Document:

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                                                                EXHIBIT 10(a)(4)

                                                                  EXECUTION COPY

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                    U.S.$200,000,000 364-DAY CREDIT AGREEMENT

                                      AMONG

                           UTILICORP AUSTRALIA, INC.,
                                  AS BORROWER,

              THE SEVERAL LENDERS FROM TIME TO TIME PARTIES HERETO,

                                       AND

                           CREDIT SUISSE FIRST BOSTON,
                    ACTING THROUGH ITS CAYMAN ISLANDS BRANCH,
                            AS ADMINISTRATIVE AGENT,
                       LEAD ARRANGER AND SOLE BOOK RUNNER

                           DATED AS OF APRIL 9, 2003

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                                TABLE OF CONTENTS

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ARTICLE 1.  DEFINITIONS...............................................................................1

  1.1      Defined Terms..............................................................................1
  1.2      Other Definitional Provisions.............................................................18

ARTICLE 2.  AMOUNT AND TERMS OF COMMITMENTS..........................................................19

  2.1      Term Loans................................................................................19
  2.2      Repayment of Loans; Evidence of Debt......................................................20
  2.3      Procedure for Borrowing...................................................................21
  2.4      Fees......................................................................................21
  2.5      Optional and Mandatory Prepayments........................................................22
  2.6      Interest Rate Conversion and Continuation Options.........................................24
  2.7      Maximum Amounts of Eurodollar Tranches....................................................25
  2.8      Interest Rates; Default Rate Payment Dates................................................25
  2.9      Computation of Interest...................................................................26
  2.10     Inability to Determine Interest Rate......................................................26
  2.11     Pro Rata Treatment and Payments; Funding Reliance.........................................27
  2.12     Illegality................................................................................28
  2.13     Requirements of Law.......................................................................28
  2.14     Taxes.....................................................................................29
  2.15     Indemnity.................................................................................31
  2.16     Discretion of Lender as to Manner of Funding..............................................32
  2.17     Change of Lending Office; Replacement Lender..............................................32
  2.18     Collateral................................................................................33

ARTICLE 3.  REPRESENTATIONS AND WARRANTIES...........................................................34

  3.1      Financial Condition.......................................................................34
  3.2      No Change.................................................................................35
  3.3      Corporate Existence; Compliance with Law..................................................35
  3.4      Corporate Power; Authorization; Enforceable Obligations...................................35
  3.5      No Legal Bar..............................................................................35
  3.6      No Material Litigation....................................................................36
  3.7      No Default................................................................................36
  3.8      Ownership of Property; Liens..............................................................36
  3.9      Subsidiaries..............................................................................36
  3.10     Intellectual Property.....................................................................36
  3.11     Taxes.....................................................................................36
  3.12     Margin Stock..............................................................................37
  3.13     ERISA.....................................................................................37
  3.14     Holding Company; Investment Company Act; Other Regulations................................37
  3.15     Purpose of Loans..........................................................................38
  3.16     Environmental Matters.....................................................................38
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  3.17     Insurance.................................................................................38
  3.18     Accuracy and Completeness of Information..................................................38
  3.19     Leaseholds, Permits, etc..................................................................38
  3.20     No Restrictive Covenants..................................................................39
  3.21     Repayment of Third Party Indebtedness by UAPL.............................................39

ARTICLE 4.  CONDITIONS PRECEDENT.....................................................................39

  4.1      Conditions to Closing Date................................................................39
  4.2      Conditions to Tranche B Loans.............................................................42

ARTICLE 5.  AFFIRMATIVE COVENANTS....................................................................43

  5.1      Financial Statements......................................................................43
  5.2      Certificates; Other Information...........................................................43
  5.3      Payment and Performance of Obligations....................................................44
  5.4      Maintenance of Existence..................................................................44
  5.5      Maintenance of Property; Insurance........................................................44
  5.6      Inspection of Property; Books and Records; Discussions....................................44
  5.7      Notices...................................................................................45
  5.8      Environmental Laws........................................................................45
  5.9      ERISA.....................................................................................46
  5.10     Use of Proceeds...........................................................................46
  5.11     Margin Stock..............................................................................46
  5.12     Collateral Documents......................................................................46
  5.13     Sale of Australian Assets.................................................................46

ARTICLE 6.  NEGATIVE COVENANTS.......................................................................47

  6.1      Collateral Asset Coverage.................................................................47
  6.2      Limitation on Fundamental Changes.........................................................47
  6.3      Limitation on Transactions with Affiliates................................................48
  6.4      Limitation on Liens.......................................................................48
  6.5      Amendments of Organizational Documents....................................................48
  6.6      Limitation on Guarantee Obligations.......................................................48
  6.7      Limitation on Sale of Assets..............................................................48
  6.8      Limitation on Investments, Loans and Advances.............................................49
  6.9      Limitation on Dividends and Stock Repurchases.............................................49
  6.10     Limitation on Indebtedness or Mandatory Redeemable Stock..................................50
  6.11     Limitation on Sales and Leasebacks........................................................50
  6.12     Payment and Other Restrictions............................................................50
  6.13     Limitation on Businesses..................................................................50
  6.14     Limitation on Certain Amendments..........................................................51
  6.15     Limitations on Subsidiaries' Equity Interests.............................................51
  6.16     Hedging Arrangements; Forward Sale or Purchase Contracts..................................51
  6.17     Voting....................................................................................52
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ARTICLE 7.  EVENTS OF DEFAULT........................................................................52

  7.1      Events of Default.........................................................................52

ARTICLE 8.  THE AGENTS...............................................................................55

  8.1      Appointment...............................................................................55
  8.2      Delegation of Duties......................................................................55
  8.3      Exculpatory Provisions....................................................................55
  8.4      Reliance by Agents........................................................................56
  8.5      Notice of Default.........................................................................56
  8.6      Non-Reliance on Agents and Other Lenders..................................................56
  8.7      Indemnification...........................................................................57
  8.8      Agent in Its Individual Capacity..........................................................57
  8.9      Successor Administrative Agent............................................................58

ARTICLE 9.  MISCELLANEOUS............................................................................58

  9.1      Amendments and Waivers....................................................................58
  9.2      Notice....................................................................................59
  9.3      No Waiver; Cumulative Remedies............................................................59
  9.4      Survival of Representations and Warranties................................................60
  9.5      Payment of Expenses and Taxes; Indemnification............................................60
  9.6      Successors and Assigns; Participations and Assignments....................................61
  9.7      Adjustments; Setoff.......................................................................65
  9.8      Confidentiality...........................................................................65
  9.9      Effectiveness.............................................................................66
  9.10     Counterparts..............................................................................66
  9.11     Severability..............................................................................66
  9.12     Integration...............................................................................66
  9.13     GOVERNING LAW.............................................................................67
  9.14     Submission To Jurisdiction; Waivers.......................................................67
  9.15     Acknowledgments...........................................................................67
  9.16     Waivers of Jury Trial.....................................................................68
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               EXHIBITS AND SCHEDULES

Exhibit A-1    Form of Notice of Borrowing
Exhibit A-2    Form of Notice of Interest Rate Conversion
Exhibit B      Form of Closing Certificate
Exhibit C      Form of Assignment and Assumption Agreement
Exhibit D      Form of Note
Exhibit E      Form of Global Tranche A/Tranche B Note

Schedule I     Commitments and Lending Offices of Lenders
Schedule 3.9   Subsidiaries

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          CREDIT AGREEMENT, dated as of April 9, 2003, among UTILICORP
AUSTRALIA, INC., a Delaware corporation (the "BORROWER"), the several banks and
other financial institutions from time to time party hereto (the "LENDERS") and
CREDIT SUISSE FIRST BOSTON, acting through its Cayman Islands Branch, as
Administrative Agent (in such capacity the "ADMINISTRATIVE AGENT"), Lead
Arranger and Sole Book Runner.

                             PRELIMINARY STATEMENTS

          1.    The Borrower has requested the Lenders extend credit to the
Borrower in the form of term loans in an aggregate principal amount not in
excess of $200,000,000. The proceeds of the Loans are to be used by the
Borrower, first, to pre-fund up to 12 months interest expense with respect to
such loans and, thereafter, to provide working capital and for other general
corporate purposes of the Borrower.

          2.    In consideration of the foregoing premises and the mutual
covenants herein contained and for other good and valuable consideration the
receipt and sufficiency of which are hereby acknowledged, the parties hereto,
intending to be legally bound, hereby agree as follows:

                             ARTICLE 1. DEFINITIONS

          1.1   DEFINED TERMS. As used in this Agreement, the following terms
shall have the following meanings:

          "ADMINISTRATIVE AGENT" shall have the meaning ascribed thereto in the
heading hereto and shall include such other Lender or financial institution as
shall have subsequently been appointed as the successor Administrative Agent
pursuant to SECTION 8.9.

          "AFFECTED LENDER" shall have the meaning ascribed thereto in
SECTION 2.17.

          "AFFILIATE" shall mean, as to any Person, any other Person which,
directly or indirectly, is in control of (including all directors and officers
of such Person), is controlled by, or is under common control with, such Person.
For purposes of this definition, "control" of a Person shall mean the power,
directly or indirectly, to direct or cause the direction of the management and
policies of such Person, whether by ownership of voting securities, by contract
or otherwise.

          "AGENTS" shall have the meaning ascribed thereto in SECTION 8.1.

          "AGREEMENT" shall mean this Credit Agreement, as amended, supplemented
or otherwise modified from time to time.

          "ALTERNATE BASE RATE" shall mean, on any particular date, a rate of
interest per annum equal to the highest of

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     (a)  the rate of interest most recently announced by CSFB as its prime rate
          in effect at its principal office in New York City (which rate is not
          necessarily intended to be the lowest rate of interest charged by CSFB
          in connection with extensions of credit);

     (b)  the Federal Funds Rate for such date plus 0.50%; and

     (c)  4.00%.

          "ALTERNATE BASE RATE LOANS" shall mean Loans the rate of interest
applicable to which is based upon the Alternate Base Rate.

          "ANCFC" shall mean Aquila Networks Canada Finance Corporation, a
unlimited company organized under the laws of the Province of Nova Scotia.

          "ANCFC GUARANTY" shall mean a guaranty made by ANCFC, as Guarantor, in
favor of the Collateral Agent for the benefit of the Secured Parties in support
of ANCMC Canadian Pledge Agreement, in form and substance satisfactory to the
Lenders and the Collateral Agent.

          "ANCL CREDIT FACILITY" shall mean that certain Credit Agreement, dated
as of May 31, 2001, among Aquila Canada Ltd., as Borrower, Bank of America
Canada, Bank of Montreal, Deutsche Bank AG, Canada Branch, Royal Bank of Canada,
The Toronto-Dominion Bank and the financial institutions who become parties
thereto from time to time, as Lenders, The Toronto-Dominion Bank, as
Administration Agent, and Bank of Montreal, as Syndication Agent.

          "ANCMC" shall mean Aquila Networks Canada Management Corporation, a
corporation organized under the laws of the Province of Alberta.

          "ANCMC CANADIAN PLEDGE AGREEMENT" shall mean a pledge agreement
between ANCFC and the Collateral Agent for the benefit of the Secured Parties
(as defined therein) pursuant to which, among other things, ANCFC pledges to the
Collateral Agent all of the outstanding Capital Stock of ANCMC, in form and
substance satisfactory to the Lenders and the Collateral Agent.

          "APPROVED FUND" shall mean, with respect to any Lender that is a fund
or commingled investment vehicle that invests in commercial loans, any other
fund that invests in commercial loans and is managed or advised by the same
investment advisor as such Lender or by an Affiliate of such investment advisor.

          "AQUILA" shall mean Aquila, Inc., a Delaware corporation and the
parent of the Borrower.

          "AQUILA MERCHANT SERVICES" shall mean Aquila Merchant Services, Inc.,
a Delaware corporation and a Wholly-Owned Subsidiary of Aquila.

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          "AQUILA PIATT COUNTY POWER" shall mean Aquila Piatt County Power,
L.L.C., a Delaware limited liability company and a Wholly-Owned Subsidiary of
Aquila.

          "AQUILA PIATT COUNTY POWER GUARANTY" shall mean a guaranty made by
Aquila Piatt County Power, as Guarantor, in favor of the Collateral Agent for
the benefit of the Secured Parties pursuant to which, among other things, Aquila
Piatt County Power guarantees all Obligations to the Lenders and the other
Secured Parties (and is otherwise acceptable to the Collateral Agent).

          "AQUILA PIATT COUNTY POWER PLEDGE AGREEMENT" shall mean the Aquila
Piatt County Power Membership Pledge Agreement between Aquila Power Holdings,
Inc. and the Collateral Agent for the benefit of the Secured Parties pursuant to
which, among other things, Aquila Power Holdings, Inc. pledges to the Collateral
Agent all of the outstanding Capital Stock of Aquila Piatt County Power, in form
and substance satisfactory to the Lenders and the Collateral Agent.

          "ARRANGER" shall mean CSFB and its successors.

          "ASSIGNEE" shall have the meaning ascribed thereto in SECTION 9.6(c).

          "ASSIGNMENT AND ASSUMPTION AGREEMENT" shall have the meaning ascribed
thereto in Section 9.6(c).

          "AUSTRALIAN ASSETS" shall mean assets of the Borrower's Subsidiaries
including, without limitation, Investments held by any Subsidiary in WA Gas
Holdings Pty Ltd., Power Partnership Pty Ltd., or Energy Partnership Holdings
Pty Ltd.

          "AVAILABILITY PERIOD" shall mean the period from the Closing Date
through May 12, 2003.

          "BENEFITED LENDER" shall have the meaning ascribed thereto in SECTION
9.7(a).

          "BORROWER" shall have the meaning ascribed thereto in the heading
hereto.

          "BUSINESS DAY" shall mean a day other than a Saturday, Sunday or other
day on which commercial banks in New York City are authorized or required by law
to close; PROVIDED, HOWEVER, that, when used in connection with a Eurodollar
Loan, the term "BUSINESS DAY" shall also exclude any day on which banks are not
open for dealings in Dollars in the interbank market in London, England.

          "CANADIAN COLLATERAL EVENT" shall have the meaning ascribed thereto in
the $430 Million Credit Agreement.

          "CANADIAN PARENTS" shall mean Missouri Public Service Company, a
Missouri corporation and a Wholly-Owned Subsidiary of Aquila, and Aquila
Networks Canada Corp., an Alberta corporation and a Wholly-Owned Subsidiary of
Aquila.

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          "CANADIAN PLEDGE AGREEMENT" shall mean a pledge agreement among Aquila
and Aquila Canada Holdings, Inc., a Delaware corporation and an indirect
Wholly-Owned Subsidiary of Aquila, as pledgors, and the Collateral Agent for the
benefit of the Secured Parties (as defined therein), as pledgee, pursuant to
which, among other things, the pledgors pledge to the Collateral Agent all of
the outstanding Capital Stock of the Canadian Parents, in form and substance
satisfactory to the Lenders and the Collateral Agent.

          "CAPITAL EXPENDITURES" of any Person shall mean, for any period,
without duplication, all expenditures (whether paid in cash or other
consideration) during such period that, in accordance with GAAP, are or should
be capitalized on such Person's financial statements.

          "CAPITAL STOCK" shall mean any and all shares, interests,
participations or other equivalents (however designated) of capital stock of a
corporation, any and all equivalent ownership interests in a Person (other than
a corporation) and any and all warrants or options to purchase any of the
foregoing.

          "CASH EQUIVALENTS" shall mean (a) securities with maturities of one
year or less from the date of acquisition issued or fully guaranteed or insured
by the United States Government or any agency thereof, (b) certificates of
deposit and eurodollar time deposits with maturities of one year or less from
the date of acquisition and overnight bank deposits of any Lender and
certificates of deposit with maturities of one year or less from the date of
acquisition and overnight bank deposits of any other commercial bank having
capital and surplus in excess of $500,000,000, (c) commercial paper of any
issuer rated at least A-2 by Standard & Poor's or P-2 by Moody's, (d) additional
money market investments with maturities of one year or less from the date of
acquisition rated at least A1 or AA by Standard & Poor's or P-1 or Aa by Moody's
and (e) tax-exempt debt obligations of any State of the United States or of any
county or other municipal government subdivision of any State of the United
States with maturities of one year or less from the date of acquisition rated at
the highest investment grade rating by Standard & Poor's or by Moody's, or
publicly traded or open-end bond funds that invest exclusively in such
tax-exempt debt obligations.

          "CITIBANK 364-DAY REVOLVING CREDIT AGREEMENT" shall mean the
U.S.$325,000,000 364-Day Revolving Credit Agreement dated as of April 12, 2002
among the Borrower, the lenders party thereto and Citibank, N.A., as agent.

          "CITIBANK 3-YEAR REVOLVING CREDIT AGREEMENT" shall mean that certain
U.S.$325,000,000 3-Year Revolving Credit Agreement dated as of April 12, 2002
among the Borrower, the lenders party thereto, Citibank, N.A., as agent, and
Bank One, NA, as LC Issuing Bank.

          "CHANGE IN TAX LAW" shall have the meaning ascribed thereto in SECTION
2.14(a).

          "CHANGE OF CONTROL" shall mean the occurrence of any of the following:

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          (a)   any Person or "GROUP" (within the meaning of SECTION 13(d) or
14(d) of the Securities Exchange Act of 1934) (i) shall have acquired beneficial
ownership of 40% or more of the aggregate outstanding classes of Capital Stock
having voting power in the election of directors of Aquila or (ii) shall obtain
the power (whether or not exercised) to elect a majority of Aquila's directors;

          (b)   a majority of the persons who comprise the Board of Directors of
Aquila on the date hereof shall be replaced, unless such replacement (i) was
either recommended by at a majority of the Board of Directors of Aquila then
still in office who either were members of such Board of Directors on the date
hereof or whose election as a member of such Board of Directors was previously
so approved or (ii) the replacing persons have been appointed by such Board of
Directors;

          (c)   Aquila shall be liquidated or dissolved; or

          (d)   the Borrower shall cease to be a Wholly-Owned Subsidiary of
Aquila.

          "CLAY COUNTY SYNTHETIC LEASE" shall mean the lease financing of the
Raccoon Creek 334 MW Peaking Power Plant in Clay County, Illinois, entered into
pursuant to the Second Amended and Restated Participation Agreement, dated as of
August 31, 2001, among MEP Flora Power, Aquila Merchant Services, Clay County
Purchaser, L.L.C., Clay County Trust 2000, Wilmington Trust Company, not in its
individual capacity but solely as Trustee of the Clay County Trust 2000, the
financial institutions named as Tranche A Lenders in the Participation
Agreement, the financial institutions named as Tranche B Lenders in the
Participation Agreement, the financial institutions named as Certificate Holders
in the Participation Agreement, Credit Lyonnais New York Branch, as
Administrative Agent and Sole Lead Arranger, and Credit Lyonnais New York
Branch, as Swap Party.

          "CLOSING DATE" shall mean the date on which the conditions precedent
set forth in SECTION 4.1 shall be satisfied or waived by the Required Lenders.

          "CODE" shall mean the Internal Revenue Code of 1986, as amended from
time to time.

          "COLLATERAL" shall have the meaning ascribed thereto in the Collateral
Documents.

          "COLLATERAL ACCOUNT" shall mean a collateral account established
pursuant to the Collateral Account Agreement.

          "COLLATERAL ACCOUNT AGREEMENT" shall mean a collateral account
agreement between the Borrower and the Collateral Agent with respect to the
Pre-Funded Interest.

          "COLLATERAL AGENT" shall mean CSFB, acting through its Cayman Islands
Branch, as collateral agent under the Collateral Documents.

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          "COLLATERAL DOCUMENTS" shall mean a collective reference to the Aquila
Piatt County Power Guaranty, the MEP Flora Power Guaranty, the Aquila Piatt
County Power Pledge Agreement, the ANCMC Canadian Pledge Agreement, the Canadian
Pledge Agreement, the Collateral Account Agreement, the IPP Pledge Agreement,
the MEP Flora Power Pledge Agreement, and the Specified Company Pledge Agreement
(to the extent such documents have not been terminated in accordance with the
terms hereof and thereof) and such other documents executed and delivered in
connection with the attachment and perfection of the Collateral Agent's security
interest and liens arising thereunder, including, without limitation, UCC
financing statements filed in connection therewith.

          "COMMITMENTS" shall mean the aggregate amount of Tranche A Commitments
and Tranche B Commitments.

          "COMMITMENT LETTER" shall mean the Commitment Letter, dated March 21,
2003, between Aquila and the Arranger.

          "COMMITMENT PERCENTAGE" shall mean, as to any Lender at any time, the
percentage which such Lender's Commitment then constitutes of the aggregate
Commitments (or, at any time after the Closing Date, the percentage which the
aggregate principal amount of such Lender's Loans then outstanding and Tranche B
Commitment constitutes of the aggregate principal amount of the Loans then
outstanding and Tranche B Commitment).

          "COMMONLY CONTROLLED ENTITY" shall mean an entity, whether or not
incorporated, which is under common control with the Borrower or any Subsidiary
within the meaning of Section 4001(a)(14) of ERISA or is part of a group which
includes the Borrower and which is treated as a single employer under Section
414 of the Code.

          "COMPLIANCE CERTIFICATE" shall have the meaning ascribed thereto in
SECTION 5.2(b).

          "CONFIDENTIAL INFORMATION" shall have the meaning ascribed thereto in
SECTION 9.8.

          "CONTRACTUAL OBLIGATION" shall mean as to the Borrower or any
Subsidiary, any provision of any security issued by the Borrower or any
Subsidiary or of any agreement, instrument or other undertaking to which the
Borrower or any Subsidiary is a party or by which it or any of its property is
bound.

          "CREDIT PARTY" shall mean, collectively, (i) the Borrower, (ii) so
long as the Lien of the ANCMC Canadian Pledge Agreement remains in effect in
accordance with the terms hereof and thereof, ANCFC, (iii) so long as the Aquila
Piatt County Power Guaranty remains in effect in accordance with the terms
hereof and thereof, Aquila Piatt County Power, (iv) so long as either the Aquila
Piatt County Power Pledge Agreement or the MEP Flora Power Pledge Agreement
remains in effect in accordance with the terms hereof and thereof, Aquila Power
Holdings, Inc., (v) so long as the Lien of the Canadian Pledge Agreement remains
in effect in accordance with the terms hereof and thereof,

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Aquila and Aquila Canada Holdings, Inc., (vi) so long as the Lien of the IPP
Pledge Agreement remains in effect in accordance with the terms hereof and
thereof, Aquila Merchant Services, and (vii) so long as the MEP Flora Power
Guaranty remains in effect in accordance with the terms hereof and thereof, MEP
Flora Power.

          "CSFB" shall mean Credit Suisse First Boston.

          "DEBT" shall mean, with respect to any Person, the aggregate principal
amount of all obligations that, in accordance with GAAP consistently applied and
without duplication, would be classified as debt on its balance sheet; PROVIDED,
HOWEVER, that with respect to Aquila and Aquila Merchant Services, "DEBT" shall
(i) exclude the principal amount of all obligations relating to the gas prepay
contracts to which Aquila or Aquila Merchant Services has, as of the date
hereof, signed, co-signed or guaranteed, and (ii) exclude obligations to the
extent that such obligations are cash collaterized.

          "DEFAULT" shall mean any of the events specified in SECTION 7.1,
whether or not any requirement for the giving of notice, the lapse of time, or
both, has been satisfied.

          "DISPOSITION" shall mean any conveyance, sale, lease, assignment,
transfer or other disposition (including any such transaction effected by way of
merger or consolidation).

          "DOLLARS" and "$" shall mean dollars in lawful currency of the United
States of America.

          "DOMESTIC LENDING OFFICE" shall mean, initially, the office of each
Lender designated as such in SCHEDULE I (or the office of an Assignee designated
pursuant to an Assignment and Assumption Agreement), and thereafter, such other
office of such Lender, if any, which shall be making or maintaining Alternate
Base Rate Loans as may be designated from time to time by notice from such
Lender to the Borrower and the Administrative Agent.

          "ENVIRONMENTAL LAWS" shall mean any and all foreign, Federal, state,
local or municipal laws, rules, orders, regulations, statutes, ordinances,
codes, decrees, judgments, permits, licenses, registrations or authorizations or
requirements of any Governmental Authority or other Requirements of Law
(including common law) regulating, relating to or imposing liability or
standards of conduct concerning the health and safety of humans and other living
organisms as it relates to exposures to Materials of Environmental Concern,
protection of natural resources or the environment, including the manufacture,
distribution in commerce, and use of, or Release to the environment of,
Materials of Environmental Concern, as now or may at any time hereafter be in
effect.

