of the responsibilities hereby created, such resignation to become
effective upon (i) the appointment of a successor Collateral Agent and (ii) the
acceptance of such appointment by such successor Collateral Agent. As promptly
as practicable after the giving of any such notice, the Majority Holders shall
appoint a successor Collateral Agent, which successor Collateral Agent shall be
reasonably acceptable to the Pledgor. If no successor Collateral Agent shall be
appointed and shall have accepted such appointment within 60 days after the
Collateral Agent gives the aforesaid notice of resignation, the Collateral
Agent may apply, at the expense of the Pledgor, to any court of competent
jurisdiction to appoint a successor Collateral Agent to act until such time, if
any, as a successor shall have been appointed as provided in this Section
18.16. Any successor so appointed by such court shall immediately and without
further act be superseded by any successor Collateral Agent

<PAGE>
                                      21

appointed by the Majority Holders as provided in this Section 18.16.
Simultaneously with its replacement as Collateral Agent hereunder, the
Collateral Agent so replaced shall deliver to its successor all documents,
instruments, certificates and other items of whatever kind (including, without
limitation, the certificates and instruments evidencing the Collateral and all
instruments of transfer or assignment) held by it pursuant to the terms hereof.
The Collateral Agent that has resigned shall be entitled to fees, costs and
expenses to the extent incurred or arising, or relating to events occurring,
before its resignation or removal.

     18.17 Pledge Agreement Supplement. In connection with the incurrence by
the Pledgor from time to time of any class of Additional Secured Debt, the
Pledgor agrees to enter into a Pledge Agreement Supplement, which shall form a
part of this Agreement, and shall by its terms cause such Additional Debt
Obligations to be secured by a security interest in the Collateral on an equal
and ratable basis with the Obligations secured hereunder. Upon the
effectiveness of any Pledge Agreement Supplement, Schedule I hereto shall be
deemed to be amended to include such Additional Secured Debt identified in such
Pledge Agreement Supplement.

     18.18 Termination of Agreement. Subject to the provisions of Section 18.12
hereof, this Agreement shall terminate upon full and final payment and
performance of the Obligations of the Pledgor (and upon receipt by the
Collateral Agent of the Pledgor's written certification that all such
Obligations have been satisfied). At such time, the Collateral Agent shall, at
the request of the Pledgor, reassign and redeliver to the Pledgor all of the
Collateral hereunder that has not been sold, disposed of, retained or applied
by the Collateral Agent in accordance with the terms hereof. Such reassignment
and redeliver shall be without warranty by or recourse to the Collateral Agent,
except as to the absence of any prior assignments by the Collateral Agent of
its interest in the Collateral and except to the extent of any breach by the
Collateral Agent of its obligations hereunder (including, without limitation,
its obligations under Section 10), and shall be at the expense of the Pledgor.

     18.19 Final Expression. This Agreement, together with any other agreement
executed in connection herewith, is intended by the parties as a final
expression of their Agreement and is intended as a complete and exclusive
statement of the terms and conditions thereof.

     18.20 GOVERNING LAW; SUBMISSION TO JURISDICTION; WAIVER OF JURY TRIAL;
WAIVER OF DAMAGES.

     (a) THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK.

     (b) THE PLEDGOR AGREES THAT THE COLLATERAL AGENT SHALL, IN ITS OWN NAME OR
IN THE NAME AND ON BEHALF OF ANY SECURED PARTY, HAVE THE RIGHT, TO THE EXTENT
PERMITTED BY APPLICABLE LAW, TO PROCEED AGAINST THE PLEDGOR OR THE PLEDGOR'S
PROPERTY IN A COURT IN ANY LOCATION REASONABLY SELECTED IN GOOD FAITH TO ENABLE
THE COLLATERAL AGENT TO REALIZE ON SUCH PROPERTY, OR TO ENFORCE A JUDGMENT OR
OTHER COURT ORDER ENTERED IN FAVOR OF THE COLLATERAL

