Amendment Agreement

LENDER: Goldman Sachs Bank USA

/s/ Mark Walton

Mark Walton

Authorized Signatory

AMENDMENT AGREEMENT dated as of June 30, 2009 (this “Amendment Agreement”), among AMEREN CORPORATION, a Missouri corporation (the “Company”), UNION ELECTRIC COMPANY d/b/a AmerenUE, a Missouri corporation (“Union Electric”), AMEREN ENERGY GENERATING COMPANY, an Illinois corporation (“Genco”, and together with Union Electric and the Company, the “Borrowers” and each a “Borrower”), the LENDERS party hereto, JPMORGAN CHASE BANK, N.A. (“JPMCB”), as Administrative Agent (in such capacity, the “Agent”), and BARCLAYS BANK PLC, as Syndication Agent, in respect of the AMENDED AND RESTATED CREDIT AGREEMENT (the “Original Credit Agreement”) dated as of July 14, 2006, among the Borrowers, CENTRAL ILLINOIS PUBLIC SERVICE COMPANY, CENTRAL ILLINOIS LIGHT COMPANY, ILLINOIS POWER COMPANY, the Lenders, the Agent, and BARCLAYS BANK PLC, as Syndication Agent.

The Borrowers have requested that (i) pursuant to Section 2.23 of the Original Credit Agreement, the undersigned Lenders agree to extend the “Commitment Termination Date” under (and as such term is defined in the Original Credit Agreement) to July 14, 2011, and (ii) the Required Lenders agree to amend and restate the Original Credit Agreement in the form of the Restated Credit Agreement (as defined below).

In consideration of the mutual agreements, provisions and covenants herein contained, the parties hereto hereby agree, on the terms and subject to the conditions set forth herein, as follows:

SECTION 1. Defined Terms. (a) Capitalized terms used but not defined herein shall have the meanings assigned to such terms in the Restated Credit Agreement or, if not defined therein, the Original Credit Agreement.

“Additional Lender” means each Lender identified on Schedule I hereto as an Additional Lender. Each Additional Lender shall be Consenting Lender; the Commitment of each Additional Lender shall be an Extended Commitment; and the amount of the Commitment of each Additional Lender as of the Amendment Effective Date (as defined below) shall be the amount set forth next to such Lender’s name on Schedule I hereto.

“Assignee” means each Additional Lender and each Consenting Lender that will hold a Commitment under the Restated Credit Agreement that is greater than its Commitment under the Original Credit Agreement.

“Assignor” means each Existing Lender that is a Consenting Lender that will hold a Commitment under the Restated Credit Agreement that is less than its Commitment under the Original Credit Agreement.

“Consenting Lender” means each Additional Lender and each Lender identified on Schedule I hereto as a Consenting Lender. The Commitment of each Consenting Lender shall be an Extended Commitment and the amount of the Commitment of each Consenting Lender as of the Amendment Effective Date shall be the amount set forth next to such Lender’s name on Schedule I hereto.

“Existing Lender” means each Lender with an outstanding Commitment immediately prior to the occurrence of the Amendment Effective Date.

(c) From and after the Amendment Effective Date, the terms “Agreement”, “this Agreement”, “herein”, “hereinafter”, “hereto”, “hereof” and words of similar import, as used in the Restated Credit Agreement, shall, unless the context otherwise requires, refer to the Original Credit Agreement as amended and restated in the form of the Restated Credit Agreement, and the term “Credit Agreement”, as used in the Loan Documents, shall mean the Restated Credit Agreement.

SECTION 2. Extension of Commitment Termination Date. In accordance with Section 2.23 of the Original Credit Agreement, effective upon the occurrence of the Amendment Effective Date, the final termination date of each Consenting Lender’s Commitment is extended from July 14, 2010 (the current Commitment Termination Date under (and as defined in) the Original Credit Agreement) to the Extended Commitment Termination Date as provided in the Restated Credit Agreement and all notice and similar requirements of Section 2.23 of the Original Credit Agreement are deemed to have been satisfied.

SECTION 3. Amendment and Restatement of the Original Credit Agreement. Effective as of the Amendment Effective Date, the Original Credit Agreement (including the Schedules and Exhibits thereto) is hereby amended and restated to be in the form attached as Exhibit A hereto (the Original Credit Agreement, as so amended and restated, being referred to as the “Restated Credit Agreement”).

SECTION 4. Assignments. (a) Effective upon the occurrence of the Amendment Effective Date, each Assignor shall assign and delegate and each Assignee shall assume (each such assignment or assumption, an “Assignment”) such Commitments under the Restated Credit Agreement (together with all related Revolving Advances, participations in Letters of Credit and other related rights and interests under the Restated Credit Agreement) as shall be required so that the Commitment of each Consenting Lender shall be the amount set forth next to such Lender’s name on the Commitment Schedule attached to the Restated Credit Agreement. Each party hereto agrees that (1) each Assignee is purchasing and assuming the Commitments and interests purchased and assumed by it ratably from each Assignor and that each Assignor is assigning and delegating the Commitments and interests assigned and delegated by it ratably to each Assignee; (2) each Assignment shall be irrevocable and shall be made on the terms and

subject to the conditions set forth on Annex I to the Form of Assignment and Assumption attached as Exhibit C to the Restated Credit Agreement (which terms and conditions are incorporated herein by reference); (3) this Amendment Agreement shall constitute an “Assignment Agreement” for all purposes of the Restated Credit Agreement and the other Loan Documents; and (4) the Agent hereby agrees to waive any payment of fees required by Section 12.3.3 in connection with the Assignments. The Borrowers, the Agent and the Issuing Bank each hereby grant their consent to the Assignments.

(b) Upon the occurrence of the Amendment Effective Date, the Borrowers will (1) prepay all outstanding Advances (other than Competitive Loans), together with all interest accrued on such Advances and, to the extent applicable, any amounts due under Section 3.4 of the Restated Credit Agreement, and (2) will borrow Floating Rate Advances under the Restated Credit Agreement and the Supplemental Credit Agreement pursuant to Borrowing Notices delivered to the Agent on the Amendment Effective Date. Each party hereto waives all time periods otherwise required in respect of notices of such prepayments and borrowings.

SECTION 5. Conditions to Effectiveness. The transactions provided for in Section 2, 3 and 4 hereof and the obligations of the Additional Lenders and Consenting Lenders to make Loans under the Restated Credit Agreement shall become effective on the date (the “Amendment Effective Date”) on which (i) the Agent (or its counsel) shall have received duly executed counterparts of this Amendment Agreement that, when taken together, bear the authorized signatures of the Borrowers, each Additional Lender and each Consenting Lender (which Consenting Lenders shall constitute at least the Required Lenders under the Original Credit Agreement) and (ii) all the conditions specified in Section 4.1 of the Restated Credit Agreement are satisfied (unless waived in accordance with Section 8.2 of the Restated Credit Agreement).

SECTION 6. Further Actions. The Agent is hereby authorized and directed to enter into such Loan Documents and to take such other actions as may be required to give effect to the transactions contemplated hereby.

SECTION 7. Choice of Law. THIS AMENDMENT AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK.

SECTION 8. Counterparts. This Amendment Agreement may be executed in any number of counterparts, all of which taken together shall constitute one agreement, and any of the parties hereto may execute this Amendment Agreement by signing any such counterpart, each of which shall constitute an original but all of which when taken together shall constitute but one contract. Delivery of an executed counterpart of a signature page of this Amendment Agreement by electronic transmission shall be effective as delivery of a manually executed counterpart of this Amendment Agreement. This Amendment Agreement shall constitute a “Loan Document” for all purposes of the Restated Credit Agreement and the other Loan Documents.

SECTION 9. Expenses. In accordance with Section 9.6(i) of the Restated Credit Agreement, each Borrower agrees to reimburse the Agent for such Borrower’s share of all reasonable out-of-pocket expenses incurred by it in connection with this Amendment Agreement, including the reasonable fees, charges and disbursements of Cravath, Swaine & Moore LLP and other counsel for the Agent.

SECTION 10. Severability of Provisions. Any provision in this Amendment Agreement that is held to be inoperative, unenforceable or invalid in any jurisdiction shall, as to that jurisdiction, be inoperative, unenforceable or invalid without affecting the remaining provisions in that jurisdiction or the operation, enforceability or validity of that provision in any other jurisdiction, and to this end the provisions of this Amendment Agreement are declared to be severable.

SECTION 11. Headings. The headings of this Amendment Agreement are for purposes of reference only and shall not limit or otherwise affect the meaning hereof.

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


AMEREN CORPORATION,

	by	/s/ Jerre E. Birdsong
		Name:	Jerre E. Birdsong
		Title:	Vice President and Treasurer

UNION ELECTRIC COMPANY,

	by	/s/ Jerre E. Birdsong
		Name:	Jerre E. Birdsong
		Title:	Vice President and Treasurer

AMEREN ENERGY GENERATING COMPANY,

	by	/s/ Jerre E. Birdsong
		Name:	Jerre E. Birdsong
		Title:	Vice President and Treasurer


JPMORGAN CHASE BANK, N.A., as
Agent, as a Lender, and as an Issuing Bank,

	by	/s/ Michael DeForge
		Name:	Michael DeForge
		Title:	Managing Director

BARCLAYS BANK PLC, as Syndication
Agent, as a Lender,

	by	/s/ Sydney G. Dennis
		Name:	Sydney G. Dennis
		Title:	Director


LENDER: BNP Paribas

	by	/s/ Francis J. Delaney
		Name:	Francis J. Delaney
		Title:	Managing Director

	by	/s/ Pasquale A. Perraglia
		Name:	Pasquale A. Perraglia
		Title:	Vice President


LENDER: UBS Loan Finance LLC

	by	/s/ Irja R. Otsa
		Name:	Irja R. Otsa
		Title:	Associate Director

	by	/s/ Marie Haddad
		Name:	Marie Haddad
		Title:	Associate Director


LENDER: Deutsche Bank AG New York Branch

	by	/s/ Marcus M. Tarkington
		Name:	Marcus M. Tarkington
		Title:	Director

	by	/s/ Paul O’Leary
		Name:	Paul O’Leary
		Title:	Director

This Amended and Restated Credit Agreement, dated as of June 30, 2009, is entered into by and among Ameren Corporation, a Missouri corporation, and its subsidiaries Union Electric Company d/b/a AmerenUE, a Missouri corporation, and Ameren Energy Generating Company, an Illinois corporation, the Lenders and JPMorgan Chase Bank, N.A., as Agent, and amends and restates the Five-Year Revolving Credit Agreement dated as of July 14, 2005, and amended and restated as of July 14, 2006 (as amended through the date hereof, the “Original Credit Agreement”). The obligations of the Borrowers under this Agreement will be several and not joint, and, except as otherwise set forth in this Agreement, the obligations of the Borrowers will not be guaranteed by the Company or any other subsidiary of the Company (including, without limitation, any other Borrowing Subsidiary). The parties hereto agree as follows:

“Acquisition” means any transaction, or any series of related transactions, consummated on or after the Closing Date, by which a Borrower or any of its Subsidiaries (i) acquires any going business or all or substantially all of the assets of any firm, corporation or limited liability company, or division thereof, whether through purchase of assets, merger or otherwise or (ii) directly or indirectly acquires (in one transaction or as the most recent transaction in a series of transactions) at least a majority (in number of votes) of the securities of a corporation which have ordinary voting power for the election of directors (other than securities having such power only by reason of the happening of a contingency) or a majority (by percentage of voting power) of the outstanding ownership interests of a partnership or limited liability company of any Person.

“Administrative Questionnaire” means an Administrative Questionnaire in a form supplied by the Agent.

“Advance” means (a) with respect to any Borrower, Revolving Loans (i) made by the Lenders to such Borrower on the same Borrowing Date or (ii) converted or continued by the Lenders on the same date of conversion or continuation, consisting, in either case, of the aggregate amount of the several Revolving Loans made to such Borrower of the same Type and, in the case of Eurodollar Loans, for the same Interest Period, or (b) a Competitive Loan or group of Competitive Loans of the same type made on the same date and as to which a single Interest Period is in effect.

“Affiliate” of any Person means any other Person directly or indirectly controlling, controlled by or under common control with such Person. A Person shall be deemed to control another Person if the controlling Person is the “beneficial owner” (as defined in Rule 13d-3 under the Securities Exchange Act of 1934) of 10% or more of any class of voting securities (or other ownership interests) of the controlled Person or possesses, directly or indirectly, the power to direct or cause the direction of the management or policies of the controlled Person, whether through ownership of voting securities, by contract or otherwise (with such percentage being calculated as if such beneficial owner had exercised all its rights to acquire such securities or interests).

“Agent” means JPMCB, not in its individual capacity as a Lender, but in its capacity as contractual representative of the Lenders pursuant to Article X, and any successor Agent appointed pursuant to Article X.

“Aggregate Commitment” means the aggregate of the Commitments of all the Lenders, as increased or reduced from time to time pursuant to the terms hereof. The initial Aggregate Commitment is One Billion One Hundred Fifty Million Dollars ($1,150,000,000)

“Aggregate Outstanding Credit Exposure” means, at any time, the aggregate of the Outstanding Credit Exposures of all the Lenders.

“Aggregate Revolving Credit Exposure” means, at any time, the aggregate of the Revolving Credit Exposures of all the Lenders.

“Agreement” means this Amended and Restated Credit Agreement, as it may be amended, restated, supplemented or otherwise modified and as in effect from time to time.

“Agreement Accounting Principles” means generally accepted accounting principles as in effect in the United States from time to time, applied in a manner consistent with that used in preparing the financial statements referred to in Section 5.4; provided, however, that except as provided in Section 9.8, with respect to the calculation of the financial ratio set forth in Section 6.17 (and the defined terms used in such Section), “Agreement Accounting Principles” means generally accepted accounting principles as in effect in the United States as of March 31, 2009, applied in a manner consistent with that used in preparing the financial statements referred to in Section 5.4 hereof.

“Alternate Base Rate” means, for any day, a fluctuating rate of interest per annum equal to the highest of (i) the Prime Rate for such day, (ii) the sum of (a) the Federal Funds Effective Rate for such day and (b) one-half of one percent (0.5%) per annum and (iii) the sum of (x) (A) the Eurodollar Base Rate for a one-month Interest Period on such day (or if such day is not a Business Day, the immediately preceding Business Day) divided by (B) one minus the Reserve Requirement (expressed as a decimal) applicable to such Interest Period, and (y) one percent (1.0%) per annum, provided that, for the avoidance of doubt, the Eurodollar Base Rate for any day shall be based on the rate appearing on the Reuters BBA Libor Rates Page 3750 (or on any successor or substitute page of such page) at approximately 11:00 a.m. London time on such day.

“Amendment Agreement” means the Amendment Agreement dated as of the Amendment Effective Date pursuant to which this Agreement is amended and restated as of the Amendment Effective Date.

“Amendment Effective Date” means the date that the amendment and restatement of the Original Credit Agreement by this Agreement becomes effective pursuant to Section 4.1.

“Applicable Fee Rate” means (a) (i) with respect to the Facility Fee payable in respect of Non-Extended Commitments at any time, the percentage rate per annum which is applicable to such fee at such time with respect to the Company as set forth in the Pricing Schedule — Part I, and (ii) with respect to the Facility Fee applicable to any Borrower and payable in respect of Extended Commitments at any time, the percentage rate per annum which is applicable to such fee at such time with respect to such Borrower as set forth in the Pricing Schedule — Part II, and (b) (i) with respect to the LC Participation Fee applicable to any Borrower and payable in respect of Non-Extended Commitments at any time, the percentage rate per annum which is applicable to such fee at such time with respect to such Borrower as set forth in the Pricing Schedule — Part I, and (ii) with respect to the LC Participation Fee applicable to any Borrower and payable in respect of Extended Commitments at any time, the percentage rate per annum which is applicable to such fee at such time with respect to such Borrower as set forth in the Pricing Schedule — Part II.

“Applicable Margin” means, with respect to any Borrower, (a) with respect to Advances of any Type at any time made pursuant to Non-Extended Commitments and participations in LC Disbursements acquired pursuant to Non-Extended Commitments, the percentage rate per annum which is applicable at such time to Advances of such Type (or, in the case of LC Disbursements, to Floating Rate Advances) to such Borrower, as set forth in the Pricing Schedule — Part I, and (b) with respect to Advances of any Type at any time made pursuant to Extended Commitments and participations in LC Disbursements acquired pursuant to Extended Commitments, the percentage rate per annum which is applicable at such time to Advances of such Type (or, in the case of LC Disbursements, to Floating Rate Advances) to such Borrower, as set forth in the Pricing Schedule — Part II.

“Approved Fund” means any Fund that is administered or managed by (a) a Lender, (b) an Affiliate of a Lender or (c) an entity or an Affiliate of an entity that administers or manages a Lender.

“Arrangers” means J.P. Morgan Securities Inc. and Barclays Capital and their respective successors, in their respective capacities as Joint Arrangers and Joint Bookrunners.

“Article” means an article of this Agreement unless another document is specifically referenced.

“Audrain Project” means the Chapter 100 financing transaction and agreements related thereto assigned by affiliates of NRG Energy, Inc. (“NRG”) to and assumed by Union Electric as a part of Union Electric’s purchase of a combustion turbine generating facility located in Audrain County, Missouri (the “County”) pursuant to which (i) Union Electric assumed a lease from the County of certain land and improvements, including the combustion turbine generating facility, and (ii) Union Electric acquired NRG’s ownership of indebtedness issued by the County to finance the acquisition of such property.

“Augmenting Lender” has the meaning assigned to such term in Section 2.25(a).

“Authorized Officer” of any Borrower means any of the chief executive officer, president, chief operating officer, chief financial officer, treasurer or vice president of such Borrower, acting singly.

“Availability Termination Date” means, as to any Borrower, the earlier of (a) the Maturity Date for such Borrower and (b) the date of termination in whole of the Aggregate Commitment and the Commitments pursuant to Section 2.8.3 or Section 8.1 hereof.

“Available Aggregate Commitment” means, at any time, the Aggregate Commitment then in effect minus the Aggregate Outstanding Credit Exposure at such time.

“Borrower Credit Exposure” means, with respect to any Borrower at any time, the aggregate amount of (i) all Revolving Loans made to such Borrower and outstanding at such time, (ii) all Competitive Loans made to such Borrower and outstanding at such time and (iii) that portion of the LC Exposure at such time attributable to Letters of Credit issued for the account of such Borrower.

“Borrower Sublimit” means (a) as to each of Genco and Union Electric, its Subsidiary Sublimit, and (b) as to the Company, $1,150,000,000 or, in the case of any Borrower, any lesser amount to which the Borrower Sublimit of the Company shall have been reduced pursuant to Section 2.8.3.

“Business Day” means (i) with respect to any borrowing, payment or rate selection of Eurodollar Advances, a day (other than a Saturday or Sunday) on which banks generally are open in New York, New York for the conduct of substantially all of their commercial lending activities, interbank wire transfers can be made on the Fedwire system and dealings in Dollars are carried on in the London interbank market and (ii) for all other purposes, a day (other than a Saturday or Sunday) on which banks generally are open in New York, New York for the conduct of substantially all of their commercial lending activities and interbank wire transfers can be made on the Fedwire system.

“Capitalized Lease” of a Person means any lease of Property by such Person as lessee which would be capitalized on a balance sheet of such Person prepared in accordance with Agreement Accounting Principles.

“Capitalized Lease Obligations” of a Person means the amount of the obligations of such Person under Capitalized Leases which would be shown as a liability on a balance sheet of such Person prepared in accordance with Agreement Accounting Principles.

“Change in Control” means, in respect of any Borrower, (i) the acquisition by any Person, or two or more Persons acting in concert, of beneficial ownership (within the meaning of Rule 13d-3 under the Securities Exchange Act of 1934) of twenty percent (20%) or more of the aggregate ordinary voting power represented by the issued and outstanding capital stock of the Company; (ii) the Company shall cease to own, directly or indirectly and free and clear of all Liens or other encumbrances (except for such Liens or other encumbrances permitted by Section 6.13), outstanding shares representing 100% of the ordinary voting power represented by the issued and outstanding common stock of (A) in the case of the Company, any of the Borrowing Subsidiaries, and (B) in the case of any other Borrower, such Borrower, in each case on a fully diluted basis, or (iii) occupation of a majority of the seats (other than vacant seats) on the board of directors of the Company by Persons who were neither (a) nominated by the board of directors of the Company or a committee or subcommittee thereof to which such power was delegated nor (b) appointed by directors so nominated; provided that any individual who is so nominated in connection with a merger, consolidation, acquisition or similar transaction shall be included in such majority unless such individual was a member of the Company’s board of directors prior thereto.

“CILCO” means Central Illinois Light Company d/b/a AmerenCILCO, an Illinois corporation and, as of the Amendment Effective Date, a subsidiary of the Company.

“CILCORP” means CILCORP Inc., an Illinois corporation, the parent company of CILCO.

“CIPS” means Central Illinois Public Service Company d/b/a AmerenCIPS, an Illinois corporation and, as of the Amendment Effective Date, a subsidiary of the Company.

“Code” means the Internal Revenue Code of 1986, as amended, reformed or otherwise modified from time to time, and any rule or regulation issued thereunder.

“Commitment” means, for each Lender, the amount set forth (a) on the Commitment Schedule, (b) in an Assignment Agreement executed pursuant to Section 12.3 opposite such Lender’s name, or (c) in a Commitment Increase Amendment, in each case as it may be modified as a result of any assignment that has become effective pursuant to Section 12.3.3, as it may be increased pursuant to Section 2.25 or as otherwise modified from time to time pursuant to the terms hereof. Each Commitment shall be an Extended Commitment or a Non-Extended Commitment.

“Commitment Increase” has the meaning assigned to such term in Section 2.25(a).

“Commitment Increase Amendment” has the meaning assigned to such term in Section 2.25(a).

“Commitment Schedule” means the Schedule identifying each Lender’s Commitment as of the Amendment Effective Date attached to the Amendment Agreement and identified as such.

“Commonly Controlled Entity” means, with respect to any Borrower, any trade or business, whether or not incorporated, which is under common control with such Borrower or any subsidiary of such Borrower within the meaning of Section 4001 of ERISA or that, together with such Borrower or any subsidiary of such Borrower, is treated as a single employer under Section 414(b) or (c) of the Code or, solely for purposes of Section 302 of ERISA and Section 412 of the Code, is treated as a single employer under Section 414 of the Code.

“Competitive Bid” means an offer by a Lender to make a Competitive Loan in accordance with Section 2.4.

“Competitive Bid Rate” means, with respect to any Competitive Bid, the Margin or the Fixed Rate, as applicable, offered by the Lender making such Competitive Bid.

“Competitive Bid Request” means a request by a Borrower for Competitive Bids in accordance with Section 2.4.

“Consenting Lender” means, with respect to each Extended Commitment, the Lender that holds such Commitment as a result of such Lender’s (a) consent as of the Amendment Effective Date to the extension of final termination date of its Commitment from the Commitment Termination Date to the Extended Commitment Termination Date with respect to the Commitment it holds on the Amendment Effective Date, (b) agreement pursuant to the Amendment Agreement as of the Amendment Effective Date to increase the amount of its Commitment or to provide a new Commitment, (c) agreement after the Amendment Effective Date pursuant to a Commitment Increase Agreement to increase the amount of its Commitment or to provide a new Commitment, or (d) purchase of an assignment of an Extended Commitment from another Lender. A Lender may hold both an Extended Commitment and a Non-Extended Commitment and in such case will be a “Consenting Lender” in its capacity as holder of the Extended Commitment and a “Declining Lender” in its capacity as holder of the Non-Extended Commitment.

“Consolidated Indebtedness” of a Person means at any time the Indebtedness of such Person and its Subsidiaries (or, solely in the case of the Company, its consolidated subsidiaries) which would be consolidated in the consolidated financial statements of such Person under Agreement Accounting Principles calculated on a consolidated basis as of such time; provided, however, that Consolidated Indebtedness shall exclude any Indebtedness incurred as part of any Permitted Securitization.

“Consolidated Net Worth” of a Person means at any time the consolidated stockholders’ equity, preferred stock and Hybrid Securities of such Person and its Subsidiaries (or, solely in the case of the Company, its consolidated subsidiaries) calculated on a consolidated basis in accordance with Agreement Accounting Principles; provided that the amount of Hybrid Securities included in Consolidated Net Worth shall represent no more than 15% of Consolidated Total Capitalization of the Company.

“Consolidated Tangible Assets” means, as to the Company, the total amount of all assets of the Company and its consolidated subsidiaries determined in accordance with Agreement Accounting Principles, and, as to any Borrowing Subsidiary, the total amount of all assets of such Borrowing Subsidiary and its consolidated Subsidiaries determined in accordance with Agreement Accounting Principles, minus, to the extent included in the total amount of such Borrower’s and its consolidated subsidiaries’ or Subsidiaries’, as applicable, total assets, the net book value of all (i) goodwill, including, without limitation, the excess cost over book value of any asset, (ii) organization or experimental expenses, (iii) unamortized debt discount and expense, (iv) patents, trademarks, tradenames and copyrights, (v) treasury stock, (vi) franchises, licenses and permits, and (vii) other assets which are deemed intangible assets under Agreement Accounting Principles.

“Consolidated Total Capitalization” means, as to any Borrower at any time, the sum of Consolidated Indebtedness of such Borrower and Consolidated Net Worth of such Borrower, each calculated at such time.

“Contingent Obligation” of a Person means any agreement, undertaking or arrangement by which such Person assumes, guarantees, endorses, contingently agrees to purchase or provide funds for the payment of, or otherwise becomes or is contingently liable upon, the obligation or liability of any other Person, or agrees to maintain the net worth or working capital or other financial condition of any other Person, or otherwise assures any creditor of such other Person against loss, including, without limitation, any comfort letter, operating agreement, take-or-pay contract or the obligations of any such Person as general partner of a partnership with respect to the liabilities of the partnership.

“Contribution Percentage” means, at any time with respect to each Borrower, the ratio, expressed as a percentage, of such Borrower’s Borrower Sublimit to the aggregate amount of all the Borrower Sublimits at such time; provided that, if the Commitments or all the Borrower Sublimits shall have been terminated, the Contribution Percentages shall be determined based on the Borrower Sublimits most recently in effect prior to such termination. As of the Amendment Effective Date, the Contribution Percentage of each Borrower is (a) in the case of Union Electric, 27.8%, (b) in the case of Genco, 8.3%, and (c) in the case of the Company, 63.9%. The Contribution Percentage with respect to any amount owing by a Borrower shall be determined as of the time such amount became due.

“Credit Agreements” means, collectively, the Supplemental Credit Agreement and this Agreement.

“Credit Extension” means the making of an Advance or the issuance of a Letter of Credit hereunder.

“Credit Extension Date” means, with respect to any Borrower, the Borrowing Date for an Advance or the date of issuance of a Letter of Credit to or for the account of such Borrower.

“Declining Lender” means, with respect to each Non-Extended Commitment, the Lender that holds such Commitment as a result of such Lender’s (a) declining to consent as of the Amendment Effective Date to the extension from the Commitment Termination Date to the Extended Commitment Termination Date of the Commitment it holds on the Amendment Effective Date, or (b) purchase of an assignment of a Non-Extended Commitment from another Lender. A Lender may hold both an Extended Commitment and a Non-Extended Commitment and in such case will be a “Consenting Lender” in its capacity as holder of the Extended Commitment and a “Declining Lender” in its capacity as holder of the Non-Extended Commitment.

“Defaulting Lender” means any Lender, as determined by the Agent, that has (a) failed to perform its obligation to fund any portion of its Loans or participations in Letters of Credit within three Business Days of the date required to be funded by it hereunder, unless, in the case of a Loan, such obligation is the subject of a good faith dispute, (b) notified any Borrower, the Agent, the Issuing Bank or any Lender in writing that it does not intend to comply with any of its funding obligations under this Agreement or has made a public statement that it does not intend to comply with its funding obligations under this Agreement or generally under other agreements in which it commits to extend credit, (c) failed, within three Business Days after written request by the Agent, to confirm that it will comply with the terms of this Agreement relating to its obligations to fund prospective Loans and participations in then outstanding Letters of Credit, (d) otherwise failed to pay over to the Agent or any other Lender any other amount required to be paid by it hereunder within three Business Days of the date when due, unless the subject of a good faith dispute, or (e) become the subject of a bankruptcy or insolvency proceeding, or has had a receiver, conservator, trustee or custodian appointed for it, or has taken any action in furtherance of, or indicating its consent to, approval of or acquiescence in any such proceeding or appointment or has a parent company that has become the subject of a bankruptcy or insolvency proceeding, or has had a receiver, conservator, trustee or custodian appointed for it, or has taken any action in furtherance of, or indicating its consent to, approval of or acquiescence in any such proceeding or appointment, unless in the case of any Lender referred to in this clause (e) the Company, the Agent and each Issuing Bank shall be satisfied that such Lender intends, and has all approvals required to enable it, to continue to perform its obligations as a Lender hereunder; provided that a Lender shall not be a Defaulting Lender solely by virtue of the ownership or acquisition of any equity interest in such Lender or parent company thereof by a governmental authority or an instrumentality thereof. The Agent shall provide written notice to any Lender determined by the Agent to be a Defaulting Lender hereunder (and the Agent shall provide a copy of such determination to the Company).

“Designated Lender” means, with respect to each Designating Lender, each Eligible Designee designated by such Designating Lender pursuant to Section 12.1.2.

“Designating Lender” means, with respect to each Designated Lender, the Lender that designated such Designated Lender pursuant to Section 12.1.2.

“Disclosed Matters” means the events, actions, suits and proceedings and the environmental matters disclosed in the Exchange Act Documents.

“Documentation Agents” means The Bank of Tokyo-Mitsubishi UFJ, Ltd., BNP Paribas and U.S. Bank National Association.

“Dollar” and “$” means the lawful currency of the United States of America.