          "ENVIRONMENTAL LIABILITY" means any liability, contingent or otherwise
(including any liability for damages, costs of environmental remediation, fines,
penalties or indemnities), of the Borrower or any Subsidiary directly or
indirectly resulting from or based upon (a) violation of any Environmental Law,
(b) the generation, use, handling, transportation, storage, treatment or
disposal of any Materials of Environmental Concern, (c) exposure to any
Materials of Environmental Concern, (d) the release or threatened

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release of any Materials of Environmental Concern into the environment or (e)
any contract, agreement or other consensual arrangement pursuant to which
liability is assumed or imposed with respect to any of the foregoing.

          "ERISA" shall mean the Employee Retirement Income Security Act of
1974, as amended from time to time.

          "EURODOLLAR BASE RATE" shall mean, with respect to any Eurodollar Loan
for any Interest Period, the rate per annum determined by the Administrative
Agent at approximately 11:00 a.m. (London time) on the date which is two (2)
Business Days prior to the beginning of such Interest Period by reference to the
British Bankers' Association Interest Settlement Rates for deposits in Dollars
(as set forth by any service selected by the Administrative Agent which has been
nominated by the British Bankers' Association as an authorized information
vendor for the purpose of displaying such rates) for a period equal to such
Interest Period; PROVIDED that, to the extent that an interest rate is not
ascertainable pursuant to the foregoing provisions of this definition, the
"EURODOLLAR BASE RATE" shall be the interest rate per annum determined by the
Administrative Agent to be the average of the rates per annum at which deposits
in Dollars are offered for such Interest Period to major banks in the London
interbank market in London, England by the Administrative Agent at approximately
11:00 a.m. (London time) on the date which is two (2) Business Days prior to the
beginning of such Interest Period; PROVIDED, FURTHER, that if the Eurodollar
Base Rate determined as provided above with respect to any Loan for any Interest
Period would be less than 3.00% per annum, then the "EURODOLLAR BASE RATE" with
respect to such Loan for such Interest Period shall be deemed to be 3.00% per
annum.

          "EURODOLLAR LOANS" shall mean Loans the rate of interest applicable to
which is based upon the Eurodollar Rate.

          "EURODOLLAR OFFICE" shall mean, initially, the office of each Lender
designated as such in SCHEDULE I (or the office of an Assignee designated
pursuant to an Assignment and Assumption Agreement), and thereafter, such other
office of such Lender, if any, which shall be making or maintaining Eurodollar
Loans as may be designated from time to time by notice from such Lender to the
Borrower and the Administrative Agent.

          "EURODOLLAR RATE" shall mean with respect to each day during each
Interest Period pertaining to a Eurodollar Loan, a rate per annum determined for
such day in accordance with the following formula:

                    Eurodollar Base Rate
          --------------------------------------
          1.00 - Eurodollar Reserve Requirements

          "EURODOLLAR RESERVE REQUIREMENTS" shall mean, for any day as applied
to a Eurodollar Loan, the aggregate (without duplication) of the rates
(expressed as a decimal) of reserve requirements in effect on such day
(including, without limitation, basic, supplemental, marginal and emergency
reserves) under any regulations of the Board of

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Governors of the Federal Reserve System or other Governmental Authority having
jurisdiction with respect thereto) dealing with reserve requirements prescribed
for eurocurrency funding (currently referred to as "EUROCURRENCY LIABILITIES" in
Regulation D of such Board) maintained by a member bank of such System.

          "EURODOLLAR TRANCHE" shall mean all Loans which consist of Eurodollar
Loans incurred on the Closing Date (or which result from continuations or
conversions on a given date after the Closing Date) and have the same Interest
Period.

          "EVENT OF DEFAULT" shall mean any of the events specified in SECTION
7.1; provided that any requirement for the giving of notice, the lapse of time,
or both, has been satisfied.

          "EXISTING CREDIT AGREEMENTS" shall mean, collectively, (i) the
Citibank 364-Day Revolving Credit Agreement, and (ii) the Citibank 3-Year
Revolving Credit Agreement.

          "FEDERAL FUNDS RATE" shall mean for any particular date, the rate per
annum (rounded upwards, if necessary, to the nearest 1/100 of 1%) equal to the
weighted average of the rates on overnight Federal funds transactions with
members of the Federal Reserve System arranged by Federal funds brokers on such
day, as published by the Federal Reserve Bank of New York on the Business Day
next succeeding such day; provided that (a) if such day is not a Business Day,
the Federal Funds Rate for such day shall be such rate on such transactions on
the next preceding Business Day as so published on the next succeeding Business
Day, and (b) if no such rate is so published on such next succeeding Business
Day, the Federal Funds Rate for such day shall be the average rate charged to
the Administrative Agent (in its individual capacity) on such day on such
transactions as determined by the Administrative Agent.

          "FINANCING LEASE" shall mean any lease of property, real or personal,
the obligations of the lessee in respect of which are required in accordance
with GAAP to be capitalized on a balance sheet of the lessee.

          "$430 MILLION CREDIT AGREEMENT" shall mean that certain
U.S.$430,000,000 Credit Agreement dated as of the date hereof among Aquila, as
borrower, the lenders party thereto, the issuing banks party thereto and CSFB,
as administrative agent.

          "GAAP" shall mean generally accepted accounting principles in the
United States of America as in effect from time to time consistent with those
utilized in preparing the audited financial statements referred to in
SECTION 3.1; provided that in the event that any change in accounting principles
required by the promulgation of any rule, regulation, pronouncement or opinion
by the Financial Accounting Standards Board of the American Institute of
Certified Public Accountants (or successor thereto or any agency with similar
functions) or the United States Securities and Exchange Commision results in a
change in the method of calculation of any of the financial covenants hereunder,
the Lenders (acting through the Administrative Agent) and the Borrower will

                                        9
<Page>

in good faith enter into negotiations in order to reevaluate such financial
covenants in light of such change; and PROVIDED, FURTHER, that this provision
shall not operate as a waiver of any right, remedy, power or privilege available
to any Lender under any provision of any Loan Document or pursuant to any
applicable law.

          "GOVERNMENTAL AUTHORITY" shall mean any national government (United
States or foreign), any state or other political subdivision thereof, any entity
exercising executive, legislative, judicial, regulatory or administrative
functions of or pertaining to government and any agency, authority,
instrumentality, or regulatory body of any thereof.

          "GOOSE CREEK" shall mean a 510 MW peaking power plant located in Piatt
County, Illinois and originally financed by Aquila Piatt County Power pursuant
to the Piatt County Synthetic Lease.

          "GRANTING LENDER" shall have the meaning ascribed thereto in SECTION
9.6(f).

          "GUARANTEE OBLIGATION" shall mean as to any Person (the "GUARANTEEING
PERSON"), any obligation of the guaranteeing person (including, without
limitation, any reimbursement, counter-indemnity or similar obligation),
guaranteeing or in effect guaranteeing any Indebtedness, lease, dividend or
other similar obligation (the "PRIMARY OBLIGATION") of any other third Person
(the "PRIMARY OBLIGOR") in any manner, whether directly or indirectly,
including, without limitation, any obligation of the guaranteeing person,
whether or not contingent, (i) to purchase any such primary obligation or any
property constituting direct or indirect security therefor, (ii) to advance or
supply funds (x) for the purchase or payment of any such primary obligation or
(y) to maintain working capital or equity capital of the primary obligor or
otherwise to maintain the net worth, liquidity or solvency of the primary
obligor, (iii) to purchase property, securities or services primarily for the
purpose of assuring the owner of any such primary obligation of the ability of
the primary obligor to make payment of such primary obligation or (iv) otherwise
to assure or hold harmless the owner of any such primary obligation against loss
in respect thereof; provided that the term Guarantee Obligation shall not
include endorsements of instruments for deposit or collection in the ordinary
course of business.

          "GUARANTEES" shall mean the MEP Flora Power Guaranty and the Aquila
Piatt County Power Guaranty.

          "GUARANTORS" shall mean Aquila Piatt County Power and MEP Flora Power.

          "INDEBTEDNESS" of any Person at any date shall mean, without
duplication, (a) all obligations of such Person for borrowed money, (b) all
obligations of such Person evidenced by bonds, debentures, notes or similar
instruments, (c) all Financing Lease obligations of such Person, (d) all
obligations of such Person under synthetic leases, tax retention operating
leases, off-balance sheet loans or other off-balance sheet financing products
that, for tax purposes, are considered indebtedness for borrowed money of the

                                       10
<Page>

lessee but are classified as operating leases under GAAP, (e) all indebtedness
of such Person for the deferred purchase price of property or services (other
than current trade liabilities incurred in the ordinary course of business), (f)
all outstanding reimbursement obligations of such Person in respect of
outstanding letters of credit, acceptances and similar obligations issued or
created for the account of such Person, (g) all liabilities secured by any Lien
on any property owned by such Person even though such Person has not assumed or
otherwise become liable for the payment thereof, and (h) all Guarantee
Obligations of such Person; PROVIDED, HOWEVER, that with respect to Aquila and
Aquila Merchant Services, "INDEBTEDNESS" shall exclude (i) the principal amount
of all obligations relating to the gas prepay contracts to which Aquila or
Aquila Merchant Services has, as of the date hereof, signed, co-signed or
guaranteed, and (ii) liabilities or other obligations to the extent cash
collaterized.

          "INDEPENDENT POWER PROJECTS" shall mean, collectively, Koma Kulhan
Associates, Topsham Hydroelectric Generating Facility Trust No. 2, Badger Creek
Limited, L.P., Stockton Cogen Company, Orlando CoGen Limited, L.P., BAF Energy
LP, Jamaica Private Power Company Limited, Rumford Cogeneration Company L.P.,
Lake Cogen, LTD., Mid-Georgia Cogen, L.P., Pasco Cogen, LTD., Onondaga
Cogeneration Limited Partnership, Selkirk Cogen Partners, L.P., and Prime Energy
Limited Partnership.

          "INSOLVENCY" shall mean with respect to any Multiemployer Plan, the
condition that such plan is insolvent within the meaning of Section 4245 of
ERISA.

          "INSOLVENT" shall mean pertaining to a condition of Insolvency.

          "INTELLECTUAL PROPERTY" shall have the meaning ascribed thereto in
SECTION 3.10.

          "INTEREST PAYMENT DATE" shall mean (a) as to any Alternate Base Rate
Loan, the last Business Day of each March, June, September and December to occur
while such Loan is outstanding, (b) as to any Eurodollar Loan having an Interest
Period of three months or less, the last day of such Interest Period, and (c) as
to any Eurodollar Loan having an Interest Period longer than three months, each
day which is three months after the first day of such Interest Period and the
last day of such Interest Period.

          "INTEREST PERIOD" with respect to any Eurodollar Loan shall mean:

          (a)   initially, the period commencing on the borrowing or conversion
date, as the case may be, with respect to such Eurodollar Loan and ending one,
two, three or six months thereafter, as selected by the Borrower in its Notice
of Borrowing or Notice of Interest Rate Conversion, as the case may be, given
with respect thereto; and

          (b)   thereafter, each period commencing on the last day of the next
preceding Interest Period applicable to such Eurodollar Loan and ending one,
two, three or six months thereafter, as selected by the Borrower by irrevocable
notice to the Administrative Agent not less than three Business Days prior to
the last day of the then current Interest Period with respect thereto;

                                       11
<Page>

PROVIDED that, the foregoing provisions relating to Interest Periods are subject
to the following:

                (i)     if any Interest Period pertaining to a Eurodollar Loan
          would otherwise end on a day that is not a Business Day, such Interest
          Period shall be extended to the next succeeding Business Day (and,
          with respect to payments of principal and interest thereon, shall be
          payable at the then applicable rate during such extension) unless the
          result of such extension would be to carry such Interest Period into
          another calendar month in which event such Interest Period shall end
          on the immediately preceding Business Day;

                (ii)    no Interest Period shall be selected which would extend
          beyond the Maturity Date; and

                (iii)   any Interest Period pertaining to a Eurodollar Loan
          that begins on the last Business Day of a calendar month (or on a day
          for which there is no numerically corresponding day in the calendar
          month at the end of such Interest Period) shall end on the last
          Business Day of a calendar month.

          "INVESTMENT" shall have the meaning ascribed thereto in SECTION 6.8.

          "IPP PLEDGE AGREEMENT" shall mean a pledge agreement between the
Aquila Merchant Services and the Collateral Agent for the benefit of the Secured
Parties (as defined therein) pursuant to which, among other things, Aquila
Merchant Services pledges to the Collateral Agent all of the outstanding Capital
Stock of UtilCo Group, in form and substance satisfactory to the Lenders and the
Collateral Agent.

          "LC OUTSTANDINGS" shall have meaning ascribed thereto in the Citibank
3-Year Revolving Credit Agreement.

          "LENDER" shall have the meaning ascribed thereto in the heading
hereto.

          "LIEN" shall mean any mortgage, pledge, hypothecation, assignment,
deposit arrangement, encumbrance, lien (statutory or other), charge or other
security interest or any preference, priority or other security agreement or
preferential arrangement of any kind or nature whatsoever (including, without
limitation, any conditional sale or other title retention agreement and any
Financing Lease having substantially the same economic effect as any of the
foregoing).

          "LOAN DOCUMENTS" shall mean collectively, this Agreement, the
Collateral Documents, the Notes and each other agreement, instrument or
certificate (other than an Assignment and Assumption Agreement, pursuant to
which the assignor therein sells and/or assigns an interest under this
Agreement) issued, executed and delivered to the Administrative Agent, the
Collateral Agent or the Lenders hereunder or thereunder or pursuant hereto or
thereto (in each case as the same may be amended, restated,

                                       12
<Page>

supplemented, extended, renewed or replaced from time to time), and "LOAN
DOCUMENT" means any one of them.

          "LOANS" shall mean the Tranche A Loans and Tranche B Loans made by the
Lenders to the Borrower by the subscription of Notes issued by the Borrower
pursuant to SECTION 2.1, PROVIDED that until and unless borrowing of the Tranche
B Loan shall occur as provided herein such term shall mean "TRANCHE A LOANS".

          "MANDATORY REDEEMABLE STOCK" shall mean, with respect to any Person,
any share of such Person's Capital Stock, to the extent that it is (a)
redeemable, payable or required to be purchased or otherwise retired or
extinguished, or convertible into any Indebtedness or other liability,
obligation, covenant or duty of or binding upon, or any term or condition to be
observed by or binding upon such Person or any of its assets, (i) at a fixed or
determinable date, whether by operation of a sinking fund or otherwise, (ii) at
the option of any other Person or (iii) upon the occurrence of a condition not
solely within the control of such Person such as a redemption required to be
made utilizing future earnings, or (b) convertible into Capital Stock which has
the features set forth in clause (a).

          "MATERIAL ADVERSE EFFECT" shall mean any material adverse effect (a)
on the business, operations, property, condition (financial or otherwise) or
prospects of the Borrower and its Subsidiaries (taken as a whole), (b) on the
Collateral (taken as a whole), (c) that is reasonably likely to affect the
legality, validity or enforceability of this Agreement, any of the other Loan
Documents, or the rights or remedies of the Administrative Agent, the Collateral
Agent, or the Lenders hereunder or thereunder, or (d) that is reasonably likely
to affect the perfection, priority or enforceability of the Lien of any other
Collateral Document.

          "MATERIALS OF ENVIRONMENTAL CONCERN" shall mean any gasoline or
petroleum (including crude oil or any fraction thereof) or petroleum products or
any other pollutant, contaminant, hazardous substance, hazardous waste, special
waste, toxic substance, radioactive material, or other compound, element,
material or substance in any form whatsoever (including products) regulated,
restricted or addressed by or under any Environmental Law, including, without
limitation, asbestos, polychlorinated biphenyls and urea-formaldehyde
insulation.

          "MATURITY DATE" shall mean April 8, 2004.

          "MEP FLORA POWER" shall mean MEP Flora Power, LLC, a Delaware limited
liability company and a Wholly-Owned Subsidiary of Aquila.

          "MEP FLORA POWER GUARANTY" shall mean a guaranty made by MEP Flora
Power, as Guarantor, in favor of the Collateral Agent for the benefit of the
Secured Parties pursuant to which, among other things, MEP Flora Power
guarantees all Obligations to the Lenders and the other Secured Parties (and is
otherwise acceptable to the Collateral Agent).

                                       13
<Page>

          "MEP FLORA POWER PLEDGE AGREEMENT" shall mean the MEP Flora Power
Membership Pledge Agreement between Aquila Power Holdings, Inc. and the
Collateral Agent for the benefit of the Secured Parties pursuant to which, among
other things, Aquila Power Holdings, Inc. pledges to the Collateral Agent all of
the outstanding Capital Stock of MEP Flora Power, in form and substance
satisfactory to the Lenders and the Collateral Agent.

          "MOODY'S" shall mean Moody's Investors Service, Inc.

          "MULTIEMPLOYER PLAN" shall mean a plan which is a "MULTIEMPLOYER PLAN"
as defined in Section 3(37) or 4001(a)(3) of ERISA.

          "NET CASH PROCEEDS" shall mean, with respect to any Reduction Event,
an amount equal to the cash proceeds from or in respect of such Reduction Event
(including any cash received by way of deferred payment pursuant to a promissory
note, receivable or otherwise, but only as and when received), less (a) any
investment banking, auditing and legal fees, printing costs, rating agency fees
and any other fees and expenses reasonably incurred by such Person in respect of
such Reduction Event, (b) if such Reduction Event is a Disposition of assets,
the amount of any contractually required payments, including Debt, and
associated costs which become due and owing as a result of such Disposition, and
(c) any taxes actually paid or to be payable by such Person (as estimated by a
senior financial or accounting officer of the Borrower) in respect of such
Reduction Event.

          "NON-EXCLUDED TAXES" shall have the meaning ascribed thereto in
SECTION 2.14(a).

          "NOTE" shall mean any promissory note issued by the Borrower in
accordance with SECTION 2.2(e) or (f).

          "NOTICE OF BORROWING" shall mean a notice given by the Borrower
pursuant to SECTION 2.3.

          "NOTICE OF INTEREST RATE CONVERSION" shall have the meaning ascribed
thereto in SECTION 2.6(a).

          "OBLIGATIONS" shall mean the unpaid principal of and interest
(including, without limitation, interest accruing after the maturity of the
Loans and interest accruing after the filing of any petition in bankruptcy, or
the commencement of any insolvency, reorganization or like proceeding, relating
to the Borrower, whether or not a claim for post-filing or post-petition
interest is allowed in such proceeding and whether the Administrative Agent, for
the benefit of the Lenders, is oversecured or undersecured with respect to such
Loans) on the Loans and all other obligations and liabilities of the Borrower to
the Administrative Agent, the Collateral Agent and the Lenders, whether direct
or indirect, absolute or contingent, due or to become due, now existing or
hereafter incurred, which may arise under, out of, or in connection with, this
Agreement, the other Loan Documents or any other document made, delivered or
given in connection herewith or therewith, whether on account of principal,
interest, fees, indemnities, costs, expenses

                                       14
<Page>

(including, without limitation, all fees and disbursements of counsel to the
Administrative Agent, the Collateral Agent or the Lenders that are required to
be paid by the Borrower pursuant to the terms of this Agreement or any other
Loan Document) or otherwise.

          "PARTICIPANT" shall have the meaning ascribed thereto in
SECTION 9.6(b).

          "PERMITTED LIENS" shall mean

          (a)   Liens for taxes, assessments, governmental charges or levies not
                yet due or which are being contested in good faith by
                appropriate proceedings; PROVIDED that adequate reserves with
                respect thereto are maintained on the books of the Borrower or
                its Subsidiaries, as the case may be, in conformity with GAAP;

          (b)   any attachment or judgment Lien not constituting an Event of
                Default under SECTION 7.1(h);

          (c)   any Lien vested in any licensor or permitter for obligations or
                acts to be performed, the performance of which obligations or
                acts is required under licenses or permits, so long as the
                performance of such obligations or acts is not delinquent or is
                being contested in good faith and by appropriate proceedings;

          (d)   the Lien of any Collateral Document;

          (e)   other Liens not securing Indebtedness existing on the date
                hereof; and

          (f)   any Lien incurred pursuant to any agreement relating to a
                Disposition of assets so long as the terms of such Disposition
                comply with SECTION 6.7 (and such Lien extends solely over the
                assets which are the subject of such Disposition).

          "PERSON" shall mean an individual, partnership, corporation, limited
liability company, business trust, joint stock company, trust, unincorporated
association, joint venture, Governmental Authority, or other entity of whatever
nature.

          "PIATT COUNTY SYNTHETIC LEASE" shall mean the lease financing of the
Goose Creek power plant entered into pursuant to the Amended and Restated
Participation Agreement, dated as of May 16, 2002, among Aquila Piatt County
Power, Piatt County Purchaser, L.L.C., Piatt Midwest Statutory Trust II, State
Street Bank and Trust Company of Connecticut, National Association, not in its
individual capacity, except as expressly set forth therein, but solely as
Trustee, the Persons named therein as Note Holders, the Persons named therein as
Certificate Holders, Citibank, N.A., as Swap Party, and Citicorp USA, Inc., as
Agent.

                                       15
<Page>

          "PLAN" shall mean at a particular time, any employee benefit plan
which is defined in Section 3(2) of ERISA and in respect of which the Borrower
or any Subsidiary is, an "EMPLOYER" as defined in Section 3(5) of ERISA.

          "PRE-FUNDED INTEREST" shall mean an amount equal to interest to accrue
on the outstanding principal amount of the Loans hereunder from the date such
Loans are made to the Maturity Date (based upon an assumed interest rate which,
in the judgment of the Administrative Agent, approximates the average projected
interest rate with respect to the Loans hereunder).

          "RACOON CREEK" shall mean a 334 MW peaking power plant located in Clay
County, Illinois and leased by MEP Flora Power pursuant to the Clay County
Synthetic Lease.

          "REDUCTION EVENT" shall have the meaning ascribed thereto in SECTION
2.5(b).

          "REGISTER" shall have the meaning ascribed thereto in SECTION 9.6(d).

          "REGULATION D, T, U OR X" shall mean Regulation D, T, U or X,
respectively, of the Board of Governors of the Federal Reserve System as in
effect from time to time, or any successor regulation.

          "RELEASE" shall mean any release, pumping, pouring, emptying,
injecting, escaping, leaching, migrating, dumping, seepage, spill, leak, flow,
discharge, disposal or emission.

          "REORGANIZATION" shall mean with respect to any Multiemployer Plan,
the condition that such plan is in reorganization within the meaning of Section
4241 of ERISA.

          "REPLACEMENT LENDER" shall have the meaning ascribed thereto in
SECTION 2.17(d).

          "REQUIRED LENDERS" shall mean, at any time, Lenders having Commitments
(or after the Closing Date, Loans) representing more than 50% of the aggregate
of all Commitments (or after the Closing Date, Loans) outstanding at such time.

          "REQUIREMENT OF LAW" as to any Person shall mean the articles of
organization and by-laws or other organizational or governing documents of such
Person, and any law, treaty, rule or regulation or determination of an
arbitrator or a court or other Governmental Authority, in each case, applicable
to or binding upon such Person or any of its property or to which such Person or
any of its property is subject.

          "RESPONSIBLE OFFICER" shall mean, with respect to a Person, the
chairman of the board of directors, the chief executive officer, the president,
any senior vice president, or any vice president of such Person or, with respect
to financial matters, the

                                       16
<Page>

chief financial officer or the treasurer of such Person, or any other officer of
such Person designated as a Responsible Officer by any of the foregoing.

          "SECURED PARTIES" shall mean the Administrative Agent, the Collateral
Agent and the Lenders.

          "SENIOR NOTES" shall mean 7.00% senior notes of Aquila maturing on
July 15, 2004 and 6.875% senior notes of Aquila maturing on October 1, 2004.

          "SPC" shall have the meaning ascribed thereto in SECTION 9.6(f).

          "SPECIFIED COMPANY" shall have the meaning ascribed thereto in the
Specified Company Pledge Agreement.

          "SPECIFIED ENTITIES" shall mean the Specified Company and its
Subsidiaries.

          "SPECIFIED COMPANY PLEDGE AGREEMENT" shall mean a pledge agreement
between the Borrower and the Collateral Agent for the benefit of the Secured
Parties pursuant to which, among other things, the Borrower pledges to the
Collateral Agent all of the outstanding Capital Stock of the Specified Company,
in form and substance satisfactory to the Lenders and the Collateral Agent.