<PAGE>
                                      22

AGENT. THE PLEDGOR AGREES THAT IT WILL NOT ASSERT ANY PERMISSIVE COUNTERCLAIMS
IN ANY PROCEEDING BROUGHT BY THE COLLATERAL AGENT TO REALIZE ON SUCH PROPERTY,
OR TO ENFORCE A JUDGMENT OR OTHER COURT ORDER IN FAVOR OF THE COLLATERAL AGENT.
THE PLEDGOR WAIVES ANY OBJECTION THAT IT MAY HAVE TO THE LOCATION OF THE COURT
IN WHICH THE COLLATERAL AGENT HAS COMMENCED A PROCEEDING DESCRIBED IN THIS
PARAGRAPH INCLUDING, WITHOUT LIMITATION, ANY OBJECTION TO THE LAYING OF VENUE
OR BASED ON THE GROUNDS OF FORUM NON CONVENIENS.

     (c) THE PLEDGOR AGREES THAT SERVICE OF PROCESS IN ANY SUCH ACTION OR
PROCEEDING MAY BE EFFECTED BY MAILING A COPY THEREOF BY REGISTERED OR CERTIFIED
MAIL (OR ANY SUBSTANTIALLY SIMILAR FORM OF MAIL), POSTAGE PREPAID, TO THE
PLEDGOR AT ITS ADDRESS REFERRED TO IN SECTION 18.1 OR AT SUCH OTHER ADDRESS OF
WHICH THE COLLATERAL AGENT SHALL HAVE BEEN NOTIFIED PURSUANT THERETO. THE
PLEDGOR AGREES THAT NOTHING HEREIN SHALL AFFECT THE RIGHT TO EFFECT SERVICE OF
PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR SHALL LIMIT THE RIGHT TO SUE IN
ANY OTHER JURISDICTION.

     (d) THE PLEDGOR, THE COLLATERAL AGENT AND THE SECURED PARTIES WAIVE ANY
RIGHT TO HAVE A JURY PARTICIPATE IN RESOLVING ANY DISPUTE, WHETHER SOUNDING IN
CONTRACT, TORT, OR OTHERWISE ARISING OUT OF, CONNECTED WITH, RELATED TO OR
INCIDENTAL TO THE RELATIONSHIP ESTABLISHED BETWEEN THEM IN CONNECTION WITH THIS
AGREEMENT. INSTEAD, ANY DISPUTES RESOLVED IN COURT WILL BE RESOLVED IN A BENCH
TRIAL WITHOUT A JURY.

     (e) THE PLEDGOR HEREBY AGREES THAT NEITHER THE COLLATERAL AGENT NOR ANY
SECURED PARTY SHALL HAVE ANY LIABILITY TO THE PLEDGOR (WHETHER SOUNDING IN
TORT, CONTRACT OR OTHERWISE) FOR LOSSES SUFFERED BY THE PLEDGOR IN CONNECTION
WITH, ARISING OUT OF, OR IN ANY WAY RELATED TO, THE TRANSACTIONS CONTEMPLATED
AND THE RELATIONSHIP ESTABLISHED BY THIS AGREEMENT, OR ANY ACT, OMISSION OR
EVENT OCCURRING IN CONNECTION THEREWITH, UNLESS IT IS DETERMINED BY A FINAL AND
NONAPPEALABLE JUDGMENT OF A COURT THAT IS BINDING ON THE COLLATERAL AGENT OR
SUCH SECURED PARTY, AS THE CASE MAY BE, THAT SUCH LOSSES WERE THE RESULT OF
ACTS OR OMISSIONS ON THE PART OF THE COLLATERAL AGENT OR SUCH SECURED PARTY, AS
THE CASE MAY BE, CONSTITUTING GROSS NEGLIGENCE OR WILLFUL MISCONDUCT.