“Eligible Designee” means a special purpose corporation, partnership, trust, limited partnership or limited liability company that is administered by the respective Designating Lender or an Affiliate of such Designating Lender and (i) is organized under the laws of the United States of America or any state thereof, (ii) is engaged primarily in making, purchasing or otherwise investing in commercial loans in the ordinary course of its business and (iii) issues (or the parent of which issues) commercial paper rated at least A-1 or the equivalent thereof by S&P or P-1 or the equivalent thereof by Moody’s.

“Environmental Laws” means any and all federal, state, local and foreign statutes, laws, judicial decisions, regulations, ordinances, rules, judgments, orders, decrees, plans, injunctions, permits, concessions, grants, franchises, licenses, agreements and other governmental restrictions relating to (i) the protection of the environment, (ii) the effect of the environment on human health, (iii) emissions, discharges or releases of pollutants, contaminants, hazardous substances or wastes into surface water, ground water or land, or (iv) the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of pollutants, contaminants, hazardous substances or wastes or the clean-up or other remediation thereof.

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended from time to time.

“ERISA Event” means, as to any Borrower, (a) any Reportable Event with respect to such Borrower or any Commonly Controlled Entity of such Borrower; (b) the existence with respect to any Plan of such Borrower or any Commonly Controlled Entity of such Borrower of an “accumulated funding deficiency” (as defined in Section 412 of the Code or Section 302 of ERISA) whether or not waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d) of ERISA of an application for a waiver of the minimum funding standard with respect to any Plan of such Borrower or any Commonly Controlled Entity of such Borrower; (d) the incurrence by such Borrower or any Commonly Controlled Entity of such Borrower of any liability under Title IV of ERISA with respect to the termination of any Plan of such Borrower or any Commonly Controlled Entity of such Borrower; (e) the receipt by such Borrower or any Commonly Controlled Entity of such Borrower from the PBGC or a plan administrator of any notice relating to an intention to terminate any Plan or to appoint a trustee to administer any Plan of such Borrower or any Commonly Controlled Entity of such Borrower; (f) the incurrence by such Borrower or any Commonly Controlled Entity of such Borrower of any liability with respect to the withdrawal or partial withdrawal from any Plan or Multiemployer Plan of such Borrower or any Commonly Controlled Entity of such Borrower; or (g) the receipt by such Borrower or any Commonly Controlled Entity of such Borrower of any notice, or the receipt by any Multiemployer Plan from such Borrower or any Commonly Controlled Entity of such Borrower of any notice, concerning the imposition of “withdrawal liability” (as defined in Part I of Subtitle E of Title IV of ERISA) or a determination that a Multiemployer Plan of such Borrower or any Commonly Controlled Entity of such Borrower is, or is expected to be, insolvent or in reorganization, within the meaning of Title IV of ERISA.

“Eurodollar Advance” means an Advance which, except as otherwise provided in Section 2.14, bears interest at the applicable Eurodollar Rate.

“Eurodollar Base Rate” means, with respect to a Eurodollar Advance for the relevant Interest Period, the applicable British Bankers’ Association LIBOR rate for deposits in Dollars as reported by any generally recognized financial information service as of 11:00 a.m. (London time) two (2) Business Days prior to the first day of such Interest Period, and having a maturity equal to such Interest Period, provided that, if no such British Bankers’ Association LIBOR rate is available to the Agent, the applicable Eurodollar Base Rate for the relevant Interest Period shall instead be the rate determined by the Agent to be the rate at which JPMCB or one of its affiliate banks offers to place deposits in Dollars with first-class banks in the London interbank market at approximately 11:00 a.m. (London time) two (2) Business Days prior to the first day of such Interest Period, in the approximate amount of JPMCB’s relevant Eurodollar Loan and having a maturity equal to such Interest Period.

“Eurodollar Loan” means a Loan which, except as otherwise provided in Section 2.14, bears interest at the applicable Eurodollar Rate.

“Eurodollar Rate” means, with respect to a Eurodollar Advance to any Borrower for the relevant Interest Period, the sum of (i) the quotient of (a) the Eurodollar Base Rate applicable to such Interest Period, divided by (b) one minus the Reserve Requirement (expressed as a decimal) applicable to such Interest Period, plus (ii) (A) in the case of a Eurodollar Advance consisting of Revolving Loans, the then Applicable Margin applicable to such Borrower, changing as and when the Applicable Margin changes and (B) in the case of a Eurodollar Advance consisting of a Competitive Loan or Loans, the Margin applicable to such Loan or Loans.

“Eurodollar Rate Advance” means an Advance consisting of Competitive Loans bearing interest at the Eurodollar Rate.

“Exchange Act Documents” means (a) the Annual Reports of the Company and the Borrowing Subsidiaries to the SEC on Form 10-K for the fiscal year ended December 31, 2008, (b) the Quarterly Reports of the Company and the Borrowing Subsidiaries to the SEC on Form 10-Q for the fiscal quarter ended March 31, 2009 and (c) all Current Reports of the Company and the Borrowing Subsidiaries to the SEC on Form 8-K from January 1, 2009, to June 26, 2009.

“Excluded Taxes” means, in the case of each Lender or applicable Lending Installation and the Agent, taxes imposed on its overall net income, and franchise taxes imposed on it, by (i) the jurisdiction under the laws of which such Lender or the Agent is incorporated or organized or any political combination or subdivision or taxing authority thereof or (ii) the jurisdiction in which the Agent’s or such Lender’s principal executive office or such Lender’s applicable Lending Installation is located, or any political combination or subdivision or taxing authority thereof.

“Exhibit” refers to an exhibit to this Agreement, unless another document is specifically referenced.

“Existing Illinois Credit Agreements” means (a) the Credit Agreement dated as of July 14, 2006, among the Illinois Utilities, Resources, CILCORP, the lenders from time to time party thereto and JPMCB, as agent and (b) the Credit Agreement dated as of February 9, 2007, among the Illinois Utilities, Resources, CILCORP, the lenders from time to time party thereto and JPMCB, as agent.

“Existing Intercompany Note” means the Amended and Restated Promissory Note, dated May 1, 2000 and as amended and restated on May 1, 2005, between Genco, as maker and CIPS, as payee.

“Existing UE Indenture” means the Indenture of Mortgage and Deed of Trust dated as of June 15, 1937, as heretofore or from time to time hereafter supplemented and amended, between Union Electric and The Bank of New York Mellon, as Trustee.

“Extended Commitment” means each Commitment that terminates on the Extended Commitment Termination Date.

“Facility Termination Date” means the first date on which the Availability Termination Date shall have occurred as to each Borrower.

“Federal Funds Effective Rate” means, for any day, an interest rate per annum 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 for such day (or, if such day is not a Business Day, for the immediately preceding Business Day) by the Federal Reserve Bank of New York, or, if such rate is not so published for any day which is a Business Day, the average of the quotations at approximately 11:00 a.m. (New York time) on such day on such transactions received by the Agent from three Federal Funds brokers of recognized standing selected by the Agent in its sole discretion.

“Federal Power Act” means The Federal Power Act, 16 U.S.C. §§ 791(a), et seq., as amended.

“FERC Limit” means, as to each Borrowing Subsidiary, the amount set forth below opposite the name of such Borrowing Subsidiary:

“First Mortgage Bonds” means bonds or other indebtedness issued by Union Electric pursuant to the Existing UE Indenture.

“Fixed Rate” means, with respect to any Competitive Loan (other than a Eurodollar Rate Advance), the fixed rate of interest per annum specified by the Lender making such Competitive Loan in its related Competitive Bid.

“Fixed Rate Advance” means an Advance consisting of Competitive Loans bearing interest at a Fixed Rate.

“Fixed Rate Loan” means a Competitive Loan bearing interest at a Fixed Rate.

“Floating Rate” means, for any day, with respect to a Borrower, a rate per annum equal to the sum of (i) the Alternate Base Rate for such day, changing when and as the Alternate Base Rate changes, plus (ii) the then Applicable Margin applicable to such Borrower, changing as and when the Applicable Margin changes.

“Floating Rate Advance” means an Advance which, except as otherwise provided in Section 2.14, bears interest at the Floating Rate.

“Fund” means any Person (other than a natural person) that is (or will be) engaged in making, purchasing, holding or otherwise investing in commercial loans and similar extensions of credit in the ordinary course of its business.

“Genco” means Ameren Energy Generating Company, an Illinois corporation and a Subsidiary of the Company.

“Hybrid Securities” means, on any date (the “Determination Date”), any securities, other than common stock, issued by the Company or a Hybrid Vehicle that meet the following criteria: (a) such securities are classified as possessing a minimum of “intermediate equity content” by S&P, Basket C equity credit by Moody’s, and 50% equity credit by Fitch (or the equivalent classifications then in effect by such agencies), (b) such securities require no repayments or prepayments and no mandatory redemptions or repurchases, in each case prior to a date at least one year after the Commitment Termination Date and (c) the claims of holders of any such securities that are Indebtedness are subordinated to the claims of the Lenders in respect of the Obligations of the Company on terms reasonably satisfactory to the Agent. As used in this definition, “mandatory redemption” shall not include conversion of a security into common stock of the Company or the applicable Hybrid Vehicle.

“Hybrid Vehicle” means a special purpose subsidiary directly owned by the Company, or a trust formed by the Company, in each case for the sole purpose of issuing Hybrid Securities and which conducts no business other than the issuance of Hybrid Securities and activities incidental thereto.

“Inactive Subsidiary” means any Subsidiary of a Borrower that (a) does not conduct any business operations, (b) has assets with a total book value not in excess of $1,000,000 and (c) does not have any Indebtedness outstanding.

“Indebtedness” of a Person means, at any time, without duplication, such Person’s (i) obligations for borrowed money, (ii) obligations representing the deferred purchase price of Property or services (other than current accounts payable arising in the ordinary course of such Person’s business payable on terms customary in the trade), (iii) obligations, whether or not assumed, secured by Liens or payable out of the proceeds or production from Property now or hereafter owned or acquired by such Person, (iv) obligations which are evidenced by notes, bonds, debentures, acceptances, or other instruments, (v) obligations to purchase securities or other Property arising out of or in connection with the sale of the same or substantially similar securities or Property, (vi) Capitalized Lease Obligations (except for Capitalized Lease Obligations entered into by Union Electric in connection with the Peno Creek Project or the Audrain Project), (vii) Contingent Obligations of such Person, (viii) reimbursement obligations under letters of credit, bankers acceptances, surety bonds and similar instruments issued upon the application of such Person or upon which such Person is an account party or for which such Person is in any way liable, (ix) Off-Balance Sheet Liabilities, (x) obligations under Sale and Leaseback Transactions, (xi) Net Mark-to-Market Exposure under Rate Management Transactions and (xii) any other obligation for borrowed money which in accordance with Agreement Accounting Principles would be shown as a liability on the consolidated balance sheet of such Person.

“Interest Period” means (a) with respect to a Eurodollar Advance, a period of one, two, three or six months (or such other period as may be agreed by each Lender), commencing on the date of such Advance and ending on but excluding the day which corresponds numerically to such date one, two, three or six months (or such other period as each Lender shall have agreed) thereafter and (b) with respect to any Fixed Rate Advance, the period (which shall not be less than 7 days or more than 360 days) commencing on the date of such Advance and ending on the date specified in the applicable Competitive Bid Request; provided, however, that (i) in the case of Eurodollar Advances, if there is no such numerically corresponding day in such next, second, third or sixth succeeding month (or in the last calendar unit of such other period as each Lender shall have agreed), such Interest Period shall end on the last Business Day of such next, second, third or sixth succeeding month (or of such calendar unit of such other approved period), (ii) if an Interest Period would otherwise end on a day which is not a Business Day, such Interest Period shall end on the next succeeding Business Day, provided, however, that if said next succeeding Business Day falls in a new calendar month, such Interest Period shall end on the immediately preceding Business Day and (iii) no Interest Period in respect of an Advance to any Borrower may end after the Availability Termination Date for such Borrower. For purposes hereof, the date of an Advance initially shall be the date on which such Advance is made and, in the case of an Advance comprising Revolving Loans, thereafter shall be the effective date of the most recent conversion or continuation of such Loans.

“Investment” of a Person means any loan, advance (other than commission, travel and similar advances to officers and employees made in the ordinary course of business), extension of credit (other than accounts receivable arising in the ordinary course of business on terms customary in the trade), undertaking of any Contingent Obligation in respect of any obligation of any other Person or contribution of capital by such Person; stocks, bonds, mutual funds, partnership interests, notes, debentures or other securities owned by such Person; any deposit accounts and certificates of deposit owned by such Person; and structured notes, derivative financial instruments and other similar instruments or contracts owned by such Person.

“IP” means Illinois Power Company d/b/a AmerenIP, an Illinois corporation and, as of the Amendment Effective Date, a subsidiary of the Company.

“Issuing Bank” means, at any time, JPMCB and each other person that shall have become an Issuing Bank hereunder as provided in Section 2.6(j), each in its capacity as an issuer of Letters of Credit hereunder. Each Issuing Bank may, in its discretion, arrange for one or more Letters of Credit to be issued by Affiliates of such Issuing Bank, in which case the term “Issuing Bank” shall include any such Affiliate with respect to Letters of Credit issued by such Affiliate.

“LC Commitment” means, as to each Issuing Bank, the commitment of such Issuing Bank to issue Letters of Credit pursuant to Section 2.6. The initial amount of each Issuing Bank’s LC Commitment is set forth on the LC Commitment Schedule, or in the case of any additional Issuing Bank, as provided in Section 2.6(j).

“LC Commitment Schedule” means the Schedule identifying each Issuing Bank’s LC Commitment as of the Amendment Effective Date attached hereto and identified as such.

“LC Disbursement” means a payment made by an Issuing Bank pursuant to a Letter of Credit.

“LC Exposure” means, at any time, the sum of (a) the aggregate undrawn amount of all outstanding Letters of Credit at such time plus (b) the aggregate amount of all LC Disbursements that have not yet been reimbursed by or on behalf of the applicable Borrowers at such time. The LC Exposure of any Lender at any time shall be its Pro Rata Share of the total LC Exposure at such time.

“Lenders” means the lending institutions listed on the signature pages of this Agreement and their respective successors and assigns as well as any Person that becomes a “Lender” hereunder pursuant to Sections 2.22 or 2.25, in each case until such time as such Person ceases to be a Lender hereunder.

“Lending Installation” means, with respect to a Lender or the Agent, the office, branch, subsidiary or affiliate of such Lender or the Agent listed on the signature pages hereof or on the administrative information sheets provided to the Agent in connection herewith or on a Schedule or otherwise selected by such Lender or the Agent pursuant to Section 2.20.

“Letter of Credit” means any letter of credit issued pursuant to this Agreement.

“Leveraged Lease Sales” means sales by the Company or any Subsidiary of investments, in existence on the date hereof, in assets leased to an unaffiliated lessee under leveraged lease arrangements in existence on the date hereof, including any transactions between and among the Company and/or subsidiaries that are necessary to effect the sale of such investments to a Person other than the Company or any of its Subsidiaries.

“Lien” means any lien (statutory or other), mortgage, pledge, hypothecation, assignment, deposit arrangement, encumbrance or preference, priority or other security agreement or preferential arrangement of any kind or nature whatsoever (including, without limitation, the interest of a vendor or lessor under any conditional sale, Capitalized Lease or other title retention agreement, and, in the case of stock, stockholders agreements, voting trust agreements and all similar arrangements).

“Loans” means the loans made by the Lenders to the Borrowers pursuant to this Agreement.

“Loan Documents” means this Agreement and all other documents, instruments, notes (including any Notes issued pursuant to Section 2.16 (if requested)) and agreements executed in connection herewith or therewith or contemplated hereby or thereby, as the same may be amended, restated or otherwise modified and in effect from time to time.

“Margin” means, with respect to any Competitive Loan bearing interest at a rate based on the Eurodollar Base Rate, the marginal rate of interest, if any, to be added to or subtracted from the Eurodollar Base Rate to determine the rate of interest applicable to such Loan, as specified by the Lender making such Loan in its related Competitive Bid.

“Material Adverse Effect” means, with respect to any Borrower, a material adverse effect on (i) the business, Property, condition (financial or otherwise), operations or results of operations of such Borrower, or such Borrower and its Subsidiaries taken as a whole, (ii) the ability of such Borrower to perform its obligations under the Loan Documents, or (iii) the validity or enforceability of any of the Loan Documents against such Borrower or the rights or remedies of the Agent or the Lenders thereunder.

“Material Indebtedness” means any Indebtedness (other than any Indebtedness incurred as part of any Permitted Securitization) in an outstanding principal amount of $25,000,000 or more in the aggregate (or the equivalent thereof in any currency other than Dollars).

“Material Indebtedness Agreement” means any agreement under which any Material Indebtedness was created or is governed or which provides for the incurrence of Indebtedness in an amount which would constitute Material Indebtedness (whether or not an amount of Indebtedness constituting Material Indebtedness is outstanding thereunder).

“Maturity Date” means (a) in the case of the Company, the Extended Commitment Termination Date, and (b) in the case of any Borrowing Subsidiary, June 29, 2010, or any date to which such Borrowing Subsidiary’s Maturity Date shall have been extended as provided in Section 2.23(b).

“Money Pool Agreements” means, collectively, (i) that certain Ameren Corporation System Utility Money Pool Agreement, dated as of March 25, 1999, by and among the Company, Ameren Services Company, Union Electric, CIPS, CILCO, IP and Resources, as

amended from time to time (including, without limitation, the addition of any of their Affiliates as parties thereto), and (ii) that certain Ameren Corporation System Non-Regulated Subsidiary Money Pool Agreement, dated as of February 27, 2003, by and among the Company, Ameren Services Company, Genco and certain Subsidiaries of the Company excluding Union Electric, CIPS, CILCO and IP, as amended from time to time (including, without limitation, the addition of any of their Affiliates, other than Union Electric, CIPS, CILCO and IP, as parties thereto).

“Multiemployer Plan” means, with respect to a Borrower or a Commonly Controlled Entity of such Borrower, a multiemployer plan, as defined in Section 4001(a)(3) of ERISA, to which either is required to contribute.

“Net Mark-to-Market Exposure” of a Person means, as of any date of determination, the excess (if any) of all unrealized losses over all unrealized profits of such Person arising from Rate Management Transactions. “Unrealized losses” means the fair market value of the cost to such Person of replacing such Rate Management Transaction as of the date of determination (assuming the Rate Management Transaction were to be terminated as of that date), and “unrealized profits” means the fair market value of the gain to such Person of replacing such Rate Management Transaction as of the date of determination (assuming such Rate Management Transaction were to be terminated as of that date).

“New Illinois Agreement” means the Credit Agreement, dated as of the Amendment Effective Date among the Company, CIPS, CILCO, IP, the lenders party thereto and JPMCB, as agent thereunder, as it may be amended, restated, supplemented or otherwise modified and as in effect from time to time.

“Non-Extended Commitment” means each Commitment that terminates on the Commitment Termination Date.

“Non-Material Subsidiary” means, with respect to any Borrower, any Subsidiary of such Borrower (a) the consolidated assets of which equal less than $10,000,000, and (b) the consolidated revenues of which equal less than $10,000,000, in each case as of the end of or for the most recent period of four consecutive fiscal quarters for which annual or quarterly financial statements of the Borrower have been filed with the SEC; provided that if at the end of the most recent fiscal quarter or for the most recent period of four consecutive fiscal quarters the combined consolidated assets or combined consolidated revenues of all Subsidiaries of a Borrower that under clauses (a) and (b) above would constitute Non-Material Subsidiaries shall have exceeded 1% of the consolidated total assets or 1% of the consolidated revenues of such Borrower and its Subsidiaries, then one or more of such excluded Subsidiaries shall for all purposes of this Agreement be deemed not to be Non-Material Subsidiaries with respect to such Borrower in descending order based on the amounts of their consolidated assets until such excess shall have been eliminated. A Subsidiary shall be deemed to be a Non-Material Subsidiary with respect to a Borrower only from and after the date on which such Subsidiary is expressly designated as a Non-Material Subsidiary by written notice to the Agent executed by an Authorized Officer of such Borrower or an Authorized Officer of the Company acting on behalf of such Borrower.

“Obligations” means, with respect to any Borrower, all Loans, reimbursement obligations in respect of LC Disbursements, advances, debts, liabilities, obligations, covenants and duties owing by such Borrower to the Agent, any Issuing Bank, any Lender, the Arrangers, any affiliate of the Agent, any Issuing Bank, any Lender or the Arrangers, or any indemnitee under the provisions of Section 9.6 or any other provisions of the Loan Documents, in each case of any kind or nature, present or future, arising under this Agreement or any other Loan Document, whether or not evidenced by any note, guaranty or other instrument, whether or not for the payment of money, whether arising by reason of an extension of credit, loan, foreign exchange risk, guaranty, indemnification, or in any other manner, whether direct or indirect (including those acquired by assignment), absolute or contingent, due or to become due, now existing or hereafter arising and however acquired. The term includes, without limitation, all interest, charges, expenses, fees, attorneys’ fees and disbursements, paralegals’ fees (in each case whether or not allowed), and any other sum chargeable to any Borrower under this Agreement or any other Loan Document.

“Off-Balance Sheet Liability” of a Person means the principal component of (i) any repurchase obligation or liability of such Person with respect to accounts or notes receivable sold by such Person, (ii) any liability under any Sale and Leaseback Transaction which is not a Capitalized Lease, (iii) any liability under any so-called “synthetic lease” or “tax ownership operating lease” transaction entered into by such Person, or (iv) any obligation arising with respect to any other transaction which is the functional equivalent of or takes the place of borrowing but which does not constitute a liability on the consolidated balance sheets of such Person, but excluding from this clause (iv) Operating Leases.

“Operating Lease” of a Person means any lease of Property (other than a Capitalized Lease) by such Person as lessee which has an original term (including any required renewals and any renewals effective at the option of the lessor) of one year or more.

“Original Credit Agreement” has the meaning assigned to such term in the preamble hereto.

“Outstanding Credit Exposure” means, as to any Lender at any time, the aggregate principal amount of its (i) Revolving Loans, (ii) Competitive Loans and (iii) LC Exposure outstanding at such time.

“Payment Date” means the last day of each March, June, September and December and the Facility Termination Date.

“PBGC” means the Pension Benefit Guaranty Corporation referred to and defined in ERISA and any successor entity performing similar functions.

“Peno Creek Project” means the Chapter 100 financing transaction and agreements related thereto entered into between Union Electric and the City of Bowling Green, Missouri (the “City”) pursuant to which (i) Union Electric conveyed to and leased from the City certain land and improvements including four combustion turbine generating units, and (ii) the City issued indebtedness (which was purchased by Union Electric) to finance the acquisition of such Property.

“Permitted Illinois Utility Combination” means one or more related transactions in which (a) any or all the Illinois Utilities merge, combine or consolidate with any other subsidiary of the Company (including any subsidiary formed for such purpose) and/or one another, (b) the resulting entity succeeds to all the assets and obligations of the constituent entities; provided that no Default or Unmatured Default shall have occurred and be continuing at the time of, or after giving effect to, the consummation of such transaction or transactions, and (c) such transaction shall comply in all respects with the requirements of the New Illinois Agreement.

“Permitted Securitization” means any sale, grant and/or contribution, or series of related sales, grants and/or contributions, by a Borrowing Subsidiary or any subsidiary of such Borrowing Subsidiary of Receivables to a trust, corporation or other entity, where the purchase of such Receivables is funded or exchanged in whole or in part by the incurrence or issuance by the purchaser, grantee or any successor entity of Indebtedness or securities that are to receive payments from, or that represent interests in, the cash flow derived primarily from such Receivables (provided, however, that “Indebtedness” as used in this definition shall not include Indebtedness incurred by an SPC owed to such Borrowing Subsidiary or to a subsidiary of such Borrowing Subsidiary which Indebtedness represents all or a portion of the purchase price or other consideration paid by the SPC for such receivables or interest therein), where (a) any recourse, repurchase, hold harmless, indemnity or similar obligations of such Borrowing Subsidiary or any subsidiary (other than any SPC that is a party to such transaction) of such Borrowing Subsidiary in respect of Receivables sold, granted or contributed, or payments made in respect thereof, are customary for transactions of this type, and do not prevent the characterization of the transaction as a true sale under applicable laws (including debtor relief laws), (b) any recourse, repurchase, hold harmless, indemnity or similar obligations of any SPC in respect of Receivables sold, granted or contributed or payments made in respect thereof, are customary for transactions of this type and (c) such securitization transaction is authorized pursuant to state legislation specifically authorizing such securitizations and, if such regulation so requires, by an order of the Missouri Public Service Commission.

“Person” means any natural person, corporation, firm, joint venture, partnership, limited liability company, association, enterprise, trust or other entity or organization, or any government or political subdivision or any agency, department or instrumentality thereof.

“Plan” means, with respect to any Borrower or a Commonly Controlled Entity of such Borrower at a particular time, any employee benefit plan (other than a Multiemployer Plan) which is covered by ERISA or Section 412 of the Code and in respect of which such Borrower or a Commonly Controlled Entity is (or, if such plan were terminated at such time, would under Section 4069 of ERISA be deemed to be) an “employer” as defined in Section 3(5) of ERISA.

“Pricing Schedule” means the Schedule identifying the Applicable Margin and Applicable Fee Rate attached hereto and identified as such.

“Prime Rate” means a rate per annum equal to the prime rate of interest announced from time to time by JPMCB (which is not necessarily the lowest rate charged to any customer), changing when and as said prime rate changes.

“Pro Rata Share” means, with respect to a Lender, a portion equal to a fraction the numerator of which is such Lender’s Commitment at such time and the denominator of which is the Aggregate Commitment at such time (in each case, as such Commitments and Aggregate Commitments are adjusted from time to time in accordance with the provisions of this Agreement). If the Aggregate Commitment has been terminated, each Lender’s Pro Rata Share shall be a fraction the numerator of which is such Lender’s Outstanding Credit Exposure at such time and the denominator of which is the Aggregate Outstanding Credit Exposure at such time (and if there shall be no Outstanding Credit Exposures at such time, the Lenders’ Pro Rata Shares shall be determined on the basis of the Outstanding Credit Exposures then most recently in effect).

“Project Finance Subsidiary” means any Subsidiary created for the purpose of obtaining non-recourse financing for any operating asset that is the sole and direct obligor of Indebtedness incurred in connection with such financing. A Subsidiary shall be deemed to be a Project Finance Subsidiary only from and after the date on which such Subsidiary is expressly designated as a Project Finance Subsidiary to the Agent by written notice executed by an Authorized Officer; provided that in no event shall any Borrowing Subsidiary be designated or deemed a Project Finance Subsidiary.

“Property” of a Person means any and all property, whether real, personal, tangible, intangible, or mixed, of such Person, or other assets owned, leased or operated by such Person.

“Rate Management Transaction” means any transaction linked to one or more interest rates, foreign currencies, or equity prices (including an agreement with respect thereto) now existing or hereafter entered by a Borrower or a Subsidiary (other than a Project Finance Subsidiary) which is a rate swap, basis swap, forward rate transaction, equity or equity index swap, equity or equity index option, bond option, interest rate option, foreign exchange transaction, cap transaction, floor transaction, collar transaction, forward transaction, currency swap transaction, cross-currency rate swap transaction, currency option or any other similar transaction (including any option with respect to any of these transactions) or any combination thereof.

“Receivables” shall mean any accounts receivable, payment intangibles, notes receivable, right to receive future payments and related rights of a Borrowing Subsidiary or any subsidiary of such Borrowing Subsidiary in respect of the recovery of deferred power supply costs and/or other costs through charges applied and invoiced to customers of such Borrowing Subsidiary or such subsidiary, as authorized by an order of a public utilities commission pursuant to state legislation specifically authorizing the securitization thereof, or any interests therein.

“Regulation D” means Regulation D of the Board of Governors of the Federal Reserve System as from time to time in effect and any successor thereto or other regulation or official interpretation of said Board of Governors relating to reserve requirements applicable to member banks of the Federal Reserve System.

“Regulation U” means Regulation U of the Board of Governors of the Federal Reserve System as from time to time in effect and any successor or other regulation or official interpretation of said Board of Governors relating to the extension of credit by banks, non-banks and non-broker lenders for the purpose of purchasing or carrying margin stocks applicable to member banks of the Federal Reserve System.

“Regulation X” means Regulation X of the Board of Governors of the Federal Reserve System as from time to time in effect and any successor or other regulation or official interpretation of said Board of Governors relating to the extension of credit by foreign lenders for the purpose of purchasing or carrying margin stock (as defined therein).

“Reportable Event” means any of the events set forth in Section 4043(c) of ERISA or the regulations issued under Section 4043 of ERISA, other than those events as to which the thirty day notice period is waived under Sections .21, .22, .23, .26, .27 or .28 of PBGC Reg. § 4043.

“Required Lenders” means Lenders in the aggregate having greater than fifty percent (50%) of the Aggregate Commitment; provided that for purposes of declaring the Loans to be due and payable pursuant to Article VIII and for all purposes after the Loans have become due and payable pursuant to Article VIII and the Aggregate Commitment has been terminated, “Required Lenders” shall mean Lenders in the aggregate holding greater than fifty percent (50%) of the Aggregate Outstanding Credit Exposure.

“Reserve Requirement” means, with respect to an Interest Period, the maximum aggregate reserve requirement (including all basic, supplemental, marginal and other reserves) which is imposed under Regulation D on “Eurocurrency liabilities” (as defined in Regulation D).

“Resources” means AmerenEnergy Resources Generating Company, an Illinois corporation and a subsidiary of the Company.

“Resources Permitted Debt” means Indebtedness of Resources under one or more Resources Permitted Financings in an aggregate principal amount for all such Indebtedness at any time outstanding not to exceed $300,000,000.

“Resources Permitted Financing” means a revolving or term loan facility entered into by Resources with a non-Affiliate of the Company or a note or bond issuance by Resources providing for general working capital and financing needs (as opposed to financing the acquisition, construction or lease of specific equipment or premises); provided that no Borrower or Subsidiary shall have provided a guarantee with respect to such Indebtedness or otherwise be liable for repayment of any obligations with respect to such facility or issuance.