          "STANDARD & POOR'S" shall mean Standard & Poor's Rating Group, a
division of The McGraw-Hill Companies, Inc.

          "SUBSIDIARY" shall mean, with respect to any Person, any corporation
or unincorporated entity of which more than 50% of the outstanding capital stock
(or comparable interest) having ordinary voting power (irrespective of whether
at the time capital stock (or comparable interest) of any other class or classes
of such corporation or entity shall or might have voting power upon the
occurrence of any contingency) is at the time directly or indirectly owned by
such Person (whether directly or through one or more other subsidiaries). In the
case of an unincorporated entity, a Person shall be deemed to have more than 50%
of interests having ordinary voting power only if such Person's vote in respect
of such interests comprises more than 50% of the total voting power of all such
interests in the unincorporated entity. Unless otherwise expressly stated
herein, all references to any Subsidiary are to direct or indirect Subsidiaries
of the Borrower.

          "TRANCHE A COMMITMENT" shall mean, as to any Lender, the obligation of
such Lender to make a Tranche A Loan to the Borrower an aggregate principal
amount not to exceed the amount set forth opposite such Lender's name on
SCHEDULE I. The aggregate amount of the Tranche A Commitments is $100,000,000.

          "TRANCHE B COMMITMENT" shall mean, as to any Lender, the obligation of
such Lender to make a Tranche B Loan to the Borrower an aggregate principal
amount not to exceed the amount set forth opposite such Lender's name on
SCHEDULE I. The aggregate amount of the Tranche B Commitments is $100,000,000.
The unused portion

                                       17
<Page>

of Tranche B Commitment shall terminate on the earliest of (x) the date of
borrowing of the Tranche B Loans pursuant to SECTION 2.3, (y) termination by the
Borrower of such unused portion, and (z) expiration of the Availability Period.

          "TRANCHE A LOAN" shall have the meaning ascribed thereto in
SECTION 2.1.

          "TRANCHE B LOAN" shall have the meaning ascribed thereto in
SECTION 2.1.

          "TRANSACTIONS" shall mean, collectively, (a) the execution, delivery
and performance by the Borrower of this Agreement and the other Loan Documents,
(b) the issuing of Notes and the borrowings hereunder and the use of the
proceeds thereof, (c) the granting of security interests pursuant to the
Collateral Documents and (d) any other transactions related or entered into in
connection with any of the foregoing or otherwise in connection with any of the
Loan Documents.

          "TRANSFEREE" shall have the meaning ascribed thereto in
SECTION 9.6(g).

          "TURBINE WAREHOUSE SYNTHETIC LEASE" shall mean the $265,000,000 lease
financing pursuant to the Participation Agreement, dated May 17, 2001, among
Aquila Turbines, L.L.C., Piatt Midwest Statutory Trust, State Street Bank and
Trust Company of Connecticut, National Association, not in its individual
capacity, except as expressly set forth therein, but solely as Trustee, the
Persons named therein as Note Holders, the Persons named therein as Certificate
Holders, and Citibank, N.A., as Agent and Lessor Agent.

          "TYPE" shall mean as to any Loan, its nature as an Alternate Base Rate
Loan or a Eurodollar Loan, as the context may require.

          "UAPL" shall mean UtiliCorp Asia Pacific Pty Ltd., an Australian
company and a Wholly-Owned Subsidiary of the Borrower.

          "UTILCO GROUP" shall mean UtilCo Group, Inc., a Delaware corporation
and a Wholly-Owned Subsidiary of Aquila and intermediate holding company of the
equity or other ownership interests in the Independent Power Projects.

          "WAIVER AND CONSENT" shall mean a Waiver and Consent among the
Borrower and the lenders party thereto under the Citibank 3-Year Revolving
Credit Agreement, pursuant to which, among other things, such lenders waive
obligations of the Borrower to comply with certain covenants under the Citibank
3-Year Revolving Credit Agreement, in form and substance satisfactory to the
Administrative Agent.

          "WHOLLY-OWNED SUBSIDIARY" of any Person shall mean any Subsidiary 100%
of whose Capital Stock (other than qualifying directors' shares) is at the time
owned by such Person directly or indirectly through other Wholly Owned
Subsidiaries.

          1.2   OTHER DEFINITIONAL PROVISIONS. (a) Unless otherwise specified
therein, all terms defined in this Agreement shall have their respective defined
meanings

                                       18
<Page>

when used in the Notes or any certificate or other document made or delivered
pursuant hereto.

                (b)     As used herein, in the Notes and in any certificate or
     other document made or delivered pursuant hereto, accounting terms relating
     to the Borrower or any Subsidiary not defined in SECTION 1.1 and accounting
     terms partly defined in SECTION 1.1, to the extent not defined, shall have
     the respective meanings given to them under GAAP.

                (c)     The words "hereof," "herein" and "hereunder" and words
     of similar import when used in this Agreement shall refer to this Agreement
     as a whole and not to any particular provision of this Agreement, and
     Article, Section, Schedule and Exhibit references are to this Agreement
     unless otherwise specified.

                (d)     The meanings given to terms defined herein shall be
     equally applicable to both the singular and plural forms of such terms.

                (e)     The words "include," "includes" and "including" shall be
     deemed to be followed by the phrase "without limitation". The word "or"
     shall not be exclusive. The word "will" shall be construed to have the same
     meaning and effect as the word "shall". In the computation of periods of
     time from a specified date to a later specified date, the word "from" shall
     mean "from and including"; the words "to" and "until" shall mean "to but
     excluding"; and the word "through" shall mean "to and including".

                (f)     Unless the context requires otherwise (i) any definition
     of or reference to any agreement, instrument or other document herein shall
     be construed as referring to such agreement, instrument or other document
     as from time to time amended, supplemented or otherwise modified (subject
     to any restrictions on such amendments, supplements or modifications set
     forth herein), (ii) any reference herein to any Person shall be construed
     to include such Person's successors and assigns, and (iii) the words
     "asset" and "property" shall be construed to have the same meaning and
     effect and to refer to any and all tangible and intangible assets and
     properties, including cash, securities, accounts and contract rights.

                   ARTICLE 2. AMOUNT AND TERMS OF COMMITMENTS

          2.1   TERM LOANS. Subject to the terms and conditions hereof
(including, without limitation, the conditions precedent set forth in
SECTION 4.1 hereof), each Lender severally agrees to make a term loan to the
Borrower in a principal amount not to exceed such Lender's Tranche A Commitment
Percentage of $100,000,000 ("TRANCHE A LOAN") on the Closing Date by the
subscription of Notes issued by the Borrower in accordance with Article 2.
Subject to the terms and conditions hereof (including, without limitation, the
conditions precedent set forth in SECTION 4.2 hereof), each Lender severally
agrees to make a term loan to the Borrower in a principal amount

                                       19
<Page>

not to exceed such Lender's Tranche B Commitment Percentage of $100,000,000
("TRANCHE B LOAN") during the Availability Period by the subscription of Notes
issued by the Borrower in accordance with Article 2. Tranche B Loans shall be
allocated among the Lenders pro rata to their Tranche A Loans. Both Tranche A
Loan and Tranche B Loan shall be made by the Borrower issuing Notes in
accordance with Article 2 in a single issue. The Loans (i) at the option of the
Borrower may be incurred and maintained as, or converted into, Alternate Base
Rate Loans or Eurodollar Loans in accordance with the provisions hereof and (ii)
shall be repaid or prepaid in accordance with the provisions hereof, but once
repaid or prepaid, may not be reborrowed.

          2.2   REPAYMENT OF LOANS; EVIDENCE OF DEBT. (a) The Borrower hereby
     unconditionally promises to pay to the Administrative Agent for the account
     of each Lender the then unpaid principal amount of each Loan on the
     Maturity Date.

                (b)     Each Lender shall maintain in accordance with its usual
     in addition to the Notes practice an account or accounts evidencing the
     Indebtedness of the Borrower to such Lender resulting from each Loan made
     by such Lender, including the date and the amounts of principal and
     interest payable and paid to such Lender from time to time hereunder.

                (c)     The Administrative Agent shall maintain accounts in
     which it shall record (i) the date and the amount of each Loan made
     hereunder, the Type thereof and the Interest Period applicable thereto,
     (ii) the amount of any principal or interest due and payable or to become
     due and payable from the Borrower to each Lender hereunder and (iii) the
     amount of any sum received by the Administrative Agent hereunder for the
     account of the Lenders and each Lender's share thereof.

                (d)     The entries made in the accounts maintained pursuant to
     paragraph (b) or (c) of this Section shall be prima facie evidence of the
     existence and amounts of the obligations recorded therein; PROVIDED that
     the failure of any Lender or the Administrative Agent to maintain such
     accounts or any error therein shall not in any manner affect the obligation
     of the Borrower to repay the Loans in accordance with the terms of this
     Agreement.

                (e)     Any Lender may request that Loans made by it be made by
     subscription of promissory notes in respect of the Tranche A Loan and the
     Tranche B Loan. In such event, the Borrower shall prepare, execute and
     deliver to such Lender promissory notes payable to the order of such Lender
     (or, if requested by such Lender, to such Lender and its registered
     assigns) and in substantially the form of Exhibit D. Thereafter, the Loans
     evidenced by such promissory notes and interest thereon shall at all times
     (including after assignment pursuant to SECTION 9.6) be represented by one
     or more promissory notes in such form payable to the order of the payee
     named therein (or, if such promissory note is a registered note, to such
     payee and its registered assigns). Such promissory notes should be in
     substitution for the Notes issued pursuant to Section 2.2(f).

                                       20
<Page>

                (f)     The Borrower must prepare, execute and deliver to the
     Administrative Agent a promissory note with respect to the aggregate amount
     of the Tranche A Loans and a separate promissory note with respect to the
     aggregate amount of the Tranche B Loans, if any, payable to the order of
     the Administrative Agent for the benefit of the Lenders in substantially
     the form of Exhibit E.

                (g)     To the extent not otherwise stated therein, the Notes
     shall be governed by the terms of this Agreement.

          2.3   PROCEDURE FOR BORROWING. As a condition precedent to borrowing
of Loans hereunder, the Borrower shall give the Administrative Agent an
irrevocable notice substantially in the form of EXHIBIT A-1 (i) in the case of
Tranche A Loan, on or prior to the Closing Date (which notice must be received
by the Administrative Agent prior to 10:00 a.m., New York City time on the
Closing Date), and (ii) in the case of Tranche B Loan, on any Business Day, at
the option of the Borrower, during the Availability Period (which notice must be
received by the Administrative Agent prior to 10:00 a.m., New York City time on
such day), in each case specifying (1) that a Loan is requested, (2) the
aggregate amount to be borrowed, (3) the requested borrowing date (which shall
be a Business Day), (4) whether the borrowing is to be of Eurodollar Loans,
Alternate Base Rate Loans or a combination thereof, (5) if the borrowing is to
be entirely or partly of Eurodollar Loans, the amounts of such Eurodollar Loans
and the lengths of the initial Interest Periods therefore, (6) the number and
the location of the account to which the proceeds are to be disbursed
(consistent with the provisions of hereof) and (7) the details of the Notes to
be issued. Upon receipt of any such notice from the Borrower, the Administrative
Agent shall promptly notify each Lender thereof. Each Lender will make the
amount of its pro rata share of each borrowing available to the Administrative
Agent for the account of the Borrower at the office of the Administrative Agent
specified in SECTION 9.2 prior to 11:00 a.m., New York City time, on the date
requested by the Borrower in funds immediately available to the Administrative
Agent. Such borrowing will then be made available to the Borrower by the
Administrative Agent by subscription of the Notes in the manner specified by the
Borrower in such Notice of Borrowing in the aggregate of the amounts made
available to the Administrative Agent by the Lenders and in like funds as
received by the Administrative Agent (net of the Pre-Funded Interest and fees
and expenses then due and payable (if any)). If the Borrower fails to indicate
the initial Interest Periods in such notice, the Interest Period shall be one
month.

          2.4   FEES. (a) The Borrower agrees to pay to the Administrative
     Agent, for the account of CSFB or the Administrative Agent, as applicable
     as set forth therein, fees payable in the amounts and at the times
     separately agreed upon by Aquila and such Person.

                (b)     The Borrower agrees to pay to the Administrative Agent
     for the account of each Lender (i) an up-front fee equal to 1.15% of the
     aggregate principal amount of its Tranche B Loans, which shall be due and
     payable on the date of borrowing of such Tranche B Loans, and (ii) a
     commitment fee on its Tranche B Commitment during the Availability Period,
     which commitment fee shall accrue at a rate per annum equal to seven
     percent (7%) per annum from the

                                       21
<Page>

     Closing Date to, and shall be payable on, the earliest of (x) the borrowing
     date of the Tranche B Loans, (y) termination of Tranche B Commitments (if
     any), or (z) on the last day of the Availability Period.

                (c)     All fees payable hereunder shall be paid on the dates
     due, in immediately available funds, to the Administrative Agent for the
     benefit of the parties entitled thereto. Fees paid shall not be refundable
     under any circumstances.

          2.5   OPTIONAL AND MANDATORY PREPAYMENTS. (a) OPTIONAL PREPAYMENT AND
     REDUCTION. (i) Subject to the provisions of this paragraph and, in the case
     of a prepayment, SECTION 2.15, the Borrower may, at any time and from time
     to time prepay the Loans or reduce the Tranche B Commitments, in whole or
     in part without premium or penalty, upon at least three Business Days'
     irrevocable written notice to the Administrative Agent, specifying the date
     and amount of prepayment or reduction and, in the case of a prepayment of
     Loans, whether such prepayment is of Eurodollar Loans, Alternate Base Rate
     Loans or a combination thereof, and, in each case of a combination thereof,
     the amount allocable to each. If any such notice is given, the amount
     specified in such notice shall be due and payable (in the case of a
     prepayment) or be the amount of such reduction in the Tranche B
     Commitments, on the date specified therein. Partial prepayments and
     reductions shall be in an aggregate principal amount of $5,000,000 or a
     whole multiple of $1,000,000 in excess thereof. The Lenders shall deliver
     to the Borrower the Notes and the Borrower shall either amend the Notes or
     issue new Notes to reflect the prepayment; PROVIDED that the failure to
     amend such Notes or issue new Notes or any error therein shall not in any
     manner affect the obligations of the Borrower to repay the Loans in
     accordance with the terms of this Agreement. The Borrower authorizes the
     Lender to amend its Notes to reflect any prepayment.

                (b)     MANDATORY PREPAYMENTS AND REDUCTIONS. If at any time, or
     from time to time, after the date hereof (each, a "REDUCTION EVENT"):

                (i)     any Specified Entity shall receive (A) any dividend on
          or other distribution with respect to its equity or other ownership
          interests in WA Gas Holdings Pty Ltd., Power Partnership Pty Ltd., or
          Energy Partnership Holdings Pty Ltd. (other than dividends or other
          distributions declared and made during any fiscal year based upon (and
          not in excess of) current earnings of such Specified Entity) or (B)
          any Net Cash Proceeds from the issuance or Disposition of any Capital
          Stock of any Specified Entity pursuant to SECTION 6.15(i);

                (ii)    Aquila or any of its Subsidiaries shall receive (A) any
          dividend on or other distribution with respect to its equity or other
          ownership interests in Aquila Piatt County Power or MEP Flora Power
          (other than repayment of Investments made in Aquila Piatt County Power
          pursuant to Section 6.8 (m) of the $430 Million Credit Agreement) or
          (B)

                                       22
<Page>

          any Net Cash Proceeds from the issuance or Disposition of any Capital
          Stock of Aquila Piatt County Power or MEP Flora Power (in the case of
          issuances, to the extent such Capital Stock is not pledged to the
          Collateral Agent pursuant to either the Aquila Piatt County Power
          Pledge Agreement or MEP Flora Power Pledge Agreement, to the extent
          such Capital Stock is required to be pledged thereunder);

                (iii)   an IPP Collateral Event (as defined in the $430 Million
          Credit Agreement) shall occur or Aquila or any of its Subsidiaries
          shall receive any dividend on or other distribution with respect to
          its equity or other ownership interests in any Independent Power
          Project (other than the repayment of Investments made in Onondaga
          Cogeneration Limited Partnership or Topsham Hydroelectric Generating
          Facility Trust No. 2 after the date hereof pursuant to SECTION 6.8 (j)
          or (k) of the $430 Million Credit Agreement);

                (iv)    a Canadian Collateral Event (as defined in the $430
          Million Credit Agreement) shall occur;

                (v)     Aquila or any of its Subsidiaries shall receive any Net
          Cash Proceeds from the initial attributable principal Indebtedness (or
          any incremental increase thereafter) incurred in connection with any
          accounts receivable financing by Aquila or any of its Subsidiaries
          (whether structured as a secured loan facility or a purchase
          facility); or

                (vi)    Aquila or any of its Subsidiaries receive any Net Cash
          Proceeds in respect of (A) any Disposition of any Pledged Equity
          Interest (as such term is defined in the Specified Company Pledge
          Agreement) or any Australian Asset, (B) any Disposition of any Pledged
          Equity Interest (as such term is defined in the Aquila Piatt County
          Power Pledge Agreement) or any asset of Aquila Piatt County Power, or
          (C) any Disposition of any Pledged Equity Interest (as such term is
          defined in the MEP Flora Power Pledge Agreement) or any asset of MEP
          Flora Power (in the case of Dispositions of assets in (B) or (C)
          above, other than any such Disposition made in the ordinary course of
          business);

then, on or before the second Business Day immediately succeeding the date of
such receipt, such Net Cash Proceeds, dividends or other distributions (or, in
the case of a Subsidiary which is not a Wholly-Owned Subsidiary, Aquila's pro
rata beneficial interest therein) shall be applied, FIRST, to the prepayment of
Loans then outstanding, and, SECOND, to the Borrower in which case the Tranche B
Commitments shall be reduced by the amount distributed to the Borrower, in each
case in an amount equal to such Net Cash Proceeds, dividends or other
distributions (or pro rata portion thereof, if applicable); PROVIDED, that with
respect to (iv) above, such Net Cash Proceeds, dividends or distributions (or
pro rata portion thereof, if applicable) shall be less any amount thereof used
to prepay the $430 Million Credit Agreement if the Pledged Equity Interest (as
such term is defined in the Canadian Pledge Agreement) then constitutes the
Additional

                                       23
<Page>

Collateral (as such term is defined in the $430,000,000 Credit Agreement); and
PROVIDED, FURTHER, that the Borrower shall not be obligated to make any such
mandatory prepayment (or reduction) unless and until the aggregate principal
amount of such Net Cash Proceeds, dividends or other distributions (or pro rata
portion thereof, if applicable) required to be but not yet so applied equals at
least $10,000,000. In the case of such Reduction Event, the Lender shall deliver
to the Borrower the Notes and the Borrower shall either amend the Notes or issue
new Notes to reflect the prepayment; PROVIDED that the failure to amend such
Notes or issue new Notes or any error therein shall not in any manner affect the
obligations of the Borrower to repay the Loans in accordance with the terms of
this Agreement. The Borrower authorizes the Lender to amend its Notes to reflect
any prepayment.

                (c)     EXCESS CASH FLOW. In addition to any other mandatory
     repayments pursuant to this SECTION 2.5, within 15 days after the end of
     each fiscal quarter of the Guarantors beginning with the fiscal quarter
     ending June 30, 2003, the Borrower shall prepay Loans in an aggregate
     principal amount equal to one hundred percent (100%) of Excess Cash Flow
     (as defined in the applicable Guaranty) with respect to the immediately
     previous fiscal quarter; provided that such mandatory prepayment shall not
     apply to the first $10,000,000, in the aggregate, of Excess Cash Flow for
     both Guarantors.

                (d)     ADDITIONAL AMOUNTS. Each prepayment of Loans pursuant to
     this SECTION 2.5 shall be accompanied by payment in full of accrued
     interest to such date on the amount prepaid, together with any additional
     amounts owing pursuant to SECTION 2.15 and any outstanding fees and
     expenses due and owing with respect to the amount prepaid. At the time of
     such prepayment, a corresponding portion of the Pre-Funded Interest (to the
     extent representing unaccrued interest) shall be released from the
     Collateral Account and transferred to the Borrower.

          2.6   INTEREST RATE CONVERSION AND CONTINUATION OPTIONS. (a) The
     Borrower may elect from time to time to convert Eurodollar Loans to
     Alternate Base Rate Loans by giving the Administrative Agent prior
     irrevocable notice of such election substantially in the form of
     EXHIBIT A-2 (a "NOTICE OF INTEREST RATE CONVERSION") (which notice must be
     received by the Administrative Agent by at least 10:00 a.m., New York City
     time, two (2) Business Days prior to such election); PROVIDED that any such
     conversion of Eurodollar Loans may be made only on the last day of an
     Interest Period with respect thereto. The Borrower may elect from time to
     time to convert Alternate Base Rate Loans to Eurodollar Loans by giving the
     Administrative Agent prior irrevocable notice of such election (which
     notice must be received by the Administrative Agent by at least 10:00 a.m.,
     New York City time, three Business Days prior to such election). Any such
     Notice of Interest Rate Conversion to Eurodollar Loans shall specify the
     length of the initial Interest Period or Interest Periods therefor. Upon
     receipt of any such notice, the Administrative Agent shall promptly notify
     each Lender thereof. All or any part of the outstanding Eurodollar Loans
     and Alternate Base Rate Loans may be converted as provided herein; PROVIDED
     that (i) no Loan may be converted

                                       24
<Page>

     into a Eurodollar Loan when any Event of Default has occurred and is
     continuing, (ii) no Loan may be converted into a Eurodollar Loan after the
     date that is one (1) month prior to the Maturity Date and (iii) such
     conversion shall be in an aggregate principal amount of $5,000,000 or a
     whole multiple of $1,000,000 in excess thereof.

                (b)     Any Eurodollar Loans may be continued as such upon the
     expiration of the then current Interest Period with respect thereto by the
     Borrower giving notice to the Administrative Agent, in accordance with the
     applicable provisions of the term "INTEREST PERIOD" set forth in
     SECTION 1.1 of the length of the next Interest Period to be applicable to
     such Loans; PROVIDED that (i) no Eurodollar Loan may be continued as such
     when any Event of Default has occurred and is continuing and (ii) no
     Eurodollar Loan which is a Loan may be continued as a Eurodollar Loan after
     the date that is one (1) month prior to the Maturity Date; PROVIDED,
     FURTHER, that if the Borrower shall fail to give any required notice as
     described above in this paragraph, or if such continuation is not permitted
     pursuant to the preceding proviso, such Loans shall be automatically
     converted to Alternate Base Rate Loans on the last day of such then
     expiring Interest Period. The Administrative Agent agrees to notify the
     Lenders of any notice of continuation referred to herein received by the
     Administrative Agent.

          2.7   MAXIMUM AMOUNTS OF EURODOLLAR TRANCHES. All borrowings,
conversions and continuations of Loans hereunder and all selections of Interest
Periods hereunder shall be in such amounts and shall be made pursuant to such
elections so that, after giving effect thereto, the aggregate principal amount
of the Loans comprising each Eurodollar Tranche shall be equal to $5,000,000 or
a whole multiple of $1,000,000 in excess thereof. There shall not be more than
five (5) Eurodollar Tranches at any one time outstanding.

          2.8   INTEREST RATES; DEFAULT RATE PAYMENT DATES. (a) Each Eurodollar
     Loan shall bear interest for each day during each Interest Period with
     respect thereto at a rate per annum equal to the Eurodollar Rate determined
     for the first day of such Interest Period (subject to daily adjustments, if
     any, required by changes in the Eurodollar Reserve Requirements) plus (i)
     4.00% from the Closing Date (calculated as day 1) through the 90th day,
     (ii) 6.00% for days 91 through 181, (iii) 8.00% for days 182 through 273,
     and (iv) 10.00% thereafter.

                (b)     Each Alternate Base Rate Loan shall bear interest at a
     rate per annum equal to the Alternate Base Rate plus (i) 3.00% from the
     Closing Date (calculated as day 1) through the 90th day, (ii) 5.00% for
     days 91 through 181, (iii) 7.00% for days 182 through 273, and (iv) 9.00%
     thereafter.