     (f) THE PLEDGOR WAIVES ALL RIGHTS OF NOTICE AND HEARING OF ANY KIND PRIOR
TO THE EXERCISE BY THE COLLATERAL AGENT OR ANY HOLDER OF ITS RIGHTS DURING THE
CONTINUANCE OF A DEFAULT OR AN EVENT OF DEFAULT TO REPOSSESS THE COLLATERAL
WITH JUDICIAL PROCESS OR TO REPLEVY, ATTACH OR LEVY UPON THE COLLATERAL OR
OTHER SECURITY FOR THE OBLIGATIONS. THE PLEDGOR WAIVES THE POSTING OF ANY

<PAGE>
                                      23

BOND OTHERWISE REQUIRED OF THE COLLATERAL AGENT OR ANY SECURED PARTY IN
CONNECTION WITH ANY JUDICIAL PROCESS OR PROCEEDING TO OBTAIN POSSESSION OF,
REPLEVY, ATTACH OR LEVY UPON COLLATERAL OR OTHER SECURITY FOR THE OBLIGATIONS,
TO ENFORCE ANY JUDGMENT OR OTHER COURT ORDER ENTERED IN FAVOR OF THE COLLATERAL
AGENT OR ANY SECURED PARTY, OR TO ENFORCE BY SPECIFIC PERFORMANCE, TEMPORARY
RESTRAINING ORDER OR PRELIMINARY OR PERMANENT INJUNCTION THIS AGREEMENT OR ANY
OTHER AGREEMENT OR DOCUMENT AMONG THE PLEDGOR, THE COLLATERAL AGENT AND THE
SECURED PARTIES. THE PLEDGOR WAIVES, TO THE MAXIMUM EXTENT NOT PROHIBITED BY
LAW, ANY RIGHT IT MAY HAVE TO CLAIM OR RECOVER IN ANY LEGAL ACTION OR
PROCEEDING ANY SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES.

     18.21 Acknowledgments. The Pledgor hereby acknowledges that it has been
advised by counsel in the negotiation, execution and delivery of this
Agreement.

<PAGE>

     IN WITNESS WHEREOF, the Pledgor and the Collateral Agent have each caused
this Agreement to be duly executed and delivered as of the date first above
written.

                                              IPALCO ENTERPRISES, INC.

                                              By:  /s/ Leonard Lee
                                                  ------------------------------
                                                  Name:  Leonard Lee
                                                  Title: Chief Executive Officer

                                              BANK ONE, NATIONAL ASSOCIATION, as
                                              Collateral Agent

                                              By:  /s/ Jason Fry
                                                  ------------------------------
                                                  Name:  Jason Fry
                                                  Title: Authorized Officer

Accepted and acknowledged as of
the date first above written:

BANK ONE, NATIONAL ASSOCIATION,
  not in its individual capacity, but
  solely as Trustee under the Indenture

By: /s/ Jason Fry
    -----------------------------------
    Name:  Jason Fry
    Title: Authorized Officer

<PAGE>

                                   SCHEDULE I

                            ADDITIONAL SECURED DEBT

Title or Name of Secured
Additional Secured Debt:      Additional Debt Holders:    Additional Debt Agent:
-------------------------     ------------------------    ----------------------
       [NONE]

<PAGE>

                                  SCHEDULE II

                             PLEDGED SHARES OF IPL

                                                             Percent of Class of
 Stock    Stock Certificate Number     Number of Shares      Shares Outstanding
------    ------------------------     ----------------      ------------------
common               1                    17,206,630                100%

<PAGE>

                                  SCHEDULE III

If to Pledgor:

     IPALCO Enterprises, Inc.
     One Monument Circle
     Indianapolis, Indiana  46204
     Attn:  Director, Financial Services

If to the Collateral Agent or the Trustee:

     Bank One, National Association
     111 Monument Circle
     Indianapolis, Indiana 46204
     Attn:  ________________

If to any Additional Secured Debt Agent:

     See Schedule I hereto

<PAGE>

                                                                         ANNEX A

                     [Form of Pledge Agreement Supplement]

     PLEDGE AGREEMENT SUPPLEMENT dated ______________,____, (this "Supplement")
made by IPALCO Enterprises, Inc., an Indiana corporation (the "Pledgor"), in
favor of Bank One, National Association, a [_________] banking corporation, as
collateral agent (in such capacity, the "Collateral Agent") for the benefit of
the Secured Parties (as defined in the Pledge Agreement referred to below).