“Revolving Credit Exposure” means, with respect to any Lender at any time, the sum of the outstanding principal amount of such Lender’s Revolving Loans and such Lender’s LC Exposure at such time.

“Revolving Loan” means, with respect to a Lender, such Lender’s loan made pursuant to its commitment to lend set forth in Section 2.1 (and any conversion or continuation thereof).

“S&P” means Standard and Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc. and any successor thereto.

“Sale and Leaseback Transaction” means any sale or other transfer of Property by any Person with the intent to lease such Property as lessee.

“Schedule” refers to a specific schedule to this Agreement, unless another document is specifically referenced.

“Section” means a numbered section of this Agreement, unless another document is specifically referenced.

“SPC” means a special purpose, bankruptcy-remote Person formed for the sole and exclusive purpose of engaging in activities in connection with the purchase, sale and financing of Receivables in connection with and pursuant to a Permitted Securitization.

“subsidiary” of a Person means (i) any corporation more than 50% of the outstanding securities having ordinary voting power of which shall at the time be owned or controlled, directly or indirectly, by such Person or by one or more of its Subsidiaries or by such Person and one or more of its Subsidiaries, or (ii) any partnership, limited liability company, association, joint venture or similar business organization more than 50% of the ownership interests having ordinary voting power of which shall at the time be so owned or controlled.

“Subsidiary” means, with respect to each Borrower, any subsidiary of such Borrower; provided that, in the case of the Company, “Subsidiary” means only each subsidiary of the Company other than CILCORP, the Illinois Utilities, the subsidiaries of CILCORP and the subsidiaries of the Illinois Utilities. Unless otherwise expressly provided, all references herein to a “Subsidiary” shall mean a Subsidiary (as defined above) of the Company.

“Subsidiary Sublimit” means (a) as to Genco, $150,000,000 and (b) as to Union Electric, $500,000,000 or, in the case of any Borrowing Subsidiary, any lesser amount to which the Subsidiary Sublimit of such Borrowing Subsidiary shall have been reduced pursuant to Section 2.8.3.

“Substantial Portion” means, with respect to the Property of a Borrower and its Subsidiaries, Property which represents more than 10% of the consolidated assets of such Borrower and its Subsidiaries or property which is responsible for more than 10% of the consolidated net sales or of the consolidated net income of such Borrower and its Subsidiaries, in each case, as would be shown in the consolidated financial statements of such Borrower and its Subsidiaries as at the end of the four fiscal quarter period ending with the fiscal quarter immediately prior to the fiscal quarter in which such determination is made (or if financial statements have not been delivered hereunder for that fiscal quarter which ends the four fiscal quarter period, then the financial statements delivered hereunder for the quarter ending immediately prior to that quarter).

“Supplemental Credit Agreement” means the Supplemental Credit Agreement dated as of the Amendment Effective Date among the Borrowers, certain of the Lenders and the Agent, as amended from time to time.

“Taxes” means any and all present or future taxes, duties, levies, imposts, deductions, charges or withholdings, and any and all liabilities with respect to the foregoing, but excluding Excluded Taxes.

“2005 Act” means the Public Utility Holding Company Act of 2005, as it may be amended (together with all rules, regulations and orders promulgated or otherwise issued in connection therewith).

“Type” means, with respect to any Advance, its nature as a Fixed Rate Advance, Floating Rate Advance or Eurodollar Advance.

“Union Electric” means Union Electric Company d/b/a AmerenUE, a Missouri corporation and a Subsidiary of the Company.

“Unmatured Default” means an event which but for the lapse of time or the giving of notice, or both, would constitute a Default.

“USA Patriot Act” means the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001.

“U.S. Person” means a “United States person” within the meaning of Section 7701(a)(30) of the Code.

1.2. Plural Forms. The foregoing definitions shall be equally applicable to both the singular and plural forms of the defined terms.

2.1. Commitment. Subject to the satisfaction of the conditions precedent set forth in Section 4.1 and 4.2, as applicable, each Lender severally and not jointly agrees, on the terms and conditions set forth in this Agreement, to make Revolving Loans to each Borrower from time to time from and including the Closing Date and prior to the Availability Termination Date for such Borrower in an amount not to exceed its Pro Rata Share of the Available Aggregate Commitment; provided that (i) at no time shall the Aggregate Outstanding Credit Exposure exceed the Aggregate Commitment, (ii) at no time shall the Revolving Credit Exposure of any Lender exceed its Commitment and (iii) at no time shall the Borrower Credit Exposure of any Borrower exceed the Borrower Sublimit of such Borrower. Subject to the terms of this Agreement, each Borrower may, severally and not jointly with the other Borrowers, borrow, repay and reborrow Revolving Loans at any time prior to the Availability Termination Date for such Borrower. The commitment of each Lender to lend to each Borrower hereunder shall automatically expire on the Availability Termination Date for such Borrower.

2.2. Required Payments; Termination. Each Borrower, severally and not jointly with the other Borrowers, hereby unconditionally promises to pay (i) to the Agent for the account of each Lender the then unpaid principal amount of each Revolving Loan made by such Lender to such Borrower on the Availability Termination Date for such Borrower, and (ii) to the Agent for the account of each Lender the then unpaid principal amount of each Competitive Loan made by such Lender to such Borrower on the last day of the Interest Period applicable to such Loan, which shall not be later than the Availability Termination Date for such Borrower. Notwithstanding the termination of the Commitments under this Agreement, until all of the Obligations of each Borrower (other than contingent indemnity obligations) shall have been fully paid and satisfied and all financing arrangements between each Borrower and the Lenders hereunder and under the other Loan Documents shall have been terminated, all of the rights and remedies with respect to such Borrower and its Obligations under this Agreement and the other Loan Documents shall survive.

2.3. Loans. Each Advance hereunder shall consist of (a) Revolving Loans made by the Lenders ratably in accordance with their Pro Rata Shares of the Aggregate Commitment or (b) Competitive Loans.

(a)Subject to the terms and conditions set forth herein, each Borrower may request Competitive Bids and may (but shall not have any obligation to) accept Competitive Bids and borrow Competitive Loans from time to time prior to the Availability Termination Date for such Borrower; provided that (i) the Aggregate Outstanding Credit Exposure at any time shall not exceed the Aggregate Commitment and (ii) at no time shall the Borrower Credit Exposure of any Borrower exceed the Borrower Sublimit of such Borrower. Within the foregoing limits and subject to the terms and conditions set forth herein, each Borrower may, severally and not jointly with the other Borrowers, borrow, repay and reborrow Competitive Loans.

(b) To request Competitive Bids, the applicable Borrower shall notify the Agent of such request by telephone, in the case of a Eurodollar Rate Advance, not later than 11:00 a.m., New York time, four Business Days before the date of the proposed Advance and, in the case of a Fixed Rate Advance, not later than 10:00 a.m., New York time, one Business Day before the date of the proposed Advance; provided that each Borrower may submit up to (but not more than) two Competitive Bid Requests on the same day, but a Competitive Bid Request shall not be made within five Business Days after the date of any previous Competitive Bid Request, unless any and all such previous Competitive Bid Requests shall have been withdrawn or all Competitive Bids received in response thereto rejected. Each such telephonic Competitive Bid Request shall be confirmed promptly by hand delivery or telecopy to the Agent of a written Competitive Bid Request in a form approved by the Agent and signed by the applicable Borrower. Each such telephonic and written Competitive Bid Request shall specify the following information:

Promptly following receipt of a Competitive Bid Request in accordance with this Section, the Agent shall notify the Lenders of the details thereof by telecopy, inviting the Lenders to submit Competitive Bids.

(c) Each Lender may (but shall not have any obligation to) make one or more Competitive Bids to the applicable Borrower in response to a Competitive Bid Request. Each Competitive Bid by a Lender must be in a form approved by the Agent and must be received by the Agent by telecopy, in the case of a Eurodollar Rate Advance, not later than 10:30 a.m., New York time, three Business Days before the proposed date of such Advance, and in the case of a Fixed Rate Advance, not later than 10:30 a.m., New York time, on the proposed date of such Advance. Competitive Bids that do not conform substantially to the form approved by the Agent may be rejected by the Agent, and the Agent shall notify the applicable Lender as promptly as practicable. Each Competitive Bid shall specify (i) the principal amount (which shall be a minimum of $5,000,000 and an integral multiple of $1,000,000 and which may equal the entire principal amount of the Advance requested by such Borrower) of the Competitive Loan or Loans that the Lender is willing to make, (ii) the Competitive Bid Rate or Rates at which the Lender is prepared to make such Loan or Loans (expressed as a percentage rate per annum in the form of a decimal to no more than four decimal places) and (iii) the Interest Period applicable to each such Loan and the last day thereof.

(d) The Agent shall promptly notify the applicable Borrower by telecopy of the Competitive Bid Rate and the principal amount specified in each Competitive Bid and the identity of the Lender that shall have made such Competitive Bid.

(e) Subject only to the provisions of this paragraph, the applicable Borrower may accept or reject any Competitive Bid. Such Borrower shall notify the Agent by telephone, confirmed by telecopy in a form approved by the Agent, whether and to what extent it has decided to accept or reject each Competitive Bid, in the case of a Eurodollar Rate Advance, not later than 10:30 a.m., New York time, three Business Days before the date of the proposed Advance, and in the case of a Fixed Rate Advance, not later than 10:30 a.m., New York time, on the proposed date of the Advance; provided that (i) the failure of a Borrower to give such notice shall be deemed to be a rejection of each Competitive Bid, (ii) a Borrower shall not accept a Competitive Bid made at a particular Competitive Bid Rate if such Borrower rejects a Competitive Bid made at a lower Competitive Bid Rate, (iii) the aggregate amount of the Competitive Bids accepted by a Borrower shall not exceed the aggregate amount of the requested Advance specified in the related Competitive Bid Request, (iv) to the extent necessary to comply with clause (iii) above, a Borrower may accept Competitive Bids at the same Competitive Bid Rate in part, which acceptance, in the case of multiple Competitive Bids at such Competitive Bid Rate, shall be made pro rata in accordance with the amount of each such Competitive Bid, and (v) except pursuant to clause (iv) above, no Competitive Bid shall be accepted for a Competitive Loan unless such Competitive Loan is in a minimum principal amount of $5,000,000 and an integral multiple of $1,000,000; provided further that if a Competitive Loan must be in an amount less than $5,000,000 because of the provisions of clause (iv) above, such Competitive Loan may be for a minimum of $1,000,000 or any integral multiple thereof, and in calculating the pro rata allocation of acceptances of portions of multiple Competitive Bids at a particular Competitive Bid Rate pursuant to clause (iv) the amounts shall be rounded to integral multiples of $1,000,000 in a manner determined by the applicable Borrower. A notice given by a Borrower pursuant to this paragraph shall be irrevocable.

(f) The Agent shall promptly notify each bidding Lender by telecopy whether or not its Competitive Bid has been accepted (and, if so, the amount and Competitive Bid Rate so accepted), and each successful bidder will thereupon become bound, subject to the terms and conditions hereof, to make the Competitive Loan in respect of which its Competitive Bid has been accepted.

(g) If the Agent shall elect to submit a Competitive Bid in its capacity as a Lender, it shall submit such Competitive Bid directly to the applicable Borrower at least one quarter of an hour earlier than the time by which the other Lenders are required to submit their Competitive Bids to the Agent pursuant to paragraph (c) of this Section.

(a) General. Subject to the terms and conditions set forth herein, (i) each Borrower may request the issuance of Letters of Credit for its own account and (ii) the Company may request the issuance of Letters of Credit for its own account and, jointly, for the account of any

of its subsidiaries (other than Union Electric, Genco or any Illinois Utility) (and in each case under this clause (ii), the Company shall be considered the sole Borrower under such Letter of Credit for purposes of this Agreement notwithstanding any listing of any subsidiary of the Company as an account party or applicant with respect to such Letter of Credit), in each case in a form reasonably acceptable to the Agent and the applicable Issuing Bank, at any time and from time to time prior to the Availability Termination Date for such Borrower (with respect to any Letter of Credit referred to in clause (i) of this sentence) or the Company (with respect to any Letter of Credit referred to in clause (ii) of this sentence), as the case may be. In the event of any inconsistency between the terms and conditions of this Agreement and the terms and conditions of any form of letter of credit application or other agreement submitted by a Borrower to, or entered into by a Borrower with, an Issuing Bank relating to any Letter of Credit, the terms and conditions of this Agreement shall control. The Company unconditionally and irrevocably agrees that, in connection with any Letter of Credit referred to in clause (ii) of the first sentence of this paragraph, it will be fully responsible for the reimbursement of LC Disbursements, the payment of interest thereon and the payment of LC Participation Fees and other fees due under Section 2.8.2 to the same extent as if it were the sole account party in respect of such Letter of Credit (the Company hereby irrevocably waiving any defenses that might otherwise be available to it as a guarantor of the obligations of any subsidiary that shall be a joint account party in respect of any such Letter of Credit).

(b) Notice of Issuance, Amendment, Renewal, Extension; Certain Conditions. To request the issuance of a Letter of Credit (or the amendment, renewal or extension of an outstanding Letter of Credit), the applicable Borrower shall hand deliver or telecopy (or transmit by electronic communication, if arrangements for doing so have been approved by the applicable Issuing Bank) to the applicable Issuing Bank and the Agent (reasonably in advance of the requested date of issuance, amendment, renewal or extension) a notice requesting the issuance of a Letter of Credit, or identifying the Letter of Credit to be amended, renewed or extended, and specifying the date of issuance, amendment, renewal or extension (which shall be a Business Day), the date on which such Letter of Credit is to expire (which shall comply with paragraph (c) of this Section), the amount of such Letter of Credit, the account party or account parties with respect to such Letter of Credit, the name and address of the beneficiary thereof and such other information as shall be necessary to prepare, amend, renew or extend such Letter of Credit. If requested by the applicable Issuing Bank, such Borrower also shall submit a letter of credit application on such Issuing Bank’s standard form in connection with any request for a Letter of Credit. A Letter of Credit shall be issued, amended, renewed or extended only if (and upon issuance, amendment, renewal or extension of each Letter of Credit, such Borrower shall be deemed to represent and warrant that), after giving effect to such issuance, amendment, renewal or extension (i) the Aggregate Outstanding Credit Exposure will not exceed the Aggregate Commitment, (ii) the Revolving Credit Exposure of any Lender will not exceed its Commitment, (iii) the Borrower Credit Exposure of any Borrower will not exceed the Borrower Sublimit of such Borrower, (iv) the portion of the LC Exposure attributable to Letters of Credit issued by the applicable Issuing Bank will not exceed the LC Commitment of such Issuing Bank, (v) if the Commitment Termination Date shall not have yet occurred, the portion of the LC Exposure attributable to Letters of Credit with expiry dates after the Commitment Termination Date will not exceed the aggregate amount of the Extended Commitments and (vi) the LC Exposure will not exceed $287,500,000. If the Required Lenders notify the Issuing Banks that a Default exists with respect to any Borrower and instruct the Issuing Banks to

suspend the issuance, amendment, renewal or extension of Letters of Credit for the account of such Borrower, no Issuing Bank shall issue, amend, renew or extend any Letter of Credit for the account of such Borrower or the Company without the consent of the Required Lenders until such notice is withdrawn by the Required Lenders (and each Lender that shall have delivered such notice agrees promptly to withdraw it at such time as no Default exists).

(c) Expiration Date. Each Letter of Credit shall expire at or prior to the close of business on the earlier of (i) the date one year after the date of the issuance of such Letter of Credit (or, in the case of any renewal or extension thereof, one year after such renewal or extension) and (ii) the date that is five Business Days prior to the Availability Termination Date for the applicable Borrower; provided that, with the prior consent of the Agent and the applicable Issuing Bank, a Letter of Credit may be extended beyond the fifth Business Day prior to the Availability Termination Date for the applicable Borrower so long as the applicable Borrower has deposited in an account with the Agent, in the name of the Agent and for the benefit of the Lenders and such Issuing Bank, as cash collateral pursuant to documentation reasonably satisfactory to the Agent and such Issuing Bank, an amount in cash equal to the aggregate amount of all of its outstanding Letters of Credit with an expiration date later than the fifth Business Day prior to the Availability Termination Date for the applicable Borrower.

(d) Participations. By the issuance of a Letter of Credit (or an amendment to a Letter of Credit increasing the amount thereof) and without any further action on the part of the applicable Issuing Bank or the Lenders, such Issuing Bank hereby grants to each Lender, and each Lender hereby acquires from such Issuing Bank, a participation in such Letter of Credit equal to such Lender’s Pro Rata Share of the aggregate amount available to be drawn under such Letter of Credit. In consideration and in furtherance of the foregoing, each Lender hereby absolutely and unconditionally agrees to pay to the Agent, for the account of such Issuing Bank, such Lender’s Pro Rata Share of each LC Disbursement made by such Issuing Bank and not reimbursed by the applicable Borrower on the date due as provided in paragraph (e) of this Section, or of any reimbursement payment required to be refunded to the applicable Borrower for any reason. Each Lender acknowledges and agrees that its obligation to acquire participations pursuant to this paragraph in respect of Letters of Credit is absolute and unconditional and shall not be affected by any circumstance whatsoever, including any amendment, renewal or extension of any Letter of Credit or the occurrence and continuance of a Default or reduction or termination of the Commitments, and that each such payment shall be made without any offset, abatement, withholding or reduction whatsoever.

(e) Reimbursement. If an Issuing Bank shall make any LC Disbursement in respect of a Letter of Credit, the applicable Borrower shall reimburse such LC Disbursement by paying to the Agent an amount equal to such LC Disbursement not later than 12:00 noon, New York City time, on the date that such LC Disbursement is made, if such Borrower shall have received notice of such LC Disbursement prior to 10:00 a.m., New York City time, on such date, or, if such notice has not been received by such Borrower prior to such time on such date, then not later than 12:00 noon, New York City time, on (i) the Business Day that such Borrower receives such notice, if such notice is received prior to 10:00 a.m., New York City time, on the day of receipt, or (ii) the Business Day immediately following the day that such Borrower receives such notice, if such notice is not received prior to such time on the day of receipt; provided that, if such LC Disbursement is not less than $1,000,000, such Borrower may, subject

to the conditions to borrowing set forth herein, request in accordance with Section 2.1 that such payment be financed with a Floating Rate Advance in an equivalent amount and, to the extent so financed, such Borrower’s obligation to make such payment shall be discharged and replaced by the resulting Floating Rate Advance. If such Borrower fails to make such payment when due, the Agent shall notify each Lender of the applicable LC Disbursement, the payment then due from such Borrower in respect thereof and such Lender’s Pro Rata Share thereof. Promptly following receipt of such notice, each Lender shall pay to the Agent its Pro Rata Share of the payment then due from such Borrower, in the same manner as provided in Section 2.11 with respect to Loans made by such Lender (and Section 2.11 shall apply, mutatis mutandis, to the payment obligations of the Lenders), and the Agent shall promptly pay to such Issuing Bank the amounts so received by it from the Lenders. Promptly following receipt by the Agent of any payment from such Borrower pursuant to this paragraph, the Agent shall distribute such payment to such Issuing Bank or, to the extent that Lenders have made payments pursuant to this paragraph to reimburse such Issuing Bank, then to such Lenders and such Issuing Bank as their interests may appear. Any payment made by a Lender pursuant to this paragraph to reimburse an Issuing Bank for any LC Disbursement (other than the funding of a Floating Rate Advance as contemplated above) shall not constitute a Loan and shall not relieve such Borrower of its obligation to reimburse such LC Disbursement.

(f) Obligations Absolute. Each Borrower’s obligation to reimburse LC Disbursements as provided in paragraph (e) of this Section shall be several, shall be absolute, unconditional and irrevocable, and shall be performed strictly in accordance with the terms of this Agreement under any and all circumstances whatsoever and irrespective of (i) any lack of validity or enforceability of any Letter of Credit or this Agreement, or any term or provision therein, (ii) any draft or other document presented under a Letter of Credit proving to be forged, fraudulent or invalid in any respect or any statement therein being untrue or inaccurate in any respect, (iii) payment by an Issuing Bank under a Letter of Credit against presentation of a draft or other document that does not comply with the terms of such Letter of Credit, or (iv) any other event or circumstance whatsoever, whether or not similar to any of the foregoing, that might, but for the provisions of this Section, constitute a legal or equitable discharge of, or provide a right of setoff against, such Borrower’s obligations hereunder. None of the Agent, the Lenders or the Issuing Banks, or any of their respective affiliates, directors, officers or employees, shall have any liability or responsibility by reason of or in connection with the issuance or transfer of any Letter of Credit or any payment or failure to make any payment thereunder (irrespective of any of the circumstances referred to in the preceding sentence), or any error, omission, interruption, loss or delay in transmission or delivery of any draft, notice or other communication under or relating to any Letter of Credit (including any document required to make a drawing thereunder), any error in interpretation of technical terms or any consequence arising from causes beyond the control of the applicable Issuing Bank; provided that the foregoing shall not be construed to excuse an Issuing Bank from liability to a Borrower to the extent of any direct damages (as opposed to consequential damages, claims in respect of which are hereby waived by each Borrower to the extent permitted by applicable law) suffered by such Borrower that are caused by such Issuing Bank’s wrongful honor or rejection of any such Letter of Credit to the extent arising out of the Issuing Banks’ gross negligence or willful misconduct (as finally determined by a court of competent jurisdiction). In furtherance of the foregoing and without limiting the generality thereof, but subject to any non-waivable provisions of the laws and/or other rules to which a Letter of Credit is subject, the parties agree

that, with respect to documents presented which appear on their face to be in substantial compliance with the terms of a Letter of Credit, an Issuing Bank may, in its sole discretion, either accept and make payment upon such documents without responsibility for further investigation, regardless of any notice or information to the contrary, or refuse to accept and make payment upon such documents if such documents are not in strict compliance with the terms of such Letter of Credit.

(g) Disbursement Procedures. The applicable Issuing Bank shall, promptly following its receipt thereof, examine all documents purporting to represent a demand for payment under a Letter of Credit. Such Issuing Bank shall promptly notify the Agent and the applicable Borrower by telephone (confirmed by telecopy) of such demand for payment and whether such Issuing Bank has made or will make an LC Disbursement thereunder; provided that any failure to give or delay in giving such notice shall not relieve such Borrower of its obligation to reimburse such Issuing Bank and the Lenders with respect to any such LC Disbursement.

(h) Interim Interest. If an Issuing Bank shall make any LC Disbursement, then, unless the applicable Borrower shall reimburse such LC Disbursement in full on the date such LC Disbursement is made, the unpaid amount thereof shall bear interest, for each day from and including the date such LC Disbursement is made to but excluding the date that such Borrower reimburses such LC Disbursement, at the rate per annum then applicable to Floating Rate Advances; provided that, if such Borrower fails to reimburse such LC Disbursement when due pursuant to paragraph (e) of this Section, then Section 2.14 shall apply. Interest accrued pursuant to this paragraph shall be for the account of such Issuing Bank, except that interest accrued on and after the date of payment by any Lender pursuant to paragraph (e) of this Section to reimburse such Issuing Bank shall be for the account of such Lender to the extent of such payment.

(i) Cash Collateralization. If any Default with respect to a Borrower shall occur and be continuing, on the Business Day that such Borrower receives notice from the Agent or the Required Lenders (or, if the maturity of the Loans has been accelerated, Lenders with LC Exposures representing greater than 50% of the total LC Exposure) demanding the deposit of cash collateral pursuant to this paragraph, such Borrower shall deposit in an account with the Agent, in the name of the Agent and for the benefit of the Lenders, an amount in cash equal to the portion of the LC Exposure as of such date attributable to Letters of Credit issued for the account of such Borrower; provided that the obligation to deposit such cash collateral shall become effective immediately, and such deposit shall become immediately due and payable, without demand or other notice of any kind, upon the occurrence of any Default with respect to such Borrower described in Sections 7.6 or 7.7. Such deposit shall be held by the Agent as collateral for the payment and performance of the Obligations of such Borrower under this Agreement. The Agent shall have exclusive dominion and control, including the exclusive right of withdrawal, over such account. Other than any interest earned on the investment of such deposits, which investments shall be made only if and to the extent requested by such Borrower and then only at the option and sole discretion of the Agent, and all at such Borrower’s risk and expense, such deposits shall not bear interest. Interest or profits, if any, on such investments shall accumulate in such account. Moneys in such account shall be applied by the Agent to reimburse each Issuing Bank for LC Disbursements under Letters of Credit issued for the account of such Borrower for which it has not been reimbursed and, to the extent not so

applied, shall be held for the satisfaction of future reimbursement obligations under Letters of Credit issued for the account of such Borrower or, if the maturity of the Loans has been accelerated (but subject to the consent of Lenders with LC Exposures representing greater than 50% of the total LC Exposure), be applied to satisfy other Obligations of such Borrower under this Agreement. If any Borrower is required to provide an amount of cash collateral hereunder as a result of the occurrence of a Default with respect to such Borrower, such amount (to the extent not applied as aforesaid) shall be returned to such Borrower within three Business Days after all Defaults with respect to such Borrower have been cured or waived. If at any time the cash collateral of any Borrower shall exceed such portion of the LC Exposure as of such date attributable to Letters of Credit issued for the account of such Borrower, the Agent shall apply such excess funds to the payment of such Borrower’s Obligations or (i) if no such Obligations are then due and owing and no Default with respect to such Borrower shall exist, shall release such excess funds to such Borrower or (ii) if no such Obligations are outstanding (other than contingent Obligations in respect of Letters of Credit which are fully collateralized), such excess amount shall be released to such Borrower notwithstanding the existence of a Default in respect of such Borrower.

(j) Designation of Additional Issuing Banks. From time to time, the Borrowers may by notice to the Agent and the Lenders designate as additional Issuing Banks one or more Lenders that agree to serve in such capacity as provided below. The acceptance by a Lender of any appointment as an Issuing Bank hereunder shall be evidenced by an agreement (an “Issuing Bank Agreement”), which shall be in a form satisfactory to the Borrowers and the Agent, shall set forth the LC Commitment of such Lender and shall be executed by such Lender, the Borrowers and the Agent and, from and after the effective date of such agreement, (i) such Lender shall have all the rights and obligations of an Issuing Bank under this Agreement and the other Loan Documents and (ii) references herein and in the other Loan Documents to the term “Issuing Bank” shall be deemed to include such Lender in its capacity as an Issuing Bank.

2.7. Types of Advances. Revolving Advances may be Floating Rate Advances or Eurodollar Advances, or a combination thereof, selected by the applicable Borrower in accordance with Sections 2.11 and 2.12. Competitive Loans may be Eurodollar Rate Advances or Fixed Rate Advances, or a combination thereof, selected by the applicable Borrower in accordance with Section 2.4.

2.8. Facility Fee; Letter of Credit Fees; Reductions in Aggregate Commitment and Borrower Sublimits.

2.8.1 Facility Fee. Each of the Borrowers agrees, severally and not jointly, to pay to the Agent for the account of each Lender a facility fee (the “Facility Fee”) at a per annum rate equal to, in the case of each Borrower, the Applicable Fee Rate for it on its Contribution Percentage of such Lender’s Non-Extended Commitment and Extended Commitment (whether used or unused) from and including the Closing Date to and including the first date following the Amendment Effective Date on which such Borrower’s Borrower Credit Exposure shall be zero and the Borrower Sublimit of such Borrower shall be reduced to zero pursuant to Section 2.8.3, payable quarterly in arrears on each Payment Date hereafter and on the Facility Termination

Date, provided that, if any Lender continues to have Revolving Credit Exposure outstanding in respect of any Commitment hereunder after the termination of such Commitment (including, without limitation, during any period when Loans or Letters of Credit may be outstanding but new Loans or Letters of Credit may not be borrowed or issued hereunder under a class of Commitments), then the Facility Fee shall continue to accrue on the aggregate principal amount of the Revolving Credit Exposure of such Lender incurred in respect of such Commitment until such Lender ceases to have any Revolving Credit Exposure in respect of such Commitment and shall be payable on demand.

2.8.2 Letter of Credit Fees. Each Borrower agrees, severally and not jointly with the other Borrowers, to pay (i) to the Agent for the account of each Lender a participation fee with respect to its participations in Letters of Credit issued for the account of such Borrower (the “LC Participation Fee”), which shall accrue at the Applicable Fee Rate on the average daily amount of that portion of such Lender’s LC Exposure (excluding any portion thereof attributable to unreimbursed LC Disbursements) attributable to Letters of Credit issued for the account of such Borrower during the period from and including the Closing Date to but excluding the later of the date on which such Lender’s Commitment terminates and the date on which such Lender ceases to have any such LC Exposure, and (ii) to each Issuing Bank a fronting fee, which shall accrue at the rate or rates per annum separately agreed upon between such Borrower and such Issuing Bank on the average daily amount of the LC Exposure attributable to Letters of Credit issued by such Issuing Bank for the account of such Borrower (excluding any portion thereof attributable to unreimbursed LC Disbursements) during the period from and including the Closing Date to but excluding the later of the date of termination of such Issuing Bank’s LC Commitments and the date on which there ceases to be any such LC Exposure attributable to Letters of Credit issued by such Issuing Bank for such Borrower, as well as each Issuing Bank’s standard fees with respect to the issuance, amendment, renewal or extension of any Letter of Credit issued by such Issuing Bank for the account of such Borrower or processing of drawings thereunder. LC Participation Fees and fronting fees accrued through and including the last day of March, June, September and December of each year shall be payable on the third Business Day following such last day, commencing on the first such date to occur after the Closing Date; provided that all such fees accrued for the account of any Borrower shall be payable on the Availability Termination Date for such Borrower and any such fees accruing after the Availability Termination Date for such Borrower shall be payable on demand. Any other fees payable to an Issuing Bank pursuant to this paragraph shall be payable promptly upon receipt of an invoice therefor.