                (c)     If an Event of Default has occurred and is continuing,
     the Loans shall bear interest at a rate per annum equal to the rate that
     would otherwise be applicable thereto pursuant to the foregoing provisions
     of this Section plus 2% from the date of occurrence of such Event of
     Default until the date such Event of Default is cured or waived (after as
     well as before judgment). In addition, should

                                       25
<Page>

     any interest on such Loans or any fees or other amount (other than
     principal) payable hereunder not be paid when due (whether at the stated
     maturity, by acceleration or otherwise), such overdue amount shall bear
     interest (to the extent permitted by law in the case of interest on
     interest) at a rate per annum as determined pursuant to the preceding
     sentence which would be applicable to an Alternate Base Rate Loan, in each
     case, from the date of such non-payment until such amount is paid in full
     (after as well as before judgment).

                (d)     Interest shall be payable in arrears on each Interest
     Payment Date; PROVIDED that interest accruing pursuant to SECTION 2.8(c)
     shall be payable from time to time on demand. To the extent funds are
     available therefor, amounts on deposit in the Collateral Account shall be
     applied to the repayment of such interest when due.

          2.9   COMPUTATION OF INTEREST. (a) The Alternate Base Rate interest
     (when calculated based upon the prime rate) shall be calculated on the
     basis of a 365/366 day year and all other interest shall be calculated on
     the basis of a 360-day year for the actual days elapsed. The Administrative
     Agent shall as soon as practicable notify the Borrower and the Lenders of
     each determination of a Eurodollar Rate. Any change in the interest rate on
     a Loan resulting from a change in the Alternate Base Rate or the Eurodollar
     Reserve Requirements shall become effective as of the opening of business
     on the day on which such change becomes effective. The Administrative Agent
     shall, as soon as practicable, notify the Borrower and the Lenders of the
     effective date and the amount of each such change in interest rate.

                (b)     Each determination of an interest rate by the
     Administrative Agent pursuant to any provision of this Agreement (including
     the amount of any Pre-Funded Interest) shall be conclusive and binding on
     the Borrower and the Lenders in the absence of manifest error. The
     Administrative Agent, at the request of the Borrower, shall deliver to the
     Borrower a statement showing in reasonable detail the supporting
     calculations used by the Administrative Agent in determining any interest
     rate determined by the Administrative Agent.

          2.10  INABILITY TO DETERMINE INTEREST RATE. If prior to the first day
of any Interest Period:

                (a)     the Administrative Agent shall have reasonably
     determined (which determination shall be conclusive and binding upon the
     Borrower) that, by reason of circumstances affecting the relevant market,
     adequate and reasonable means do not exist for ascertaining the Eurodollar
     Rate for such Interest Period, or

                (b)     the Administrative Agent shall have received notice from
     the Required Lenders that the Eurodollar Rate determined or to be
     determined for such Interest Period will not adequately and fairly reflect
     the cost to such Lenders (as certified by such Lenders) of making or
     maintaining its affected Loans during such Interest Period,

                                       26
<Page>

          the Administrative Agent shall give telecopy or telephonic notice
thereof to the Borrower and the Lenders as soon as practicable thereafter (which
notice shall include supporting calculations in reasonable detail). If such
notice is given, (i) any Eurodollar Loans requested to be made on the first day
of such Interest Period shall be made as Alternate Base Rate Loans, (ii) any
Loans that were to have been converted on the first day of such Interest Period
to Eurodollar Loans shall be continued as Alternate Base Rate Loans and (iii)
any outstanding Eurodollar Loans shall be converted, on the first day of such
Interest Period, to Alternate Base Rate Loans. Until such notice has been
withdrawn by the Administrative Agent, no further Eurodollar Loans shall be made
or continued as such, nor shall the Borrower have the right to convert Alternate
Base Rate Loans to Eurodollar Loans.

          2.11  PRO RATA TREATMENT AND PAYMENTS; FUNDING RELIANCE. (a) The
     borrowing by the Borrower of Loans from the Lenders hereunder and any
     reduction of the Commitments of the Lenders shall be made pro rata
     according to the respective Commitment Percentages of the Lenders. Each
     payment (including each prepayment) by the Borrower on account of principal
     of and interest on the Loans of any one Type shall (except as may be
     required as a result of SECTION 2.14) be made pro rata according to the
     respective outstanding principal amounts of the Loans of such Type then
     held by the Lenders. All payments (including prepayments) to be made by the
     Borrower hereunder, whether on account of principal, interest, fees or
     otherwise, shall be made without setoff or counterclaim, subject to SECTION
     2.14 hereof, and shall be made prior to 12:00 noon, New York City time, on
     the due date thereof to the Administrative Agent, for the account of the
     Lenders, at the Administrative Agent's office specified in SECTION 9.2, in
     Dollars and in immediately available funds. The Administrative Agent shall
     distribute such payments to the Lenders promptly upon receipt in like funds
     as received. If any payment hereunder (other than payments on the
     Eurodollar Loans) becomes due and payable on a day other than a Business
     Day, such payment shall be extended to the next succeeding Business Day,
     and, with respect to payments of principal and interest thereon, shall be
     payable at the then applicable rate during such extension. The Borrower
     authorizes the Lender to amend its Notes to reflect any prepayment.

                (b)     Unless the Administrative Agent shall have been notified
     in writing by any Lender prior to the borrowing that such Lender will not
     make available to the Administrative Agent the amount that would constitute
     its Commitment Percentage of such borrowing on the Closing Date, the
     Administrative Agent may assume that such Lender is making such amount
     available to the Administrative Agent, and the Administrative Agent may, in
     reliance upon such assumption, make available to the Borrower a
     corresponding amount. If the Administrative Agent makes such amount
     available to the Borrower and if such amount is not made available to the
     Administrative Agent by the required time on the Borrowing Date therefor,
     such Lender shall pay to the Administrative Agent, on demand, such amount
     with interest thereon at a rate equal to the daily average Federal Funds
     Rate for the period until such Lender makes such amount immediately
     available to the Administrative Agent. A

                                       27
<Page>

     certificate of the Administrative Agent submitted to any Lender with
     respect to any amounts owing under this Section shall be conclusive in the
     absence of manifest error. If such Lender pays such amount to the
     Administrative Agent, then such amount shall constitute such Lender's Loan
     included in such borrowing. If such Lender's Commitment Percentage of such
     borrowing is not made available to the Administrative Agent by such Lender
     within three Business Days of such Borrowing Date, the Administrative Agent
     shall also be entitled to recover such amount with interest thereon at the
     rate per annum applicable to the applicable Loan, on demand, from the
     Borrower. The obligations of the Lenders hereunder are several and no
     Lender shall be responsible for any other Lender's failure to make Loans as
     required hereunder.

          2.12  ILLEGALITY. Notwithstanding any other provision herein, if the
adoption of or any change in any Requirement of Law after the date hereof or in
the interpretation or application thereof shall make it unlawful for any Lender
to make or maintain Eurodollar Loans as contemplated by this Agreement, (a) the
commitment of such Lender hereunder to make Eurodollar Loans, continue
Eurodollar Loans as such and convert Alternate Base Rate Loans to Eurodollar
Loans shall forthwith be suspended until such condition shall cease to exist and
(b) such Lender's Loans then outstanding as Eurodollar Loans, if any, shall be
converted automatically to Alternate Base Rate Loans on the respective last days
of the then current Interest Periods with respect to such Loans or within such
earlier period as required by law. If any such conversion of a Eurodollar Loan
occurs on a day which is not the last day of the then current Interest Period
with respect thereto, the Borrower shall pay to such Lender such amounts, if
any, as may be required pursuant to SECTION 2.15.

          2.13  REQUIREMENTS OF LAW. (a) If the adoption of or any change in any
     Requirement of Law or in the interpretation or application thereof or
     compliance by any Lender with any request or directive (whether or not
     having the force of law) from any central bank or other Governmental
     Authority made subsequent to the date hereof:

                (i)     shall subject any Lender to any tax of any kind
          whatsoever with respect to this Agreement, its Notes, any Eurodollar
          Loan, or its obligation to make Eurodollar Loans, or change the basis
          of taxation of payments to such Lender in respect thereof (except for
          Non-Excluded Taxes covered by SECTION 2.14 and changes in the rate of
          tax on the overall net income of such Lender);

                (ii)    shall impose, modify or hold applicable any reserve,
          special deposit, compulsory loan or similar requirement against assets
          held by, deposits or other liabilities in or for the account of,
          advances, loans or other extensions of credit by, or any other
          acquisition of funds by, any office of such Lender which is not
          otherwise included in the determination of the Eurodollar Rate
          hereunder; or

                (iii)   shall impose on such Lender any other condition;

                                       28
<Page>

          and the result of any of the foregoing is to increase the cost to such
Lender, by an amount which such Lender reasonably deems to be material, of
making, converting into, continuing or maintaining Eurodollar Loans, or to
reduce any amount receivable hereunder in respect thereof, then, in any such
case, the Borrower shall promptly pay such Lender, upon its demand, any
additional amounts necessary to compensate such Lender for such increased cost
or reduced amount receivable. If any Lender becomes entitled to claim any
additional amounts pursuant to this Section, it shall promptly notify the
Borrower through the Administrative Agent, of the event by reason of which it
has become so entitled. A certificate as to any additional amounts payable
pursuant to this Section submitted by such Lender through the Administrative
Agent to the Borrower shall be in writing and accompanied by calculations in
reasonable detail demonstrating the basis for such Lender's claim and shall be
considered conclusive in the absence of manifest error. This covenant shall
survive the termination of this Agreement and the payment of the Obligations
hereunder.

                (b)     If any Lender shall have determined that the adoption of
     or any change in any Requirement of Law regarding capital adequacy or in
     the interpretation or application thereof or compliance by such Lender or
     any corporation controlling such Lender with any request or directive
     regarding capital adequacy (whether or not having the force of law) from
     any Governmental Authority made subsequent to the date hereof has or shall
     have the effect of reducing the rate of return on such Lender's or the
     corporation's capital as a consequence of its obligations hereunder to a
     level below that which such Lender or such corporation could have achieved
     but for such change or compliance (taking into consideration such Lender's
     or such corporation's policies with respect to capital adequacy) by an
     amount deemed by such Lender to be material, then from time to time, after
     submission by such Lender to the Borrower (with a copy to the
     Administrative Agent) of a written request therefor accompanied by
     calculations in reasonable detail demonstrating the basis for such Lender's
     claims, the Borrower shall pay to such Lender the additional amount or
     amounts as will compensate such Lender for such reduction. This covenant
     shall survive the termination of this Agreement and the payment of the
     Obligations hereunder.

          2.14  TAXES. (a) Except as otherwise provided in this SECTION 2.14,
     any and all payments made by the Borrower to or for the account of the
     Administrative Agent or any Lender under this Agreement, the Notes or the
     other Loan Documents shall be made free and clear of, and without deduction
     or withholding for or on account of, any present or future income, stamp or
     other taxes, levies, imposts, duties, charges, fees, deductions or
     withholdings, and all liabilities with respect thereto, now or hereafter
     imposed, levied, collected, withheld or assessed by any Governmental
     Authority, excluding net income taxes and franchise taxes (imposed in lieu
     of net income taxes) imposed on the Administrative Agent or any Lender by a
     jurisdiction under the Laws of which such Lender or its applicable lending
     office, or the Administrative Agent, as the case may be, is organized or
     maintained (any taxes, levies, imposts, duties, charges, fees, deductions,
     withholdings or liabilities other than such excluded net income taxes and
     franchise taxes imposed in lieu of income taxes are referred to

                                       29
<Page>

     herein as "NON-EXCLUDED TAXES"). If Non-Excluded Taxes are required to be
     deducted or withheld from or in respect of any amounts payable to the
     Administrative Agent or any Lender hereunder or under the Notes, (i) the
     amounts so payable to the Administrative Agent or such Lender shall be
     increased to the extent necessary, so that after making all required
     deductions or withholdings (including deductions or withholdings applicable
     to additional sums payable under this SECTION 2.14), the Administrative
     Agent or such Lender receives an amount equal to the sum it would have
     received had no such deductions or withholdings been made, (ii) the
     Borrower shall make such deductions or withholdings, and (iii) the Borrower
     shall pay the full amount deducted or withheld to the relevant Governmental
     Authority in accordance with applicable law; PROVIDED that the Borrower
     shall not be required to increase any such amounts payable to any Lender if
     such Lender fails to comply with the applicable requirements of paragraph
     (b) of this Section, unless such failure is the result of an event
     (including, without limitation, any change in treaty, law, or regulation)
     (a "CHANGE IN TAX LAW") occurring subsequent to the date that such person
     became a Lender and prior to the date on which such Lender would otherwise
     have been required to comply with such requirements. Whenever any
     Non-Excluded Taxes are payable by the Borrower, as promptly as possible
     thereafter, the Borrower shall send to the Administrative Agent for its own
     account or for the account of such Lender, as the case may be, a certified
     copy of an original official receipt received by the Borrower showing
     payment thereof. The Borrower agrees to indemnify and hold harmless each
     Lender and the Administrative Agent, within 10 days of a written demand
     therefor, from the full amount of Non-Excluded Taxes paid or incurred by
     such Lender or the Administrative Agent (as the case may be) on or with
     respect to any payment made by or on account of any obligation of Borrower
     hereunder (including Non-Excluded Taxes imposed or asserted or attributable
     to amounts payable under this SECTION 2.14) and any penalties, interest and
     reasonable expenses arising therefrom or with respect thereto, whether or
     not such Non-Excluded Taxes were correctly or legally imposed or asserted
     by the relevant Governmental Authority, but only if the applicable Lender
     has complied with the requirements of paragraph (b) of this Section (or has
     been excused from compliance as a result of a Change in Tax Law occurring
     subsequent to the date such person became a Lender and prior to the date on
     which such Lender would otherwise have been required to comply with such
     requirements). A certificate as to the amount of such payment of liability
     delivered to the Borrower by a Lender, or by the Administrative Agent on
     its behalf or on behalf of a Lender, shall be conclusive absent manifest
     error. The covenants in this Section shall survive the termination of this
     Agreement and the payment of the Notes and payment of the Obligations
     hereunder.

                (b)     Each Lender shall:

                (i)     at the time it first becomes a Lender (A) in the case of
          a Lender that is not incorporated under the laws of the United States
          or any state thereof ("FOREIGN LENDER") certify to the Borrower and
          Administrative Agent that it is entitled to an exemption from or
          reduction

                                       30
<Page>

          of withholding tax under the law of the jurisdiction in which the
          Borrower is located, or any treaty to which such jurisdiction is a
          party, with respect to payments under this Agreement, at the time or
          times prescribed by applicable law, by providing two copies of such
          properly completed and executed form or certification prescribed by
          applicable law or reasonably requested by the Borrower as will permit
          such payments to be made without withholding and (B) in the case of
          any other Lender, certify to the Borrower and Administrative Agent
          that it is entitled to an exemption from United States backup
          withholding tax with respect to payments under this Agreement by
          providing two copies of a properly completed and executed Internal
          Revenue Service Form W-9, as applicable, or successor applicable form,
          as the case may be;

                (ii)    deliver to the Borrower and the Administrative Agent two
          further copies of any such form or certification on or before the date
          that any such form or certification expires or becomes obsolete and
          after the occurrence of any event requiring a change in the most
          recent form previously delivered by it to the Borrower; and

                (iii)   obtain such extensions of time for filing and complete
          such forms or certifications as may reasonably be requested by the
          Borrower or the Administrative Agent;

                unless in any such case a Change in Tax Law has occurred
     subsequent to the date that such person became a Lender and prior to the
     date on which any such delivery would otherwise be required which renders
     such form inapplicable or which would prevent such Lender from duly
     completing and delivering any such form with respect to it and such Lender
     so advises the Borrower and the Administrative Agent. Each Person that
     shall become a Lender or a Participant pursuant to SECTION 9.6 shall, upon
     the effectiveness of the related transfer, be required to provide all the
     applicable forms and statements required pursuant to this Section; PROVIDED
     that, in the case of a Participant, such Participant shall furnish all such
     required forms and statements to the Lenders from which the related
     participation shall have been purchased.

                (c)     In addition, the Borrower shall pay any and all stamp or
     documentary taxes or any other excise or property taxes, charges or similar
     levies arising from any payment made under this Agreement, the Notes or the
     other Loan Documents or from the execution, delivery or enforcement of, or
     otherwise with respect to, any such document.

          2.15  INDEMNITY. The Borrower agrees to indemnify each Lender and to
hold each Lender harmless from any loss or expense which such Lender may sustain
or incur as a consequence of (a) default by the Borrower in payment when due of
the principal amount of or interest on any Eurodollar Loan, (b) default by the
Borrower in making the borrowing of, a conversion into or a continuation of,
Eurodollar Loans after the Borrower has given a notice requesting the same, (c)
default by the Borrower in

                                       31
<Page>

making any prepayment or reduction after the Borrower has given a notice thereof
or (d) the making of a prepayment or conversion of Eurodollar Loans on a day
which is not the last day of an Interest Period with respect thereto, including,
without limitation, in each case, any such loss or expense arising from the
redeployment of funds obtained by it or from fees payable to terminate the
deposits from which such funds were obtained (but excluding loss of the margin
above the Eurodollar Rate). This covenant shall survive the termination of this
Agreement and the payment of the Obligations hereunder.

          2.16  DISCRETION OF LENDER AS TO MANNER OF FUNDING. Notwithstanding
any other provisions of this Agreement (but subject to SECTION 2.17), each
Lender shall be entitled to fund and maintain its funding of all or any part of
its Loans in any manner it sees fit, it being understood that for the purposes
of SECTION 2.15 all determinations thereunder shall be made assuming each Lender
had actually funded and maintained each Eurodollar Loan through the purchase of
deposits of Dollars in the London interbank market having a maturity
corresponding to each Loan's Interest Period and bearing an interest rate equal
to the Eurodollar Rate for such Interest Period.

          2.17  CHANGE OF LENDING OFFICE; REPLACEMENT LENDER. (a) Each Lender
     agrees that if it makes any demand for payment under SECTION 2.13 or
     SECTION 2.14 or if any adoption or change of the type described in SECTION
     2.12 shall occur with respect to it, such Lender will use reasonable
     efforts (consistent with its internal policy and legal and regulatory
     restrictions and so long as such efforts would not be disadvantageous to it
     as determined in its sole discretion) to designate a different lending
     office if the making of such a designation would reduce or obviate the need
     for the Borrower to make payments under SECTION 2.13 or SECTION 2.14, or
     would eliminate or reduce the effect of any adoption or change described in
     SECTION 2.12.

                (b)     In determining the amount of any claim for reimbursement
     or compensation hereunder, each Lender will use reasonable methods of
     calculation consistent with such methods customarily employed by such
     Lender in similar situations.

                (c)     Each Lender will notify the Borrower and the
     Administrative Agent of any event giving rise to a claim under SECTIONS
     2.12, 2.13, 2.14 or 2.15 promptly after the occurrence thereof, which
     notice shall be accompanied by a certificate of such Lender setting forth
     in reasonable detail the circumstances of such claim.

                (d)     If any Lender, other than (in its capacity as a Lender)
     the Administrative Agent (an "AFFECTED LENDER"), seeks payment or
     indemnification from the Borrower pursuant to SECTION 2.13 or SECTION
     2.14(a) (without prejudice to any amounts then due to such Lender under
     such Sections) that are not applicable to all Lenders, then the Borrower
     may designate another Lender or another bank or financial institution
     acceptable to the Administrative Agent to assume, in accordance with
     SECTION 9.6, all (but not less than all) the Commitments, Loans and other
     rights and obligations of such Affected Lender

                                       32
<Page>

     hereunder (a "REPLACEMENT LENDER"), in each case, on a date mutually
     acceptable to the Replacement Lender, the Affected Lender, the Borrower and
     the Administrative Agent, without recourse upon, warranty by, or expense
     to, such Affected Lender or the Administrative Agent, for a purchase price
     equal to the outstanding principal amount of the Loans of such Affected
     Lender PLUS all interest accrued thereon and all other amounts owing to
     such Affected Lender hereunder, or such other purchase price as may be
     mutually agreed upon between the Affected Lender and the Replacement
     Lender, upon such assumption and purchase by the Replacement Lender, such
     Replacement Lender shall be deemed a "Lender" for purposes of this
     Agreement and the other Loan Documents and such Affected Lender shall cease
     to be a "Lender" for such purposes and shall no longer have any obligations
     hereunder.

          2.18  COLLATERAL. (a) On the Closing Date, the Borrower shall grant to
     the Collateral Agent, for the benefit of the Secured Parties (as defined
     therein, including the Lenders), a security interest in the collateral
     described in the Aquila Piatt County Power Pledge Agreement, the ANCMC
     Canadian Pledge Agreement, the Canadian Pledge Agreement, the Collateral
     Account Agreement, the IPP Pledge Agreement, the MEP Flora Power Pledge
     Agreement and the Specified Company Pledge Agreement. The Lien of the ANCMC
     Canadian Pledge Agreement and the Canadian Pledge Agreement securing the
     Obligations shall be junior to the Lien therein securing the $430 Million
     Credit Agreement obligations. The Lien of the IPP Pledge Agreement securing
     the Obligations shall be senior to the Lien therein securing the $430
     Million Credit Agreement obligations.

                (b)     In the event that (i) an Investment is made in
     compliance with SECTION 6.8(f), (ii) such Investment is pledged to the
     Collateral Agent pursuant to SECTION 6.15 and the applicable Collateral
     Document, and (iii) such Investment is subsequently repaid, the Lien of the
     applicable Collateral Document shall be released to the extent covering
     such Investment and the proceeds of such Investment (if then in the
     possession of the Collateral Agent) shall be turned over to the pledgor so
     long as, after giving effect to such release, (y) no Event of Default then
     exists or would occur and (z) the Borrower shall be in compliance with the
     terms hereof including, without limitation, SECTION 6.8(f). The Collateral
     Agent is hereby authorized by each of the Lenders to take any action
     requested by the Borrower and reasonably acceptable to the Collateral Agent
     in order to effect such release.

                (c)     In the event that (i) ANCMC shall have merged,
     consolidated or amalgamated into, or ANCFC shall have sold or otherwise
     (directly or indirectly) transferred all of the assets of ANCMC to either
     Canadian Parent or any Wholly-Owned Subsidiary of either Canadian Parent,
     in compliance with SECTION 6.2(b) of the $430 Million Credit Agreement or
     (ii) the Lien of the Canadian Pledge Agreement shall have been terminated
     in accordance with the terms thereof, the Lien of the ANCMC Canadian Pledge
     Agreement shall be released and the ANCFC Guaranty shall be terminated so
     long as, after giving

                                       33
<Page>

     effect to such release, no Event of Default then exists or would occur. The
     Collateral Agent is hereby authorized by each of the Lenders to take any
     action requested by the Borrower and reasonably acceptable to the
     Collateral Agent in order to effect such release.

                (d)     If the Borrower (or the applicable pledgor) shall
     request the release under any Collateral Document of any Subsidiary or of
     any Collateral to be sold or otherwise disposed of (including through the
     sale or Disposition of any Subsidiary owning any such Subsidiary or
     Collateral) to a Person in a transaction permitted under the terms of
     SECTION 6.7 and shall deliver to the Collateral Agent a certificate to the
     effect that such sale or other Disposition and the application of the
     proceeds thereof will comply with the terms of this Agreement, the
     Collateral Agent, if satisfied that the applicable certificate is correct,
     shall, without the consent of any Lender or Agent, execute and deliver all
     such instruments, releases, financing statements or other agreements, and
     take all such further actions, as shall be necessary to effectuate the
     release of such Subsidiary or such Collateral substantially simultaneously
     with (or such later date as the Borrower requests after) completion of such
     sale or other Disposition; PROVIDED that any proceeds of such sale or other
     Disposition shall remain subject to the Lien of the Collateral Documents.

                (e)     Notwithstanding the foregoing, in no event shall any
     release contemplated hereby effect the Lien of any Collateral Document to
     the extent securing obligations under the $430 Million Credit Agreement
     without compliance with the terms thereof.

                (f)     Any such release shall be without recourse to, or
     representation or warranty by, the Collateral Agent or any Lender and shall
     not require the consent of any Lender. Without limiting the provisions of
     SECTION 9.5, the Borrowers shall reimburse the Collateral Agent and the
     Administrative Agent for all reasonable costs and expenses, including
     reasonable attorney's fees and disbursements, incurred by any of them in
     connection with any action contemplated by this SECTION 2.18.

                    ARTICLE 3. REPRESENTATIONS AND WARRANTIES

          To induce the Administrative Agent and the Lenders to enter into this
Agreement and to make or participate in extensions of credit hereunder, the
Borrower hereby represents and warrants to the Administrative Agent and each
Lender:

          3.1   FINANCIAL CONDITION. The unaudited consolidated balance sheet of
the Borrower as of December 31, 2002 and the related consolidated statements of
income for the fiscal year ended on such date, copies of which have heretofore
been furnished to the Lenders, present fairly the consolidated financial
condition of the Borrower and its Subsidiaries as at such date, and the results
of their operations for the fiscal year then ended.