     1. This Supplement is executed and delivered pursuant to the terms of the
Pledge Agreement, dated as of November 14, 2001 (as supplemented by this
Supplement and as the same has been and may hereafter be supplemented by any
other Pledge Agreement Supplement or otherwise amended or modified, the "Pledge
Agreement"), made by the Pledgor in favor of the Collateral Agent for the
benefit of the Collateral Agent and the Secured Parties. Terms defined in the
Pledge Agreement are used herein with their defined meanings.

     2. Pursuant to the terms of the Indenture and the Pledge Agreement, the
Pledgor may incur additional secured indebtedness from time to time that is by
its terms equally and ratably secured under the Pledge Agreement with the
Obligations secured thereunder. The Pledgor and [Additional Secured Debt
Agent/Additional Secured Party], have entered into that certain [name of
additional debt agreement], dated as of ___________, ____, pursuant to which
the Pledgor shall [insert description of additional debt]. The terms of the
[additional debt agreement] require that the Pledgor equally and ratably secure
its obligations under [such additional debt] with the Obligations secured under
the Pledge Agreement. The Pledgor hereby acknowledges and agrees that its
obligations under [such additional debt] shall be deemed to be "Additional Debt
Obligations" pursuant to the Pledge Agreement.

     3. The Pledgor confirms and reaffirms the security interest in the
Collateral granted to the Collateral Agent, for the benefit of the Collateral
Agent and the Secured Parties under the Pledge Agreement; and hereby
acknowledges and agrees that all references to "Secured Parties" in the Pledge
Agreement shall be deemed to include all holders of the Additional Secured Debt
as described on Schedule 1 hereto.

     4. The Pledgor hereby represents and warrants that the representations and
warranties contained in Section 4 of the Pledge Agreement are true and correct
on the date of this Supplement with all references therein and elsewhere in the
Pledge Agreement to "Additional Secured Debt", "Additional Debtholders" and, if
applicable, "Additional Secured Debt Agent" to include the Additional Debt,
Additional Debtholders and, if applicable, Additional Secured Debt Agent as
listed on Schedule 1 hereto and on Schedule 1 to each Pledge Agreement
Supplement executed prior to the date hereof and with references therein to
"this Pledge Agreement" to mean the Pledge Agreement as supplemented hereby. In
addition, the Pledgor represents and warrants that this Supplement has been
duly executed and delivered by the Pledgor and constitutes a legal, valid and
binding obligation of the Pledgor enforceable against the Pledgor in accordance
with its terms, except as may be limited by applicable bankruptcy, insolvency,
reorganization,

<PAGE>
                                      A-2

fraudulent conveyance, moratorium or similar laws affecting the
enforcement of creditors' rights and remedies generally and by equitable
principles of general applicability.

     5. The Additional Debtholders designated on Schedule 1 hereto, by their
acceptance of the benefits of the Pledge Agreement, hereby irrevocably
designate the Collateral Agent to act on their behalf as specified in the
Pledge Agreement. Each such Additional Debtholder hereby irrevocably
authorizes, and each holder of the Additional Debt Obligations by the
acceptance of such Additional Debt Obligation and by the acceptance of the
benefits of the Pledge Agreement shall be deemed irrevocably to authorize the
Collateral Agent to take such action on its behalf under the Pledge Agreement
and instruments and agreements referred to therein and to exercise such powers
and to perform such duties thereunder as are specifically delegated or required
of the Collateral Agent by the terms thereof and such other powers as are
reasonably incident thereto.

     6. This Supplement is supplemental to the Pledge Agreement, forms a part
thereof and is subject to all the terms thereof. Schedule I to the Pledge
Agreement does, and shall be deemed to, include each item listed on Schedule 1
hereto, and each such item shall be and is included within the meaning of the
terms "Additional Secured Debt", "Additional Debtholders" and, if applicable,
"Additional Secured Debt Agent" as such terms are used in the Pledge Agreement.

     IN WITNESS WHEREOF, the Pledgor has caused this Supplement to be duly
executed and delivered on the date first set forth above.

                                            IPALCO ENTERPRISES, INC.

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

Acknowledged and agreed:

BANK ONE, NATIONAL ASSOCIATION,
as Collateral Agent

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

[Additional Secured Debt Agent] [Additional Debtholder]

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

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