2.8.3 Termination of and Reductions in Aggregate Commitment and Borrower Sublimits. The Non-Extended Commitments of each Declining Lender will automatically terminate on the Commitment Termination Date. The Aggregate Commitment and the Extended Commitments of each Consenting Lender will automatically terminate on the Extended Commitment Termination Date. The Company (on behalf of itself and all the other Borrowers) may permanently reduce the Aggregate Commitment (with or without reducing any Borrower Sublimit) and each Borrowing Subsidiary, or the Company on such Borrowing Subsidiary’s behalf, may permanently reduce its respective Borrower Sublimit (with or without reducing the Aggregate Commitment), in each case, in whole or in part and without penalty or premium, ratably among the Lenders in integral multiples of $5,000,000, upon at least three (3) Business Days’ written notice to the Agent, which notice shall specify, as applicable (a) the aggregate amount of any such reduction and/or (b) the individual amount by which the applicable Borrower Sublimits shall be reduced, provided, however, that (i) the amount of the Aggregate Commitment may not be reduced below the Aggregate Outstanding Credit Exposure and (ii) the Borrower Sublimit of any Borrower may not be reduced below the Borrower Credit Exposure of such Borrower. Any reduction of the Aggregate Commitment under this Section (other than the first sentence hereof) shall, as provided in Section 2.23(a), reduce ratably the Commitments of all the Lenders, whether such Commitments are Extended Commitments or Non-Extended Commitments.

2.9. Minimum Amount of Each Advance. Each Eurodollar Advance shall be in the minimum amount of $5,000,000 (and in multiples of $1,000,000 if in excess thereof), and each Floating Rate Advance shall be in the minimum amount of $5,000,000 (and in multiples of $1,000,000 if in excess thereof), provided, however, that (i) any Floating Rate Advance may be in the amount of the Available Aggregate Commitment and (ii) any Floating Rate Advance to a Borrower may be in the amount equal to the lesser of the Available Aggregate Commitment and the amount by which the Borrower Sublimit of such Borrower exceeds the Borrower Credit Exposure of such Borrower.

2.10. Optional Principal Payments. Each Borrower may from time to time pay, without penalty or premium, all outstanding Floating Rate Advances of such Borrower, or any portion of such outstanding Floating Rate Advances, in a minimum aggregate amount of $1,000,000 or any integral multiple of $1,000,000 in excess thereof (or, if less, the remaining outstanding principal amount of such Borrower’s Floating Rate Advances), upon at least one (1) Business Day’s prior notice to the Agent. Each Borrower may from time to time pay, subject to the payment of any funding indemnification amounts required by Section 3.4 but without penalty or premium, all outstanding Eurodollar Advances of such Borrower, or any portion of such outstanding Eurodollar Advances, in a minimum aggregate amount of $1,000,000 or any integral multiple of $1,000,000 in excess thereof (or, if less, the remaining outstanding principal amount of such Borrower’s Eurodollar Advances), upon at least three (3) Business Days’ prior notice to the Agent; provided that no Competitive Loan may be prepaid without the consent of the applicable Lender. Any optional payment of Advances (other than Competitive Loans) under this Section shall, as provided in Section 2.23(a), be applied ratably to the Advances (other than Competitive Loans) of all the Lenders, whether such Advances shall have been made pursuant to Extended Commitments or Non-Extended Commitments.

2.11. Method of Selecting Types and Interest Periods for New Revolving Advances. The applicable Borrower shall select the Type of each Revolving Advance and, in the case of each Eurodollar Advance, the Interest Period applicable thereto; provided that there shall be no more than five (5) Interest Periods in effect with respect to all of the Revolving Loans of any single Borrower at any time, unless such limit has been waived by the Agent in its sole discretion. The applicable Borrower shall give the Agent irrevocable notice (a “Borrowing Notice”) not later than 11:00 a.m. (New York time) on the Borrowing Date of each Floating Rate Advance and three Business Days before the Borrowing Date for each Eurodollar Advance, specifying:

The Agent shall provide written notice of each request for borrowing under this Section 2.11 by 11:00 a.m. (New York time) (or, if later, within one hour after receipt of the applicable Borrowing Notice from such Borrower) on each Borrowing Date for each Floating Rate Advance or on the third Business Day prior to each Borrowing Date for each Eurodollar Advance, as applicable. Not later than 1:00 p.m. (New York time) on each Borrowing Date, each Lender shall make available its Revolving Loan or Revolving Loans in Federal or other funds immediately available in New York to the Agent at its address specified pursuant to Article XIII. The Agent will promptly make the funds so received from the Lenders available to such Borrower at the Agent’s aforesaid address.

2.12. Conversion and Continuation of Outstanding Revolving Advances; No Conversion or Continuation of Eurodollar Advances After Default. Floating Rate Advances shall continue as Floating Rate Advances unless and until such Floating Rate Advances are converted into Eurodollar Advances pursuant to this Section 2.12 or are repaid in accordance with Section 2.10. Each Eurodollar Advance shall continue as a Eurodollar Advance until the end of the then applicable Interest Period therefor, at which time such Eurodollar Advance shall be automatically converted into a Floating Rate Advance unless (x) such Eurodollar Advance is or was repaid in accordance with Section 2.10 or (y) the applicable Borrower shall have given the Agent a Conversion/Continuation Notice (as defined below) requesting that, at the end of such Interest Period, such Eurodollar Advance continue as a Eurodollar Advance for the same or another Interest Period. Subject to the terms of Section 2.9, a Borrower may elect from time to time to convert all or any part of an Advance of any Type into any other Type or Types of Advances; provided that any conversion of any Eurodollar Advance shall be made on, and only on, the last day of the Interest Period applicable thereto. Notwithstanding anything to the contrary contained in this Section 2.12, during the continuance of a Default or an Unmatured Default with respect to a Borrower, the Agent may (or shall at the direction of the Required Lenders), by notice to such Borrower, declare that no Advance of such Borrower may be made,

converted or continued as a Eurodollar Advance. The applicable Borrower shall give the Agent irrevocable notice (a “Conversion/Continuation Notice”) of each conversion of a Floating Rate Advance to a Eurodollar Advance or continuation of a Eurodollar Advance, not later than 11:00 a.m. (New York time) at least three (3) Business Days prior to the date of the requested conversion or continuation, specifying:

This Section shall not apply to Competitive Loans, which may not be converted or continued.

2.13. Interest Rates, etc. Each Floating Rate Advance shall bear interest on the outstanding principal amount thereof, for each day from and including the date such Advance is made or is automatically converted from a Eurodollar Advance into a Floating Rate Advance pursuant to Section 2.12, to but excluding the date it is paid or is converted into a Eurodollar Advance pursuant to Section 2.12, at a rate per annum equal to the Floating Rate applicable to such Borrower for such day. Changes in the rate of interest on that portion of any Advance maintained as a Floating Rate Advance will take effect simultaneously with each change in the Alternate Base Rate. Each Eurodollar Advance shall bear interest on the outstanding principal amount thereof from and including the first day of each Interest Period applicable thereto to (but not including) the earlier of the last day of such Interest Period or the date it is paid in accordance with Section 2.10 at the applicable Eurodollar Rate as determined by the Agent as applicable to such Borrower’s Eurodollar Advance based upon the applicable Borrower’s selections under Sections 2.11 and 2.12 and otherwise in accordance with the terms hereof. Each Fixed Rate Advance shall bear interest at the Fixed Rate applicable thereto.

2.14. Rates Applicable After Default. After the occurrence and during the continuance of a Default with respect to any Borrower, the Required Lenders may, at their option, by notice to such Borrower (which notice may be revoked at the option of the Required Lenders notwithstanding any provision of Section 8.2 requiring unanimous consent of the Lenders to changes in interest rates), declare that (i) each Eurodollar Advance shall bear interest for the remainder of the applicable Interest Period at the rate otherwise applicable during such Interest Period plus 2% per annum and (ii) each Floating Rate Advance shall bear interest at a rate per annum equal to the Floating Rate in effect from time to time plus 2% per annum, provided that, during the continuance of a Default with respect to any Borrower under Section 7.6 or 7.7, the interest rates set forth in clauses (i) and (ii) above shall be applicable to all Advances, fees and other Obligations of such Borrower hereunder without any election or action on the part of the Agent or any Lender.

2.15. Funding of Loans; Method of Payment. All payments of the Obligations hereunder shall be made, without setoff, deduction or counterclaim, in immediately available funds to the Agent at the Agent’s address specified pursuant to Article XIII, or at any other Lending Installation of the Agent specified in writing by the Agent, by 12:00 noon (New York time) on the date when due and shall be applied ratably by the Agent among the Lenders to which such Obligations are owing. Each payment delivered to the Agent for the account of any Lender shall be delivered promptly by the Agent to such Lender in the same type of funds that the Agent received at its address specified pursuant to Article XIII or at any Lending Installation specified in a notice received by the Agent from such Lender. The Agent is hereby authorized to charge the account of any Borrower maintained with JPMCB for each payment of principal, interest and fees owed by such Borrower as it becomes due hereunder.

2.16. Noteless Agreement; Evidence of Indebtedness. (i) Each Lender shall maintain in accordance with its usual practice an account or accounts evidencing the indebtedness of each Borrower to such Lender resulting from each Loan made by such Lender to such Borrower from time to time, including the amounts of principal and interest payable and paid to such Lender from time to time hereunder.

2.17. Telephonic Notices. Each Borrower hereby authorizes the Lenders and the Agent to extend, convert or continue Advances, effect selections of Types of Advances and to transfer funds based on telephonic notices made by any person or persons the Agent or any Lender in good faith believes to be acting on behalf of such Borrower, it being understood that the

foregoing authorization is specifically intended to allow Borrowing Notices and Conversion/Continuation Notices to be given telephonically. Each Borrower agrees to deliver promptly to the Agent a written confirmation, signed by an Authorized Officer, if such confirmation is requested by the Agent or any Lender, of each telephonic notice. If the written confirmation differs in any material respect from the action taken by the Agent and the Lenders, the records of the Agent and the Lenders shall govern absent manifest error.

2.18. Interest Payment Dates; Interest and Fee Basis. Interest accrued on each Floating Rate Advance shall be payable in arrears on each Payment Date, commencing with the first such date to occur after the Closing Date, on any date on which such Floating Rate Advance is prepaid, whether due to acceleration or otherwise, and at maturity. Interest accrued on that portion of the outstanding principal amount of any Floating Rate Advance converted into a Eurodollar Advance on a day other than a Payment Date shall be payable on the date of conversion. Interest accrued on each Eurodollar Advance shall be payable on the last day of each applicable Interest Period, on any date on which the Eurodollar Advance is prepaid, whether by acceleration or otherwise, and at maturity. Interest accrued on each Eurodollar Advance having an Interest Period longer than three months shall also be payable on the last day of each three-month interval during such Interest Period. Interest accrued on each Fixed Rate Loan shall be payable on the last day of the Interest Period applicable to the Advance of which such Loan is a part and, in the case of a Fixed Rate Advance with an Interest Period of more than 90 days’ duration (unless otherwise specified in the applicable Competitive Bid Request), each day prior to the last day of such Interest Period that occurs at intervals of 90 days’ duration after the first day of such Interest Period, and any other dates that are specified in the applicable Competitive Bid Request as dates for payment of interest with respect to such Advance. Interest accrued on any Advance that is not paid when due shall be payable on demand and on the date of payment in full. Interest on Eurodollar Advances, Fixed Rate Loans and fees hereunder shall be calculated for actual days elapsed on the basis of a 360-day year. Interest on Floating Rate Advances shall be calculated for actual days elapsed on the basis of a 365/366-day year. Interest shall be payable for the day an Advance is made but not for the day of any payment on the amount paid if payment is received prior to 12:00 noon (New York time) at the place of payment. If any payment of principal of or interest on an Advance, any fees or any other amounts payable to the Agent or any Lender hereunder shall become due on a day which is not a Business Day, such payment shall be made on the next succeeding Business Day and, in the case of principal payment, such extension of time shall be included in computing interest, fees and commissions in connection with such payment.

2.19. Notification of Advances, Interest Rates, Prepayments and Commitment Reductions; Availability of Loans. Promptly after receipt thereof, the Agent will notify each Lender in writing of the contents of each Aggregate Commitment or Borrower Sublimit reduction notice, Borrowing Notice, Conversion/Continuation Notice, and repayment notice received by it hereunder. The Agent will notify the applicable Borrower and each Lender of the interest rate applicable to each Eurodollar Advance promptly upon determination of such interest rate and will give each Borrower and each Lender prompt notice of each change in the Alternate Base Rate.

2.20. Lending Installations. Each Lender may book its Loans at any Lending Installation selected by such Lender and may change its Lending Installation from time to time. All terms of this Agreement shall apply to any such Lending Installation and the Loans and any Notes issued hereunder shall be deemed held by each Lender for the benefit of any such Lending Installation. Each Lender may, by written notice to the Agent and the Borrowers in accordance with Article XIII, designate replacement or additional Lending Installations through which Loans will be made by it and for whose account Loan payments are to be made.

2.21. Non-Receipt of Funds by the Agent. Unless the applicable Borrower or a Lender, as the case may be, notifies the Agent prior to the date (or, in the case of a Lender with respect to a Floating Rate Advance under Section 2.11, prior to the time) on which it is scheduled to make payment to the Agent of (i) in the case of a Lender, the proceeds of a Loan or any payment under Section 2.6(e) or (ii) in the case of a Borrower, a payment of principal, interest or fees to the Agent for the account of the Lenders, that it does not intend to make such payment, the Agent may assume that such payment has been made. The Agent may, but shall not be obligated to, make the amount of such payment available to the intended recipient in reliance upon such assumption. If such Lender or such Borrower, as the case may be, has not in fact made such payment to the Agent, the recipient of such payment shall, on demand by the Agent, repay to the Agent the amount so made available together with interest thereon in respect of each day during the period commencing on the date such amount was so made available by the Agent until the date the Agent recovers such amount at a rate per annum equal to (x) in the case of payment by a Lender, the Federal Funds Effective Rate for such day for the first three days and, thereafter, the interest rate applicable to the relevant Loan or (y) in the case of payment by a Borrower, the interest rate applicable to the relevant Loan.

2.22. Replacement of Lender. If (x) any Borrower is required pursuant to Section 3.1, 3.2 or 3.5 to make any additional payment to any Lender, (y) any Lender’s obligation to make or continue, or to convert Floating Rate Advances into, Eurodollar Advances shall be suspended pursuant to Section 3.3, or (z) any Consenting Lender is a Defaulting Lender, the Borrowers may elect, if (in the case of clause (x) or (y) above) such amounts continue to be charged or such suspension is still effective, to terminate or replace the Commitment of such Affected Lender (as defined below), or if (I) any Lender invokes Section 9.2 or (II) any Lender has advised that it will not consent to any waiver or amendment of this Agreement that requires the approval of all the Lenders and upon the replacement of any such non-consenting Lender such approval shall be obtained (any Lender subject to any of the foregoing being an “Affected Lender”), the Borrowers may elect to replace the Commitment of such Affected Lender; provided in each of the foregoing cases that no Default or Unmatured Default shall have occurred and be continuing at the time of such termination or replacement, and provided further that, concurrently with such termination or replacement, (i) if the Affected Lender is being replaced, another bank or other entity which is reasonably satisfactory to the Borrowers and the Agent shall agree, as of such date, to purchase for cash at face amount the Outstanding Credit Exposure of the Affected Lender pursuant to an Assignment Agreement substantially in the form of Exhibit C and to become a Lender for all purposes under this Agreement and to assume all obligations of the Affected Lender to be terminated as of such date and to comply with the requirements of Section 12.3 applicable to assignments, and (ii) each Borrower shall pay to such Affected Lender in immediately available funds on the day of such replacement (A) all interest, fees and other amounts then accrued but unpaid to such Affected Lender by such Borrower hereunder to and including the date of termination, including without limitation payments due to such Affected Lender under Sections 3.1, 3.2 and 3.5, and (B) an amount, if any, equal to the payment which would have been due to

such Lender on the day of such replacement under Section 3.4 had the Loans of such Affected Lender been prepaid on such date rather than sold to the replacement Lender, in each case to the extent not paid by the purchasing lender and (iii) if the Affected Lender is being terminated, each Borrower shall pay to such Affected Lender all Obligations due from such Borrower to such Affected Lender (including the amounts described in the immediately preceding clauses (i) and (ii) plus the outstanding principal balance of such Affected Lender’s Advances and the amount of such Lender’s funded participations in unreimbursed LC Disbursements). Notwithstanding the foregoing, the Borrowers may not terminate the Commitment of an Affected Lender if, after giving effect to such termination, (x) the Aggregate Outstanding Credit Exposure would exceed the Aggregate Commitment, or (y) the Borrower Credit Exposure of any Borrower would exceed the Borrower Sublimit of such Borrower.

2.23. Extension of Commitment Termination Date and Borrowing Subsidiary Maturity Dates. (a) Extension of Commitment Termination Date. Effective as of the Amendment Effective Date, the Consenting Lenders have extended the final termination of their Commitments to the Extended Commitment Termination Date. Notwithstanding any other provision of this Agreement (but subject to Section 2.24), at all times prior to the Commitment Termination Date all borrowings of Revolving Loans, all payments of principal or interest in respect of Revolving Loans and participations in LC Disbursements, all payments of fees owed to the Lenders, will be made ratably from or to the Lenders, and all reductions of Commitments shall be allocated among the Lenders, on the basis of their Pro Rata Shares, without distinction as between the Consenting Lenders and the Declining Lenders. The Commitments held by the Declining Lenders shall terminate on the Commitment Termination Date. On the Commitment Termination Date, simultaneously with the termination of the Non-Extended Commitments, each Consenting Lender will automatically and without further act assume a portion of the participations in any outstanding Letters of Credit held by the Declining Lenders, such that after giving effect to such assumption, each Consenting Lender’s participation in each Letter of Credit will equal such Consenting Lender’s Pro Rata Share of the LC Exposure attributable thereto after giving effect to the termination of the Non-Extended Commitments on the Commitment Termination Date. The principal amount of any outstanding Loans made by Declining Lenders pursuant to Non-Extended Commitments, together with any accrued interest thereon and any accrued fees and other amounts payable to or for the account of such Declining Lenders hereunder in respect of Non-Extended Commitments, shall be due and payable on the Commitment Termination Date, and on the Commitment Termination Date, the Borrowers shall also make such other payments of their respective Loans pursuant to Section 2.10 as shall be required in order that, after giving effect to the termination of the Non-Extended Commitments of, and all payments to, Declining Lenders pursuant to this sentence and a reallocation of participations and outstanding Letters of Credit pursuant to the immediately preceding sentence, (i) the Aggregate Outstanding Credit Exposure will not exceed the Aggregate Commitment and (ii) the Revolving Credit Exposure of each Lender will not exceed its Commitment.

(b) Extension of Borrowing Subsidiary Maturity Dates. Any Borrowing Subsidiary may, by notice (a “Subsidiary Maturity Date Extension Request”) to the Agent (which shall promptly deliver a copy to each of the Lenders) given not less than 45 days and not more than 60 days prior to the then-current Maturity Date with respect to such Borrowing Subsidiary, request an extension of such Maturity Date with respect to such Borrowing Subsidiary to a date 364 days after such Maturity Date (the Maturity Date in effect prior to any such extension being

called the “Existing Maturity Date” with respect to such Borrowing Subsidiary) and on or prior to (but in no event after) the Extended Commitment Termination Date. Each Lender shall, by notice to such applicable Borrowing Subsidiary, the Company and the Agent given not later than the 20^th day after the date of the Agent’s receipt of such Borrowing Subsidiary’s Subsidiary Maturity Date Extension Request, advise such applicable Borrowing Subsidiary and the Company whether or not it agrees to the requested extension. Any Lender that has not so advised such applicable Borrowing Subsidiary, the Company and the Agent by such day shall be deemed to have declined to agree to such extension. If Lenders constituting the Required Lenders shall have agreed to a Subsidiary Maturity Date Extension Request, then the Maturity Date with respect to the applicable Borrowing Subsidiary shall, as to all the Lenders, be extended to the date 364 days after the Existing Maturity Date with respect to such Borrowing Subsidiary; provided, that the Maturity Date with respect to a Borrowing Subsidiary shall in no event be extended beyond the Extended Commitment Termination Date. Notwithstanding the foregoing, no extension of the Maturity Date with respect to any Borrowing Subsidiary pursuant to this paragraph shall become effective unless (i) the Agent shall have received documents consistent with those delivered with respect to such Borrowing Subsidiary under Sections 4.1.1 through 4.1.6, giving effect to such extension and (ii) on the Existing Maturity Date applicable to such Borrowing Subsidiary, the conditions set forth in Sections 4.2.1 and 4.2.2 shall be satisfied with respect to such Borrowing Subsidiary (with all references in Sections 5.5 and 5.7 to “the date of this Agreement” being deemed to be references to such Existing Maturity Date), and the Agent shall have received a certificate to that effect dated such date and executed by the chief financial officer, the controller or the treasurer of such Borrowing Subsidiary. The outstanding Subsidiary Maturity Date Extension Requests that have been approved by the Required Lenders for each of Union Electric and Genco shall be effective as of the Amendment Effective Date and the Maturity Date with respect to each of Union Electric and Genco shall be June 29, 2010.

(a) At any time prior to the Commitment Termination Date, notwithstanding Section 11.2 or any provision of this Agreement referring to Pro Rata Shares or ratable allocations or any other provision of this Agreement whatsoever to the contrary, if any Lender becomes a Defaulting Lender hereunder, then the following provisions shall apply for so long as such Defaulting Lender is a Defaulting Lender:

(b) In the event that each of the Agent, the Company and each Issuing Bank agrees that a Defaulting Lender has adequately remedied all matters that caused such Lender to be a Defaulting Lender, then any cash collateralization provided by any Borrower pursuant to subsection (a)(iii) immediately above shall be immediately returned to such Borrower.

(c) At any time after the Commitment Termination Date, notwithstanding Section 11.2 or any provision of this Agreement referring to Pro Rata Shares or ratable allocations or any other provision of this Agreement whatsoever to the contrary, if any Lender is or becomes a Defaulting Lender hereunder, then the following provisions shall apply for so long as such Defaulting Lender is a Defaulting Lender:

(d) At any time after the Commitment Termination Date, in the event that each of the Agent, the Company and each Issuing Bank agrees that a Defaulting Lender has adequately remedied all matters that caused such Lender to be a Defaulting Lender, then the LC Exposure of the Lenders shall be readjusted to reflect the inclusion of such Lender’s Commitment (or, if such Commitment has been terminated, as last in effect) and on such date such Lender shall purchase, at par, such of the Revolving Loans of the other Lenders as the Agent shall determine may be necessary in order for such Lender to hold such Revolving Loans in accordance with its Pro Rata Share and any cash collateralization provided by any Borrower pursuant to subsection (c)(v) immediately above shall be immediately returned to such Borrower.

2.25. Commitment Increases. (a) The Borrowers may from time to time (and more than one time), by written notice to the Agent (which shall promptly deliver a copy to each of the Lenders), executed by the Borrowers and one or more financial institutions (any such financial institution referred to in this Section being called an “Augmenting Lender”), which may include any Lender, cause new Commitments to be extended by the Augmenting Lenders or cause the existing Commitments of the Augmenting Lenders to be increased, as the case may be (the aggregate amount of such increase for all Augmenting Lenders on any single occasion being referred to as a “Commitment Increase”), in an amount for each Augmenting Lender set forth in such notice; provided that (i) the amount of each Commitment Increase shall be not less than $15,000,000, except to the extent necessary to utilize the remaining unused amount of increase permitted under this Section 2.25(a), (ii) the Aggregate Commitment together with the “Aggregate Commitment” under the Supplemental Credit Agreement shall not exceed $1,300,000,000 after giving effect to the effectiveness of each Commitment Increase and (iii) the Aggregate Commitment under this Agreement shall not exceed $1,150,000,000 at any time prior to the termination of the Non-Extended Commitments on the Commitment Termination Date. Each Augmenting Lender (if not then a Lender) shall be subject to the approval of the Agent and each Issuing Bank (which approval shall not be unreasonably withheld) and shall not be subject to the approval of any other Lenders, and the Company and each Augmenting Lender shall execute all such documentation as the Agent shall reasonably specify to evidence the Commitment of such Augmenting Lender and/or its status as a Consenting Lender hereunder (such documentation in respect of any Commitment Increase together with the notice of such Commitment Increase being referred to collectively as the “Commitment Increase Amendment” in respect of such Commitment Increase).

(b) Upon each Commitment Increase pursuant to this Section, (i) each Lender immediately prior to such increase will automatically and without further act be deemed to have assigned to each Augmenting Lender providing a portion of such Commitment Increase, and each such Augmenting Lender will automatically and without further act be deemed to have assumed, a portion of such Lender’s participations hereunder in outstanding Letters of Credit such that, after giving effect to such Commitment Increase and each such deemed assignment and assumption of participations, the percentage of the aggregate outstanding participations hereunder in Letters of Credit held by each Lender (including each such Augmenting Lender) will (subject to Section 2.24) equal such Lender’s Pro Rata Share, (ii) if, on the date of such Commitment Increase, there are any Revolving Loans outstanding, such Revolving Loans shall on or prior to the effectiveness of such Commitment Increase be prepaid from the proceeds of new Revolving Loans made hereunder (reflecting such Commitment Increase), which prepayment shall be accompanied by accrued interest on the Revolving Loans being prepaid and any costs incurred by any Lender in accordance with Section 3.4 and (iii) such Augmenting Lender will be deemed to be a Consenting Lender hereunder. The Agent and the Lenders hereby agree that the minimum borrowing, pro rata borrowing and pro rata payment requirements contained elsewhere in this Agreement shall not apply to the transactions effected pursuant to the immediately preceding sentence.

(c) Commitment Increases and new Commitments created pursuant to this Section 2.25 shall become effective on the date specified in the notice delivered by the Company pursuant to the first sentence of paragraph (a) above or on such other date as agreed upon by the Company, the Agent and the applicable Augmenting Lenders.

(d) Notwithstanding the foregoing, no increase in the Commitments (or in any Commitment of any Lender) or addition of an Augmenting Lender shall become effective under this Section unless on the date of such increase, the conditions set forth in Section 4.2 (it being understood that all references to “Credit Extension Date” therein shall be deemed to refer to the date of such Commitment Increase) shall be satisfied as of such date (as though the effectiveness of such increase were a Credit Extension) and the Agent shall have received a certificate to that effect dated such date and executed by an Authorized Officer of the Company.

3.1. Yield Protection. If, on or after the Closing Date, the adoption of any law or any governmental or quasi-governmental rule, regulation, policy, guideline or directive (whether or not having the force of law), or any change in any such law, rule, regulation, policy, guideline or directive or in the interpretation or administration thereof by any governmental or quasi-governmental authority, central bank or comparable agency charged with the interpretation or administration thereof, or compliance by any Lender or applicable Lending Installation with any request or directive (whether or not having the force of law) of any such authority, central bank or comparable agency:

3.1.1 subjects any Lender or any applicable Lending Installation to any Taxes, or changes the basis of taxation of payments (other than with respect to Excluded Taxes) to any Lender in respect of its Eurodollar Loans, or

3.1.2 imposes or increases or deems applicable any reserve, assessment, insurance charge, special deposit or similar requirement against assets of, deposits with or for the account of, or credit extended by, any Lender or any applicable Lending Installation (other than reserves and assessments taken into account in determining the interest rate applicable to Eurodollar Advances), or

3.1.3 imposes any other condition the result of which is to increase the cost to any Lender or any applicable Lending Installation of making, funding or maintaining its Commitment, Eurodollar Loans or Fixed Rate Loans or reduces any amount receivable by any Lender or any applicable Lending Installation in connection with its Commitment, Eurodollar Loans or Fixed Rate Loans, or requires any Lender or any applicable Lending Installation to make any payment calculated by reference to the amount of Commitment, Eurodollar Loans or Fixed Rate Loans held or interest received by it, by an amount deemed material by such Lender,

and the result of any of the foregoing is to increase the cost to such Lender or applicable Lending Installation of making or maintaining its Commitment, Eurodollar Loans or Fixed Rate Loans or to reduce the return received by such Lender or applicable Lending Installation in connection with such Commitment, Eurodollar Loans or Fixed Rate Loans, then, within 15 days of demand, accompanied by the written statement required by Section 3.6, by such Lender, the Borrowers shall pay such Lender such additional amount or amounts as will compensate such Lender for such increased cost or reduction in amount received.

3.2. Changes in Capital Adequacy Regulations. If a Lender determines the amount of capital required or expected to be maintained by such Lender, any Lending Installation of such Lender or any corporation controlling such Lender is increased as a result of a Change, then, within 15 days of demand, accompanied by the written statement required by Section 3.6, by such Lender, the Borrowers shall pay such Lender the amount necessary to compensate for any shortfall in the rate of return on the portion of such increased capital which such Lender determines is attributable to this Agreement, its Outstanding Credit Exposure or its Commitment hereunder (after taking into account such Lender’s policies as to capital adequacy). “Change” means (i) any change after the Closing Date in the Risk-Based Capital Guidelines or (ii) any adoption of, or change in, or change in the interpretation or administration of any other law, governmental or quasi-governmental rule, regulation, policy, guideline, interpretation, or directive (whether or not having the force of law) after the Closing Date which affects the amount of capital required or expected to be maintained by any Lender or any Lending Installation or any corporation controlling any Lender. “Risk-Based Capital Guidelines” means (i) the risk-based capital guidelines in effect in the United States on the Closing Date, including transition rules, and (ii) the corresponding capital regulations promulgated by regulatory authorities outside the United States implementing the July 1988 report of the Basle Committee on Banking Regulation and Supervisory Practices Entitled “International Convergence of Capital Measurements and Capital Standards,” including transition rules, and any amendments to such regulations adopted prior to the Closing Date.