                                       34
<Page>

          3.2   NO CHANGE. Since December 31, 2002, except as disclosed to the
Lenders through documents posted on the INTRALINKS internet website for this
transaction prior to the date hereof, there has been no development or event
which has had, or could reasonably be expected to have, a Material Adverse
Effect.

          3.3   CORPORATE EXISTENCE; COMPLIANCE WITH LAW. Each of the Borrower
and its Subsidiaries (a) is duly organized, validly existing and in good
standing under the laws of the jurisdiction of its organization, (b) has the
corporate or limited liability company power and authority, and the legal right
to own and operate its property, to lease the property it operates as lessee and
to conduct the business in which it is currently engaged, (c) is duly qualified
as a foreign corporation or limited liability company and in good standing under
the laws of each jurisdiction where its ownership, lease or operation of
property or the conduct of its business requires such qualification except to
the extent that the failure to comply therewith could not, in the aggregate,
reasonably be expected to have a Material Adverse Effect and (d) is in
compliance with all Requirements of Law, except to the extent that the failure
to comply therewith could not reasonably be expected to have a Material Adverse
Effect.

          3.4   CORPORATE POWER; AUTHORIZATION; ENFORCEABLE OBLIGATIONS. The
Borrower has the corporate power and authority, and the legal right, to make,
deliver and perform the Loan Documents and to authorize the execution, delivery
and performance of the Loan Documents, and to borrow hereunder. The Borrower has
taken all necessary corporate action to authorize the borrowings on the terms
and conditions set forth in this Agreement and in the Notes and to execute,
deliver and perform its obligations under the Loan Documents. No consent or
authorization of, filing with, notice to or other act by or in respect of, any
Governmental Authority or any other Person is required by the Borrower in
connection with the borrowings hereunder, or with the execution, delivery,
performance, validity or enforceability of the Loan Documents other than any
consents, authorizations and filings in connection with the foregoing that, if
not obtained, could not reasonably be expected to have a Material Adverse
Effect. This Agreement has been, and each other Loan Document when executed and
delivered will be, duly executed and delivered on behalf of the Borrower. This
Agreement constitutes, and each other Loan Document when executed and delivered
will constitute, a legal, valid and binding obligation of the Borrower
enforceable against the Borrower, in accordance with their respective terms,
except as enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium or similar laws affecting the enforcement of
creditors' rights generally and by general equitable principles (whether
enforcement is sought by proceedings in equity or at law).

          3.5   NO LEGAL BAR. The execution, delivery and performance of the
Loan Documents, the borrowings hereunder and the use of the proceeds thereof,
will not violate any Requirement of Law or Contractual Obligation of the
Borrower or any Subsidiary which violation could reasonably be expected to have
a Material Adverse Effect, will not accelerate or result in the acceleration of
any payment obligations of the Borrower or such Subsidiary and will not result
in, or require, the creation or imposition of any Lien on any of the respective
properties or revenues of the Borrower or any such

                                       35
<Page>

Subsidiary pursuant to any such Requirement of Law or Contractual Obligation
(other than Liens pursuant to the Collateral Documents).

          3.6   NO MATERIAL LITIGATION. No litigation, investigation or
proceeding of or before any arbitrator or Governmental Authority is pending or,
to the knowledge of the Borrower, threatened by or against the Borrower or any
Subsidiary or against any of the respective properties or revenues of the
Borrower or any Subsidiary which could reasonably be expected to have a Material
Adverse Effect.

          3.7   NO DEFAULT.  No Default or Event of Default has occurred and is
 continuing.

          3.8   OWNERSHIP OF PROPERTY; LIENS. Each of the Borrower and its
Subsidiaries has good title to, or a valid leasehold easement, license or other
interest in, all its property. None of such property is subject to any Lien
other than Permitted Liens. Neither the Borrower nor any of its Subsidiaries has
any interest in real property.

          3.9   SUBSIDIARIES. Set forth on SCHEDULE 3.9 are all Subsidiaries of
the Borrower. SCHEDULE 3.9 correctly sets forth, as of the date hereof, (i) all
of the issued and outstanding Capital Stock or other equity interests of the
Specified Company and also identifies the direct owner thereof and (ii) the
percentage ownership (direct and indirect) of the Borrower in voting Capital
Stock or other voting equity interests of each Subsidiary and also identifies
the direct owner thereof. The Specified Company owns, direct or indirect, all of
the issued and outstanding capital stock (whether or not voting Capital Stock)
of each of its Subsidiaries. All outstanding shares of Capital Stock of each
Subsidiary of the Borrower has been duly and validly issued, are fully paid and
non-assessable and have been issued free of any preemptive rights. Except as set
forth on SCHEDULE 3.9, no Subsidiary has outstanding any securities convertible
into or exchangeable for its Capital Stock or outstanding any right to subscribe
for or to purchase, or any options or warrants for the purchase or, or any
agreement providing for the issuance (contingent or otherwise) of or any calls,
commitments or claims of any character relating to, its Capital Stock or any
stock appreciation or similar rights.

          3.10  INTELLECTUAL PROPERTY. Each of the Borrower and its Subsidiaries
owns, or is licensed to use, all patents, trademarks, trade names, copyrights,
and other intellectual property material to the conduct of its business as
currently conducted except for those which the failure to own or license could
not reasonably be expected to have a Material Adverse Effect (the "INTELLECTUAL
PROPERTY"). The use of such Intellectual Property by the Borrower or any
Subsidiary does not infringe on the rights of any Person, except for such claims
and infringements that, in the aggregate, could not reasonably be expected to
have a Material Adverse Effect.

          3.11  TAXES. Each of the Borrower and the Subsidiaries has filed or
caused to be filed all federal, state and other material tax returns which are
required to be filed and has paid or caused to be paid all taxes (including
interest and penalties) shown to be due and payable on said returns or on any
assessments made against it or any of its property and all other taxes, fees or
other charges imposed on it or any of its property by

                                       36
<Page>

any Governmental Authority (other than any tax, fee or other charge the amount
or validity of which is currently being contested in good faith by appropriate
proceedings and with respect to which reserves in conformity with GAAP have been
provided on the books of the Borrower or such Subsidiary, as the case may be,
and which the failure to pay or file a return with respect thereto could not
reasonably be expected to result in a Material Adverse Effect); and no tax Lien
has been filed, and, to the knowledge of the Borrower, no claim is being
asserted, with respect to any such tax, fee or other charge.

          3.12  MARGIN STOCK. (a) The Borrower is not engaged in the business of
     extending credit for the purpose of purchasing or carrying margin stock
     (within the meaning of Regulation U), and no proceeds of any extension of
     credit hereunder will be used to purchase or carry any margin stock or to
     extend credit to others for the purpose of purchasing or carrying any
     margin stock, except in compliance with applicable law and regulations.

                (b)     Following application of the proceeds of each extension
     of credit hereunder, not more than 25% of the value of the consolidated
     assets of the Borrower and its Subsidiaries that are subject to the
     provisions of SECTION 6.4 will be comprised of margin stock.

          3.13  ERISA. Neither the Borrower nor any Subsidiary maintains,
contributes to or has material obligations with respect to, any welfare plan (as
defined in SECTION (3)(1) of ERISA) which provides benefits to employees after
termination of employment other than as required by Part 6 of Title I of ERISA
or similar state laws regarding continuation of benefits and which in the
aggregate is not unduly expensive. Each Plan has complied and is in compliance
in all respects with the applicable provisions of ERISA and the Code except
where failure to do so could not reasonably be expected to have a Material
Adverse Effect. The Borrower and each Subsidiary have not breached any of the
responsibilities, obligations or duties imposed on it by ERISA, the Code, or
regulations promulgated thereunder with respect to any Plan, which breach could
reasonably be expected to have a Material Adverse Effect. Neither the Borrower
nor any Subsidiary nor any fiduciary of any Plan who is an officer or an
employee of the Borrower or any Subsidiary has engaged in a nonexempt prohibited
transaction described in Section 406 of ERISA or 4975 of the Code with respect
to a Plan which could reasonably be expected to have a Material Adverse Effect.
With respect to any employee benefit plan (as defined in Section 3(3) of ERISA)
currently or formerly maintained or contributed to by any Commonly Controlled
Entity, no liability exists and no event has occurred which could reasonably be
expected to subject the Borrower or any Subsidiary to any liability which could
reasonably be expected to have a Material Adverse Effect. None of the Borrower
or any Subsidiary has any liability, direct or indirect, contingent (including,
without limitation, any such liability in connection with a Multiemployer Plan)
or otherwise, under Title IV of ERISA or under Section 412 of the Code which
could reasonably be expected to have a Material Adverse Effect.

          3.14  HOLDING COMPANY; INVESTMENT COMPANY ACT; OTHER REGULATIONS. The
Borrower is not (a) an "investment company" or a company "controlled" by an
"investment company", within the meaning of the Investment Company Act of 1940,
as

                                       37
<Page>

amended, or (b) the Borrower is not a "holding company", a "subsidiary company"
of a "holding company", or an "affiliate" of a "holding company", as each such
term is defined in the Public Utility Holding Company Act of 1935, as amended.

          3.15  PURPOSE OF LOANS. The proceeds of Loans will be used solely (i)
first to fund Pre-Funded Interest and (ii) thereafter, for general corporate
purposes as permitted hereunder (in compliance with all applicable legal and
regulatory requirements). The Borrower does not intend to treat the Loans and
the related transactions as being a "reportable transaction" (within the meaning
of Treasury Regulation Section 1.6011-4). In the event the Borrower determines
to take any action inconsistent with such intention, it will promptly notify the
Administrative Agent thereof.

          3.16  ENVIRONMENTAL MATTERS. The Borrower and each of its Subsidiaries
is in compliance, in all material respects, with all applicable Environmental
Laws. None of the Borrower or any of its Subsidiaries has incurred any
Environmental Liabilities which could reasonably be expected to have a Material
Adverse Affect.

          3.17  INSURANCE. All policies of insurance of any kind or nature
maintained by or issued to the Borrower or any Subsidiary, including, without
limitation, policies of life, fire, theft, product liability, public liability,
property damage, other casualty, employee fidelity, worker's compensation,
employee health and welfare, title, property and liability insurance, are in
full force and effect in all material respects and are of a nature and provide
such coverage as is customarily carried by companies of similar size and
character.

          3.18  ACCURACY AND COMPLETENESS OF INFORMATION. The Borrower has
disclosed to the Lenders through documents posted on the intralinks internet
website for this transaction all agreements, instruments and corporate or other
restrictions to which it or any of its Subsidiaries is subject, and all other
matters known to it, that, individually or in the aggregate, would result in a
Material Adverse Effect. No reports, financial statements, certificates or other
information furnished by or on behalf of the Borrower to the Administrative
Agent or any Lender (whether contained in the Confidential Information
Memorandum dated March 2003, disclosed to the Lenders through documents posted
on the intralinks internet website for this transaction, or otherwise) in
connection with the negotiation of this Agreement or any other Loan Document or
delivered hereunder (as modified or supplemented by, and taken together with
other information so furnished) contains any misstatement of a material fact or
omits to state any material fact necessary to make the statements therein, in
the light of the circumstances under which they were made, not misleading;
PROVIDED that, with respect to forward looking statements, the Borrower
represents only that such information was prepared in good faith based upon
assumptions believed to be reasonable at the time and notes that there can be no
assurance that such expectations, beliefs or projections will be achieved or
accomplished and that such projections are subject to an increasing degree of
uncertainty as they relate to later periods of time.

          3.19  LEASEHOLDS, PERMITS, ETC. The Borrower possesses or has the
right to use, all leaseholds, easements, franchises and permits and all
authorizations and other

                                       38
<Page>

rights which are material to and necessary for the conduct of the Business,
except where the failure to obtain such authorizations and other rights is
unlikely to result in a Material Adverse Effect. All the foregoing are in full
force and effect, and each of the Borrower and the Subsidiaries is in
substantial compliance with the foregoing without any known conflict with the
valid rights of others, except for such noncompliance with the foregoing which
could not reasonably be expected to have a Material Adverse Effect. No event has
occurred which permits, or after notice or lapse of time or both would permit,
the revocation or termination of any such leasehold, easement, franchise,
license or other right, which termination or revocation, considered as a whole,
could reasonably be expected to have a Material Adverse Effect.

          3.20  NO RESTRICTIVE COVENANTS. No Subsidiary of the Borrower is party
to, or otherwise bound by, any agreement or other arrangement that prohibits
such Subsidiary from making any payments, directly or indirectly, to the
Borrower, by way of dividends, advances, repayment of loans or advances,
reimbursements of management or other intercompany charges, expenses and
accruals or other returns on investment, or any other agreement or arrangement
that restricts the ability of such Subsidiary to make any payment, directly or
indirectly, to the Borrower other than the prohibitions and restrictions
permitted to exist under SECTION 6.12.

          3.21  REPAYMENT OF THIRD PARTY INDEBTEDNESS BY UAPL. All outstanding
third party Indebtedness of UAPL or any of its Subsidiaries, including without
limitation, all outstanding Indebtedness under the ISIS Gas Holding Pty Bank
Facility and UAPL medium term notes, are paid in full and all amounts
outstanding thereunder are repaid in full and the Liens granted thereunder are
released.

                         ARTICLE 4. CONDITIONS PRECEDENT

          4.1   CONDITIONS TO CLOSING DATE. The obligations of the Lenders to
make Loans hereunder shall not become effective until the date on which each of
the following conditions is satisfied (or waived in accordance with
SECTION 9.1):

                (a)     DOCUMENTS. The Administrative Agent shall have received
     each of the following documents, each of which shall be satisfactory to the
     Administrative Agent (and to the extent specified below, to each Lender) in
     form and substance:

                (i)     EXECUTED COUNTERPARTS. From each party hereto either (i)
          multiple counterparts of this Agreement, signed on behalf of such
          party or (ii) written evidence satisfactory to the Administrative
          Agent (which may include telecopy transmission of a signed signature
          page to this Agreement) that such party has signed a counterpart of
          this Agreement;

                (ii)    CORPORATE DOCUMENTS. Such documents and certificates as
          the Administrative Agent or its counsel may reasonably request,
          certified as of the Closing Date as complete and correct copies
          thereof by the

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          Secretary or an Assistant Secretary of the Borrower, relating to (i)
          the organization, existence and good standing of the Borrower, (ii)
          the authorization of the execution, delivery and performance by the
          Borrower of this Agreement, and of the borrowings hereunder by the
          Borrower, and (iii) certificates as to the incumbency and signature of
          each individual signing this Agreement and any other agreement or
          document contemplated hereby on behalf of the applicable Credit Party;

                (iii)   FINANCIAL STATEMENTS. Copies of the unaudited
          consolidated balance sheet of the Borrower as of December 31, 2002;

                (iv)    COLLATERAL DOCUMENTS. The Administrative Agent shall
          have received the Collateral Documents together with all documentation
          necessary and appropriate to convey (and confirm) a valid and
          perfected first-priority security interest in the Collateral, to the
          extent and as more specifically enumerated in the Collateral
          Agreements, executed by a duly authorized officer of the Borrower;

                (v)     CREDIT RATINGS. The Administrative Agent shall have
          received evidence of Borrower's obtaining pro forma private letter
          ratings of the credit facilities provided hereby from Moody's and
          Standard & Poor's;

                (vi)    REPAYMENT OF DEBT. Administrative Agent shall have
          received documentation satisfactory to the Administrative Agent and
          the Lenders evidencing that (y) the Clay County Synthetic Lease, the
          Piatt County Synthetic Lease, the Turbine Warehouse Synthetic Lease
          and the ANCL Credit Facility shall be repaid in full and such
          facilities shall have been terminated, (z) all outstanding third party
          Indebtedness of the UAPL or any of its Subsidiaries, UtilCo Group and
          its Subsidiaries (other than Indebtedness of the Independent Power
          Projects) and the Guarantors, including, without limitation, all
          outstanding Indebtedness under the ISIS Gas Holdings Pty Ltd. bank
          facility and UAPL medium term notes shall be paid in full, and in each
          case, all commitments thereunder shall have been terminated and all
          amounts outstanding thereunder shall have been repaid in full and the
          Liens granted thereunder shall have been released;

                (vii)   WAIVER AND CONSENT. The Administrative Agent shall have
          received documentation satisfactory to the Administrative Agent that
          the Waiver and Consent has been executed and delivered and all
          conditions precedents and other requirement thereto to the
          effectiveness thereof (other than the funding of the cash collateral
          account) have been satisfied and such agreement shall have become
          effective (or shall simultaneously with the funding of the Term Loans
          become effective); and

                                       40
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                (viii)  OTHER DOCUMENTS. Such other documents as the
          Administrative Agent or any Lender (acting through the Administrative
          Agent) may reasonably request.

                (b)     PRE-FUNDED INTEREST. The Collateral Agent shall have
     received from the proceeds of the Tranche A Loans the amount of Pre-Funded
     Interest with respect to the Tranche A Loans (as determined by the
     Administrative Agent).

                (c)     CLOSING FEES AND EXPENSES. The Administrative Agent
     shall have received payment of the fees to be received on the Closing Date
     separately agreed to between the Administrative Agent and the Borrower and
     shall have received reimbursement of all costs and expenses (including the
     fees and expenses of counsel to the Administrative Agent to the extent
     invoiced).

                (d)     LEGAL OPINIONS. The Administrative Agent shall have
     received, with a counterpart for each Lender, the executed legal opinions
     of counsel to the Borrower, which opinions shall be satisfactory in form
     and substance to the Administrative Agent.

                (e)     CLOSING CERTIFICATE. The Administrative Agent shall have
     received, with a counterpart for each Lender, a closing certificate of the
     Borrower substantially in the form of Exhibit B, dated as of the Closing
     Date and satisfactory in form and substance to the Administrative Agent.

                (f)     [INTENTIONALLY OMITTED].

                (g)     [INTENTIONALLY OMITTED].

                (h)     EXISTING CREDIT AGREEMENTS. The Administrative Agent
     shall have received documentation satisfactory to the Administrative Agent
     evidencing that (i) the Citibank 364-Day Revolving Credit Agreement shall
     have been terminated and all amounts outstanding thereunder shall have been
     repaid in full and the liens granted thereunder (if any) shall have been
     released, and (ii) all obligations under the Citibank 3-Year Revolving
     Credit Agreement shall have been paid in full (other than LC Outstandings
     on the Closing Date) and the liens granted thereunder (if any) shall have
     been released (other than the cash collateral lien with respect to the LC
     Outstandings).

                (i)     COLLATERAL ACCOUNT. The Administrative Agent shall have
     evidence that the Collateral Account shall have been established in a
     manner satisfactory to the Administrative Agent.

                (j)     APPRAISALS. The delivery to the Administrative Agent at
     least two (2) days prior to the Closing Date of a written appraisal, by an
     appraiser and in form reasonably satisfactory to the Administrative Agent,
     dated within thirty days of the Closing Date and covering the Independent
     Power Projects, the

                                       41
<Page>

     Canadian Parents, Goose Creek and Racoon Creek, in each case upon which
     appraisals Administrative Agent and the Lenders may expressly rely.

                (k)     CLOSING UNDER $430 MILLION CREDIT AGREEMENT. The closing
     under the $430 Million Credit Agreement shall have occurred.

                (l)     OUTSIDE CLOSING DATE. The Closing Date shall have
     occurred and each of conditions precedent set forth in this SECTION 4.1
     shall have been satisfied on or prior to May 15, 2003.

                (m)     REPRESENTATIONS AND WARRANTIES. Each of the
     representations and warranties made by the Borrower in or pursuant to the
     Loan Documents (except to the extent applicable to an earlier date) shall
     be true and correct in all material respects on and as of such date as if
     made on and as of such date (both before and after giving effect to such
     Transactions as shall be required to occur on or prior to the Closing
     Date).

                (n)     NO DEFAULT. No Default or Event of Default shall have
     occurred and be continuing on such date or after giving effect to the
     Transactions to be consummated on such date.

                (o)     NOTICE OF BORROWING. The Administrative Agent shall have
     received a Notice of Borrowing with respect to the Tranche A Loans in
     compliance with the terms hereof.

                (p)     TRANCHE A TERM NOTE. The Lenders and the Administrative
     Agent shall have received Notes with respect to the Tranche A Loans in
     accordance with Article 2 hereof.

                (q)     ADDITIONAL MATTERS. All corporate and other proceedings,
     and all documents, instruments and other legal matters in connection with
     the Transactions and the other transactions contemplated by this Agreement,
     and the other Loan Documents shall be reasonably satisfactory in form and
     substance to the Administrative Agent, and the Administrative Agent shall
     have received such other documents, instruments and legal opinions in
     respect of any aspect or consequence of the Transactions and the other
     transactions contemplated hereby or thereby as it shall reasonably request.

          4.2   CONDITIONS TO TRANCHE B LOANS. The agreement of each Lender to
make any Tranche B Loans is subject to the satisfaction of the following
conditions precedent:

                (a)     CONDITIONS TO CLOSING DATE. Each of the conditions
     precedent set forth in SECTION 4.1 shall have been satisfied or waived in
     connection with the making of the Tranche A Loans.

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<Page>

                (b)     NOTICE OF BORROWING. The Administrative Agent shall have
     received a Notice of Borrowing with respect to the Tranche B Loans in
     compliance with the terms hereof.

                (c)     NO EVENT OF DEFAULT. No Event of Default shall have
     occurred and be continuing on such date or after giving effect to the
     borrowing of the Tranche B Loans.

                (d)     PRE-FUNDED INTEREST. The Collateral Agent shall have
     received from the proceeds of the Tranche B Loans the amount of Pre-Funded
     Interest with respect to the Tranche B Loans (as determined by the
     Administrative Agent).

                (e)     FEES AND EXPENSES. The Administrative Agent shall have
     received from the proceeds of the Tranche B Loans payment of the fees to be
     received on the borrowing date of the Tranche B Loans as separately agreed
     between the Administrative Agent and the Borrower and shall have received
     reimbursement of all costs and expenses (including the fees and expenses of
     counsel to the Administrative Agent to the extent invoiced).

                (f)     TRANCHE B TERM NOTE. The Lenders and the Administrative
     Agent shall have received Notes in accordance with Article 2 hereof.

                        ARTICLE 5. AFFIRMATIVE COVENANTS

          The Borrower hereby agrees that for so long as any of the Commitments
remains in effect, any Loan remains outstanding and unpaid or any Obligation is
owing to any Lender, the Collateral Agent or the Administrative Agent hereunder
or under any other Loan Document, the Borrower shall and shall cause each of its
Subsidiaries to:

          5.1   FINANCIAL STATEMENTS. Beginning with the fiscal quarter ending
June 30, 2003, furnish to each Lender as soon as available, but in any event not
later than forty-five (45) days after the end of each quarterly period for each
of the fiscal quarters of each fiscal year of the Borrower, the unaudited
consolidated balance sheet of the Borrower and its Subsidiaries as at the end of
such quarter and the related unaudited consolidated statements of income of the
Borrower and its Subsidiaries for such quarter and the portion of the fiscal
year through the end of such quarter, certified by the chief financial officer
or treasurer of the Borrower as being fairly stated in all material respects.

          5.2   CERTIFICATES; OTHER INFORMATION. Furnish to the Administrative
Agent:

                (a)     [Intentionally Omitted];

                (b)     concurrently with the delivery of the financial
     statements referred to in SECTION 5.1, a certificate of the chief financial
     officer or treasurer of

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<Page>

     the Borrower, in form and substance satisfactory to the Administrative
     Agent (the "COMPLIANCE CERTIFICATE"), setting forth the description of any
     Reduction Event occurring during such period and the aggregate amount of
     Net Cash Proceeds, dividends or other distributions received during such
     period with respect to any Reduction Event; and

                (c)     promptly, such additional financial and other
     information as the Administrative Agent or any Lender may from time to time
     reasonably request.

          5.3   PAYMENT AND PERFORMANCE OF OBLIGATIONS. Perform in all respects
all of its obligations under the terms of agreements, indentures, mortgages,
security agreements and other debt instruments to which it is party or bound,
including, without limitation, pay, discharge or otherwise satisfy at or before
maturity or before they become delinquent, as the case may be, all taxes, fees
or other charges imposed on it or on any of its properties by any Governmental
Authority and all its other obligations of whatever nature except, in each case,
where the amount or validity thereof is currently being diligently contested in
good faith and reserves in conformity with GAAP with respect thereto have been
provided on the books of the Borrower or any of its Subsidiaries, as the case
may be, or where the failure to perform such obligations could not reasonably be
expected to result in a Material Adverse Effect.