3.3. Availability of Types of Advances. If (x) any Lender determines that maintenance of its Eurodollar Loans at a suitable Lending Installation would violate any applicable law, rule, regulation, or directive, whether or not having the force of law, or (y) the Required Lenders determine that (i) deposits of a type and maturity appropriate to match fund Eurodollar Advances are not available or (ii) the interest rate applicable to Eurodollar Advances does not accurately reflect the cost of making or maintaining Eurodollar Advances, or (iii) no reasonable basis exists for determining the Eurodollar Base Rate, then the Agent shall suspend the availability of Eurodollar Advances and require any affected Eurodollar Advances to be repaid or converted to Floating Rate Advances 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, subject to the payment of any funding indemnification amounts required by Section 3.4.

3.4. Funding Indemnification. If any payment of a Eurodollar Advance or a Fixed Rate Loan occurs on a date which is not the last day of the applicable Interest Period, whether because of acceleration, prepayment or otherwise, or a Eurodollar Advance is not made or continued, a Fixed Rate Loan is not made or a Floating Rate Advance is not converted into a Eurodollar Advance, on the date specified by the applicable Borrower for any reason other than default by the Lenders, or a Eurodollar Advance or Fixed Rate Loan is not prepaid on the date specified by such Borrower for any reason, such Borrower will indemnify each Lender for any loss or cost incurred by it resulting therefrom, including, without limitation, any loss or cost in liquidating or employing deposits acquired to fund or maintain such Eurodollar Advance or Fixed Rate Loan; provided that a Defaulting Lender required to assign its Loans under Section 2.22 shall not be entitled to compensation under this Section 3.4 in connection with such assignment. Such loss or cost shall be deemed to be an amount determined by such Lender (if and to the extent such Lender, in its sole discretion, elects to impose such a charge) to be the excess, if any, of (i) the amount of interest that would have accrued on the principal amount of such Advance had such event not occurred, at the Eurodollar Base Rate that would have been applicable to such Loan, for the period from the date of such event to the last day of the then current Interest Period therefor (or, in the case of a failure to borrow, convert or continue, for the period that would have been the Interest Period for such Advance), over (ii) the amount of interest that would accrue on such principal amount for such period at the interest rate which such Lender would bid if it were to bid, at the commencement of such period, for dollar deposits of a comparable amount and period from other banks in the London interbank market.

Each Lender shall deliver to each of the Borrowers and the Agent (x) renewals or additional copies of such form (or any successor form) on or before the date that such form expires or becomes obsolete, and (y) after the occurrence of any event requiring a change in the most recent forms so delivered by it, such additional forms or amendments thereto as may be reasonably requested by the Borrowers or the Agent. Notwithstanding the foregoing in this Section 3.5(iv), no Lender shall have any obligation under this Section 3.5(iv) if an event (including without limitation any change in treaty, law or regulation) has occurred prior to the date on which any such delivery would otherwise be required which renders all such forms inapplicable or which would prevent such Lender from duly completing and delivering any such form or amendment with respect to it and such Lender advises the Borrowers and the Agent that it is not capable of receiving payments without any deduction or withholding of U.S. federal income tax.

3.6. Lender Statements; Survival of Indemnity. Each Lender shall deliver a written statement of such Lender to the applicable Borrower (with a copy to the Agent and each applicable Borrower) as to the amount due, if any, under Section 3.1, 3.2, 3.4 or 3.5. Such written statement shall set forth in reasonable detail the calculations upon which such Lender determined such amount and shall be final, conclusive and binding on such Borrower in the absence of manifest error, and upon reasonable request of such Borrower, such Lender shall promptly provide supporting documentation describing and/or evidence of the applicable event giving rise to such amount to the extent not inconsistent with such Lender’s policies or applicable law. Determination of amounts payable under such Sections in connection with a Eurodollar Loan shall be calculated as though each Lender funded its Eurodollar Loan through the purchase of a deposit of the type, currency and maturity corresponding to the deposit used as a reference in determining the Eurodollar Rate applicable to such Loan, whether in fact that is the case or not. Unless otherwise provided herein, the amount specified in the written statement of any Lender shall be payable on demand after receipt by the applicable Borrower of such written statement. The obligations of each Borrower under Sections 3.1, 3.2, 3.4 and 3.5 shall survive payment of the Obligations and termination of this Agreement. Notwithstanding the foregoing, the Borrowers shall not be responsible for any reimbursement of any such amount under Section 3.1, 3.2, 3.4 or 3.5 which shall have accrued and of which the applicable Lender shall have become aware more than 180 days prior to its delivery to the Borrower of notice requesting reimbursement thereof.

3.7. Alternative Lending Installation. To the extent reasonably possible, each Lender shall designate an alternate Lending Installation with respect to its Eurodollar Loans to reduce any liability of the Borrowers to such Lender under Sections 3.1, 3.2 and 3.5 or to avoid the

unavailability of Eurodollar Advances under Section 3.3, so long as such designation is not, in the judgment of such Lender, disadvantageous to such Lender. A Lender’s designation of an alternative Lending Installation shall not affect the Borrowers’ rights under Section 2.22 to replace a Lender.

3.8. Allocation of Amounts Payable Among Borrowers. Each amount payable by “the Borrowers” under this Article shall be an obligation of, and shall be discharged (a) to the extent arising out of acts, events and circumstances related to a particular Borrower, by such Borrower and (b) otherwise, by all the Borrowers, with each Borrower being severally liable for such Borrower’s Contribution Percentage of such amount, provided that in consideration of the availability, on the terms set forth herein, of the entire amount of the Commitments in the form of borrowings by and Letters of Credit issued for the account of the Company, the Company agrees that, if one or more of the Borrowing Subsidiaries shall fail to pay any amount owed by it under clause (b) of this Section after a demand shall have been made by the Person to which such amount is owed, the Company shall promptly pay such amount (the Company hereby irrevocably waiving any defenses that might otherwise be available to it as a guarantor of the obligations of any Borrowing Subsidiary under this Section).

4.1. Amendment Effective Date. The amendment and restatement of the Original Credit Agreement in the form hereof pursuant to the Amendment Agreement shall become effective upon (i) the satisfaction of the requirements specified in Section 5 of the Amendment Agreement and (ii) the satisfaction of the following conditions precedent and the delivery by the Borrowers to the Agent of the items specified below:

4.1.1 Copies of the articles or certificate of incorporation of each Borrower, together with all amendments thereto, certified by the secretary or an assistant secretary of such Borrower, and a certificate of good standing with respect to each Borrower from the appropriate governmental officer in its jurisdiction of incorporation.

4.1.2 Copies, certified by the Secretary or Assistant Secretary of each Borrower, of its by-laws and of its Board of Directors’ resolutions and of resolutions or actions of any other body authorizing the execution of the Loan Documents to which such Borrower is a party.

4.1.3 An incumbency certificate, executed by the Secretary or Assistant Secretary of each Borrower, which shall identify by name and title and bear the signatures of the Authorized Officers and any other officers of such Borrower authorized to sign the Loan Documents to which such Borrower is a party, upon which certificate the Agent and the Lenders shall be entitled to rely until informed of any change in writing by such Borrower.

4.1.4 A certificate, signed by the Chairman, Chief Executive Officer, President, Executive Vice President, Chief Financial Officer, any Senior Vice President, any Vice President or the Treasurer of each Borrower, stating that on the Amendment Effective Date (a) no Default or Unmatured Default has occurred and is continuing, (b) all of the representations and warranties in Article V shall be true and correct in all material respects as of such date except to the extent any such representation or warranty is stated to relate solely to an earlier date, in which case such representation or warranty shall have been true and correct on and as of such earlier date and (c) the condition set forth in Section 4.1.9 below has been or is simultaneously being satisfied.

4.1.5 Written opinions of the Borrowers’ counsel, in form and substance satisfactory to the Agent and addressed to the Lenders, in substantially the forms of Exhibits A.1 and A.2.

4.1.6 Delivery of copies of the required regulatory authorizations identified on Schedule 4.

4.1.7 Any Notes requested by Lenders pursuant to Section 2.16 payable to the order of each such requesting Lender.

4.1.8 Written money transfer instructions, in substantially the form of Exhibit D, addressed to the Agent and signed by an Authorized Officer, together with such other related money transfer authorizations as the Agent may have reasonably requested.

4.1.9 Evidence satisfactory to the Agent that (i) each of the Existing Illinois Credit Agreements shall have been or shall simultaneously with the effectiveness of the amendment and restatement of this Agreement on the Amendment Effective Date be terminated (except for those provisions that expressly survive the termination thereof), and all loans and letters of credit outstanding, if any, and other amounts owed to the lenders or agents thereunder shall have been, or shall simultaneously with the effectiveness of this Agreement be, paid or terminated in full (or, in the case of letters of credit, other than those transferred to the New Illinois Agreement, cash collateralized in a manner satisfactory to the Agent and to the applicable issuing banks thereunder), (ii) the New Illinois Agreement shall be effective, and (iii) the aggregate amount of the Extended Commitments shall be not less than $750,000,000.

4.1.10 All documentation and other information that any Lender shall reasonably have requested in order to comply with its ongoing obligations under applicable “know your customer” and anti-money laundering rules and regulations, including the USA Patriot Act.

4.1.11 Such other documents as any Lender or its counsel may have reasonably requested.

4.2. Each Credit Extension. The Lenders and the Issuing Banks shall not be required to make any Credit Extension to a Borrower unless on the applicable Credit Extension Date (it being acknowledged and agreed that conversions and continuations of Advances that do not result in an increase in the aggregate outstanding amount thereof shall not be deemed to constitute Credit Extensions for purposes of this Section 4.2):

4.2.1 There exists no Default or Unmatured Default with respect to such Borrower and no Default or Unmatured Default with respect to such Borrower will result from such Credit Extension or from the use of the proceeds therefrom.

4.2.2 The representations and warranties of such Borrower contained in Article V are true and correct as of such Credit Extension Date except to the extent any such representation or warranty is stated to relate solely to an earlier date, in which case such representation or warranty shall have been true and correct on and as of such earlier date.

4.2.3 All legal matters incident to the making of such Credit Extension shall be satisfactory to the Lenders and their counsel.

4.2.4 All required regulatory authorizations of FERC and the Missouri Public Service Commission in respect of such Credit Extension to such Borrower shall have been obtained and shall be effective.

Each Borrowing Notice or request for the issuance of a Letter of Credit with respect to each such Credit Extension to a Borrower shall constitute a representation and warranty by the applicable Borrower that the conditions contained in Sections 4.2.1, 4.2.2 and 4.2.4 have been satisfied. Any Lender or Issuing Bank may require a duly completed compliance certificate in substantially the form of Exhibit B as a condition to making a Credit Extension.

Each Borrower hereby represents and warrants to each Lender, each Issuing Bank and the Agent, as to such Borrower and, as applicable, its Subsidiaries, as of each of (i) the Amendment Effective Date and (ii) each date as of which such Borrower is deemed to make the representations and warranties set forth in this Article under Section 4.2:

5.1. Existence and Standing. Such Borrower and each of its Subsidiaries (other than any Project Finance Subsidiary or Non-Material Subsidiary or an SPC) is a corporation, partnership (in the case of Subsidiaries only) or limited liability company duly and properly incorporated or organized, as the case may be, validly existing and (to the extent such concept applies to such entity) in good standing under the laws of its jurisdiction of incorporation or organization and has all requisite authority to conduct its business in each jurisdiction in which its business is conducted, other than the failure of any such Borrower to be qualified to transact business in any such jurisdiction to the extent such failure could not reasonably be expected to result in a Material Adverse Effect.

5.2. Authorization and Validity. Such Borrower has the power and authority and legal right to execute and deliver the Loan Documents and to perform its obligations thereunder. The execution and delivery by such Borrower of the Loan Documents and the performance of its obligations thereunder have been duly authorized by proper proceedings, and the Loan Documents to which such Borrower is a party constitute legal, valid and binding obligations of such Borrower enforceable against such Borrower in accordance with their terms, except as enforceability may be limited by (i) bankruptcy, insolvency, fraudulent conveyance, reorganization or similar laws relating to or affecting the enforcement of creditors’ rights generally; (ii) general equitable principles (whether considered in a proceeding in equity or at law) and (iii) requirements of reasonableness, good faith and fair dealing.

5.3. No Conflict; Government Consent. Neither the execution and delivery by such Borrower of the Loan Documents, nor the consummation of the transactions therein contemplated, nor compliance with the provisions thereof will violate (i) any law, rule, regulation, order, writ, judgment, injunction, decree or award binding on such Borrower or any of its Subsidiaries or (ii) such Borrower’s or any Subsidiary’s articles or certificate of incorporation, partnership agreement, certificate of partnership, articles or certificate of organization, by-laws, or operating agreement or other management agreement, as the case may be, or (iii) the provisions of the New Illinois Agreement or any indenture, any material instrument or any material agreement to which such Borrower or any of its Subsidiaries is a party or is subject, or by which it, or its Property, is bound, or conflict with, or constitute a default under, or result in, or require, the creation or imposition of any Lien in, of or on the Property of such Borrower or a Subsidiary pursuant to the terms of, the New Illinois Agreement or any such indenture, instrument or agreement. No order, consent, adjudication, approval, license, authorization, or validation of, or filing, recording or registration with, or exemption by, or other action in respect of any governmental or public body or authority, or any subdivision thereof, which has not been obtained by such Borrower or any of its Subsidiaries, is required to be obtained by such Borrower or any of its Subsidiaries in connection with the execution and delivery of the Loan Documents, the borrowings and issuances of Letters of Credit under this Agreement, the payment and performance by such Borrower of the Obligations or the legality, validity, binding effect or enforceability of any of the Loan Documents.

5.4. Financial Statements. The consolidated financial statements of such Borrower, audited by PricewaterhouseCoopers LLP, as of and for the fiscal year ended December 31, 2008, and the unaudited consolidated balance sheet of such Borrower as of March 31, 2009, and the related unaudited statement of income and statement of cash flows for the three-month period then ended, copies of which have been furnished to each Lender, fairly present in all material respects (subject in the case of such balance sheet and statement of income for the period ended March 31, 2009, to the absence of footnotes and subject to year-end adjustments) the consolidated financial condition of such Borrower at such dates and the consolidated results of the operations of such Borrower for the periods ended on such dates, were prepared, except in the case of such unaudited statements, in accordance with generally accepted accounting principles in effect on the dates such statements were prepared (except for the absence of footnotes and subject to year end audit adjustments) and fairly present the consolidated financial condition and operations of such Borrower at such dates and the consolidated results of their operations for the periods then ended. Except as disclosed in the financial statements referred to above or in the notes thereto or on Schedule 5 hereto, neither such Borrower nor any of its Subsidiaries has as of the Amendment Effective Date any material contingent liabilities.

5.5. Material Adverse Change. As of the Amendment Effective Date, since December 31, 2008, there has been no change in the business, Property, condition (financial or otherwise) or results of operations of such Borrower and its Subsidiaries (other than any Project Finance Subsidiary) which could reasonably be expected to have a Material Adverse Effect with respect to such Borrower, except for the Disclosed Matters.

5.6. Taxes. Such Borrower and its Subsidiaries have filed all U.S. federal tax returns and all other material tax returns which are required to be filed and have paid all taxes due pursuant to said returns or pursuant to any assessment received by such Borrower or any of its Subsidiaries, except in respect of such taxes, if any, as are being contested in good faith and as to which adequate reserves have been provided in accordance with Agreement Accounting Principles and as to which no Lien exists (except as permitted by Section 6.13.2). The IRS has closed audits of the U.S. federal income tax returns filed by each Borrower for all periods through the calendar taxable year ending December 31, 2004. The IRS has not closed audits of the U.S. federal income tax returns filed by any Borrower and its Subsidiaries for subsequent periods. No claims have been, or are being, asserted with respect to such taxes that could reasonably be expected to result in a Material Adverse Effect with respect to such Borrower and no Liens have been filed with respect to such taxes (other than as permitted pursuant to Section 6.13.2). The charges, accruals and reserves on the books of such Borrower and its Subsidiaries in respect of any taxes or other governmental charges are adequate.

5.7. Litigation and Contingent Obligations. As of the Amendment Effective Date, other than the Disclosed Matters, there is no litigation, arbitration, governmental investigation, proceeding or inquiry pending or, to the knowledge of any of its officers, threatened against or affecting such Borrower or any of its Subsidiaries which could reasonably be expected to have a Material Adverse Effect with respect to such Borrower or which seeks to prevent, enjoin or delay the making of any Loans to such Borrower.

5.8. Subsidiaries. Schedule 1 contains an accurate list of all Subsidiaries of such Borrower as of the Amendment Effective Date, setting forth their respective jurisdictions of organization and the percentage of their respective capital stock or other ownership interests owned by such Borrower or other Subsidiaries of such Borrower. As of the Amendment Effective Date, all the issued and outstanding shares of capital stock or other ownership interests of such Subsidiaries have been (to the extent such concepts are relevant with respect to such ownership interests) duly authorized and issued and are fully paid and non-assessable.

5.9. ERISA. No ERISA Event has occurred or is reasonably expected to occur that, when taken together with all other ERISA Events that have occurred or are reasonably expected to occur, could reasonably be expected to result in a Material Adverse Effect with respect to such Borrower.

5.10. Accuracy of Information. The information, exhibits or reports (other than budgets, forecasts, projections and forward looking statements (collectively, “Projections”)) with respect to such Borrower furnished to the Agent or to any Lender in connection with the

negotiation of, or compliance with, the Loan Documents as of the date furnished do not contain any material misstatement of fact or omit to state a material fact or any fact necessary to make the statements contained therein not misleading. The Projections with respect to such Borrower furnished to the Agent or to any Lender in connection with the negotiation of, or compliance with, the Loan Documents as of the date furnished shall have been prepared in good faith based upon assumptions believed by such Borrower to be reasonable at the time such Projections were prepared.

5.11. Regulation U. Neither such Borrower nor any of its Subsidiaries is engaged principally, or as one of its important activities, in the business of extending credit for the purpose, whether immediate, incidental or ultimate, of buying or carrying margin stock (as defined in Regulation U), and after applying the proceeds of each Advance, margin stock (as defined in Regulation U) will constitute less than 25% of the value of those assets of such Borrower and its Subsidiaries that are subject to any limitation on sale, pledge, or any other restriction hereunder.

5.12. Material Agreements. Neither such Borrower nor any of its Subsidiaries is a party to any agreement or instrument or subject to any charter or other corporate restriction which could reasonably be expected to have a Material Adverse Effect with respect to such Borrower as described in clauses (ii) and/or (iii) of the definition thereof. Neither such Borrower nor any of its Subsidiaries is in default in the performance, observance or fulfillment of any of the obligations, covenants or conditions contained in any agreement or instrument (other than any of the foregoing evidencing or governing Indebtedness) to which it is a party, which default could reasonably be expected to have a Material Adverse Effect with respect to such Borrower.

5.13. Compliance With Laws. Except for the Disclosed Matters, such Borrower and its Subsidiaries have complied with all applicable statutes, rules, regulations, orders and restrictions of any domestic or foreign government or any instrumentality or agency thereof having jurisdiction over the conduct of their respective businesses or the ownership of their respective Property, non-compliance with which could reasonably be expected to result in a Material Adverse Effect with respect to such Borrower.

5.14. Ownership of Properties. Such Borrower and its Subsidiaries have good title to or rights to use (except for minor defects in title that do not interfere with their ability to conduct their business as currently conducted or to utilize such properties for the intended purposes), free of all Liens other than those permitted by Section 6.13, all of the assets material to the business of such Borrower and its Subsidiaries, taken as a whole.

5.15. Plan Assets; Prohibited Transactions. Such Borrower is not an entity deemed to hold “plan assets” within the meaning of 29 C.F.R. § 2510.3-101 of an employee benefit plan (as defined in Section 3(3) of ERISA) which is subject to Title I of ERISA or any plan (within the meaning of Section 4975 of the Code), and assuming the accuracy of the representations and warranties made in Section 9.12 and in any assignment made pursuant to Section 12.3.3, neither the execution of this Agreement nor the making of Loans hereunder gives rise to a prohibited transaction within the meaning of Section 406 of ERISA or Section 4975 of the Code.

5.16. Environmental Matters. In the ordinary course of its business, the officers of such Borrower consider the effect of Environmental Laws on the business of such Borrower and its Subsidiaries, in the course of which they identify and evaluate potential risks and liabilities accruing to such Borrower due to Environmental Laws. On the basis of this consideration, such Borrower has concluded that, other than the Disclosed Matters, there exists no violation of, no actual or contingent liability under, and no requirement under any Environmental Laws that could reasonably be expected to have a Material Adverse Effect with respect to such Borrower. Except for the Disclosed Matters, and except with respect to any other matters that, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower, neither such Borrower nor any Subsidiary has received any notice to the effect that its operations are not in material compliance with any of the requirements of applicable Environmental Laws or are the subject of any federal or state investigation evaluating whether any remedial action is needed to respond to a release of any toxic or hazardous waste or substance into the environment.

5.17. Investment Company Act. Neither such Borrower nor any Subsidiary of such Borrower is an “investment company” or a company “controlled” by an “investment company”, within the meaning of the Investment Company Act of 1940, as amended.

5.18. Federal Energy Regulatory Commission. The Company is a “holding company” and each Borrowing Subsidiary is a “public utility”, as such terms are defined in the 2005 Act. The FERC, in accordance with the Federal Power Act, has issued an order authorizing the incurrence of short-term indebtedness by each of the Borrowing Subsidiaries in an aggregate principal amount outstanding not to exceed its FERC Limit, subject to, among other things, the condition that all such indebtedness be issued on or before March 31, 2010. Unless such authorization is no longer required by applicable laws and regulations (and the Agent shall have received confirmation thereof reasonably satisfactory to it), additional authorization from the FERC (or any governmental agency that succeeds to the authority of the FERC) will be necessary for each of the Borrowing Subsidiaries to obtain any Advances under this Agreement or to incur or issue short-term indebtedness, including without limitation Advances extended under this Agreement after March 31, 2010. Except for the aforesaid order of the FERC (as listed on Schedule 4 hereto), on the Amendment Effective Date no regulatory authorizations, approvals, consents, registrations, declarations or filings are required in connection with the borrowings by, and issuances of Letters of Credit for the account of, the Company or any Borrowing Subsidiary hereunder or the performance by each of Company and the Borrowing Subsidiaries of its Obligations hereunder and under the other Loan Documents, except where the failure to have obtained, made or maintained any such authorizations, approvals, consents, registrations, declarations or filings could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower. No regulatory authorizations, approvals, consents, registrations, declarations or filings are required in connection with the borrowings by, and issuances of Letters of Credit for the account of, any Borrower hereunder or the performance by any Borrower of its Obligations, except as set forth above or where the failure to have obtained, made or maintained any such authorizations, approvals, consents, registrations, declarations or filings could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower.

5.19. Insurance. Such Borrower maintains, and has caused each of its Subsidiaries to maintain, with financially sound and reputable insurance companies insurance on all its Property in such amounts, subject to such deductibles and self-insurance retentions and covering such properties and risks as are consistent with sound business practice.

5.20. No Default or Unmatured Default. No Default or Unmatured Default has occurred and is continuing with respect to such Borrower.

During the term of this Agreement, unless the Required Lenders shall otherwise consent in writing:

6.1. Financial Reporting. Each Borrower will maintain, for itself and each of its subsidiaries, a system of accounting established and administered in accordance with generally accepted accounting principles, and furnish to the Agent, and the Agent shall promptly deliver to each of the Lenders (it being agreed that the obligation of any Borrower to furnish the consolidated financial statements referred to in paragraphs 6.1.1 and 6.1.2 below may be satisfied by the delivery of annual and quarterly reports from such Borrower to the SEC on Forms 10-K and 10-Q containing such statements):

6.1.1 Within 75 days after the close of each fiscal year, such Borrower’s audited consolidated financial statements prepared in accordance with Agreement Accounting Principles on a consolidated basis, including balance sheets as of the end of such period, statements of income and statements of cash flows, accompanied by (a) an audit report, unqualified as to scope, of a nationally recognized firm of independent public accountants; (b) any management letter prepared by said accountants, and (c) a certificate of said accountants that, in the course of their audit of the foregoing, they have obtained no knowledge that such Borrower failed to comply with certain terms, covenants and provisions of this Agreement as they relate to accounting matters, or, if in the opinion of such accountants any such failure shall have occurred, stating the nature and status thereof. In addition, the Company shall deliver for each of CIPS, CILCO, CILCORP and IP the consolidated financial statements and any items referred to under clauses (a) and (b) that would have been required to be delivered by it under this Section 6.1.1 if it were a Borrower at such time.

6.1.2 Within 45 days after the close of the first three quarterly periods of each of its fiscal years, such Borrower’s consolidated unaudited balance sheets as at the close of each such period and consolidated statements of income and a statement of cash flows for the period from the beginning of such fiscal year to the end of such quarter, all certified as to fairness of presentation, compliance with Agreement Accounting Principles (except for the absence of footnotes and year-end adjustments) and consistency by its

chief financial officer, controller or treasurer. In addition, the Company shall deliver for each of CIPS, CILCO, CILCORP and IP the consolidated financial statements and the certification of the chief financial officer, controller or treasurer that would have been required to be delivered by it under this Section 6.1.2 if it were a Borrower at such time.

6.1.3 Together with the financial statements required under Sections 6.1.1 and 6.1.2, a compliance certificate in substantially the form of Exhibit B signed by such Borrower’s chief financial officer, controller or treasurer showing the calculations necessary to determine compliance with this Agreement and stating that no Default or Unmatured Default with respect to such Borrower exists, or if any such Default or Unmatured Default exists, stating the nature and status thereof.

6.1.4 As soon as possible and in any event within 10 days after such Borrower knows that any ERISA Event has occurred that, alone or together with any other ERISA Events that have occurred, could reasonably be expected to result in liability of such Borrower, its Subsidiaries or any Commonly Controlled Entity in an aggregate amount exceeding $25,000,000, a statement, signed by the chief financial officer, controller or treasurer of such Borrower, describing said ERISA Event and the action which such Borrower proposes to take with respect thereto.

6.1.5 As soon as possible and in any event within 10 days after receipt by such Borrower, a copy of (a) any notice or claim to the effect that such Borrower or any of its Subsidiaries is or may be liable to any Person as a result of the release by such Borrower, any of its Subsidiaries, or any other Person of any toxic or hazardous waste or substance into the environment, and (b) any notice alleging any violation of any federal, state or local environmental, health or safety law or regulation by such Borrower or any of its Subsidiaries, which, in either case, could reasonably be expected to have a Material Adverse Effect with respect to such Borrower.

6.1.6 Promptly upon becoming aware thereof, notice of any upgrading or downgrading of such Borrower’s S&P Rating or Moody’s Rating or the rating (if any) of such Borrower’s Obligations hereunder, senior unsecured debt, commercial paper or First Mortgage Bonds or of such Borrower’s corporate, issuer or issuer default rating by Moody’s, S&P or Fitch.

6.1.7 Such other information (including non-financial information) as the Agent or any Lender may from time to time reasonably request.

6.2. Use of Proceeds and Letters of Credit. Each Borrower will, and will cause each of its Subsidiaries to, use the proceeds of the Advances for general corporate purposes, including without limitation, for working capital, commercial paper liquidity support with respect to commercial paper issued by such Borrower or its Subsidiaries, and other funding needs, to fund loans under and pursuant to the Money Pool Agreements or other short-term intercompany loan

arrangements, and to pay fees and expenses incurred in connection with this Agreement. Each Borrower shall use the proceeds of Advances in compliance with all applicable contractual, legal and regulatory requirements and any such use shall not result in a violation of any such requirements, including, without limitation, Regulation U and Regulation X, the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, and the regulations promulgated thereunder. Each Borrower shall use the Letters of Credit for general corporate purposes.

6.3. Notice of Default. Within five (5) Business Days after an Authorized Officer of any Borrower becomes aware thereof, such Borrower will, and will cause each Subsidiary to, give notice in writing to the Agent of the occurrence of any Default or Unmatured Default and, unless otherwise reported to the SEC in such Borrower’s filings under the Securities Exchange Act of 1934, of any other development, financial or otherwise, which could reasonably be expected to have a Material Adverse Effect with respect to such Borrower.

6.4. Conduct of Business. Each Borrower will, and will cause each of its Subsidiaries to, do or cause to be done all things necessary to obtain, preserve, renew and keep in full force and effect its legal existence and, except where any of the following could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower, the rights, licenses, permits, privileges, franchises, patents, copyrights, trademarks and trade names material to the conduct of its business. Each Borrower will, and will cause each of its Subsidiaries to, carry on and conduct its business in substantially the same manner and in substantially the same fields of enterprise in which it is presently conducted or in a manner or fields of enterprise reasonably related thereto. Notwithstanding the foregoing, no Borrower shall be prohibited from (i) dissolving any Inactive Subsidiary, (ii) consummating any merger or consolidation permitted under Section 6.10 or (iii) the sale, transfer or other disposition of any Subsidiary or assets to the extent permitted pursuant to Section 6.11.

6.5. Taxes. Each Borrower will, and will cause each of its Subsidiaries to, timely file complete and correct U.S. federal and all other applicable material foreign, state and local tax returns required by law and pay when due all U.S. federal and all other applicable material foreign, state and local taxes, assessments and governmental charges and levies upon it or its income, profits or Property, except those which are being contested in good faith by appropriate proceedings and with respect to which adequate reserves have been recorded in accordance with Agreement Accounting Principles.

6.6. Insurance. Each Borrower will, and will cause each of its Subsidiaries to, maintain with financially sound and reputable insurance companies insurance on all its Property in such amounts, subject to such deductibles and self-insurance retentions, and covering such risks as is consistent with sound business practice, and such Borrower will furnish to any Lender upon request full information as to the insurance carried.

6.7. Compliance with Laws; Federal Energy Regulatory Commission Authorization. (a) Each Borrower will, and will cause each of its Subsidiaries to, comply with all laws, rules, regulations, orders, writs, judgments, injunctions, decrees or awards to which it may be subject including, without limitation, all Environmental Laws, except where the failure to do so, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower.