          5.4   MAINTENANCE OF EXISTENCE. Renew and keep in full force and
effect its corporate existence, take all reasonable action to maintain all
rights, privileges and franchises necessary or desirable in the normal conduct
of its business except to the extent such failure to maintain could not, in the
aggregate, reasonably be expected to have a Material Adverse Effect and comply
with all Contractual Obligations and Requirements of Law except to the extent
that failure to comply therewith could not, individually or in the aggregate,
reasonably be expected to have a Material Adverse Effect; provided that any
Subsidiary may merge, consolidate or amalgamate in accordance with SECTION 6.2
(and such transaction shall not constitute a breach of this SECTION 5.4).

          5.5   MAINTENANCE OF PROPERTY; INSURANCE. Keep all property useful and
necessary in its business in good working order and condition (ordinary wear and
tear, and casualties, excepted), maintain with financially sound and reputable
insurance companies insurance on all its property in at least such amounts and
against at least such risks as are usually insured against in the same general
area by companies engaged in the same or a similar business, and furnish to the
Administrative Agent, upon request, full information as to the insurance carried
including certified copies of policies and certificates of insurance from a
nationally recognized insurance broker.

          5.6   INSPECTION OF PROPERTY; BOOKS AND RECORDS; DISCUSSIONS. Keep
proper books of records and accounts, in which full, true and correct entries in
conformity with GAAP and all Requirements of Law shall be made of all dealings
and transactions in relation to its business and activities; and permit after
reasonable notice representatives of the Administrative Agent or any Lender to
visit and inspect any of its properties and

                                       44
<Page>

examine and make abstracts from any of its books and records at any reasonable
time and as often as may reasonably be desired, and to discuss the business,
operations, properties and financial and other condition of the Borrower and
each Subsidiary with officers and employees of the Borrower and such Subsidiary
and with their independent certified public accountants. All costs and expenses
relating to any such visitation and inspection (i) in the case of a Lender,
shall be borne by such Lender, and (ii) in the case of the Administrative Agent,
shall be borne by the Administrative Agent unless a Default or an Event of
Default shall have occurred and be continuing.

          5.7   NOTICES. (a) Within five (5) days after the Borrower knows with
     respect to any notice under clause (i) or within ten (10) days with respect
     to any other notice under this SECTION 5.7(a), give notice to the
     Administrative Agent and each Lender of:

                (i)     the occurrence of any Default or Event of Default; or

                (ii)    any (i) default or event of default under any
          Contractual Obligation of the Borrower or any Subsidiary, or (ii)
          litigation, investigation or proceeding which may exist at any time
          between the Borrower or any such Subsidiary and any Governmental
          Authority, which in either case, if not cured or if adversely
          determined, as the case may be, could reasonably be expected to have a
          Material Adverse Effect.

          Each notice pursuant to this Section shall be accompanied by a
statement of a Responsible Officer setting forth details of the occurrence
referred to therein and stating what action the Borrower proposes to take with
respect thereto. For the purposes of this SECTION 5.7(a), the Borrower shall be
deemed to have knowledge when any officer of the Borrower charged with
responsibility for any matter that is the subject of such notice requirement
knows or should have known that such notice was required.

                (b)     At least two (2) days prior to such event (to the extent
     practicable), give notice to the Administrative Agent of the occurrence of
     any Reduction Event (i) the Net Cash Proceeds, dividends or other
     distributions of which are (or are scheduled to be) in excess of $5,000,000
     or (ii) together with any other concurrent or prior Reduction Event for
     which notice has not been given hereunder the aggregate Net Cash Proceeds,
     dividends or other distributions of which are (or are scheduled to be) in
     excess of $10,000,000.

          5.8   ENVIRONMENTAL LAWS. (a) Comply and cause its Subsidiaries to
     comply in all material respects with all applicable Environmental Laws and
     obtain and comply and cause its Subsidiaries to obtain and comply in all
     material respects with and maintain and cause its Subsidiaries to maintain
     any and all licenses, approvals, notifications, registrations or permits
     required by applicable Environmental Laws except to the extent that failure
     to do so could not be reasonably expected to have a Material Adverse
     Effect.

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<Page>

                (b)     Conduct and complete all investigations, studies,
     sampling and testing, and all remedial, removal and other actions required
     under Environmental Laws and promptly comply in all material respects with
     all lawful orders and directives of all Governmental Authorities regarding
     Environmental Laws except to the extent that the same are being contested
     in good faith by appropriate proceedings and the pendency of such
     proceedings could not reasonably be expected to have a Material Adverse
     Effect.

          5.9   ERISA. Establish, maintain and operate and cause each of its
Subsidiaries to establish, maintain and operate all Plans to comply in all
material respects with the applicable provisions of ERISA, the Code, and all
other applicable laws, and the regulations and interpretations thereunder and
the respective requirements of the governing documents for such Plans except to
the extent that failure to do so could not reasonably be expected to have a
Material Adverse Effect.

          5.10  USE OF PROCEEDS. Use the proceeds of each extension of credit
hereunder solely for the purposes set forth in SECTION 3.15. The Borrower
acknowledges that one or more of the Lenders may treat its Loans as part of a
transaction that is subject to Treasury Regulation Section 301.6112-1, and such
Lender or Lenders, as applicable, will maintain the lists and other records
required by such Treasury Regulation.

          5.11  MARGIN STOCK. Not permit the aggregate value of margin stock (as
defined in Regulation U) at any time owned or held by the Borrower or any of its
Subsidiaries to exceed an amount equal to 25% of the value of all consolidated
assets subject at such time to any "arrangement" (as such term is used in the
definition of "indirectly secured" in Section 221.2 of Regulation U).

          5.12  COLLATERAL DOCUMENTS. At its sole cost and expense, shall take
all actions necessary or reasonably requested by the Administrative Agent to
maintain each Collateral Document in full force and effect and enforceable in
accordance with its terms, including (i) making filings and recordations, (ii)
making payments of fees and other charges, (iii) issuing, and if necessary,
filing or recording supplemental documentation, including continuation
statements, (iv) discharging all claims or other Liens (other than Permitted
Liens) adversely affecting the rights of the Administrative Agent or any Lender
in the Collateral, and (v) publishing or otherwise delivering notice to third
parties.

          5.13  SALE OF AUSTRALIAN ASSETS. (a) Use commercially reasonable
     efforts to sell the Australian Assets (or to otherwise cause the
     Investments held by the Specified Entities in WA Gas Holdings Pty Ltd.,
     Power Partnership Pty Ltd., and Energy Partnership Holdings Pty Ltd. to be
     liquidated into cash proceeds (by way of Disposition thereof or receipt of
     liquidating distributions with respect thereto)) upon fair and reasonable
     terms in one or more arm's-length transactions to the extent necessary to
     repay the credit facility provided hereby in full.

                (b)     If the sale of all or a portion of the Australian Assets
     sufficient to repay all Obligations outstanding hereunder in full shall not
     be completed within 180 days from the Closing Date, immediately commence,
     and

                                       46
<Page>

     cause UtilCo Group to immediately commence, a formal sale process to sell
     the Australian Assets and UtilCo Group equity or other ownership interests
     in the Independent Power Projects.

                (c)     Use commercially reasonable efforts (including voting
     its equity interests to effect such distribution) to cause its pro rata
     portion of any Net Cash Proceeds, dividends or other distributions received
     by WA Gas Holdings Pty Ltd., Power Partnership Pty Ltd., or Energy
     Partnership Holdings Pty Ltd. from any dividend or distributions on any of
     their respective Investments or any Dispositions of any of their respective
     assets (including without limitation any Investments), to the extent
     legally permitted to do so and necessary to prepay the Loans in full (but
     net of any amounts necessary to repay any Indebtedness or other liabilities
     of such entity), be dividended or otherwise distributed to a Specified
     Entity as soon as practicable after its receipt thereof.

                          ARTICLE 6. NEGATIVE COVENANTS

          The Borrower hereby agrees that for so long as the Commitments remain
in effect, any Loan remains outstanding and unpaid or any Obligation is owing to
any Lender, the Collateral Agent or the Administrative Agent hereunder or under
any other Loan Document, the Borrower shall not:

          6.1   COLLATERAL ASSET COVERAGE. Permit at any time the ratio of (a)
the fair value of the Independent Power Projects, the Canadian Parents (after
the release of the Senior Lien (as defined in the Canadian Pledge Agreement)),
Goose Creek, Raccoon Creek and the Australian Assets (in each case, to the
extent the Lien of the applicable Collateral Document on such collateral remains
in full force and effect) to (b) the aggregate principal amount of Loans then
outstanding to be less than 2.00 to 1.00 (such fair value to be calculated as
the appraised values (set forth in the appraisals referred to in SECTION 4.1(j))
as adjusted by any write-downs or write-offs relating thereto (as reflected on
the consolidated financial statements for Aquila) and by any Dispositions with
respect thereto consummated by Aquila or its Subsidiaries after the date
hereof).

          6.2   LIMITATION ON FUNDAMENTAL CHANGES. (a) Enter into any merger,
     consolidation or amalgamation, or liquidate, wind up or dissolve itself (or
     suffer any liquidation or dissolution).

                (b)     Permit any Specified Entity to enter into any merger,
     consolidation or amalgamation, or liquidate, wind up or dissolve itself (or
     suffer any liquidation or dissolution), except that any Specified Entity
     (other than the Specified Company) may merge with or consolidate or
     amalgamate into, or sell or otherwise transfer assets to, the Specified
     Company or any other Specified Entity (provided, in the case of a merger,
     consolidation or amalgamation, the Specified Company or such other
     Specified Entity, as applicable, is the surviving entity).

                                       47
<Page>

          6.3   LIMITATION ON TRANSACTIONS WITH AFFILIATES. Except for
transactions providing services at cost to any Subsidiary or Affiliate, enter
into, or permit any Subsidiary to enter into, any transaction, including,
without limitation, any purchase, sale, lease or exchange of property or the
rendering of any service, with any Affiliate unless such transaction is upon
fair and reasonable terms no less favorable to the Borrower (or such Subsidiary)
than it would have obtained in a comparable arm's-length transaction with a
Person which is not an Affiliate.

          6.4   LIMITATION ON LIENS. Except as required to consummate a sale of
the Australian Assets (the terms of which comply with SECTION 6.7 and are
otherwise acceptable to the Administrative Agent), create, incur, assume or
suffer to exist, and shall not permit any Subsidiary to create, incur, assume or
suffer to exist, any Lien upon any of its properties, assets or revenues,
whether now owned or hereafter acquired, except for Permitted Liens.

          6.5   AMENDMENTS OF ORGANIZATIONAL DOCUMENTS. Amend, modify or change,
or permit any Subsidiary to amend, modify or change, its articles of
incorporation or bylaws, in any manner that could reasonably be expected to
result in a Material Adverse Effect.

          6.6   LIMITATION ON GUARANTEE OBLIGATIONS. Create, incur, assume or
suffer to exist, and shall not permit any Subsidiary to create, incur, assume or
suffer to exist, any Guarantee Obligation except guarantees of obligations to
third parties made in the ordinary course of business not relating to Debt.

          6.7   LIMITATION ON SALE OF ASSETS. Convey, sell, lease, assign,
transfer or otherwise dispose of, and shall not permit any Subsidiary to convey,
sell, lease, assign, transfer or otherwise dispose of any of, its property,
business or assets (including, without limitation, tax benefits, receivables and
leasehold interests), whether now owned or hereafter acquired, unless (1) no
Event of Default then exists, (2) such transaction is an arm's length
transactions for fair sale value, (3) (A) at least eighty percent (80%) of the
purchase price therefor is in cash or the Net Cash Proceeds thereof constituting
the cash portion of such purchase price is sufficient to repay all Obligations
outstanding in full (for purposes of this clause (3), any Disposition which
causes a Subsidiary of the Borrower to no longer be a Subsidiary shall be deemed
a sale of all the Capital Stock of such entity (with the Capital Stock retained
by the Specified Entities being included in the non-cash portion of such
purchase price) and (B) such cash portion of the purchase price shall be due and
payable at (or prior to) the time of such Disposition (provided that, in the
case of a Disposition of UtiliCorp Southern Cross Pty Ltd. (or any Investment
held by such Subsidiary or any of its Subsidiaries) (so long as Specified
Company and its other Subsidiaries have not made any additional material
Investments therein after the date hereof which remain outstanding at such
time), such cash portion may be paid at such later date as the Borrower may
agree with the purchaser thereof), and (4) the Net Cash Proceeds thereof are
applied to the prepayment of the credit facilities hereunder as provided in
SECTION 2.5.

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<Page>

          6.8   LIMITATION ON INVESTMENTS, LOANS AND ADVANCES. Except as
required to consummate a sale of the Australian Assets (the terms of which
comply with SECTION 6.7 and are otherwise acceptable to the Administrative
Agent), make, and shall not permit any Subsidiary to make, any advance, loan,
extension of credit (excluding Guarantee Obligations but including any payment
by a guarantor thereunder) or capital contribution to, or purchase any Capital
Stock, bonds, notes, debentures or other securities of, or purchase all or a
material part of a business unit or line of business of (or all or substantially
all the assets of), or make any other investment in, any Person (any of the
foregoing, an "INVESTMENT"), except:

                (a)     Investments of the Borrower or any Subsidiary existing
     on the date hereof in any Subsidiary (and the Borrower or any Wholly-Owned
     Subsidiary may acquire such Investment in any Subsidiary);

                (b)     the Borrower and its Subsidiaries may invest in, acquire
     and hold Cash Equivalents;

                (c)     [Intentionally Omitted];

                (d)     Investments of the Borrower or any Subsidiary existing
     on the date hereof and the receipt of any additional securities
     constituting payments in kind on such existing Investments;

                (e)     Investments in obligations arising out of bankruptcy of
     customers and suppliers;

                (f)     in connection with cash management and tax efficient
     financing of Aquila and its Subsidiaries in the ordinary course of business
     consistent with past practice, Investments by Aquila or any Subsidiary of
     Aquila in Aquila or any Subsidiary of Aquila (other than UCS Holdings LLC
     or any of its Subsidiaries), PROVIDED that the proceeds thereof shall not
     be used to finance any capital expenditure; and PROVIDED, FURTHER, that so
     long as the Pledged Equity Interest (as such term is defined in the
     Specified Company Pledge Agreement) remains subject to the Lien of the
     Specified Company Pledge Agreement, (y) in the case of any Investment made
     by any Specified Entity in Aquila or any Subsidiary of Aquila which is not
     a Specified Entity, such Investment shall not exceed the aggregate amount
     of Investments made after the date hereof in Specified Entities pursuant to
     this subparagraph by Aquila or a Subsidiary of Aquila which is not an
     Specified Entity; and (z) such Investments (taken as a whole) shall not
     materially adversely affect the collateral value of Specified Entities
     taken as a whole (or materially adversely effect the rights and remedies of
     the Collateral Agent with respect thereto); and

                (g)     other Investments of the Borrower or any Subsidiary
     after the date hereof of not more than $1,000,000 in the aggregate.

          6.9   LIMITATION ON DIVIDENDS AND STOCK REPURCHASES. Subject to
Section 5.13(c), declare, or permit the Specified Company to declare, any
dividends other

                                       49
<Page>

than dividends paid in kind on any shares of any class of Capital Stock, or make
any payment on account of, or set apart assets for a sinking or other analogous
fund for, the purchase, redemption, retirement or other acquisition of any
shares of any class of Capital Stock of the Borrower, whether now or hereafter
outstanding, or make any other distribution in respect thereof, either directly
or indirectly, whether in cash or property or in obligations of the Borrower or
any of its Subsidiaries.

          6.10  LIMITATION ON INDEBTEDNESS OR MANDATORY REDEEMABLE STOCK.
Create, incur, issue, assume or suffer to exist, and shall not permit any
Subsidiary to create, incur, issue, assume or suffer to exist, any Indebtedness
or Mandatory Redeemable Stock (including any Indebtedness or Mandatory
Redeemable Stock of any of its Subsidiaries), except:

                (a)     Debt of the Borrower under this Agreement; and

                (b)     Indebtedness of the Borrower or any Subsidiary to the
     extent such Investment is permitted to exist under SECTION 6.8.

          6.11  LIMITATION ON SALES AND LEASEBACKS. Enter into any arrangement
with any Person providing for the leasing by the Borrower of any real or
personal property which has been or is to be sold or transferred by the Borrower
to such Person or to any other Person to whom funds have been or are to be
advanced by such Person on the security of such property or rental obligations
of the Borrower.

          6.12  PAYMENT AND OTHER RESTRICTIONS. Enter into or suffer to exist,
and shall not permit any Subsidiary to enter into or suffer to exist, any
agreement or other consensual encumbrance or restriction (i) which constitutes a
loss of control by the Borrower or a Subsidiary of a Subsidiary in which it has
such control as of the date hereof (for purposes of this clause (i), "CONTROL"
shall mean the ability to direct the daily operations of such entity, including
the ability to direct that such entity take the any action contemplated in
clause (ii) hereof) or (ii) which prohibits or limits the ability of the
Borrower or any of its Subsidiaries to create, incur, assume or suffer to exist
any Lien upon any of its property, assets or revenues, whether now owned or
hereafter acquired, or prohibits or limits the ability of the Borrower or any of
its Subsidiaries to make loans, payments or dividends to or investments in, or
to transfer assets to, the Borrower or any of its Subsidiaries, other than (a)
any such agreement, encumbrance or restriction contained in this Agreement and
the Collateral Documents or (b) pursuant to any agreement relating to a
Disposition of a Subsidiary (or specific assets) so long as the terms of such
Disposition comply with SECTION 6.7 (and such prohibition or restriction extends
solely over such Subsidiary (or specific assets) which is the subject of such
Disposition).

          6.13  LIMITATION ON BUSINESSES. Enter into, or permit such
Subsidiaries to enter into, any business other than directly or indirectly
holding of Investments in WA Gas Holdings Pty Ltd., Power Partnership Pty Ltd.,
and Energy Partnership Holdings Pty Ltd. (in connection therewith, neither the
Borrower nor any Subsidiary shall have liabilities other than its liabilities
under the Loan Documents, tax liabilities incurred in

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<Page>

the ordinary course of business, and administrative expenses incurred in the
ordinary course of business).

          6.14  LIMITATION ON CERTAIN AMENDMENTS. Amend, modify or change, or
consent to any amendment, modification or change to any of the terms relating to
the payment or prepayment of principal of or interest on, any such Indebtedness,
unless the amendment, modification or change would (i) not create or accelerate
any amortization thereof, (ii) not result in the maturity being earlier than six
months after the Maturity Date, or (iii) reduce the amount of any payment or
prepayment of principal thereof or reduce the rate or extend the date for
payment of interest thereon.

          6.15  LIMITATIONS ON SUBSIDIARIES' EQUITY INTERESTS. Permit any
Subsidiary (i) to issue any Capital Stock to any Person other than Aquila or any
Subsidiary of Aquila unless (1) no Event of Default then exists, (2) such
issuance is in an arm's length transactions for fair value, (3) (A) at least
eighty percent (80%) of the purchase price therefor is in cash or the Net Cash
Proceeds thereof constituting the cash portion of such purchase price is
sufficient to repay all Obligations outstanding in full (for purposes of this
clause (3), any Disposition which causes a Subsidiary of the Borrower to no
longer be a Subsidiary shall be deemed an issuance of all the Capital Stock of
such entity (with the Capital Stock retained by the Specified Entities being
included in the non-cash portion of such purchase price) and (B) such cash
portion of the purchase price shall be due and payable at (or prior to) the time
of such Disposition (provided that, in the case of an issuance of Capital Stock
of UtiliCorp Southern Cross Pty Ltd. (or any of its Subsidiaries) (so long as
the Specified Company and its other Subsidiaries have not made any additional
material Investments therein after the date hereof which remain outstanding at
such time), such cash portion may be paid at such later date as the Borrower may
agree with the purchaser thereof), and (4) the Net Cash Proceeds thereof are
applied to the prepayment of the credit facilities hereunder as provided in
SECTION 2.5, (ii) to issue any Capital Stock to Aquila or any Subsidiary of
Aquila which is not a Subsidiary of the Specified Company unless such Capital
Stock shall be pledged to the Collateral Agent pursuant to the Specified Company
Pledge Agreement (or another instrument or agreement in form and substance
satisfactory to the Collateral Agent) or (iii) other than Debt incurred pursuant
to SECTION 6.8(g), to incur any Debt owing to Aquila or any Subsidiary of Aquila
which is not a Subsidiary of the Specified Company in excess of $1,000,000 in
the aggregate for all such entities, unless such Debt shall be pledged to the
Collateral Agent pursuant to the Specified Company Pledge Agreement (or another
instrument or agreement in form and substance satisfactory to the Collateral
Agent).

          6.16  HEDGING ARRANGEMENTS; FORWARD SALE OR PURCHASE CONTRACTS. Enter
into, and shall not permit any Subsidiary to enter into, any interest rate
protection agreement, interest rate future, interest rate option, interest rate
swap, or other interest rate hedge or arrangement, or any other agreement or
arrangement designed to limit or eliminate the risk or exposure to fluctuations
in currency exchange rates, or fuel or other commodity prices, other than (i)
(A) any such agreement or arrangement entered into in the ordinary course of
business to hedge or mitigate risks to such which the Borrower or any Subsidiary
is exposed in the conduct of its business or the management of its

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<Page>

liabilities and (B) not for speculative purposes or (ii) in the case of
agreements or arrangements relating to interest rates, entered into to take
advantage of reduced interest rates by converting fixed rate obligations into
floating rate obligations; or (b) enter into, and shall not permit any
Subsidiary to enter into, any forward purchase and/or sale, or other forward
acquisition or disposition, of energy or transmission rights, or any energy
tolling transactions, as seller of tolling services.

          6.17  VOTING. Shall not consent or vote to permit (directly or through
any representative acting on its behalf) and shall vote against (and shall
direct any such representative to vote against) any action taken by WA Gas
Holdings Pty Ltd., Power Partnership Pty Ltd., Energy Partnership Holdings Pty
Ltd. or Energy Partnership Pty Ltd. which would not be permitted hereunder had
such entity been a Subsidiary of the Borrower, except to the extent necessary to
consummate a sale of the Australian Assets as contemplated and permitted hereby.