(b) Each Borrower further agrees not to request any Advance or permit any Loan to remain outstanding hereunder in violation of any applicable FERC authorization described in Section 5.18 or any conditions thereof, as in effect from time to time.

6.8. Maintenance of Properties. Subject to Section 6.11, each Borrower will, and will cause each of its Subsidiaries to, do all things necessary to maintain, preserve, protect and keep its Property material to the conduct of the business of such Borrower and its Subsidiaries, taken as a whole, in good repair, working order and condition (ordinary wear and tear excepted), and make all necessary and proper repairs, renewals and replacements so that its business carried on in connection therewith may be properly conducted at all times.

6.9. Inspection; Keeping of Books and Records. Each Borrower will, and will cause each of its Subsidiaries to, permit the Agent and the Lenders, by their respective representatives and agents, to inspect any of the Property, books and financial records of such Borrower and each of its Subsidiaries, to examine and make copies of the books of accounts and other financial records of such Borrower and each of its Subsidiaries, and to discuss the affairs, finances and accounts of such Borrower and each of its Subsidiaries with, and to be advised as to the same by, their respective officers at such reasonable times and intervals as the Agent or any Lender may designate. Each Borrower shall keep and maintain, and cause each of its Subsidiaries to keep and maintain, in all material respects, proper books of record and account in which entries in conformity with Agreement Accounting Principles shall be made of all dealings and transactions in relation to their respective businesses and activities. If a Default with respect to a Borrower has occurred and is continuing, such Borrower, upon the Agent’s request, shall turn over copies of any such records to the Agent or its representatives.

6.10. Merger. No Borrower will, or will permit any of its Subsidiaries to, merge or consolidate with or into any other Person, except (i) any Subsidiary other than a Borrowing Subsidiary may merge or consolidate with a Borrower if such Borrower is the corporation surviving such merger, (ii) any Borrowing Subsidiary may merge or consolidate with the Company if the Company is the corporation surviving such merger and succeeds to all the Obligations of such Borrower under documentation reasonably satisfactory to the Agent, (iii) any Subsidiary other than a Borrowing Subsidiary may merge or consolidate with any other Subsidiary, provided that, except as permitted pursuant to Section 6.11.15, each Borrower’s aggregate direct and indirect ownership interest in the survivor thereof shall not be less than such Borrower’s direct and indirect ownership interest in either of such Subsidiaries prior to such merger, (iv) a Permitted Illinois Utility Combination may be consummated and (v) any Borrower or any Subsidiary may merge or consolidate with any Person other than a Borrower or a Subsidiary if (a) such Person was organized under the laws of the United States of America or one of its States and (b) such Borrower or such Subsidiary is the corporation surviving such merger; provided that, in each case, after giving effect thereto, no Default or Unmatured Default with respect to such Borrower will be in existence.

6.11. Dispositions of Assets. No Borrower will, or will permit any of its Subsidiaries to, lease, sell or otherwise dispose of (collectively, for purposes of this definition, a “disposition”) its Property to any other Person, including any of its Subsidiaries, whether existing on the date hereof or hereafter created, except:

6.11.1 Sales of electricity, natural gas, emissions credits and other commodities in the ordinary course of business.

6.11.2 A disposition (including by way of an Investment) of assets by a Subsidiary of such Borrower (other than a Subsidiary of such Borrower that is itself a Borrowing Subsidiary) to such Borrower or another Subsidiary of such Borrower.

6.11.3 (a) A disposition by a Borrower, or any of its Subsidiaries, to another Subsidiary of the Company of Property received by such Borrower or such Subsidiary after the date hereof from the Company, directly or indirectly through another Subsidiary, specifically for transfer to the Subsidiary of such Borrower, or (b) a disposition by a Borrower, or any of its Subsidiaries, to any other Affiliate of assets, property or cash received from an Affiliate (other than from a Borrower or a Subsidiary of any Borrower) specifically for transfer to such Affiliate of the Company.

6.11.4 The payment of dividends in cash or common equity by the Company or any Subsidiary to holders of its equity interests.

6.11.5 Advances of cash in the ordinary course of business pursuant to the Money Pool Agreements or other intercompany borrowing arrangements with terms substantially similar to those of the Money Pool Agreements.

6.11.6 A disposition of obsolete property or property no longer used in the business of such Borrower or its Subsidiaries.

6.11.7 The transfer pursuant to a requirement of law or any regulatory authority having jurisdiction, of functional and/or operational control of (but not of title to) transmission facilities of such Borrower or its Subsidiaries to an Independent System Operator, Regional Transmission Organization or to some other entity which has responsibility for operating and planning a regional transmission system.

6.11.9 In the case of Genco, direct loans to its railroad subsidiary up to a maximum of $25,000,000 outstanding at any time.

6.11.10 Leases, sales or other dispositions by such Borrower or any of its Subsidiaries of its Property that, together with all other Property of such Borrower and its Subsidiaries previously leased, sold or disposed of (other than dispositions otherwise permitted by other provisions of this Section 6.11) since the Closing Date, do not constitute Property which represents more than fifteen percent (15%) of the Consolidated Tangible Assets of such Borrower

as would be shown in the consolidated financial statements of such Borrower and its Subsidiaries as at the end of the fiscal year ending immediately prior to the date of any such lease, sale or other disposition; provided that in the case of the Company, each reference in this Section 6.11.10 to a “Subsidiary” of the Company shall be deemed to be a reference to a “subsidiary” of the Company.

6.11.11 Contributions, directly or indirectly, of capital, in the form of either debt or equity, by the Company or any Subsidiary to any Subsidiary of the Company (and contributions by any such Subsidiary to one of its Subsidiaries of any such contribution received by such Subsidiary after the date hereof from the Company or a Subsidiary specifically for transfer to the Subsidiary of such Subsidiary).

6.11.12 Transactions under which the Borrower, or its Subsidiary, that disposes of its Property receives in return consideration (i) in a form other than equity, other ownership interests or indebtedness and (ii) of which at least 75% is cash and/or assumption of debt; provided that any such cash consideration so received, unless retained by such Borrower or its Subsidiary at all times prior to the repayment of all Obligations under this Agreement, shall be used (x) within twelve months of the receipt thereof for investment or reinvestment by such Borrower or its Subsidiary in its existing business or (y) within six months of the receipt thereof to reduce Indebtedness of such Borrower or its Subsidiary, and provided further that after taking into account the assets disposed of by such Borrower and its Subsidiaries in the aggregate and any investment or reinvestment of the proceeds thereof in the business of such Borrower and its Subsidiaries, no such transaction shall result in such Borrower and its Subsidiaries as a whole having disposed of all or substantially all of their assets.

6.11.13 Transfers of Receivables (and rights ancillary thereto) pursuant to, and in accordance with the terms of, a Permitted Securitization.

6.11.14 Disposition, directly or indirectly, by Ameren Illinois Transmission Company of electric transmission facilities, and any and all property, plant and equipment and property rights and interests related thereto, acquired after the Closing Date, in exchange for cash and/or assumption of debt; provided that any such cash consideration so received, unless retained by Ameren Illinois Transmission Company at all times prior to the repayment of all Obligations under this Agreement, shall be used within twelve months of the receipt thereof (x) for investment or reinvestment by Ameren Illinois Transmission Company in its existing business, (y) to reduce Indebtedness of Ameren Illinois Transmission Company or (z) to pay a dividend or return of capital to the Company.

6.11.15 Any transfer of equity interests in Resources as a result of which Resources ceases to be a subsidiary of CILCO (but would remain a subsidiary of the Company) or any other transfer of assets of Resources to a subsidiary of the Company, whether pursuant to a merger, sale, transfer, dividend, distribution or other corporate reorganization; provided that in any such case no Default or Unmatured Default shall have occurred and be continuing at the time of, or after giving effect to, the consummation of such transaction.

6.11.16 In the case of the Company, any disposition to or Investment in any subsidiary.

6.11.17 Disposition of assets deemed to have occurred by virtue of the consummation of a Permitted Illinois Utility Combination consummated in accordance with Section 6.10.

6.12. Indebtedness of Project Finance Subsidiaries, Investments in Project Finance Subsidiaries or Non Material Subsidiaries and Other Investments; Acquisitions.

6.12.1 Neither any Borrower nor any of its Subsidiaries shall be directly or indirectly, primarily or secondarily, liable for any Indebtedness or any other form of liability, whether direct, contingent or otherwise, of a Project Finance Subsidiary nor shall any Borrower or any of its Subsidiaries provide any guarantee of the Indebtedness, liabilities or other obligations of a Project Finance Subsidiary. No Borrower will, or will permit any of its Subsidiaries to, make or suffer to exist Investments in Project Finance Subsidiaries or Non-Material Subsidiaries in excess of $100,000,000 in the aggregate for all the Borrowers and Subsidiaries at any time outstanding (net of return of capital (but not return on capital) in respect of each such Investment and valued at the time of the making of such Investment), of which no more than $50,000,000 may at any time be represented by Contingent Obligations in respect of obligations of Non-Material Subsidiaries. No Borrower will, or will permit any of its Subsidiaries to, consummate any Acquisition other than an Acquisition (a) which is consummated on a non-hostile basis approved by a majority of the board of directors or other governing body of the Person being acquired and (b) which involves the purchase of a business line similar, related, complementary or incidental to that of such Borrower and its Subsidiaries as of the Closing Date unless the purchase price therefor is less than or equal to (i) $10,000,000 with respect thereto or (ii) $50,000,000 when taken together with all other Acquisitions consummated by all the Borrowers and Subsidiaries during the term of this Agreement which do not otherwise satisfy the conditions described above in this clause (b), and, as of the date of such Acquisition and after giving effect thereto, no Default or Unmatured Default shall exist with respect to such Borrower.

6.12.2 No Borrower will, or will permit any of its Subsidiaries to, make any Investment in, or lease, sell or otherwise dispose of any asset to, any Affiliate of the Company other than:

6.13. Liens. No Borrower will, or will permit any of its Subsidiaries (other than a Project Finance Subsidiary or Non-Material Subsidiary or an SPC) to, create, incur, or suffer to exist any Lien in, of or on the Property of such Borrower or any of its Subsidiaries, except:

6.13.2 Liens for taxes, assessments or governmental charges or levies on its Property if the same shall not at the time be delinquent or thereafter can be paid without penalty, or are being contested in good faith and by appropriate proceedings and for which adequate reserves in accordance with Agreement Accounting Principles shall have been set aside on its books.

6.13.3 Liens imposed by law, such as landlords’, wage earners’, carriers’, warehousemen’s and mechanics’ liens and other similar liens arising in the ordinary course of business which secure payment of obligations not more than 60 days past due or which are being contested in good faith by appropriate proceedings and for which adequate reserves in accordance with Agreement Accounting Principles shall have been set aside on its books.

6.13.4 Liens arising out of pledges or deposits under worker’s compensation laws, unemployment insurance, old age pensions, or other social security or retirement benefits, or similar legislation.

6.13.6 Deposits securing liability to insurance carriers under insurance or self-insurance arrangements.

6.13.7 Deposits or accounts to secure the performance of bids, trade contracts or obligations (other than for borrowed money), vendor and service provider arrangements, leases, statutory obligations, surety and appeal bonds, performance bonds and other obligations of a like nature incurred in the ordinary course of business.

6.13.8 Easements, reservations, rights-of-way, restrictions, survey exceptions and other similar encumbrances as to real property of such Borrower and its Subsidiaries which customarily exist on properties of corporations engaged in similar activities and similarly situated and which do not materially interfere with the conduct of the business of such Borrower or any such Subsidiary conducted at the property subject thereto.

6.13.9 Liens arising out of judgments or awards not exceeding (i) in the case of the Company, $50,000,000 in the aggregate for the Company and all its Subsidiaries with respect to which appeals are being diligently pursued, and, pending the determination of such appeals, such judgments or awards having been effectively stayed, or not more than 45 days has elapsed prior to the satisfaction or payment of such judgment or award giving rise to such Lien and (ii) in the case of each other Borrower, $25,000,000 in the aggregate for such Borrower and its Subsidiaries with respect to which appeals are being diligently pursued, and, pending the determination of such appeals, such judgments or awards having been effectively stayed or not more than 45 days has elapsed prior to the satisfaction or payment of such judgment or award giving rise to such Lien.

6.13.10 Liens, securing obligations constituting neither obligations nor Contingent Obligations of the Borrower or any Subsidiary nor on account of which the Borrower or any Subsidiary customarily pays interest, upon real estate upon which the Borrower or any Subsidiary has a right-of-way, easement, franchise or other servitude or of which the Borrower or any

Subsidiary is the lessee of the whole thereof or any interest therein, including, but not limited to, for the purpose of locating transmission and distribution lines and related support structures, pipe lines, substations, measuring stations, tanks, pumping or delivery equipment or similar equipment.

6.13.11 Liens arising by virtue of any statutory, contractual or common law provision relating to banker’s liens, rights of setoff or similar rights as to deposit accounts or other funds maintained with a depository institution.

6.13.12 Liens created pursuant to the Existing UE Indenture securing First Mortgage Bonds; provided that the Liens of such Existing UE Indenture shall extend only to the property of Union Electric (including, to the extent applicable, after acquired property) that is or would be covered by the Liens of the Existing UE Indenture as in effect on the date hereof.

6.13.14 Liens incurred in connection with the Peno Creek Project and the Audrain Project.

6.13.15 Liens existing on any capital assets of any Subsidiary of such Borrower at the time such Subsidiary becomes a Subsidiary and not created in contemplation of such event.

6.13.16 Liens on any capital assets securing Indebtedness incurred or assumed for the purpose of financing or refinancing all or any part of the cost of acquiring or constructing such asset; provided that such Lien attaches to such asset concurrently with or within eighteen (18) months after the acquisition or completion of construction thereof.

6.13.17 Liens existing on any capital assets of any Subsidiary of such Borrower at the time such Subsidiary is merged or consolidated with or into such Borrower or merged with or consolidated into any Subsidiary and not created in contemplation of such event.

6.13.18 Liens existing on any assets prior to the acquisition thereof by such Borrower or any of its Subsidiaries and not created in contemplation thereof; provided that such Liens do not encumber any other property or assets.

6.13.21 Liens on Property or assets of a Subsidiary in favor of such Borrower or a Subsidiary that is directly or indirectly wholly owned by such Borrower.

6.13.22 Liens representing the ownership interests or rights of a lessor in a Property leased by a Borrower or any of its Subsidiaries.

6.13.23 Liens arising in connection with sales or transfers of, or financings secured by, Receivables, including Liens granted by an SPC to secure Indebtedness arising under a Permitted Securitization.

6.13.24 Liens arising out of the refinancing, extension, renewal or refunding of any Indebtedness secured by any Lien permitted by any of Section 6.13.12 through 6.13.23; provided that (a) such Indebtedness is not secured by any additional assets, and (b) the amount of such Indebtedness secured by any such Lien is not increased.

6.13.25 Liens not described in Sections 6.13.1 through 6.13.24, inclusive, securing Indebtedness or other liabilities or obligations of a Borrower or its Subsidiaries in an aggregate principal amount outstanding for all such Liens not to exceed 10% of the Consolidated Tangible Assets of such Borrower at the time of the incurrence of any such Lien; provided that in the case of the Company, each reference in this Section 6.13.25 to a “Subsidiary” of the Company shall be deemed to be a reference to a “subsidiary” of the Company.

6.14. Affiliates. Each Borrower will not, and will not permit any of its Subsidiaries to, enter into any transaction (including without limitation, the purchase or sale of any Property or service) with, or make any payment or transfer to, any Affiliate (other than such Borrower and its Subsidiaries) except in the ordinary course of business and pursuant to the reasonable requirements of such Borrower’s or such Subsidiary’s business and, except to the extent that the terms and consideration of any such transaction are mandated, limited or otherwise subject to conditions imposed by any regulatory or government body, upon fair and reasonable terms no less favorable to such Borrower or such Subsidiary than such Borrower or such Subsidiary would obtain in a comparable arm’s-length transaction; provided, however, that this Section 6.14 shall not prohibit or restrict (i) transactions that provide for the purchase or sale of Property or services at cost that are entered into with any services company that is a Subsidiary of the Company, (ii) investments pursuant to cash management and money pool arrangements among the Company and its subsidiaries (consistent with past practices and subject to compliance with record-keeping arrangements sufficient to allow at any time the identification of cash to owners thereof at such time (it being understood that compliance with FERC or other applicable regulatory requirements to such effect shall be deemed sufficient)), (iii) customary sale and servicing transactions with an SPC pursuant to, and in accordance with the terms of, a Permitted Securitization, and (iv) the payment of dividends pursuant to Section 6.11.4 or 6.12.2(ix).

6.15. Financial Contracts. No Borrower will, or will permit any of its Subsidiaries, to, enter into or remain liable upon any Rate Management Transactions except for those entered into in the ordinary course of business for bona fide hedging purposes and not for speculative purposes.

6.16. Subsidiary Covenants. No Borrower will, or will permit any of its Subsidiaries other than a Project Finance Subsidiary, a Non-Material Subsidiary or an SPC to, create or otherwise cause to become effective any consensual encumbrance or restriction of any kind on the ability of any such Subsidiary other than a Project Finance Subsidiary or Non-Material Subsidiary or SPC (i) other than with respect to dividends payable by the Company to its shareholders, to pay dividends or make any other distribution on its common stock, (ii) to pay any Indebtedness or other obligation owed to such Borrower or any other Subsidiary of such Borrower, or (iii) to make loans or advances or other Investments in such Borrower or any other Subsidiary of such Borrower, in each case, other than (a) restrictions and conditions imposed by law or by this Agreement, the New Illinois Agreement or the Supplemental Credit Agreement (or restrictions and conditions imposed under refinancings or replacements of the New Illinois Agreement or the Supplemental Credit Agreement that are substantially the same as those imposed by the New Illinois Agreement or the Supplemental Credit Agreement) or the documents governing Resources Permitted Debt, (b) restrictions and conditions existing as of July 14, 2006 hereof, in each case as identified on Schedule 3 (without giving effect to any amendment or modification expanding the scope of any such restriction or condition), (c) restrictions on dividends on the capital stock of Union Electric entered into in connection with future issuances of subordinated capital income securities, to the extent the same are not more restrictive than those benefiting the holders of Union Electric’s existing 7.69% Subordinated Capital Income Securities, (d) restrictions and conditions in agreements or arrangements entered into by (1) Electric Energy, Inc. regarding the payment of dividends or the making of other distributions with respect to shares of its capital stock or (2) Gateway Energy WGK Project, L.L.C., in each case, without giving effect to any amendment or modification expanding the scope of any such restriction or condition, (e) customary restrictions and conditions relating to an SPC contained in agreements governing a Permitted Securitization, and (f) customary restrictions and conditions contained in agreements relating to the sale of a Subsidiary pending such sale, provided that such restrictions and conditions apply only to the Subsidiary that is to be sold and such sale is permitted hereunder.

6.17. Leverage Ratio. No Borrower will permit the ratio of (i) its Consolidated Indebtedness to (ii) its Consolidated Total Capitalization to be greater than 0.65 to 1.00 at any time for each Borrower; provided that Consolidated Indebtedness, solely as such term is used in, and solely for the purpose of, clause (i) of this Section 6.17, shall not include (A) with respect to Indebtedness of Genco, subordinated indebtedness under the Existing Intercompany Note, (B) subordinated indebtedness which, by it terms, is subordinated to the Obligations on terms not less favorable to the Lenders than those set forth in Exhibit G (it being understood that any such subordinated indebtedness under this clause (B) will be expressly subordinated to all Obligations, including Obligations in respect of Letters of Credit), (C) Permitted Securitizations or (D) Hybrid Securities.

The occurrence of any one or more of the following events in respect of any Borrower shall constitute a Default with respect to such Borrower:

7.1. Any representation or warranty made or deemed made by or on behalf of such Borrower (including any representation or warranty deemed made by such Borrower as to one of its Subsidiaries) to the Lenders, the Issuing Banks or the Agent under or in connection with this Agreement, any Credit Extension, or any certificate or information delivered in connection with this Agreement or any other Loan Document shall be false in any material respect on the date as of which made or deemed made.

7.2. Such Borrower or, in the case of the Company, the Company or any of its Subsidiaries, shall fail to pay in respect of any Obligation owing by it (i) principal of any Loan when due, or (ii) interest upon any Loan or any Facility Fee or other Obligation under any of the Loan Documents within five (5) Business Days after such interest, fee or other Obligation becomes due.

7.3. The breach by such Borrower of any of the terms or provisions of Section 6.2, 6.3, 6.9, 6.10, 6.11, 6.12, 6.13, 6.14, 6.15, 6.16 or 6.17.

7.4. The breach by such Borrower (other than a breach which constitutes a Default under another Section of this Article VII) of any of the terms or provisions of this Agreement which is not remedied within fifteen (15) days after the earlier to occur of (i) written notice from the Agent or any Lender to such Borrower or (ii) an Authorized Officer otherwise becoming aware of any such breach.

7.5. Failure of such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) to pay when due any Material Indebtedness; or the default by such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) in the performance (beyond the applicable grace period with respect thereto, if any) of any term, provision or condition contained in any Material Indebtedness Agreement or any other event shall occur or condition exist, the effect of which default, event or condition is to cause, or to permit the holder(s) of such Material Indebtedness or the lender(s) under any Material Indebtedness Agreement to cause, such Material Indebtedness to become due, or to be required to be prepaid or repurchased, (other than by a regularly scheduled payment or a mandatory prepayment of a corresponding receipt by such Borrower or such Subsidiary (such as from the proceeds of sale, transfer, loss or other disposition of property or the issuance of Indebtedness, equity or other securities)) prior to its stated maturity or any commitment to lend under any Material Indebtedness Agreement to be terminated prior to its stated expiration date; or any Material Indebtedness of such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) shall be declared to be due and payable or the remaining outstanding principal amount thereof to be required to be prepaid or repurchased (other than by a regularly scheduled payment or a mandatory prepayment of a corresponding receipt by such Borrower or such Subsidiary

(such as from the proceeds of sale, transfer, loss or other disposition of property or the issuance of Indebtedness, equity or other securities)) prior to the stated maturity thereof; or such Borrower or, in the case of the Company, any of its Subsidiaries (other than a Project Finance Subsidiary, a Non-Material Subsidiary or an SPC), shall not pay, or admit in writing its inability to pay, its debts generally as they become due; provided that no Default shall occur under this Section 7.5 as a result of (i) any notice of voluntary prepayment delivered by such Borrower or any Subsidiary with respect to any Indebtedness, or (ii) any voluntary sale of assets by such Borrower or any Subsidiary permitted hereunder as a result of which any Indebtedness secured by such assets is required to be prepaid; and provided further that any “Default” of the Company under the New Illinois Agreement that exists solely as a result of a default by a Illinois Utility shall not constitute a Default under this Section 7.5 while the Company is otherwise in compliance with all its obligations under the New Illinois Agreement.

7.6. Such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) shall (i) have an order for relief entered with respect to it under the Federal bankruptcy laws as now or hereafter in effect, (ii) make an assignment for the benefit of creditors, (iii) apply for, seek, consent to, or acquiesce in, the appointment of a receiver, custodian, trustee, examiner, liquidator or similar official for it or any Substantial Portion of its Property, (iv) institute any proceeding seeking an order for relief under the Federal bankruptcy laws as now or hereafter in effect or seeking to adjudicate it a bankrupt or insolvent, or seeking dissolution, winding up, liquidation, reorganization, arrangement, adjustment or composition of it or its debts under any law relating to bankruptcy, insolvency or reorganization or relief of debtors or fail to file an answer or other pleading denying the material allegations of any such proceeding filed against it, (v) take any corporate or partnership action to authorize or effect any of the foregoing actions set forth in this Section 7.6, (vi) fail to contest in good faith any appointment or proceeding described in Section 7.7, or (vii) become unable, admit in writing its inability or fail generally to pay its debts as they become due.

7.7. Without the application, approval or consent of such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC ), a receiver, trustee, examiner, liquidator or similar official shall be appointed for such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) or any Substantial Portion of its Property or the Property of any of its Subsidiaries (other than a Project Finance Subsidiary or a Non-Material Subsidiary or an SPC), or a proceeding seeking an order for relief under the Federal bankruptcy laws as now or hereafter in effect or seeking to adjudicate it a bankrupt or insolvent, or seeking dissolution, winding up, liquidation, reorganization, arrangement, adjustment or composition of it or its debts under any law relating to bankruptcy, insolvency or reorganization or relief of debtors shall be instituted against such Borrower or any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) and such appointment shall continue undischarged or such proceeding continues undismissed or unstayed for a period of 60 consecutive days.

7.8. Any court, government or governmental agency shall condemn, seize or otherwise appropriate, or take custody or control of, all or any portion of the Property of such Borrower or, in the case of the Company, any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC), which, when taken together with all other Property of such Borrower and/or, in the case of the Company, any such Subsidiaries so condemned, seized,

appropriated, or taken custody or control of, during the twelve-month period ending with the month in which any such action occurs, constitutes a Substantial Portion of such Borrower’s or, in the case of the Company, the Company and its Subsidiaries’ Property, taken as a whole.

7.9. Such Borrower or, in the case of the Company, any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC), shall fail within 45 days to pay, bond or otherwise discharge one or more (i) judgments or orders for the payment of money in excess of $25,000,000 (or the equivalent thereof in currencies other than Dollars) in the aggregate (net of any amount covered by insurance), or (ii) nonmonetary judgments or orders which, individually or in the aggregate, could reasonably be expected to have a Material Adverse Effect, which judgment(s), in any such case, is/are not stayed on appeal or otherwise being appropriately contested in good faith.

7.10. An ERISA Event shall have occurred that, in the opinion of the Required Lenders, when taken together with all other ERISA Events that have occurred, could reasonably be expected to result in liability (other than any liability discharged prior to the Amendment Effective Date) of the Company, its Subsidiaries or any Commonly Controlled Entity in an aggregate amount exceeding $25,000,000.

7.11. Nonpayment when due (after giving effect to any applicable grace period) by such Borrower or, in the case of the Company, any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC), of obligations or settlement amounts under Rate Management Transactions in an aggregate amount of $10,000,000 or more (after giving effect to all netting arrangements and agreements), or the breach (beyond any grace period applicable thereto) by such Borrower or, in the case of the Company, any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC) of any term, provision or condition contained in any Rate Management Transaction the effect of which is to cause, or to permit the counterparty(ies) thereof to cause, the termination of such Rate Management Transaction resulting in liability of such Borrower or such Subsidiaries for obligations and/or settlement amounts under such Rate Management Transactions in an aggregate amount of $10,000,000 or more (after giving effect to all netting arrangements and agreements).

7.13. Such Borrower or, in the case of the Company, any of its Subsidiaries, shall (i) be the subject of any proceeding or investigation pertaining to the release by such Borrower (or, in the case of the Company, any of its Subsidiaries) or any other Person of any toxic or hazardous waste or substance into the environment, or (ii) violate any Environmental Law; which, in the case of an event described in clause (i) or clause (ii), has resulted in liability to such Borrower or, in the case of the Company, any of its Subsidiaries, in an aggregate amount equal to $50,000,000 or more (in the case of the Company, in the aggregate for the Company and all its Subsidiaries), which liability is not paid, bonded or otherwise discharged within 45 days or which is not stayed on appeal and being appropriately contested in good faith.

7.14. Any Loan Document shall fail to remain in full force or effect with respect to such Borrower or, in the case of the Company, any of its Subsidiaries or any action shall be taken to discontinue or to assert the invalidity or unenforceability of any Loan Document with respect to such Borrower or, in the case of the Company, any of its Subsidiaries.

8.1. Acceleration. If any Default described in Section 7.6 or 7.7 occurs with respect to a Borrower or, in the case of the Company, any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC), the obligations of the Lenders to make Loans and of the Issuing Banks to issue Letters of Credit hereunder to such Borrower (and, if such Borrower is a Borrowing Subsidiary, the Company) shall automatically terminate and the Obligations of such Borrower (and, if such Borrower is a Borrowing Subsidiary, the Company) shall immediately become due and payable without any election or action on the part of the Agent, any Issuing Bank or any Lender. If any other Default occurs with respect to a Borrower or, in the case of the Company, any of its Subsidiaries (other than Project Finance Subsidiaries or Non-Material Subsidiaries or an SPC to the extent excluded from such Default by the provisions of Article VII), the Required Lenders (or the Agent with the consent of the Required Lenders) may terminate or suspend the obligations of the Lenders to make Loans and of the Issuing Banks to issue Letters of Credit hereunder to such Borrower, or declare the Obligations to be due and payable, or both, whereupon the Obligations shall become immediately due and payable, without presentment, demand, protest or notice of any kind, all of which such Borrower hereby expressly waives.

If, after acceleration of the maturity of the Obligations or termination of the obligations of the Lenders to make Loans and of the Issuing Banks to issue Letters of Credit hereunder as a result of any Default (other than any Default as described in Section 7.6 or 7.7 with respect to such Borrower) and before any judgment or decree for the payment of the Obligations due shall have been obtained or entered, the Required Lenders (in their sole discretion) shall so direct, the Agent shall, by notice to such Borrower, rescind and annul such acceleration and/or termination.

8.2. Amendments. Subject to the provisions of this Section 8.2, the Required Lenders (or the Agent with the consent in writing of the Required Lenders) and the Borrowers may enter into agreements supplemental hereto for the purpose of adding or modifying any provisions to the Loan Documents or changing in any manner the rights of the Lenders or the Borrowers hereunder or thereunder or waiving any Default hereunder or thereunder; provided, however, that no such supplemental agreement shall, without the consent of all of the Lenders (or, in the case of Section 8.2.2, all affected Lenders):

8.2.1 Extend the final maturity of any Revolving Loan or LC Disbursement or postpone any payment of principal of any Revolving Loan or LC Disbursement or forgive all or any portion of the principal amount thereof, or reduce the rate or extend the time of payment of interest or fees thereon (other than a waiver of the application of the default rate of interest pursuant to Section 2.14 hereof).