                          ARTICLE 7. EVENTS OF DEFAULT

          7.1   EVENTS OF DEFAULT. If any of the following events shall occur
and be continuing:

                (a)     The Borrower shall fail to pay any principal of any Loan
     when due in accordance with the terms hereof; or the Borrower shall fail to
     pay any interest on any Loan, or any fee or any other amount payable
     hereunder or any other Loan Document, within three (3) days after any such
     interest, fee or other amount becomes due in accordance with the terms
     thereof or hereof; or

                (b)     Any representation or warranty made or deemed made by
     any Credit Party herein or in any other Loan Document or in any
     certificate, document or other instrument delivered by any Credit Party
     under this Agreement or any other Loan Document shall prove to have been
     incorrect in any material respect on or as of the date made or deemed made;
     or

                (c)     The Borrower shall default in the observance or
     performance of any agreement contained in Article 6; or

                (d)     Any Credit Party shall default in the observance or
     performance of any other agreement contained in this Agreement or any other
     Loan Document, and such default shall continue unremedied for a period of
     thirty (30) days after the earlier of notice thereof being provided by the
     Administrative Agent or the Required Lenders or discovery thereof by a
     Responsible Officer of the Borrower; or

                (e)     Any Credit Party or any Subsidiary of the Borrower shall
     (A) default in any payment (regardless of amount) of principal of, premium,
     if any, or interest on any Debt having an aggregate principal amount in
     excess of, in the case of the Borrower and any of its Subsidiaries,
     $5,000,000 or, in the case of

                                       52
<Page>

     any other Credit Party, $40,000,000 (other than the Loans) beyond the grace
     period, if any, provided in the instrument or agreement under which such
     Debt was created or (B) default in the observance or performance of any
     other agreement or condition relating to any such Debt or contained in any
     instrument or agreement evidencing, securing or relating thereto, or any
     other event shall occur or condition exist, the effect of which default or
     other event or condition is to cause, or to permit the holder or holders of
     such Debt (or a trustee or agent on behalf of such holder or holders or
     beneficiary or beneficiaries) to cause, with the giving of notice, if
     required, such Debt to become due prior to its stated maturity; or

                (f)     (i) Any Credit Party or any Subsidiary of the Borrower
     shall commence any case, proceeding or other action (A) under any existing
     or future law of any jurisdiction, domestic or foreign, relating to
     bankruptcy, insolvency, reorganization or relief of debtors, seeking to
     have an order for relief entered with respect to it, or seeking to
     adjudicate it a bankrupt or insolvent, or seeking reorganization,
     arrangement, adjustment, winding-up, liquidation, dissolution, composition
     or other relief with respect to it or its debts, or (B) seeking appointment
     of a receiver, trustee, custodian, conservator or other similar official
     for it or for all or any substantial part of its assets, or any Credit
     Party or any such Subsidiary shall make a general assignment for the
     benefit of its creditors; or (ii) there shall be commenced against any
     Credit Party or any such Subsidiary any case, proceeding or other action of
     a nature referred to in clause (i) above which (A) results in the entry of
     an order for relief or any such adjudication or appointment or (B) remains
     undismissed, undischarged or un-bonded for a period of 60 days; or (iii)
     there shall be commenced against any Credit Party or any such Subsidiary
     any case, proceeding or other action seeking issuance of a warrant of
     attachment, execution, distrait or similar process against all or any
     substantial part of its assets which results in the entry of an order for
     any such relief which shall not have been vacated, discharged, or stayed or
     bonded pending appeal within 60 days from the entry thereof; or (iv) any
     Credit Party or any such Subsidiary shall take any action in furtherance
     of, or indicating its consent to, approval of, or acquiescence in, any of
     the acts set forth in clause (i), (ii), or (iii) above; or (v) any Credit
     Party or any such Subsidiary shall generally not, or shall be unable to, or
     shall admit in writing its inability to, pay its debts as they become due;
     or

                (g)     [Intentionally Omitted] or

                (h)     One or more judgments or decrees shall be entered
     against any Credit Party or any Subsidiary of the Borrower involving in the
     aggregate a liability (to the extent not covered by third-party insurance
     as to which the insurer has acknowledged coverage) of, in the case of the
     Borrower and any of its Subsidiaries, $5,000,000 or more, or, in the case
     of any other Credit Party, $40,000,000 or more, and sufficient judgments or
     decrees shall not have been vacated, discharged, stayed or bonded pending
     appeal within thirty (30) days from the entry thereof to reduce such amount
     to less than, in the case of the Borrower

                                       53
<Page>

     and any of its Subsidiaries, $5,000,000 or, in the case of any other Credit
     Party, $40,000,000; or

                (i)     (y) The Collateral Documents shall cease, for any
     reason, to be, or shall be asserted in writing by any Credit Party not to
     be, in full force and effect, other than pursuant to the terms thereof and
     hereof or (z) the Lien created thereby shall cease to be, or shall be
     asserted in writing by any Credit Party not to be, enforceable and of the
     same effect as to perfection and priority purported to be created thereby
     with respect to any significant portion of the collateral thereunder;

                (j)     Aquila or any of its Subsidiaries shall have made any
     prepayment, repurchase, redemption or defeasance of any Indebtedness, other
     than (A) regularly scheduled payments of principal, (B) refinancing
     (including any redemption or defeasance from proceeds of refinancing Debt)
     of any Indebtedness in compliance with the $430 Million Credit Agreement,
     (C) any prepayment, repurchase, redemption, or defeasance of any
     Indebtedness to the extent that the consideration therefor is property
     other than cash, cash equivalents (as determined in accordance with GAAP)
     or accounts receivable, (D) any prepayment, repurchase, redemption, or
     defeasance of the Senior Notes (other than pursuant to a refinancing in
     clause (B) above) or any buy-out of any tolling agreement to the extent
     that the consideration therefor is cash, cash equivalents (as determined in
     accordance with GAAP) or accounts receivable and does not exceed
     $125,000,000 in aggregate (with cash and cash equivalents being valued at
     100% and accounts receivable at 75% of the face amount thereof) and (E) any
     mandatory prepayment of Indebtedness under and in compliance with the $430
     Million Credit Agreement;

                (k)     Any Event of Default (as such term is defined in the
     $430 Million Credit Agreement, the Aquila Piatt County Power Guaranty or
     the MEP Flora Power Guaranty) shall occur; or

                (l)     A Change of Control shall occur;

          then, and in any such event, (A) if such event is an Event of Default
specified in clause (i) or (ii) of paragraph (f) above with respect to the
Borrower, automatically the Commitments shall immediately terminate, the Loans
hereunder (with accrued interest thereon) and all other amounts owing under this
Agreement, the Notes shall immediately become due and payable, and (B) if such
event is any other Event of Default, either or both of the following actions may
be taken: (i) with the consent of the Required Lenders, the Administrative Agent
may, by notice to the Borrower, declare the Commitments to be terminated
forthwith, whereupon the Commitments shall immediately terminate; and (ii) with
the consent of the Required Lenders, the Administrative Agent may, or upon the
request of the Required Lenders the Administrative Agent shall, by notice to the
Borrower, declare the Loans hereunder and the Notes to be due and payable
forthwith, whereupon the same shall immediately become due and payable. Except
as expressly provided above in this Section, presentment, demand, protest and
all other notices of any kind are hereby expressly

                                       54
<Page>

waived. Without limiting any other right or remedy, upon the occurrence and
during the continuation of an Event of Default, the Collateral Agent shall have
the right to request, and the Borrower shall promptly, and in any event within
thirty (30) days of such request, cause to be delivered, an appraisal of all or
any portion of collateral securing the credit facilities hereunder as the
Collateral Agent may designate, in form and substance and by an appraiser
acceptable to the Collateral Agent.

                              ARTICLE 8. THE AGENTS

          8.1   APPOINTMENT. Each Lender hereby irrevocably designates and
appoints CSFB as Administrative Agent and as Collateral Agent (for purposes of
this Article 8, collectively, the "AGENTS"), and to act as its agent under this
Agreement and the other Loan Documents. Each such Lender irrevocably authorizes
each Agent, to take such action on its behalf under the provisions of this
Agreement and the other Loan Documents and to exercise such powers and perform
such duties as are expressly delegated to each Agent by the terms of this
Agreement and the other Loan Documents, together with such other powers as are
reasonably incidental thereto. Each Lender further authorizes and directs each
Agent to execute and deliver releases (or similar agreements) to give effect to
the provisions of this Agreement and the other Loan Documents, including
specifically, without limitation, the provisions of SECTION 6.7 hereof.
Notwithstanding any provision to the contrary elsewhere in this Agreement, no
Agent shall have any duties or responsibilities, except those expressly set
forth herein or in therein, or any fiduciary relationship with any Lender, and
no implied covenants, functions, responsibilities, duties, obligations or
liabilities shall be read into this Agreement or any other Loan Document or
otherwise exist against either Agent. Without limiting the generality of the
foregoing, the Agents are hereby expressly authorized to execute any and all
documents (including releases) with respect to the Collateral and the rights of
the Secured Parties with respect thereto, as contemplated by and in accordance
with the provisions of this Agreement or any other Loan Document.

          8.2   DELEGATION OF DUTIES. Each Agent may execute any of its duties
under this Agreement and the other Loan Documents by or through agents or
attorneys-in-fact and shall be entitled to advice of counsel concerning all
matters pertaining to such duties. No Agent shall be responsible for the
negligence or misconduct of any agents or attorneys-in-fact selected by it with
reasonable care.

          8.3   EXCULPATORY PROVISIONS. No Agent nor any of its officers,
directors, employees, agents, attorneys-in-fact or Affiliates shall be (i)
liable for any action lawfully taken or omitted to be taken by it or such Person
under or in connection with this Agreement or any other Loan Document (except
for its own gross negligence or willful misconduct) or (ii) responsible in any
manner to any of the Lenders for any recitals, statements, representations or
warranties, made by the Borrower or any officer or any of them contained in this
Agreement or any other Loan Document or in any certificate, report, statement or
other document referred to or provided for in, or received by either Agent under
or in connection with, this Agreement or any other Loan Document or for the
value, validity, effectiveness, genuineness, enforceability or sufficiency of
this

                                       55
<Page>

Agreement or the Notes or any other Loan Document or for any failure of the
Borrower to perform its obligations hereunder or thereunder. No Agent shall be
under any obligation to any Lender to ascertain or to inquire as to the
observance or performance of any of the agreements contained in, or conditions
of, this Agreement or any other Loan Document, or to inspect the properties,
books or records of the Borrower or any Subsidiary.

          8.4   RELIANCE BY AGENTS. Each Agent shall be entitled to rely, and
shall be fully protected in relying, upon any Note, writing, resolution, notice,
consent, certificate, affidavit, letter, telecopy, telex or teletype message,
statement, order or other document or conversation believed by it to be genuine
and correct and to have been signed, sent or made by the proper Person or
Persons and upon advice and statements of legal counsel (including, without
limitation, counsel to the Borrower), independent accountants and other experts
selected by such Agent. Each Agent may deem and treat the payee of any Note or
any loan account in the Register as the owner thereof for all purposes unless a
written notice of assignment, negotiation or transfer thereof shall have been
filed with the Administrative Agent. Each Agent shall be fully justified in
failing or refusing to take any action under this Agreement or any other Loan
Document unless it shall first receive such advice or concurrence of the
Required Lenders as it deems appropriate or it shall first be indemnified to its
satisfaction by the Lenders against any and all liability and expense which may
be incurred by it by reason of taking or continuing to take any such action.
Each Agent shall in all cases be fully protected in acting, or in refraining
from acting, under this Agreement, the Notes and the other Loan Documents in
accordance with a request of the Required Lenders, and such request and any
action taken or failure to act pursuant thereto shall be binding upon all the
Lenders and all future holders of the amounts owing hereunder.

          8.5   NOTICE OF DEFAULT. No Agent shall be deemed to have knowledge or
notice of the occurrence of any Default or Event of Default unless such Agent
has received notice from a Lender or the Borrower referring to this Agreement,
describing such Default or Event of Default and stating that such notice is a
"notice of default". In the event that the Administrative Agent receives such a
notice, the Administrative Agent shall give notice thereof to the Lenders. Each
Agent shall take such action with respect to such Default or Event of Default as
shall be reasonably directed by the Required Lenders; PROVIDED that unless and
until such Agent shall have received such directions, such Agent may (but shall
not be obligated to) take such action, or refrain from taking such action, with
respect to such Default or Event of Default as it shall deem advisable in the
best interests of the Lenders.

          8.6   NON-RELIANCE ON AGENTS AND OTHER LENDERS. Each Lender expressly
acknowledges that no Agent nor any of its officers, directors, employees,
agents, attorneys-in-fact or Affiliates has made any representations or
warranties to it and that no act by either Agent hereafter taken, including any
review of the affairs of the Borrower, shall be deemed to constitute any
representation or warranty by either Agent to any Lender. Each Lender represents
to each Agent that it has, independently and without reliance upon either Agent
or any other Lender, and based on such documents and information as it has
deemed appropriate, made its own appraisal of and investigation

                                       56
<Page>

into the business, operations, property, financial and other condition and
creditworthiness of the Borrower and made its own decision to make its Loans
hereunder and enter into this Agreement. Each Lender also represents that it
will, independently and without reliance upon either Agent or any other Lender,
and based on such documents and information as it shall deem appropriate at the
time, continue to make its own credit analysis, appraisals and decisions in
taking or not taking action under this Agreement and the other Loan Documents,
and to make such investigation as it deems necessary to inform itself as to the
business, operations, property, financial and other condition and
creditworthiness of the Borrower. Except for notices, reports and other
documents expressly required to be furnished to the Lenders by the
Administrative Agent hereunder or furnished to the Administrative Agent for the
account of, or with a counterpart or copy for, each Lender, no Agent shall have
any duty or responsibility to provide any Lender with any credit or other
information concerning the business, operations, property, condition (financial
or otherwise), prospects or creditworthiness of the Borrower or any of its
Subsidiaries which may come into the possession of either Agent or any of its
officers, directors, employees, agents, attorneys-in-fact or Affiliates.

          8.7   INDEMNIFICATION. The Lenders agree to indemnify each Agent in
its capacity as such (to the extent not reimbursed by the Borrower and without
limiting the obligation of the Borrower to do so) and their respective
directors, officers, employees and agents, ratably according to their respective
Commitment Percentages in effect on the date on which indemnification is sought
under this Section (or, if indemnification is sought after the date upon which
the Commitments shall have terminated and the Loans shall have been paid in
full, ratably in accordance with their Commitment Percentages immediately prior
to such date), from and against any and all liabilities, obligations, losses,
damages, penalties, actions, judgments, suits, costs, expenses or disbursements
of any kind whatsoever which may at any time (including, without limitation, at
any time following the payment of all amounts owing hereunder) be imposed on,
incurred by or asserted against such Agent in any way relating to or arising out
of this Agreement, any of the other Loan Documents or any documents contemplated
by or referred to herein or therein or the transactions contemplated hereby or
thereby or any action taken or omitted by such Agent under or in connection with
any of the foregoing; PROVIDED that no Lender shall be liable for the payment of
any portion of such liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs, expenses or disbursements resulting solely
from such Agent's gross negligence, willful misconduct or bad faith. The
agreements in this Section shall survive the payment of the Obligations
hereunder.

          8.8   AGENT IN ITS INDIVIDUAL CAPACITY. Each Agent and its Affiliates
may make loans to, accept deposits from and generally engage in any kind of
business with the Borrower or any Subsidiary as though such Agent were not an
Agent hereunder and under the other Loan Documents. With respect to Loans made
or renewed by it and any Note issued to it, each Agent shall have the same
rights and powers under this Agreement and the other Loan Documents as any
Lender and may exercise the same as though it were not an Agent, and the terms
"Lender" and "Lenders" shall include each Agent in its individual capacity.

                                       57
<Page>

          8.9   SUCCESSOR ADMINISTRATIVE AGENT. The Administrative Agent may
resign as Administrative Agent upon ten days' notice to the Lenders and the
Borrower. If the Administrative Agent shall resign as Administrative Agent under
this Agreement and the other Loan Documents, then the Required Lenders shall,
with the consent of the Borrower (which consent shall not be unreasonably
withheld and shall not be required if an Event of Default shall have occurred
that is continuing) appoint a successor administrative agent, whereupon such
successor Administrative Agent shall succeed to the rights, powers and duties of
the Administrative Agent, and the term "Administrative Agent" shall mean such
successor Administrative Agent effective upon such appointment and approval, and
the former Administrative Agent's rights, powers and duties as Administrative
Agent shall be terminated, without any other or further act or deed on the part
of such former Administrative Agent or any of the parties to this Agreement or
any holders of any amounts payable hereunder. After any retiring or terminated
Administrative Agent's resignation or termination, as the case may be, as
Administrative Agent, the provisions of this Section shall inure to its benefit
as to any actions taken or omitted to be taken by it while it was Administrative
Agent under this Agreement and the other Loan Documents.

                            ARTICLE 9. MISCELLANEOUS

          9.1   AMENDMENTS AND WAIVERS. Neither this Agreement or any other Loan
Document, nor any terms hereof or thereof may be amended, supplemented or
modified except in accordance with the provisions of this Section. The Required
Lenders may, or, with the written consent of the Required Lenders, the
Administrative Agent may, from time to time, (a) enter into with the Borrower
written amendments, supplements or modifications hereto for the purpose of
adding any provisions to this Agreement or changing in any manner the rights of
the Lenders or of the Borrower hereunder, (b) enter into with the Borrower
written amendments, supplements or modifications to the other Loan Documents for
the purpose of adding provisions to such other Loan Documents or changing in any
manner the rights of the Lenders or the Borrower thereunder or (c) waive, on
such terms and conditions as the Required Lenders or the Administrative Agent,
as the case may be, may specify in such instrument, any of the requirements of
this Agreement or the other Loan Documents or any Default or Event of Default
and its consequences; PROVIDED that no such waiver and no such amendment,
supplement or modification (i) shall reduce the principal amount or extend the
scheduled date of maturity of the Loan of any Lender or of any installment
thereof, or reduce the stated rate of any interest or fee payable hereunder or
extend the scheduled date of any payment thereof or increase the amount or
extend the expiration date of any Lender's Commitment, in each case, without the
consent of such Lender, (ii) shall amend, modify or waive any provision of this
Section, SECTION 2.11 in a manner that would alter the pro rata sharing payments
required by SECTION 2.11, or vary any provision of this Agreement or any other
Loan Document which specifically by its terms requires the approval or consent
of all the Lenders or reduce the percentage specified in the definition of
Required Lenders, or consent to the assignment or transfer by the Borrower of
any of its rights and obligations under this Agreement and the other Loan
Documents, or release any material

                                       58
<Page>

portion of the Collateral (other than in accordance with the terms of the Loan
Documents), in each case, without the written consent of all the Lenders, or
(iii) shall amend, modify or waive any provision of ARTICLE 8 or any other
provision in any Loan Document governing the rights or obligations of the
Administrative Agent or the Collateral Agent without the written consent of the
then Administrative Agent or the Collateral Agent, as applicable. Any such
waiver and any such amendment, supplement or modification shall apply equally to
each of the Lenders and shall be binding upon the Borrower, the Lenders, the
Administrative Agent, the Collateral Agent and all future holders of the Loans.
In the case of any waiver, the Borrower, the Lenders and the Administrative
Agent shall be restored to their former position and rights hereunder and under
any other Loan Documents, and any Default or Event of Default waived shall be
deemed to be cured and not continuing, but no such waiver shall extend to any
subsequent or other Default or Event of Default or impair any right consequent
thereon.

          9.2   NOTICE. All notices, requests and demands to or upon the
respective parties hereto to be effective shall be in writing (including by
telecopy), and, unless otherwise expressly provided herein, shall be deemed to
have been duly given or made when delivered by hand, or, in the case of notice
by mail, when received, or, in the case of telecopy notice, when received,
addressed as follows in the case of the Borrower or the Administrative Agent,
and as set forth in Schedule I in the case of any Lender, or to such other
address as may be hereafter notified by the respective parties hereto and any
future holders of the amounts payable hereunder:

Borrower:               UtiliCorp Australia, Inc.
                        c/o Aquila, Inc.
                        20 West Ninth Street
                        Kansas City, Missouri 64105
                        Attention:  Treasurer
                        Telecopy No. (816) 467-3591

Administrative Agent:   Credit Suisse First Boston
                        Eleven Madison Avenue
                        New York, New York 10010-3629
                        Attention:  Agency Department Manager
                        Telecopy No.: (212) 325-8304

          provided that any notice, request or demand to or upon the
Administrative Agent made under this Agreement may be made by telephone, with
prompt written confirmation thereafter of such telephonic notice, and the
Administrative Agent shall be entitled to rely on such telephonic notice;
PROVIDED, FURTHER, that any notice, request or demand to or upon the
Administrative Agent and the Lenders pursuant to SECTION 2.3, SECTION 2.5, or
SECTION 2.6, shall not be effective until received.

          9.3   NO WAIVER; CUMULATIVE REMEDIES. No failure to exercise and no
delay in exercising, on the part of the Administrative Agent or any Lender, any
right, remedy, power or privilege hereunder or under the other Loan Documents
shall operate as a waiver thereof, nor shall any single or partial exercise of
any right, remedy, power or

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<Page>

privilege hereunder preclude any other or further exercise thereof or the
exercise of any other right, remedy, power or privilege. The rights, remedies,
powers and privileges herein provided are cumulative and not exclusive of any
rights, remedies, powers and privileges provided by law.

          9.4   SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations
and warranties made hereunder, in the other Loan Documents and in any document,
certificate or statement delivered pursuant hereto or in connection herewith
shall survive the execution and delivery of this Agreement and the Notes and the
making of the Loans hereunder.

          9.5   PAYMENT OF EXPENSES AND TAXES; INDEMNIFICATION. The Borrower
agrees (a) to pay or reimburse the Arranger, the Administrative Agent and the
Collateral Agent for all its reasonable out-of-pocket costs and expenses
incurred in connection with the arrangement and syndication of the credit
facilities provided for herein, any due diligence related hereto (including
without limitation any evaluation of collateral), the development, preparation
and execution of, and any amendment, supplement or modification to, this
Agreement, the Notes and the other Loan Documents and any other documents
prepared in connection herewith or therewith, and the consummation and
administration of the transactions contemplated hereby and thereby, including,
without limitation, the reasonable fees and disbursements of external counsel to
the Arranger, the Administrative Agent and the Collateral Agent, (b) to pay or
reimburse the Administrative Agent, the Collateral Agent and each Lender for all
its costs and expenses incurred in connection with the enforcement or
preservation of any rights under this Agreement, the Notes, the other Loan
Documents and any such other documents, including, without limitation, the
reasonable fees and disbursements of counsel (including allocated costs of
internal counsel) to the Administrative Agent, the Collateral Agent and each
Lender, (d) to pay, and indemnify and hold harmless the Administrative Agent,
the Collateral Agent, each Lender from, any and all present or future stamp,
documentary or excise taxes or similar charges, any and all recording and filing
fees, and any and all liabilities with respect thereto, which may be payable or
determined to be payable in connection with the execution and delivery of, or
consummation or administration of any of the transactions contemplated by, or
payment under, or any amendment, supplement or modification of, or any waiver or
consent under or in respect of, this Agreement, the Notes, the other Loan
Documents and any such other documents, and (e) to pay, and indemnify and hold
harmless the Administrative Agent, the Collateral Agent, each Lender (including
each of their respective parents, subsidiaries, officers, directors, employees,
agents, trustees and attorneys-in-fact) (each such Person being called an
"INDEMNITEE") from and against, any and all claims, demands, liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs,
settlements, expenses or disbursements of whatever kind or nature arising from,
in connection with or with respect to (i) the execution or delivery of any Loan
Document or any agreement or instrument contemplated hereby, the performance by
the parties to the Loan Documents of their respective obligations thereunder or
the consummation of the Transactions or any other transactions contemplated
thereby, (ii) any Loan or the use of the proceeds therefrom, (iii) any actual or
alleged presence or release of Materials of Environmental Concern on or from any
property owned or operated by the Borrower or any of its Subsidiaries, or

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any Environmental Liability related in any way to the Borrower or any of its
Subsidiaries, or (iv) any actual or prospective claim, litigation, investigation
or proceeding relating to any of the foregoing, whether based on contract, tort
or any other theory and regardless of whether any Indemnitee is a party thereto
(all the foregoing in this clause (e), collectively, the "INDEMNIFIED
LIABILITIES"); PROVIDED that such indemnity shall not, as to any Indemnitee, be
available to the extent that such indemnified liabilities are determined by a
court of competent jurisdiction by final and nonappealable judgment to have
resulted from the gross negligence, willful misconduct or bad faith of such
Indemnitee (or such Indemnitee's parent, subsidiaries, officers, directors,
employees, agents, trustees or attorneys-in-fact). To the extent permitted by
applicable law, each party hereto agrees not to assert, and hereby waives, any
claim against any Indemnitee, on any theory of liability, for special, indirect,
consequential or punitive damages (as opposed to direct or actual damages)
arising out of, in connection with, or as a result of, this Agreement, any other
Loan Document or any agreement or instrument contemplated hereby or thereby, the
Transactions, any Loan or the use of the proceeds thereof. The agreements in
this SECTION 9.5 supercede the reimbursement and indemnification provisions in
the Commitment Letter, and shall survive repayment of the Obligations hereunder.

          9.6   SUCCESSORS AND ASSIGNS; PARTICIPATIONS AND ASSIGNMENTS. (a) This
     Agreement shall be binding upon and inure to the benefit of the Borrower,
     the Lenders, the Administrative Agent, all future holders of the amounts
     owing hereunder and their respective successors and assigns, except that
     the Borrower may not assign or transfer any of its rights or obligations
     under this Agreement without the prior written consent of each Lender.