8.2.2 Extend the final maturity of any Competitive Loan or postpone any regularly scheduled payment of principal of any Competitive Loan or forgive all or any portion of the principal amount thereof, or reduce the rate or extend the time of payment of interest or fees thereon (other than a waiver of the application of the default rate of interest pursuant to Section 2.14 hereof).

8.2.3 Waive any condition set forth in Section 4.2, reduce the percentage specified in the definition of Required Lenders or any other percentage of Lenders specified to be the Pro Rata Share in this Agreement to act on specified matters or amend the definition of “Pro Rata Share”.

8.2.4 Other than as expressly permitted by the terms of Section 2.23, extend the Commitment Termination Date, the Extended Commitment Termination Date or the Maturity Date applicable to any Borrower, or reduce the amount or extend the payment date for, the mandatory payments required under Section 2.2, or increase the amount of the Commitment of any Lender hereunder or change the definition of Subsidiary Sublimit hereunder, or permit any Borrower to assign its rights or obligations under this Agreement or change Section 2.15 or 2.8.3 in a manner that would alter the pro rata sharing of payments or the application of reductions of commitments on a ratable basis required thereby.

No amendment of any provision of this Agreement relating to the Agent or any Issuing Bank shall be effective without the written consent of the Agent or such Issuing Bank, as the case may be. The Agent may waive payment of the fee required under Section 12.3.3 without obtaining the consent of any other party to this Agreement. Notwithstanding the foregoing, any provision of this Agreement may be amended by an agreement in writing entered into by the applicable Borrower, the Required Lenders and the Agent if (i) by the terms of such agreement any remaining Commitment of each Lender not consenting to the amendment provided for therein shall terminate upon the effectiveness of such amendment and (ii) at the time such amendment becomes effective, each Lender not consenting thereto receives payment in full of the principal of and interest accrued on each Advance made by it and all other amounts owing to it or accrued for its account under this Agreement.

8.2A Amendments after the Commitment Termination Date. Notwithstanding any other provision of this Agreement, effective upon the termination of the Non-Extended Commitments on the Commitment Termination Date, Section 8.2 shall be replaced in its entirety with the provisions set forth on Schedule 6 hereto.

8.3. Preservation of Rights. No delay or omission of the Lenders, the Agent or the Issuing Banks to exercise any right under the Loan Documents shall impair such right or be construed to be a waiver of any Default or an acquiescence therein, and the making of a Credit Extension notwithstanding the existence of a Default or Unmatured Default or the inability of a Borrower to satisfy the conditions precedent to such Credit Extension shall not constitute any waiver or acquiescence. Any single or partial exercise of any such right shall not preclude other

or further exercise thereof or the exercise of any other right, and no waiver, amendment or other variation of the terms, conditions or provisions of the Loan Documents whatsoever shall be valid unless in writing signed by, or by the Agent with the consent of, the requisite number of Lenders required pursuant to Section 8.2, and then only to the extent in such writing specifically set forth. All remedies contained in the Loan Documents or by law afforded shall be cumulative and all shall be available to the Agent, the Issuing Banks and the Lenders until all of the Obligations have been paid in full.

9.1. Survival of Representations. All representations and warranties of the Borrowers contained in this Agreement shall survive the making of the Credit Extensions herein contemplated.

9.2. Governmental Regulation. Anything contained in this Agreement to the contrary notwithstanding, no Lender shall be obligated to extend credit to any Borrower in violation of any limitation or prohibition provided by any applicable statute or regulation.

9.3. Headings. Section headings in the Loan Documents are for convenience of reference only, and shall not govern the interpretation of any of the provisions of the Loan Documents.

9.4. Entire Agreement. The Loan Documents embody the entire agreement and understanding among the Agent and the Lenders, and between the Agent and the Lenders on one hand, and the Borrowers individually on the other hand, and supersede all prior agreements and understandings among and between such parties, as the case may be, relating to the subject matter thereof other than those contained in the fee letters described in Section 10.13 which shall survive and remain in full force and effect during the term of this Agreement.

9.5. Several Obligations; Benefits of this Agreement. The respective obligations of the Lenders and the Issuing Banks hereunder are several and not joint and no Lender or Issuing Bank shall be the partner or agent of any other (except to the extent to which the Agent is authorized to act as such). The failure of any Lender or any Issuing Bank to perform any of its obligations hereunder shall not relieve any other Lender or any Issuing Bank from any of its obligations hereunder. This Agreement shall not be construed so as to confer any right or benefit upon any Person other than the parties to this Agreement and their respective successors and assigns, provided, however, that the parties hereto expressly agree that the Arrangers shall enjoy the benefits of the provisions of Sections 9.6, 9.10 and 10.11 to the extent specifically set forth therein and shall have the right to enforce such provisions on their own behalf and in its own name to the same extent as if it were a party to this Agreement (it being acknowledged that Section 9.6 may be enforced against any Borrower only to the extent of the amounts for which such Borrower is liable under the terms of such Section).

9.7. Numbers of Documents. All statements, notices, closing documents, and requests hereunder shall be furnished to the Agent with sufficient counterparts so that the Agent may furnish one to each of the Lenders, to the extent that the Agent deems necessary.

9.8. Accounting. Except as provided to the contrary herein, all accounting terms used in the calculation of any financial covenant or test shall be interpreted and all accounting determinations hereunder in the calculation of any financial covenant or test shall be made in accordance with Agreement Accounting Principles. If any changes in generally accepted accounting principles are hereafter required or permitted and are adopted by any Borrower or any of its Subsidiaries with the agreement of its independent certified public accountants and such changes result in a change in the method of calculation of any of the financial covenants, tests, restrictions or standards herein or in the related definitions or terms used therein (“Accounting Changes”), the parties hereto agree, at such Borrower’s request, to enter into negotiations, in good faith, in order to amend such provisions in a credit neutral manner so as to reflect equitably such changes with the desired result that the criteria for evaluating such Borrower’s and its Subsidiaries’ financial condition shall be the same after such changes as if such changes had not been made; provided, however, until such provisions are amended in a manner reasonably satisfactory to the Agent and the Required Lenders, no Accounting Change shall be given effect in such calculations. In the event such amendment is entered into, all references in this Agreement to Agreement Accounting Principles shall mean generally accepted accounting principles as of the date of such amendment. Notwithstanding the foregoing, all financial statements to be delivered by such Borrower pursuant to Section 6.1 shall be prepared in accordance with generally accepted accounting principles in effect at such time (subject in the case of interim financial statements, to the absence of footnotes and year-end adjustments).

9.9. Severability of Provisions. Any provision in any Loan Document that is held to be inoperative, unenforceable or invalid in any jurisdiction shall, as to that jurisdiction, be inoperative, unenforceable or invalid without affecting the remaining provisions in that jurisdiction or the operation, enforceability or validity of that provision in any other jurisdiction, and to this end the provisions of all Loan Documents are declared to be severable.

9.10. Nonliability. The relationship between the Borrowers individually on the one hand and the Lenders and the Agent on the other hand shall be solely that of borrower and lender. None of the Agent, any Arranger, any Issuing Bank or any Lender shall have any fiduciary responsibilities to the Borrowers. None of the Agent, any Arranger, any Issuing Bank or any Lender undertakes any responsibility to the Borrowers to review or inform the Borrowers of any matter in connection with any phase of the Borrowers’ businesses or operations. The Borrowers agree that none of the Agent, any Arranger, any Issuing Bank or any Lender shall have liability to the Borrowers (whether sounding in tort, contract or otherwise) for losses suffered by the Borrowers in connection with, arising out of, or in any way related to, the transactions contemplated and the relationship established by the Loan Documents, or any act, omission or event occurring in connection therewith, unless it is determined in a final non-appealable judgment by a court of competent jurisdiction that such losses resulted from the gross negligence or willful misconduct of the party from which recovery is sought. None of the Borrowers, the Agent, any Arranger, any Issuing Bank or any Lender shall have any liability with respect to, and each of the Agent, each Arranger, each Issuing Bank, each Lender and each Borrower hereby waives, releases and agrees not to sue for, any special, indirect, consequential or punitive damages suffered by it in connection with, arising out of, or in any way related to the Loan Documents or the transactions contemplated thereby.

9.11. Confidentiality. Each Lender and each Issuing Bank agrees to hold any confidential information which it may receive from any Borrower pursuant to this Agreement in confidence, except for disclosure (i) to its Affiliates and to other Borrowers, Lenders or Issuing Banks and their respective Affiliates, for use solely in connection with the transactions contemplated hereby, (ii) to legal counsel, accountants, and other professional advisors to such Lender or Issuing Bank or to a Transferee, in each case which have been informed as to the confidential nature of such information, for use solely in connection with the transactions contemplated hereby, (iii) to regulatory officials having jurisdiction over it or its Affiliates, (iv) to any Person as required by law, regulation, or legal process, (v) to any Person in connection with any legal proceeding to which such Lender or Issuing Bank is a party, (vi) to such Lender’s or Issuing Bank’s direct or indirect contractual counterparties in swap agreements or to legal counsel, accountants and other professional advisors to such counterparties, in each case which have been informed as to the confidential nature of such information, (vii) as permitted by Section 12.4 and (viii) to rating agencies if requested or required by such agencies in connection with a rating relating to this Agreement or the Advances hereunder.

9.12. Lenders Not Utilizing Plan Assets. Each Lender and Designated Lender represents and warrants that none of the consideration used by such Lender or Designated Lender to make its Loans constitutes for any purpose of ERISA or Section 4975 of the Code assets of any “plan” as defined in Section 3(3) of ERISA or Section 4975 of the Code and the rights and interests of such Lender or Designated Lender in and under the Loan Documents shall not constitute such “plan assets” under ERISA.

9.13. Nonreliance. Each Lender hereby represents that it is not relying on or looking to any margin stock (as defined in Regulation U) as collateral in the extension or maintenance of the credit provided for herein.

9.14. Disclosure. The Borrowers and each Lender and each Issuing Bank hereby acknowledge and agree that each Lender, each Issuing Bank and their Affiliates from time to time may hold investments in, make other loans to or have other relationships with the Borrowers and their Affiliates.

9.15. USA Patriot Act. Each Lender and each Issuing Bank hereby notifies the Borrowers that pursuant to the requirements of the USA Patriot Act, it is required to obtain, verify and record information that identifies the Borrowers, which information includes the names and addresses of the Borrowers and other information that will allow such Lender to identify the Borrowers in accordance with its requirements. The Borrowers shall promptly following a request by the Agent or any Lender, provide all documentation and other information that the Agent or such Lender reasonably requests in order to comply with its ongoing obligations under applicable “know your customer” and anti-money laundering rules and regulations including the USA Patriot Act.

10.1. Appointment; Nature of Relationship. JPMCB is hereby appointed by each of the Lenders and each of the Issuing Banks as its contractual representative (herein referred to as the “Agent”) hereunder and under each other Loan Document, and each of the Lenders and the each of the Issuing Banks irrevocably authorizes the Agent to act as the contractual representative of such Lender and such Issuing Bank with the rights and duties expressly set forth herein and in the other Loan Documents. The Agent agrees to act as such contractual representative upon the express conditions contained in this Article X. Notwithstanding the use of the defined term “Agent,” it is expressly understood and agreed that the Agent shall not have any fiduciary responsibilities to any Lender or any Issuing Bank by reason of this Agreement or any other Loan Document and that the Agent is merely acting as the contractual representative of the Lenders and the Issuing Banks with only those duties as are expressly set forth in this Agreement and the other Loan Documents. In its capacity as the Lenders’ and the Issuing Banks’ contractual representative, the Agent (i) does not hereby assume any fiduciary duties to any of the Lenders or the Issuing Banks, (ii) is a “representative” of the Lenders and the Issuing Banks within the meaning of the term “secured party” as defined in the New York Uniform Commercial Code and (iii) is acting as an independent contractor, the rights and duties of which are limited to those expressly set forth in this Agreement and the other Loan Documents. Each of the Lenders and the Issuing Banks hereby agrees to assert no claim against the Agent on any agency theory or any other theory of liability for breach of fiduciary duty, all of which claims each Lender hereby waives.

10.2. Powers. The Agent shall have and may exercise such powers under the Loan Documents as are specifically delegated to the Agent by the terms of each thereof, together with such powers as are reasonably incidental thereto. The Agent shall have no implied duties or fiduciary duties to the Lenders or the Issuing Banks, or any obligation to the Lenders or the Issuing Banks to take any action thereunder except any action specifically provided by the Loan Documents to be taken by the Agent. Without limiting any other power granted under any Loan Document, each Lender authorizes and directs the Agent to vote all the interests of the Lenders as a single bloc based upon the direction of the Required Lenders as contemplated by any Loan Document.

10.3. General Immunity. Neither the Agent nor any of its directors, officers, agents or employees shall be liable to the Borrowers, the Lenders or any Lender or any Issuing Bank for any action taken or omitted to be taken by it or them hereunder or under any other Loan Document or in connection herewith or therewith except to the extent such action or inaction is determined in a final, non-appealable judgment by a court of competent jurisdiction to have arisen from the gross negligence or willful misconduct of such Person.

10.4. No Responsibility for Loans, Recitals, etc. Neither the Agent nor any of its directors, officers, agents or employees shall be responsible for or have any duty to ascertain, inquire into, or verify (a) any statement, warranty or representation made in connection with any Loan Document or any borrowing hereunder; (b) the performance or observance of any of the covenants or agreements of any obligor under any Loan Document, including, without limitation, any agreement by an obligor to furnish information directly to each Lender and each Issuing Bank; (c) the satisfaction of any condition specified in Article IV, except receipt of items required to be delivered solely to the Agent; (d) the existence or possible existence of any Default or Unmatured Default; (e) the validity, enforceability, effectiveness, sufficiency or genuineness of any Loan Document or any other instrument or writing furnished in connection therewith; (f) the value, sufficiency, creation, perfection or priority of any Lien in any collateral security; or (g) the financial condition of the Borrowers or any guarantor of any of the Obligations or of any of the Borrowers’ or any such guarantor’s respective Subsidiaries. The Agent shall have no duty to disclose to the Lenders or the Issuing Banks information that is not required to be furnished by the Borrowers to the Agent at such time, but is voluntarily furnished by the Borrowers to the Agent (either in its capacity as Agent or in its individual capacity).

10.5. Action on Instructions of Lenders. The Agent shall in all cases be fully protected in acting, or in refraining from acting, hereunder and under any other Loan Document in accordance with written instructions signed by the Required Lenders (or all of the Lenders in the event that and to the extent that this Agreement expressly requires such), and such instructions and any action taken or failure to act pursuant thereto shall be binding on all of the Lenders. The Lenders hereby acknowledge that the Agent shall be under no duty to take any discretionary action permitted to be taken by it pursuant to the provisions of this Agreement or any other Loan Document unless it shall be requested in writing to do so by the Required Lenders (or all of the Lenders in the event that and to the extent that this Agreement expressly requires such). The Agent shall be fully justified in failing or refusing to take any action hereunder and under any other Loan Document unless it shall first be indemnified to its satisfaction in writing by the Lenders pro rata against any and all liability, cost and expense that it may incur by reason of taking or continuing to take any such action.

10.6. Employment of Agents and Counsel. The Agent may execute any of its duties as Agent hereunder and under any other Loan Document by or through employees, agents, and attorneys-in-fact and shall not be answerable to the Lenders or the Issuing Banks, except as to money or securities received by it or its authorized agents, for the default or misconduct of any such agents or attorneys-in-fact selected by it with reasonable care. The Agent shall be entitled to advice of counsel concerning the contractual arrangement between the Agent and the Lenders and the Issuing Banks and all matters pertaining to the Agent’s duties hereunder and under any other Loan Document.

10.7. Reliance on Documents; Counsel. The Agent shall be entitled to rely upon any Note, notice, consent, certificate, affidavit, letter, telegram, statement, paper or document believed by it to be genuine and correct and to have been signed or sent by the proper person or persons, and, in respect to legal matters, upon the opinion of counsel selected by the Agent, which counsel may be employees of the Agent.

10.8. Agent’s Reimbursement and Indemnification. The Lenders agree to reimburse and indemnify the Agent ratably in proportion to the their Pro Rata Shares of the Aggregate Commitment (or, if the Aggregate Commitment has been terminated, of the Aggregate Outstanding Credit Exposure) (determined as of the date of any such request by the Agent) (i) for any amounts not reimbursed by the Borrowers for which the Agent is entitled to reimbursement by the Borrowers under the Loan Documents in its capacity as Agent, (ii) to the extent not paid by the Borrowers, for any other expenses incurred by the Agent on behalf of the Lenders or the Issuing Banks, in connection with the preparation, execution, delivery, administration and enforcement of the Loan Documents (including, without limitation, for any expenses incurred by the Agent in connection with any dispute between the Agent and any Lender or between two or more of the Lenders or Issuing Banks) and (iii) to the extent not paid by the Borrowers, for any liabilities, obligations, losses, damages, penalties, actions, judgments, suits, costs, expenses or disbursements of any kind and nature whatsoever which may be imposed on, incurred by or asserted against the Agent in any way relating to or arising out of the Loan Documents or any other document delivered in connection therewith or the transactions contemplated thereby (including, without limitation, for any such amounts incurred by or asserted against the Agent in connection with any dispute between the Agent and any Lender or between two or more of the Lenders or Issuing Banks), or the enforcement of any of the terms of the Loan Documents or of any such other documents, provided that (i) no Lender shall be liable for any of the foregoing to the extent any of the foregoing is found in a final, non-appealable judgment by a court of competent jurisdiction to have resulted from the gross negligence or willful misconduct of the Agent, (ii) any indemnification required pursuant to Section 3.5(vi) shall, notwithstanding the provisions of this Section 10.8, be paid by the relevant Lender in accordance with the provisions thereof and (iii) the Agent shall reimburse the Lenders for any amounts the Lenders have paid to the extent such amounts are subsequently recovered from the Borrowers. The obligations of the Lenders under this Section 10.8 shall survive payment of the Obligations, termination and expiration of the Letters of Credit and termination of this Agreement.

10.9. Notice of Default. The Agent shall not be deemed to have knowledge or notice of the occurrence of any Default or Unmatured Default hereunder unless the Agent has received written notice from a Lender or a Borrower referring to this Agreement describing such Default or Unmatured Default and stating that such notice is a “notice of default”. In the event that the Agent receives such a notice, the Agent shall give prompt notice thereof to the Borrowers, the Lenders and the Issuing Banks.

10.10. Rights as a Lender. In the event the Agent is a Lender or an Issuing Bank, the Agent shall have the same rights and powers hereunder and under any other Loan Document with respect to its Commitment and its Credit Extensions as any Lender or any Issuing Bank and

may exercise the same as though it were not the Agent, and the term “Lender” or “Lenders” or “Issuing Bank” shall, at any time when the Agent is a Lender or an Issuing Bank, unless the context otherwise indicates, include the Agent in its individual capacity. The Agent and its Affiliates may accept deposits from, lend money to, and generally engage in any kind of trust, debt, equity or other transaction, in addition to those contemplated by this Agreement or any other Loan Document, with each Borrower or any of its Subsidiaries in which such Borrower or such Subsidiary is not restricted hereby from engaging with any other Person. The Agent, in its individual capacity, is not obligated to remain a Lender.

10.11. Independent Credit Decision. Each Lender and each Issuing Bank acknowledges that it has, independently and without reliance upon the Agent, any Arranger or any other Lender or any other Issuing Bank and based on the financial statements prepared by the Borrowers and such other documents and information as it has deemed appropriate, made its own credit analysis and decision to enter into this Agreement and the other Loan Documents. Each Lender and each Issuing Bank also acknowledges that it will, independently and without reliance upon the Agent, any Arranger 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 decisions in taking or not taking action under this Agreement and the other Loan Documents.

10.12. Successor Agent. The Agent may resign at any time by giving written notice thereof to the Lenders, the Issuing Banks and the Borrowers, such resignation to be effective upon the appointment of a successor Agent; provided that such successor Agent is a Lender or an Affiliate of a Lender, or, if no successor Agent has been appointed, forty-five days after the retiring Agent gives notice of its intention to resign. The Agent may be removed at any time with or without cause by written notice received by the Agent from the Required Lenders, such removal to be effective on the date specified by the Required Lenders. Upon any such resignation or removal, the Required Lenders, with the consent of the Borrowers (which consent shall not be unreasonably withheld or delayed; provided that such consent shall not be required in the event and continuation of a Default), shall have the right to appoint, on behalf of the Borrowers and the Lenders, a successor Agent. If no successor Agent shall have been so appointed by the Required Lenders or consented to by the Borrowers within thirty days after the resigning Agent’s giving notice of its intention to resign, then the resigning Agent may appoint, on behalf of the Borrowers and the Lenders, a successor Agent. Notwithstanding the previous sentence, the Agent may at any time without the consent of the Borrowers or any Lender or any Issuing Bank, appoint any of its Affiliates which is a commercial bank as a successor Agent hereunder. If the Agent has resigned or been removed and no successor Agent has been appointed, the Lenders may perform all the duties of the Agent hereunder and the Borrowers shall make all payments in respect of the Obligations to the applicable Lenders and for all other purposes shall deal directly with the Lenders. No successor Agent shall be deemed to be appointed hereunder until such successor Agent has accepted the appointment. Any such successor Agent shall be a commercial bank having capital and retained earnings of at least $1,000,000,000 (or such lower amount as shall be acceptable to the Company). Upon the acceptance of any appointment as Agent hereunder by a successor Agent, such successor Agent shall thereupon succeed to and become vested with all the rights, powers, privileges and duties of the resigning or removed Agent. Upon the effectiveness of the resignation or removal of the Agent, the resigning or removed Agent shall be discharged from its duties and obligations hereunder and under the Loan Documents. After the effectiveness of the resignation or removal

of an Agent, the provisions of this Article X shall continue in effect for the benefit of such Agent in respect of any actions taken or omitted to be taken by it while it was acting as the Agent hereunder and under the other Loan Documents. In the event that there is a successor to the Agent by merger, or the Agent assigns its duties and obligations to an Affiliate pursuant to this Section 10.12, then the term “Prime Rate” as used in this Agreement shall mean the prime rate, base rate or other analogous rate of the new Agent.

10.13. Agent and Arrangers Fees. Each Borrower agrees to pay to the Agent and each Arranger, for their respective accounts, the agent and arrangers fees agreed to by such Borrowers, the Agent and such Arranger pursuant to the letter agreements dated June 3, 2009, or as otherwise agreed from time to time.

10.14. Delegation to Affiliates. The Borrowers, the Lenders and the Issuing Banks agree that the Agent may delegate any of its duties under this Agreement to any of its Affiliates. Any such Affiliate (and such Affiliate’s directors, officers, agents and employees) which performs duties in connection with this Agreement shall be entitled to the same benefits of the indemnification, waiver and other protective provisions to which the Agent is entitled under Articles IX and X.

10.15. Syndication Agent and Documentation Agents. The Lender identified in this Agreement as the “Syndication Agent” and the Lenders identified in this Agreement as the “Documentation Agents” shall have no right, power, obligation, liability, responsibility or duty under this Agreement other than those applicable to all Lenders as such. Without limiting the foregoing, such Lenders shall not have or be deemed to have a fiduciary relationship with any other Lender. Each Lender hereby makes the same acknowledgements with respect to such Lenders as it makes with respect to the Agent in Section 10.11.

11.1. Setoff. In addition to, and without limitation of, any rights of the Lenders under applicable law, if a Borrower becomes insolvent, however evidenced, or any Default occurs with respect to a Borrower, any and all deposits (including all account balances, whether provisional or final and whether or not collected or available) and any other Indebtedness at any time held or owing by any Lender or any Affiliate of any Lender or any Issuing Bank to or for the credit or account of such Borrower may be offset and applied toward the payment of the Obligations owing by such Borrower to such Lender or such Issuing Bank, whether or not the Obligations, or any part thereof, shall then be due.

11.2. Ratable Payments. If any Lender, whether by setoff or otherwise, has payment made to it upon its Revolving Credit Exposure (other than payments received pursuant to Section 2.22, 2.23, 3.1, 3.2, 3.4 or 3.5) in a greater proportion than that received by any other Lender, such Lender agrees, promptly upon demand, to purchase a participation in the Aggregate Revolving Credit Exposure held by the other Lenders so that after such purchase each Lender will hold its Pro Rata Share of the Aggregate Revolving Credit Exposure. If any Lender, whether in connection with setoff or amounts which might be subject to setoff or otherwise,

receives collateral or other protection for its Obligations or such amounts which may be subject to setoff, such Lender agrees, promptly upon demand, to take such action necessary such that all Lenders share in the benefits of such collateral ratably in proportion to their respective Pro Rata Shares of the Aggregate Revolving Credit Exposure. In case any such payment is disturbed by legal process, or otherwise, appropriate further adjustments shall be made.

12.1.1 Successors and Assigns. The terms and provisions of the Loan Documents shall be binding upon and inure to the benefit of the Borrowers, the Agent, the Issuing Banks and the Lenders and their respective successors and assigns permitted hereby, except that (i) the Borrowers shall not have the right to assign their rights or obligations under the Loan Documents without the prior written consent of the Agent, each Lender and each Issuing Bank, (ii) any assignment by any Lender must be made in compliance with Section 12.3, and (iii) any transfer by Participants must be made in compliance with Section 12.2. Any attempted assignment or transfer by any party not made in compliance with this Section 12.1 shall be null and void, unless such attempted assignment or transfer is treated as a participation in accordance with Section 12.3.2. The parties to this Agreement acknowledge that clause (ii) of this Section 12.1 relates only to absolute assignments and this Section 12.1 does not prohibit assignments creating security interests, including, without limitation, (x) any pledge or assignment by any Lender of all or any portion of its rights under this Agreement and any Note to a Federal Reserve Bank, (y) in the case of a Lender which is a Fund, any pledge or assignment of all or any portion of its rights under this Agreement and any Note to its trustee in support of its obligations to its trustee or (z) any pledge or assignment by any Lender of all or any portion of its rights under this Agreement and any Note to direct or indirect contractual counterparties in swap agreements relating to the Loans; provided, however, that no such pledge or assignment creating a security interest shall release the transferor Lender from its obligations hereunder unless and until the parties thereto have complied with the provisions of Section 12.3. The Agent may treat the Person which made any Loan or which holds any Note as the owner thereof for all purposes hereof unless and until such Person complies with Section 12.3; provided, however, that the Agent may in its discretion (but shall not be required to) follow instructions from the Person which made any Loan or which holds any Note to direct payments relating to such Loan or Note to another Person. Any assignee of the rights to any Loan or any Note agrees by acceptance of such assignment to be bound by all the terms and provisions of the Loan Documents. Any request, authority or consent of any Person, who at the time of making such request or giving such authority or consent is the owner of the rights to any Loan (whether or not a Note has been issued in evidence thereof), shall be conclusive and binding on any subsequent holder or assignee of the rights to such Loan.

12.2.1 Permitted Participants; Effect. Any Lender may at any time sell to one or more banks or other entities (“Participants”) participating interests in any Outstanding Credit Exposure of such Lender, any Note held by such Lender, any Commitment of such Lender or any other interest of such Lender under the Loan Documents. In the event of any such sale by a Lender of participating interests to a Participant, such Lender’s obligations under the Loan Documents shall remain unchanged, such Lender shall remain solely responsible to the other parties hereto for the performance of such obligations, such Lender shall remain the owner of its Outstanding Credit Exposure and the holder of any Note issued to it in evidence thereof for all purposes under the Loan Documents, all amounts payable by the Borrowers under this Agreement shall be determined as if such Lender had not sold such participating interests, and the Borrowers and the Agent shall continue to deal solely and directly with such Lender in connection with such Lender’s rights and obligations under the Loan Documents.

12.2.2 Voting Rights. Each Lender shall retain the sole right to approve, without the consent of any Participant, any amendment, modification or waiver of any provision of the Loan Documents other than any amendment, modification or waiver with respect to any Credit Extension or Commitment in which such Participant has an interest which would require consent of all of the Lenders pursuant to the terms of Section 8.2.

12.2.3 Benefit of Certain Provisions. The Borrowers agree that each Participant shall be deemed to have the right of setoff provided in Section 11.1 in respect of its participating interest in amounts owing under the Loan Documents to the same extent as if the amount of its participating interest were owing directly to it as a Lender under the Loan Documents, provided that each Lender shall retain the right of setoff provided in Section 11.1 with respect to the amount of participating interests sold to each Participant. The

Lenders agree to share with each Participant, and each Participant, by exercising the right of setoff provided in Section 11.1, agrees to share with each Lender, any amount received pursuant to the exercise of its right of setoff, such amounts to be shared in accordance with Section 11.2 as if each Participant were a Lender. The Borrowers further agree that each Participant shall be entitled to the benefits of Sections 3.1, 3.2, 3.4 and 3.5 to the same extent as if it were a Lender and had acquired its interest by assignment pursuant to Section 12.3, provided that (i) a Participant shall not be entitled to receive any greater payment under Section 3.1, 3.2 or 3.5 than the Lender who sold the participating interest to such Participant would have received had it retained such interest for its own account, unless the sale of such interest to such Participant is made with the prior written consent of the Borrowers, and (ii) any Participant that is not a U.S. Person agrees to comply with the provisions of Section 3.5 to the same extent as if it were a Lender.