                (b)     Any Lender may, in the ordinary course of its commercial
     banking business and in accordance with applicable law, at any time sell to
     one or more banks or other entities ("PARTICIPANTS") participating
     interests in any Loan owing to such Lender, any Note held by such Lender,
     any Commitment and any other interest hereunder and under the other Loan
     Documents without notice to or the consent of the Borrower or the
     Administrative Agent. In the event of any such sale by a Lender of a
     participating interest to a Participant, such Lender's obligations under
     this Agreement to the other parties to this Agreement shall remain
     unchanged, such Lender shall remain solely responsible for the performance
     thereof, such Lender shall remain the holder of any such Note for all
     purposes under this Agreement and the other Loan Documents, the Borrower
     and the Administrative Agent shall continue to deal solely and directly
     with such Lender in connection with such Lender's rights and obligations
     under this Agreement and the other Loan Documents and such Lender shall
     retain the sole right to enforce the obligations of the Borrower relating
     to the Loans and other obligations owing to such Lender and to approve any
     amendment, modification, or waiver of any provision of this Agreement
     (other than amendments, modifications, or waivers (i) decreasing the amount
     of principal of or the rate at which interest is payable on such Loans or
     Notes, (ii) extending any scheduled principal payment date or date fixed
     for the payment of interest on such Loans or Notes, (iii) extending its
     Commitment, (iv) permitting any assignment or transfer of any of the
     Borrower's rights or obligations under this Agreement) or (v)

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     releasing all or substantially all of the Collateral. The Borrower agrees
     that if amounts outstanding under this Agreement and the Notes are due or
     unpaid, or shall have been declared or shall have become due and payable
     upon the occurrence of an Event of Default, each Participant shall be
     deemed to have the right of setoff in respect of its participating interest
     in amounts owing under this Agreement and any Note to the same extent as if
     the amount of its participating interest were owing directly to it as a
     Lender under this Agreement or any Note; PROVIDED that, in purchasing such
     participating interest, such Participant shall be deemed to have agreed to
     share with the Lenders the proceeds thereof as provided in SECTION 9.7(a)
     as fully as if it were a Lender hereunder. The Borrower also agrees that
     each Participant shall be entitled to the benefits of SECTION 2.13, SECTION
     2.14 and SECTION 2.15 with respect to its participation in the Commitments
     and the Loans outstanding from time to time as if it were a Lender;
     PROVIDED that, in the case of SECTION 2.14, such Participant shall have
     complied with the requirements of said Section; and PROVIDED, FURTHER, that
     no Participant shall be entitled to receive any greater amount pursuant to
     any such Section than the transferor Lender would have been entitled to
     receive in respect of the amount of the participation transferred by such
     transferor Lender to such Participant had no such transfer occurred.

                (c)     Any Lender, in the ordinary course of its commercial
     banking business and in accordance with applicable law, at any time and
     from time to time may assign to any Lender or any affiliate or Approved
     Fund thereof, or, with the consent of the Administrative Agent (which
     consent shall not be unreasonably withheld), to an additional bank,
     financial institution, fund or commingled investment vehicle, or other
     Person (an "ASSIGNEE") all or any pro rata portion of its rights and
     obligations under this Agreement and the Notes pursuant to an assignment
     agreement, substantially in the form of EXHIBIT C (or such other form
     approved by the Administrative Agent's in its sole discretion) (an
     "ASSIGNMENT AND ASSUMPTION AGREEMENT"), executed by such Assignee, such
     assigning Lender and, in the case of an Assignee that is not then a Lender
     or an affiliate or Approved Fund thereof, by the Administrative Agent and
     delivered to the Administrative Agent for its acceptance and recording in
     the Register (such Assignment and Assumption Agreement to be electronically
     executed and delivered to the Administrative Agent via an electronic
     settlement system then acceptable to the Administrative Agent (which
     initially shall be ClearPar, LLC) or, if no such system is then acceptable
     to the Administrative Agent, by manual execution and delivery); provided
     that (i) any such assignment must be (A) a pro rata assignment to such
     assignee with respect to all of its rights and interests as a Lender
     hereunder and (B) a pro rata assignment to such assignee with respect to
     all of its rights and interests as a lender under the $430 Million Credit
     Agreement, (ii) in a minimum amount equal to the lesser of $1,000,000 and
     the aggregate Commitments and outstanding Loans of such Lender then in
     effect unless (y) otherwise agreed to by each of the Borrower and the
     Administrative Agent or (z) such assignment is to a Lender, an Affiliate of
     a Lender or an Approved Fund of a Lender, and (iii) after giving effect to
     any such assignment, such Lender shall have either (x) sold all its rights
     and obligations hereunder and under the Notes or

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     (y) retained at least $1,000,000 of the aggregate Commitments and
     outstanding Loans. Upon such execution, delivery, acceptance and recording,
     from and after the effective date determined pursuant to such Assignment
     and Assumption Agreement, (1) the Assignee thereunder shall be a party
     hereto and, to the extent provided in such Assignment and Assumption
     Agreement, have the rights and obligations of a Lender hereunder with a
     Commitment and Loans as set forth therein and (2) the assigning Lender
     thereunder, to the extent provided in such Assignment and Assumption
     Agreement, shall be released from its obligations under this Agreement
     (and, in the case of an Assignment and Assumption Agreement covering all or
     the remaining portion of an assigning Lender's rights and obligations under
     this Agreement, such assigning Lender shall cease to be a party hereto;
     provided that the provisions of SECTION 2.13, SECTION 2.14, SECTION 2.15
     and SECTION 9.5 shall continue to benefit such assigning Lender to the
     extent required by such Sections). On or prior to the effective date
     determined pursuant to such Assignment and Assumption Agreement, (i)
     appropriate entries shall be made in the accounts of the assigning Lender
     and the Register evidencing such assignment and releasing the Borrower from
     any and all obligations to the assigning Lender in respect of the assigned
     Loan or Loans and (ii) appropriate entries evidencing the assigned Loan or
     Loans shall be made in the accounts of the Assignee and the Register as
     required by SECTION 9.6(d). In the event that any Notes have been issued in
     respect of the assigned Loan or Loans, such Notes shall be marked
     "CANCELLED" and surrendered by the assigning Lender to the Administrative
     Agent for return to the Borrower.

                (d)     The Administrative Agent, acting for this purpose as an
     agent of the Borrower, shall maintain, at its address referred to in
     SECTION 9.2, a copy of each Assignment and Assumption Agreement delivered
     to it and a register (the "REGISTER") for the recordation of the names and
     addresses of the Lenders and the Commitment of, and principal amount of the
     Loans owing to each Lender from time to time. To the extent permitted by
     applicable law, the entries in the Register shall be conclusive, in the
     absence of manifest error, and the Borrower and the Administrative Agent
     may (and, in the case of any Loan not evidenced by a Note, shall) treat
     each Person whose name is recorded in the Register as the owner of the Loan
     recorded therein as the owner thereof for all purposes of this Agreement
     and the other Loan Documents, notwithstanding notice to the contrary. Any
     assignment of any Loan or other obligation hereunder not evidenced by a
     Note shall be effective only upon appropriate entries with respect thereto
     being made in the Register. The Register shall be available for inspection
     by the Borrower at any reasonable time and from time to time upon
     reasonable prior notice.

                (e)     Upon its receipt of an Assignment and Assumption
     Agreement executed by the assigning Lender and an Assignee (and, in the
     case of an Assignee that is not then a Lender or an affiliate thereof, by
     the Administrative Agent ) together with payment by the assigning Lender or
     by the Assignee to the Administrative Agent of a registration and
     processing fee of $3,500, the Administrative Agent shall promptly accept
     such Assignment and Assumption

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     Agreement and, on the effective date determined pursuant thereto, shall
     record the information contained therein in the Register and give notice of
     such acceptance and recordation to the Borrower.

                (f)     Notwithstanding anything to the contrary contained
     herein, any Lender (a "GRANTING LENDER") may grant to a special purpose
     funding vehicle (a "SPC"), identified as such in writing from time to time
     by the Granting Lender to the Administrative Agent and the Borrower, the
     option to provide to the Borrower all or any part of any Loan that such
     Granting Lender would otherwise be obligated to make to the Borrower
     pursuant to this Agreement; PROVIDED that (i) nothing herein shall
     constitute a commitment by any SPC to make any advance hereunder, (ii) if
     an SPC elects not to exercise such option or otherwise fails to provide all
     or any part of such Loan, the Granting Lender shall be obligated to make
     such Loan pursuant to the terms hereof. The making of a Loan by an SPC
     hereunder shall utilize the applicable Commitment of the Granting Lender to
     the same extent, and as if, such Loan were made by such Granting Lender.
     Each party hereto hereby agrees that no SPC shall be liable for any
     indemnity or similar payment obligation under this Agreement (all liability
     for which shall remain with the Granting Lender). In furtherance of the
     foregoing, each party hereto hereby agrees (which agreement shall survive
     the termination of this Agreement) that, prior to the date that is one year
     and one day after the payment in full of all outstanding commercial paper
     or other senior indebtedness of any SPC, it will not institute against, or
     join any other person in instituting against, such SPC any bankruptcy,
     reorganization, arrangement, insolvency or liquidation proceedings under
     the laws of the United States or any State thereof. In addition,
     notwithstanding anything to the contrary contained in this SECTION 9.6(f),
     any SPC may (i) with notice to, but without the prior written consent of,
     the Borrower and the Administrative Agent and without paying any processing
     fee therefor, assign all or a portion of its interests in any Loans to the
     Granting Lender or to any financial institutions (consented to by the
     Borrower and the Administrative Agent) providing liquidity and/or credit
     support to or for the account of such SPC to support the funding or
     maintenance of Loans and (ii) disclose on a confidential basis any
     non-public information relating to its Loans to any rating agency,
     commercial paper dealer or provider of any surety, guarantee or credit or
     liquidity enhancement to such SPC. This section may not be amended without
     the written consent of the SPC.

                (g)     The Borrower authorizes the Lenders to disclose to any
     Participant or Assignee (each, a "TRANSFEREE") and any prospective
     Transferee, any and all financial information in the Lenders' possession
     concerning the Borrower and its respective Affiliates which has been
     delivered to the Administrative Agent or the Lenders by or on behalf of the
     Borrower pursuant to this Agreement or which has been delivered to the
     Administrative Agent or the Lenders by or on behalf of the Borrower in
     connection with the Lender's credit evaluation of the Borrower and its
     respective Affiliates prior to becoming a party to this Agreement; provided
     that each such Transferee and prospective Transferee agrees in writing to
     be bound by the provisions of SECTION 9.8.

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                (h)     Nothing herein shall prohibit any Lender from pledging
     or assigning any Note to any Federal Reserve Bank in accordance with
     applicable law. In the case of any Lender that is a fund that invests in
     bank loans, such Lender may, without the consent of the Borrower or
     Administrative Agent, assign or pledge all or any portion of its rights
     under this Agreement, including the Loans and Notes or any other instrument
     evidencing its rights as a Lender under this Agreement, to any holder of,
     trustee for, or any other representative of holders of, obligations owed or
     securities issued, by such fund, as security for such obligations or
     securities; provided that any foreclosure or similar action by such trustee
     or representative shall be subject to the provisions of this SECTION 9.6
     concerning assignments.

          9.7   ADJUSTMENTS; SETOFF. (a) If any Lender (a "BENEFITED LENDER")
     shall at any time receive any payment of all or part of its Loans, or
     interest thereon, or receive any collateral in respect thereof (whether
     voluntarily or involuntarily, by setoff, pursuant to events or proceedings
     of the nature referred to in SECTION 7.1(f), or otherwise), in a greater
     proportion than any such payment to or collateral received by any other
     Lender, if any, in respect of such other Lender's Loans, or interest
     thereon, such Benefited Lender shall purchase for cash from the other
     Lenders a participating interest in such portion of each such other
     Lender's Loans, or shall provide such other Lenders with the benefits of
     any such collateral, or the proceeds thereof, as shall be necessary to
     cause such Benefited Lender to share the excess payment or benefits of such
     collateral or proceeds ratably with each of the Lenders; PROVIDED that if
     all or any portion of such excess payment or benefits is thereafter
     recovered from such Benefited Lender, such purchase shall be rescinded, and
     the purchase price and benefits returned, to the extent of such recovery,
     but without interest.

                (b)     Upon the occurrence and during the continuance of an
     Event of Default, in addition to any rights and remedies of the Lenders
     provided by law, each Lender shall have the right, (without prior notice to
     the Borrower, any such notice being expressly waived by the Borrower to the
     extent permitted by applicable law), upon any amount becoming due and
     payable by the Borrower hereunder or under the Notes (whether at the stated
     maturity, by acceleration or otherwise), to setoff and appropriate and
     apply against such amount any and all deposits (general or special, time or
     demand, provisional or final), in any currency, and any other credits,
     indebtedness or claims, in any currency, in each case whether direct or
     indirect, absolute or contingent, matured or unmatured, at any time held or
     owing by such Lender or any branch or agency thereof to or for the credit
     or the account of the Borrower. Each Lender agrees promptly to notify the
     Borrower and the Administrative Agent after any such setoff and application
     made by such Lender; PROVIDED that the failure to give such notice shall
     not affect the validity of such setoff and application.

          9.8   CONFIDENTIALITY. Each Lender agrees to exercise all reasonable
efforts (consistent with its customary methods for keeping information
confidential) to keep any information delivered or made available by the
Borrower (such information,

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"CONFIDENTIAL INFORMATION") confidential from anyone other than persons employed
or retained by such Lender who are or are expected to become engaged in
evaluating, approving, structuring or administering the Loans; PROVIDED that
nothing herein shall prevent any Lender from disclosing such information (a) to
any Affiliate of such Lender or to any other Lender, (b) upon the order of any
court or administrative agency, (c) upon the request or demand of any regulatory
agency or authority having jurisdiction over such Lender, (d) that has been
publicly disclosed, (e) in connection with any litigation relating to the Loans,
this Agreement or any transaction contemplated hereby to which any Lender or the
Administrative Agent may be a party, (f) to the extent reasonably required in
connection with the exercise of any remedy hereunder, (g) to such Lender's legal
counsel and independent auditors, and (h) to any actual or proposed participant
or assignee of all or any part of its Loans hereunder, if such other Person,
prior to such disclosure, agrees, in writing, for the benefit of the Borrower to
comply with the provisions of this SECTION 9.8. Notwithstanding anything herein
to the contrary, Confidential Information shall not include, and each Lender and
each Agent (and each employee, representative or other agent of each Lender and
each Agent) may disclose to any and all persons without limitation of any kind,
any information with respect to the "tax treatment" and "tax structure" (in each
case, within the meaning of Treasury Regulation Section 1.6011-4) of the
transactions contemplated hereby and all materials of any kind (including
opinions or other tax analyses) that are provided to such Lender, Agent,
employee, representative or other agent relating to such tax treatment and tax
structure; provided that with respect to any document or similar item that in
either case contains information concerning the tax treatment or tax structure
of the transaction as well as other information, this sentence shall only apply
to such portions of the document or similar item that relate to the tax
treatment or tax structure of the Loans and the transactions contemplated
hereby.

          9.9   EFFECTIVENESS. This Agreement shall become effective on the date
when counterparts hereof executed on behalf of the Borrower, the Administrative
Agent, each Lender shall have been received by the Administrative Agent and
notice thereof shall have been given by the Administrative Agent to the
Borrower.

          9.10  COUNTERPARTS. This Agreement may be executed by one or more of
the parties to this Agreement on any number of separate counterparts (including
by telecopy), and all said counterparts taken together shall be deemed to
constitute one and the same instrument. A set of the copies of this Agreement
signed by all the parties shall be lodged with each of the Borrower and the
Administrative Agent.

          9.11  SEVERABILITY. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

          9.12  INTEGRATION. This Agreement and the other Loan Documents
represent the agreement of the Borrower, the Administrative Agent, the Lenders
with respect to the subject matter hereof and thereof, and there are no
promises, undertakings,

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<Page>

representations or warranties by the Administrative Agent or any Lender relative
to subject matter hereof or thereof not expressly set forth or referred to
herein or in the other Loan Documents. This Agreement and the other Loan
Documents shall supercede the Commitment Letter in its entirety.

          9.13  GOVERNING LAW. THIS AGREEMENT AND THE NOTES AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES UNDER THIS AGREEMENT AND THE NOTES SHALL BE GOVERNED
BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF
NEW YORK WITHOUT REGARD TO THE PRINCIPLES OF CONFLICT OF LAWS THEREOF OTHER THAN
SECTION 5-1401 OF THE GENERAL OBLIGATIONS LAW OF THE STATE OF NEW YORK.

          9.14  SUBMISSION TO JURISDICTION; WAIVERS. The Borrower hereby
irrevocably and unconditionally:

                (a)     submits for itself and its property in any legal action
     or proceeding relating to this Agreement and the other Loan Documents to
     which it is a party, or for recognition and enforcement of any judgment in
     respect thereof, to the non-exclusive general jurisdiction of the Courts of
     the State of New York, the courts of the United States of America for the
     Southern District of New York, and appellate courts from any thereof;

                (b)     consents that any such action or proceeding may be
     brought in such courts and waives any objection that it may now or
     hereafter have to the venue of any such action or proceeding in any such
     court or that such action or proceeding was brought in an inconvenient
     court and agrees not to plead or claim the same;

                (c)     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 Borrower, as the case may be, at its address set forth in
     SECTION 9.2 or at such other address of which the Administrative Agent
     shall have been notified pursuant thereto;

                (d)     agrees that nothing contained 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; and

                (e)     waives, to the maximum extent not prohibited by law, any
     right it may have to claim or recover in any legal action or proceeding
     referred to in this Section any special, exemplary, punitive or
     consequential damages.

          9.15  ACKNOWLEDGMENTS. The Borrower hereby acknowledges that:

                (a)     Neither the Administrative Agent nor Lender has any
     fiduciary relationship with or duty to the Borrower arising out of or in
     connection with this Agreement or any of the other Loan Documents, and the
     relationship

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     between the Administrative Agent and the Lenders, on the one hand, and the
     Borrower, on the other hand, in connection herewith or therewith is solely
     that of creditor and debtor; and

                (b)     no joint venture is created hereby or by the other Loan
     Documents or otherwise exists by virtue of the transactions contemplated
     hereby between the Administrative Agent, the Lenders and the Borrower.

          9.16  WAIVERS OF JURY TRIAL. THE BORROWER, THE ADMINISTRATIVE AGENT
AND THE LENDERS HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVE TRIAL BY JURY IN
ANY LEGAL ACTION OR PROCEEDING RELATING TO THIS AGREEMENT OR THE NOTES OR ANY
OTHER LOAN DOCUMENT AND FOR ANY COUNTERCLAIM THEREIN.

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          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed and delivered by their proper and duly authorized officers as
of the day and year first above written.

                                       BORROWER:

                                       UTILICORP AUSTRALIA, INC.

                                       By: /s/ Randy Miller
                                           -------------------------------------
                                           Name: Randy Miller
                                           Title: Treasurer

                                       ADMINISTRATIVE AGENT:

                                       CREDIT SUISSE FIRST BOSTON,
                                         CAYMAN ISLANDS BRANCH

                                       By: /s/ S. William Fox
                                           -------------------------------------
                                           Name: S. William Fox
                                           Title: Director

                                       By: /s/ Cassandra Droogan
                                           -------------------------------------
                                           Name: Cassandra Droogan
                                           Title: Associate

                                       ISSUING BANK:

                                       CREDIT SUISSE FIRST BOSTON

                                       By: /s/ S. William Fox
                                           -------------------------------------
                                           Name: S. William Fox
                                           Title: Director

                                       By: /s/ Cassandra Droogan
                                           -------------------------------------
                                           Name: Cassandra Droogan
                                           Title: Associate

                                       69<Page>

                                                               EXHIBIT 10(a)(26)

                               RETENTION AGREEMENT

     This RETENTION AGREEMENT (the "AGREEMENT") is entered into this 13th day of
August, 2002 by and between Aquila, Inc. ("AQUILA") and Leslie J. Parrette, Jr.
("YOU").

     WHEREAS, Aquila desires to retain Your services under the terms and
conditions of this Agreement; and

     WHEREAS, You desire to continue your employment with Aquila under the terms
and conditions of this Agreement.

     NOW THEREFORE, in consideration of the mutual undertakings hereinafter set
forth, and for other good and valuable consideration, which each party hereby
acknowledges, it is agreed as follows:

     1.   CONTINUED EMPLOYMENT. You shall continue your employment with Aquila
under the terms and conditions of this Agreement as set forth below.

     2.   RETENTION BONUS. In addition to Your current salary, bonus
opportunities, and other compensation and benefits, You shall receive additional
compensation in the amount of $300,000, less all applicable taxes, should You
agree to remain employed by Aquila and perform Your job responsibilities through
the retention period that concludes as described under Paragraph 3.

     3.   ESCROW. On the date of this Agreement, Aquila will transfer the amount
referenced in paragraph 2 hereof (the "Escrowed Funds") to an independent third
party (the "Escrow Agent") pursuant to the terms and conditions of an escrow
agreement to be executed by Aquila, You, and the Escrow Agent (the "Escrow
Agreement"). The Escrow Agreement will, among other things, provided the Escrow
Agent instructions for the timing and conditions of payment of the Escrowed
Funds in satisfaction of Aquila's obligation to pay the Retention Bonus.

     4.   CONDITIONS AND TIMING OF PAYMENT. You will be eligible for Your
Retention Bonus as follows:

  4.1. INITIAL PERIOD. If You are employed by Aquila on August 15, 2002, unless
       Your supervisor indicates in writing that You have not performed the
       responsibilities for which you have been retained, You will be paid
       $150,000, which is one-half of the amount specified in paragraph 2
       above..

<Page>

  4.2. FINAL PERIOD. If You are employed by Aquila on September 30, 2002, unless
       Your supervisor indicates in writing that You have not performed the
       responsibilities for which You have been retained, You will be paid
       $150,000, which is one-half of the amount specified in paragraph 2 above.

  4.3. PAYMENT DATES. Your retention award will be paid in two separate
       installments. The first payment of one half the amount specified in
       paragraph 2 will be made on August 15, 2002, and the remainder will be
       paid on September 30th 2002.

  4.4. Death. In the event of Your death, Your estate shall be paid a pro-rata
       portion of the Retention Bonus based upon the portion of work that is
       completed for which You have been retained.

     5.   TERMINATION FOR CAUSE; WAIVER OF RIGHT TO RECEIVE RETENTION BONUS.
Your right to receive a Retention Bonus shall be waived in the event that You
are terminated for willful misconduct or for violation of Aquila policies and
procedures including the Employee Handbook. For purposes of this Agreement
"willful misconduct" shall mean actions by you constituting fraud, embezzlement,
other criminal acts, or willful action that is a breach of Your duty to Aquila,
Inc., Aquila Merchant Services, or any of their affiliates.

     6.   CONFIDENTIALITY. You will not publicize or disclose the terms of this
Agreement, either directly or indirectly, that is, through your agents,
attorneys, or accountants, or any other person, either in specific or as to
general content, to the public generally, including without limitations, any
employees or former agents, specifically including any former employees or to
any other person or entity, except and only to the extent that You are lawfully
compelled to do so by a court of competent jurisdiction or as hereinafter
provided. Your agreement to keep confidential the terms of this Agreement
extends to all persons other than, your spouse, significant other, attorneys,
accountants, financial advisers, or other professionals who have a legitimate
need to know the terms in order to render professional advice or services to You
and then, only as reasonably necessary for rendering such advice or services,
but in no event to any employees of Aquila. You agree not to identify or reveal
any terms of the Agreement except as otherwise permitted herein and agree that
You will direct and bind your accountants, attorneys, or other agents not to
disclose this Agreement. Any publication or disclosure of the Agreement by You
shall be considered a material breach of the Agreement.

     7.   CHOICE OF LAW. This Agreement shall be construed and governed by the
laws of the State of Missouri.

     8.   ENTIRE RETENTION AGREEMENT. The parties hereto agree that this
Agreement may not be modified, altered, or changed except by a written agreement
signed by the parties hereto. The parties acknowledge that this constitutes the
entire agreement between them superseding all prior written and oral agreements,
and that there are no other understandings or agreements, written or oral, among
them on the subject. If any

                                        2
<Page>

provision of this Agreement is held to be invalid, the remaining provisions
shall remain in full force and effect.

     9.   MISCELLANEOUS. Separate copies of this document shall constitute
original documents which may be signed separately but which together will
constitute one single agreement. You represent that you have no legal
impediments to fully and completely settle all claims and to sign this
Agreement. This Agreement shall be effective as of the date signed by You.

BY SIGNING THIS AGREEMENT, YOU ACKNOWLEDGE THAT YOU UNDERSTAND THE TERMS AND
CONDITIONS OF THE AGREEMENT.

EMPLOYEE:                               AQUILA, INC.:

By:                                     By:
/s/ Leslie J. Parrette, Jr.             /s/ Robert K. Green
-----------------------------           -----------------------------

Name: Leslie J. Parrette, Jr.           Name: Robert K. Green

                                        Title: President & CEO

Date: August 13, 2002                   Date: August 13, 2002
      -----------------------                 -----------------------

                                        3

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