12.3.1 Permitted Assignments. Any Lender may at any time assign to one or more banks or other entities (other than to any Borrower or an Affiliate of a Borrower) (“Purchasers”) all or any part of its rights and obligations under the Loan Documents. Such assignment shall be evidenced by an agreement substantially in the form of Exhibit C or in such other form as may be agreed to by the parties thereto (each such agreement, an “Assignment Agreement”). Each Assignment Agreement shall in accordance with Section 12.6 identify each Commitment, Loan or other interest assigned to a Purchaser as an Extended Tranche Commitment, an Extended Tranche Loan and an Extended Tranche LC Exposure, as applicable, or as a Non-Extended Tranche Commitment, a Non-Extended Tranche Loan and a Non-Extended Tranche LC Exposure, as applicable. Each such assignment with respect to a Purchaser which is not a Lender or an Affiliate of a Lender or an Approved Fund shall either be in an amount equal to the entire applicable Commitment and Outstanding Credit Exposure of the assigning Lender or (unless each of the Borrowers and the Agent otherwise consents) be in an aggregate amount not less than $5,000,000. The amount of the assignment shall be based on the Commitment or, if the Commitments have been terminated, the Outstanding Credit Exposure subject to the assignment, determined as of the date of such assignment or as of the “Trade Date,” if the “Trade Date” is specified in the Assignment Agreement. Each partial assignment shall be made as an assignment of a proportionate part of all the assigning Lender’s rights and obligations under this Agreement, except that this sentence shall not apply to rights in respect of outstanding Competitive Loans.

12.3.2 Consents. The consent of the Borrowers shall be required prior to an assignment becoming effective unless the Purchaser is a Lender, an Affiliate of a Lender or an Approved Fund, provided that the consent of the Borrowers shall not be required if (i) a Default has occurred and is continuing or (ii) such assignment is in connection with the physical settlement of any

Lender’s obligations to direct or indirect contractual counterparties in swap agreements relating to the Loans; provided, that the assignment without the Borrowers’ consent pursuant to clause (ii) shall not increase the Borrowers’ liability under Section 3.5. The consent of the Agent and each Issuing Bank shall be required prior to an assignment becoming effective. Any consent required under this Section 12.3.2 shall not be unreasonably withheld or delayed.

12.3.3 Effect; Effective Date. Upon (i) delivery to the Agent of an Assignment Agreement, together with any consents required by Sections 12.3.1 and 12.3.2, and (ii) payment of a $3,500 fee to the Agent for processing such assignment (unless such fee is waived by the Agent); provided that no fee shall be required if a Purchaser is a Lender, an Affiliate of a Lender or an Approved Fund, such assignment shall become effective on the effective date specified in such assignment. The Assignment Agreement shall contain a representation and warranty by the Purchaser to the effect that none of the funds, money, assets or other consideration used to make the purchase and assumption of the Commitment and Outstanding Credit Exposure under the applicable Assignment Agreement constitutes “plan assets” as defined under ERISA and that the rights, benefits and interests of the Purchaser in and under the Loan Documents will not be “plan assets” under ERISA. On and after the effective date of such assignment, such Purchaser shall for all purposes be a Lender party to this Agreement and any other Loan Document executed by or on behalf of the Lenders and shall have all the rights, benefits and obligations of a Lender under the Loan Documents, to the same extent as if it were an original party thereto, and the transferor Lender shall be released with respect to the Commitment and Outstanding Credit Exposure, if any, assigned to such Purchaser without any further consent or action by the Borrowers, the Lenders or the Agent. In the case of an assignment covering all of the assigning Lender’s rights, benefits and obligations under this Agreement, such Lender shall cease to be a Lender hereunder but shall continue to be entitled to the benefits of, and subject to, those provisions of this Agreement and the other Loan Documents which survive payment of the Obligations and termination of the Loan Documents. Any assignment or transfer by a Lender of rights or obligations under this Agreement that does not comply with this Section 12.3 shall be treated for purposes of this Agreement as a sale by such Lender of a participation in such rights and obligations in accordance with Section 12.2. Upon the consummation of any assignment to a Purchaser pursuant to this Section 12.3.3, the transferor Lender, the Agent and the Borrowers shall, if the transferor Lender or the Purchaser desires that its Loans be evidenced by Notes, make appropriate arrangements so that, upon cancellation and surrender to the Borrowers of the Notes (if any) held by the transferor Lender, new Notes or, as appropriate, replacement Notes are issued to such transferor Lender, if applicable, and new Notes or, as appropriate, replacement Notes, are issued to such Purchaser, in each case in principal amounts reflecting their respective Commitments (or, if such Commitments have been terminated, their respective Outstanding Credit Exposure), as adjusted pursuant to such assignment.

12.3.4 Register. The Agent, acting solely for this purpose as an agent of the Borrowers (and the Borrowers hereby designate the Agent to act in such capacity), shall maintain at one of its offices in New York, New York a copy of each Assignment Agreement delivered to it and a register (the “Register”) for the recordation of the names and addresses of the Lenders, and the Commitments of, and principal amounts of and interest on the Loans owing to, each Lender pursuant to the terms hereof from time to time and whether such Lender is an original Lender or assignee of another Lender pursuant to an assignment under this Section 13.3. The entries in the Register shall be conclusive, absent manifest error and the Borrowers, the Agent and the Lenders may treat each Person whose name is recorded in the Register pursuant to the terms hereof as a Lender hereunder for all purposes of this Agreement, notwithstanding notice to the contrary. The Register shall be available for inspection by the Borrowers and any Lender, at any reasonable time and from time to time upon reasonable prior notice.

12.4. Dissemination of Information. The Borrowers authorize each Lender to disclose to any Participant or Purchaser or any other Person acquiring an interest in the Loan Documents by operation of law (each a “Transferee”) and any prospective Transferee any and all information in such Lender’s possession concerning the creditworthiness of the Borrowers and their Subsidiaries; provided that each Transferee and prospective Transferee agrees to be bound by Section 9.11 of this Agreement.

12.5. Tax Certifications. If any interest in any Loan Document is transferred to any Transferee which is not a U.S. Person, the transferor Lender shall cause such Transferee, concurrently with the effectiveness of such transfer, to comply with the provisions of Section 3.5(iv).

12.6. Tranches. For all purposes hereunder (i) Extended Commitments and the Loans and LC Exposure arising in respect thereof shall be deemed to comprise the “Extended Tranche” and shall be referred to in the records of the Agent and in each Designation Agreement and each Assignment Agreement as Extended Tranche Commitments, Extended Tranche Loans and Extended Tranche LC Exposure and (ii) Non-Extended Commitments and the Loans and LC Exposure arising in respect thereof shall be deemed to comprise the “Non-Extended Tranche” and shall be referred to in the records of the Agent and in each Designation Agreement and each Assignment Agreement as Non-Extended Tranche Commitments, Non-Extended Tranche Loans and Non-Extended Tranche LC Exposure.

(a) Except in the case of notices and other communications expressly permitted to be given by telephone (and subject to paragraph (b) below), all notices and other communications provided for herein shall be in writing and shall be delivered by hand or overnight courier service, mailed by certified or registered mail or sent by telecopy, as follows:

(b) Notices and other communications to the Lenders and the Issuing Banks hereunder may be delivered or furnished by electronic communications pursuant to procedures approved by the Agent; provided that the foregoing shall not apply to notices pursuant to Article II unless otherwise agreed by the Agent and the applicable Lender. The Agent or any Borrower may, in its discretion, agree to accept notices and other communications to it hereunder by electronic communications pursuant to procedures approved by it; provided that approval of such procedures may be limited to particular notices or communications.

(c) Any party hereto may change its address or telecopy number for notices and other communications hereunder by notice to the other parties hereto. All notices and other communications given to any party hereto in accordance with the provisions of this Agreement shall be deemed to have been given on the date of receipt.

13.2. Change of Address. Any Borrower, the Agent, any Issuing Bank and any Lender may each change the address for service of notice upon it by a notice in writing to the other parties hereto.

This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one agreement, and any of the parties hereto may execute this Agreement by signing any such counterpart. This Agreement shall be effective when it has been executed by the Borrowers, the Agent, the Issuing Banks and the Lenders and each party has notified the Agent by facsimile transmission or telephone that it has taken such action.

15.1. CHOICE OF LAW. THE LOAN DOCUMENTS (OTHER THAN THOSE CONTAINING A CONTRARY EXPRESS CHOICE OF LAW PROVISION) SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK.

15.2. CONSENT TO JURISDICTION. EACH BORROWER, EACH LENDER AND THE AGENT HEREBY IRREVOCABLY SUBMIT TO THE NON-EXCLUSIVE JURISDICTION OF ANY UNITED STATES FEDERAL OR NEW YORK STATE COURT SITTING IN NEW YORK, NEW YORK, IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO ANY LOAN DOCUMENTS AND EACH SUCH PERSON HEREBY IRREVOCABLY AGREES THAT ALL CLAIMS IN RESPECT OF SUCH ACTION OR PROCEEDING MAY BE HEARD AND DETERMINED IN ANY SUCH COURT AND IRREVOCABLY WAIVES ANY OBJECTION IT MAY NOW OR HEREAFTER HAVE AS TO THE VENUE OF ANY SUCH SUIT, ACTION OR PROCEEDING BROUGHT IN SUCH A COURT OR THAT SUCH COURT IS AN INCONVENIENT FORUM. NOTHING HEREIN SHALL LIMIT THE RIGHT OF THE AGENT OR ANY LENDER TO BRING PROCEEDINGS AGAINST ANY BORROWER IN THE COURTS OF ANY OTHER JURISDICTION. ANY JUDICIAL PROCEEDING BY ANY BORROWER AGAINST THE AGENT OR ANY LENDER OR ANY AFFILIATE OF THE AGENT OR ANY LENDER INVOLVING, DIRECTLY OR INDIRECTLY, ANY MATTER IN ANY WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH ANY LOAN DOCUMENT SHALL BE BROUGHT ONLY IN A COURT IN NEW YORK, NEW YORK.

15.3. WAIVER OF JURY TRIAL. EACH BORROWER, THE AGENT, EACH ISSUING BANK AND EACH LENDER HEREBY WAIVES TRIAL BY JURY IN ANY JUDICIAL PROCEEDING INVOLVING, DIRECTLY OR INDIRECTLY, ANY MATTER (WHETHER SOUNDING IN TORT, CONTRACT OR OTHERWISE) IN ANY WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH ANY LOAN DOCUMENT OR THE RELATIONSHIP ESTABLISHED THEREUNDER.

16.1. General. The following provisions shall apply at all times until the termination of the Non-Extended Commitments on the Commitment Termination Date:

(a) No Revolving Loan shall be made by a Lender pursuant to an Extended Commitment unless there shall simultaneously be made a “Revolving Loan” under and as defined in the Supplemental Credit Agreement (the “Corresponding Loan”) by the same Lender pursuant to its “Commitment” under the Supplemental Credit Agreement, which Corresponding Loan shall bear the same proportion to the “Commitment” of such Lender under the

Supplemental Credit Agreement as such Revolving Loan bears to such Lender’s Extended Commitment, and shall be of the same Type and, if applicable, for the same Interest Period, as such Revolving Loan. No conversion, continuation or prepayment of a Revolving Loan (or portion thereof) shall be made hereunder unless there shall be made simultaneously a conversion, continuation or prepayment of the Corresponding Loan (or a ratable portion thereof) under the Supplemental Credit Agreement.

(b) The maximum LC Exposure specified in Section 2.6(b) shall apply on a combined basis to the LC Exposures under and as defined in both Credit Agreements and (i) each Letter of Credit under and as defined in the Supplemental Credit Agreement will be deemed also to be issued under this Agreement (it being understood that the LC Exposure in respect of each such Letter of Credit for purposes of this Agreement shall exclude the participations of the “Lenders” under the Supplemental Credit Agreement in such Letter of Credit); (ii) each Lender under this Agreement will acquire (or, in the case of any Existing Letter of Credit, will be deemed to have acquired) a participation in each Letter of Credit equal to its Pro Rata Share of the portion of the face amount of such Letter of Credit allocated to this Agreement under clause (iv); (iii) the provisions of Section 2.6 of the Credit Agreements will operate, and the Agent, each Issuing Bank and each Lender will have the same rights and obligations, as if the Letters of Credit had been issued under a single credit agreement having the terms set forth in Section 2.6; and (iv) the portion of each Letter of Credit deemed issued under this Agreement shall be equal to a fraction the numerator of which is the Aggregate Commitment at such time and the denominator of which is the sum of the Aggregate Commitment at such time (in each case, as the Commitments and the Aggregate Commitment are adjusted from time to time in accordance with the provisions of this Agreement) and the “Aggregate Commitment” under the Supplemental Credit Agreement (as so adjusted) at such time (or, if the Aggregate Commitment has been terminated, a fraction the numerator of which is the Aggregate Revolving Credit Exposure at such time and the denominator of which is the sum of the Aggregate Revolving Credit Exposure at such time and the “Aggregate Revolving Credit Exposure” under the Supplemental Credit Agreement at such time).

(c) No reduction of the “Commitment” of any Lender under the Supplemental Credit Agreement shall be made unless the Extended Commitment of such Lender shall be simultaneously ratably reduced.

(d) No payment of interest on any “Revolving Loan”, and no payment of fees, shall be made under the Supplemental Credit Agreement unless a simultaneous ratable payment is made of interest on the Corresponding Loan of the same Lender hereunder or of fees hereunder.

(e) No assignment shall be made of any “Extended Commitment” of any Lender, or of any Loans made pursuant to such a Commitment or any rights or interests related thereto, under the Supplemental Credit Agreement unless a ratable assignment is made of the Extended Commitment of such Lender, and of the corresponding Loans made pursuant to such Commitment and the corresponding rights or interests, under this Agreement.

(f) The Borrower Sublimits shall apply on a combined basis to borrowings and other extensions of credit under both Credit Agreements.

(g) Borrowing and prepayment minimums and multiples shall apply on a combined basis to borrowings and prepayments under both Credit Agreements.

(h) No amendment shall be made to one Credit Agreement without a corresponding amendment to the other. Voting shall be separate under the two Credit Agreements.

(i) A single promissory note will evidence the obligations of each Borrower under both Credit Agreements.

(j) The Agent and the Borrowers shall be authorized to make such other amendments as they shall deem advisable to implement the intent that the Lenders under this Agreement will have the same rights and benefits, on a ratable basis, as Consenting Lenders under the Supplemental Credit Agreement.

16.2. After the Commitment Termination Date. Upon the termination of the Non-Extended Commitments on the Commitment Termination Date, (a) all the “Commitments” and “Credit Extensions” under the Supplemental Credit Agreement (together with all amounts accrued or owing in respect thereof or otherwise under the Supplemental Credit Agreement) shall be deemed to be outstanding under this Agreement, (b) each of the Aggregate Commitment and the Commitment Schedule will be automatically amended to reflect the addition of the “Commitments” under the Supplemental Credit Agreement and (c) the Supplemental Credit Agreement shall terminate.

IN WITNESS WHEREOF, the Borrowers, the Lenders and the Agent have executed this Agreement as of the date first above written.


AMEREN CORPORATION,

	by
		Name:	Jerre E. Birdsong
		Title:	Vice President and Treasurer

UNION ELECTRIC COMPANY,

	by
		Name:	Jerre E. Birdsong
		Title:	Vice President and Treasurer

AMEREN ENERGY GENERATING COMPANY,

	by
		Name:	Jerre E. Birdsong
		Title:	Vice President and Treasurer


JPMORGAN CHASE BANK, N.A., as Agent, as a Lender and as an Issuing Bank,

	by
		Name:
		Title:

BARCLAYS BANK PLC, as Syndication Agent, as a Lender and as an Issuing Bank,

	by
		Name:
		Title:

“Level I Status” exists at any date if, on such date, the applicable Borrower’s Moody’s Rating is A2 or better or the applicable Borrower’s S&P Rating is A or better.

“Level II Status” exists at any date if, on such date, (i) the applicable Borrower has not qualified for Level I Status and (ii) the applicable Borrower’s Moody’s Rating is A3 or better or the applicable Borrower’s S&P Rating is A- or better.

“Level III Status” exists at any date if, on such date, (i) the applicable Borrower has not qualified for Level I Status or Level II Status and (ii) the applicable Borrower’s Moody’s Rating is Baa1 or better or the applicable Borrower’s S&P Rating is BBB+ or better.

“Level IV Status” exists at any date if, on such date, (i) the applicable Borrower has not qualified for Level I Status, Level II Status or Level III Status and (ii) the applicable Borrower’s Moody’s Rating is Baa2 or better or the applicable Borrower’s S&P Rating is BBB or better.

“Level V Status” exists at any date if, on such date, (i) the applicable Borrower has not qualified for Level I Status, Level II Status, Level III Status or Level IV Status and (ii) the applicable Borrower’s Moody’s Rating is Baa3 or better or the applicable Borrower’s S&P Rating is BBB- or better.

“Level VI Status” exists at any date if, on such date, the applicable Borrower has not qualified for Level I Status, Level II Status, Level III Status, Level IV Status, or Level V Status.

“Moody’s Rating” means, at any time, one of the following three ratings (in the order in which they are to be referenced based on availability): (i) the public rating issued by Moody’s Investors Service, Inc. (“Moody’s”) and then in effect with respect to the applicable Borrower’s senior unsecured long-term debt securities without third-party credit enhancement, (ii) the public rating issued by Moody’s and then in effect with respect to the applicable Borrower’s Obligations under this Agreement without third-party credit enhancement or (iii) the rating one level below the rating issued by Moody’s and then in effect with respect to the applicable Borrower’s senior secured long-term debt or first mortgage bond obligations (in each case, without third-party credit enhancement).

“S&P Rating” means, at any time, one of the following three ratings (in the order in which they are to be referenced based on availability): (i) the public rating issued by Standard and Poor’s Rating Services (“S&P”) and then in effect with respect to the applicable Borrower’s senior unsecured long-term debt securities without third-party credit enhancement, (ii) the public rating issued by S&P and then in effect with respect to the applicable Borrower’s Obligations under this Agreement without third-party credit enhancement or (iii) the rating one level below the rating issued by S&P and then in effect with respect to the applicable Borrower’s senior secured long-term debt or first mortgage bond obligations (in each case, without third-party credit enhancement).

“Status” means Level I Status, Level II Status, Level III Status, Level IV Status, Level V Status or Level IV Status.

“Usage” refers to the Aggregate Outstanding Credit Exposure on any date expressed as a percentage of the Aggregate Commitment on such date.

The Applicable Margin with respect to (i) Advances held by Declining Lenders and made pursuant to Non-Extended Commitments and (ii) LC Disbursements held by Declining Lenders arising in respect of participations in Letters of Credit made pursuant to Non-Extended Commitments shall be determined in accordance with the foregoing table based on the applicable Borrower’s Status as determined from its then-current Moody’s Rating and S&P Rating. The Applicable Fee Rate shall be determined (a) with respect to Facility Fees in respect of Non-Extended Commitments, in accordance with the foregoing table based on the Company’s Status as determined from its then-current Moody’s Rating and S&P Rating and (b) with respect to LC Participation Fees in respect of participations in Letters of Credit made by Declining Lenders pursuant to Non-Extended Commitments, in accordance with the foregoing table based on the applicable Borrower’s Status as determined from its then-current Moody’s Rating and S&P Rating. The Rating in effect on any date for the purposes of this Schedule is that in effect at the close of business on such date. If at any time any Borrower has no Moody’s Rating or no S&P Rating, Level VI Status shall exist with respect to such Borrower.

If the Company or the applicable Borrower is split-rated and the ratings differential is one level, then each rating agency will be deemed to have a rating in the higher level. If the Company or the applicable Borrower is split-rated and the ratings differential is two levels or more, then each rating agency will be deemed to have a rating one level above the lower rating, unless either rating is below BB+ or unrated (in the case of S&P) or below Ba1 or unrated (in the case of Moody’s), in which case each rating agency will be deemed to have a rating in the lower level.

Level Status shall be determined based upon the applicable Ratings for the applicable Borrower provided by Moody’s and S&P. If the applicable Borrower is split-rated, then (a) if the Ratings differential is one level, each rating agency will be deemed to have a Rating in the higher level and (b) if the Ratings differential is two levels or more, then each rating agency will be deemed to have a Rating one level above the lower Rating.

The Applicable Margin with respect to (i) Advances held by Consenting Lenders and made pursuant to Extended Commitments and (ii) LC Disbursements held by Consenting Lenders arising in respect of participations in Letters of Credit made pursuant to Extended Commitments shall be determined in accordance with the foregoing table based on the applicable Borrower’s Status as determined from its then-current Moody’s Rating and S&P Rating. The Applicable Fee Rate shall be determined (a) with respect to Facility Fees in respect of Extended Commitments, in accordance with the foregoing table based on the Company’s Status as determined from its then-current Moody’s Rating and S&P Rating and (b) with respect to LC Participation Fees in respect of participations in Letters of Credit made by Consenting Lenders pursuant to Extended Commitments, in accordance with the foregoing table based on the applicable Borrower’s Status as determined from its then-current Moody’s Rating and S&P Rating.

The Rating in effect on any date for the purposes of this Schedule is that in effect at the close of business on such date.

“Level I Status” exists at any date if, on such date, the applicable entity’s Moody’s Rating is A2 or better or the applicable entity’s S&P Rating is A or better.

“Level II Status” exists at any date if, on such date, (i) the applicable entity has not qualified for Level I Status and (ii) the applicable entity’s Moody’s Rating is A3 or better or the applicable entity’s S&P Rating is A- or better.

“Level III Status” exists at any date if, on such date, (i) the applicable entity has not qualified for Level I Status or Level II Status and (ii) the applicable entity’s Moody’s Rating is Baa1 or better or the applicable entity’s S&P Rating is BBB+ or better.

“Level IV Status” exists at any date if, on such date, (i) the applicable entity has not qualified for Level I Status, Level II Status or Level III Status and (ii) the applicable entity’s Moody’s Rating is Baa2 or better or the applicable entity’s S&P Rating is BBB or better.

“Level V Status” exists at any date if, on such date, (i) the applicable entity has not qualified for Level I Status, Level II Status, Level III Status or Level IV Status and (ii) the applicable entity’s Moody’s Rating is Baa3 or better or the applicable entity’s S&P Rating is BBB- or better.

“Level VI Status” exists at any date if, on such date, the applicable entity has not qualified for Level I Status, Level II Status, Level III Status, Level IV Status or Level V Status. Level VI Status also exists on any date if, on such date, the applicable entity does not have at least two Ratings in effect.

“Status” means Level I Status, Level II Status, Level III Status, Level IV Status, Level V Status, or Level VI Status.

“Moody’s Rating” means, at any time, the public rating issued by Moody’s Investors Service, Inc. (“Moody’s”) as then in effect with respect to the applicable Borrower’s senior unsecured long-term debt securities without third-party credit enhancement (which may include a preliminary rating of a shelf registration of the applicable Borrower’s senior unsecured long-term debt securities without third-party credit enhancement).

“S&P Rating” means, at any time, the public rating issued by Standard and Poor’s Rating Services, a division of The McGraw Hill Companies, Inc. (“S&P”), as then in effect with respect to the applicable Borrower’s senior unsecured long-term debt securities without third-party credit enhancement (which may include a preliminary rating of a shelf registration of the applicable Borrower’s senior unsecured long-term debt securities without third-party credit enhancement).

8.2 Amendments. Subject to the provisions of this Section 8.2, the Required Lenders (or the Agent with the consent in writing of the Required Lenders) and the Borrowers may enter into agreements supplemental hereto for the purpose of adding or modifying any provisions to the Loan Documents or changing in any manner the rights of the Lenders or the Borrowers hereunder or thereunder or waiving any Default hereunder or thereunder; provided, however, that no such supplemental agreement shall, without the consent of each affected Lender:

8.2.2 Waive any condition set forth in Section 4.2, or, other than as provided in Section 2.24, reduce the percentage specified in the definition of Required Lenders or any other percentage of Lenders specified to be the Pro Rata Share in this Agreement to act on specified matters or amend the definition of “Pro Rata Share”.

8.2.3 Extend the Extended Commitment Termination Date, or reduce the amount or extend the payment date for, the mandatory payments required under Section 2.2, or increase the amount of the Commitment of any such affected Lender hereunder or increase any Borrower Sublimit hereunder, or permit any Borrower to assign its rights or obligations under this Agreement or change Section 2.15, 2.8.3 or 11.2 in a manner that would alter the pro rata sharing of payments or the application of reductions of commitments on a ratable basis required thereby.

No amendment of any provision of this Agreement relating to the Agent or any Issuing Bank shall be effective without the written consent of the Agent or such Issuing Bank, as the case may be. The Agent may waive payment of the fee required under Section 12.3.3 without obtaining the consent of any other party to this Agreement. Notwithstanding the foregoing, the approval of the Required Lenders shall not be required for any Commitment Increase Amendment and any provision of this Agreement may be amended by an agreement in writing entered into by the Borrowers, the Required Lenders and the Agent if (i) by the terms of such agreement any remaining Commitment of each Lender not consenting to the amendment provided for therein shall terminate upon the effectiveness of such amendment and (ii) at the time such amendment becomes effective, each Lender not consenting thereto receives payment in full of the principal of and interest accrued on each Advance made by it and all other amounts owing to it or accrued for its account under this Agreement.

Following are the agreements or other arrangements existing as of the effective date of the Amended and Restated Credit Agreement dated as of June __, 2009, (the “Agreement”), among the Company, the Borrowing Subsidiaries, the lending institutions identified therein as Lenders, JPMorgan Chase Bank, as Agent, and Barclays Bank PLC, as Syndication Agent and provisions, that prohibit, restrict or impose any condition upon the ability of the Company or any Subsidiary (other than a Project Finance Subsidiary) (i) to pay dividends or make any other distribution on its common stock, (ii) to pay any Indebtedness or other obligation owed to such Borrower or any other Subsidiary of such Borrower, or (iii) to make loans or advances or other Investments in such Borrower or any other Subsidiary of such Borrower. The following list does not include restrictions and conditions imposed by law or by the above-referenced Agreement. Terms defined in the above-referenced Agreement are used herein with the same meanings.

Union Electric Subordinated Deferrable Interest Debentures 7.69% Series A due 2036: Dividend Restriction. If Union Electric exercises its right to extend the interest payment period on the debentures, Union Electric may not, during any such extension period, declare or pay any dividend on, or redeem, purchase, acquire or make a liquidation payment with respect to, any of its capital stock or make any guarantee payments with respect to the foregoing.

Genco Indenture dated November 1, 2000, as supplemented: Restricted/Conditional Payments. So long as any senior notes are outstanding, (a) if Genco’s Senior Debt Service Coverage Ratio calculated on a Pro-Forma Basis (both as defined in Article I of this indenture) is below 1.75 to 1.0 for the most recently ended four fiscal quarters prior to the date of measurement or, based on projections prepared by Genco, below 1.75 to 1.0 (or 1.50 to 1.0 under circumstances described in Section 3.11(b) of this indenture) for any of the succeeding four six-month periods from the month including the date of measurement, Genco may not (i) pay dividends on or redeem or repurchase its capital stock or (ii) make payments of principal or interest on any subordinated indebtedness Genco has issued except for Genco’s $552 million promissory note with CIPS dated May 1, 2000 unless any such redemption or repurchase of capital stock or subordinated indebtedness is paid from proceeds received from the concurrent issuance of capital stock or other subordinated indebtedness, and (b) Genco may not make any principal payment on the $552 million promissory note with CIPS other than the final payment due upon maturity if Genco does not have sufficient Available Cash (as defined in Article I of this indenture) to do so. There are no restrictions or conditions in the Indenture limiting Genco’s ability to make repayments of borrowings under, or investments in, the Company’s Non-utility Money Pool Agreement.

The Federal Energy Regulatory Commission has issued the following orders under the Federal Power Act to authorize the incurrence by Union Electric Company (“Union Electric”) and Ameren Energy Generating Company (“Genco”) of the Indebtedness contemplated by this Agreement:

I, S.R. Sullivan, am the Senior Vice President, General Counsel and Secretary of Ameren Corporation, a Missouri corporation (the “Company”), and its subsidiaries Union Electric Company, a Missouri corporation (“UE”) and Ameren Energy Generating Company, an Illinois corporation (“Genco”) (the Company and such subsidiaries each a “Borrower” and collectively, the “Borrowers”). I, or lawyers under my direction, have acted as counsel for each of the Borrowers in connection with (i) the Amendment Agreement dated as of June 30, 2009 (the “Amendment Agreement”), among the Company, UE, Genco, as borrowers, the lenders party hereto (the “Lenders”), JPMorgan Chase Bank, N.A., as Administrative Agent (the “Agent”) and Barclays Bank PLC, as Syndication Agent (the “Syndication Agent”), in respect of the Amended and Restated Credit Agreement dated as of July 14, 2006, among the Borrowers, Central Illinois Public Service Company, an Illinois corporation, Central Illinois Light Company, an Illinois corporation, and Illinois Power Company, an Illinois corporation, the Lenders, the Agent, and the Syndication Agent, (ii) the Amended and Restated Credit Agreement amended and restated as of June 30, 2009 (the “Amended and Restated Credit Agreement”) among the Borrowers, the Lenders, the Agent, and the Syndication Agent, and (iii) the Supplemental Credit Agreement dated as of June 30, 2009 (the “Supplemental Credit Agreement,” and together with the Amendment Agreement, the Amended and Restated Credit Agreement, and, in each case, any Notes issued pursuant thereto, the “Loan Documents”) among the Borrowers, the lenders from time to time parties thereto, the Agent, and the Syndication Agent. Capitalized terms used and not defined herein have the meanings assigned to such terms in the Amendment Agreement, the Amended and Restated Credit Agreement and the Supplemental Credit Agreement, as applicable.

In rendering the opinion expressed below, I, or lawyers under my direction, have examined originals or copies, certified or otherwise identified to my satisfaction, of such documents, corporate records, certificates of public officials and other instruments and have conducted such other investigations of fact and law as I have deemed necessary or advisable for purposes of this opinion.

(other than those of representatives of the Borrowers appearing on the Amendment Agreement, the Supplemental Credit Agreement, and the Notes), the authenticity of all documents furnished to me as originals, the conformity to originals of all documents furnished to me as certified or photostatic copies and the authenticity of the originals of such documents. In addition, I have assumed without independent investigation that (i) the Amendment Agreement and the Supplemental Credit Agreement have been duly authorized, executed and delivered by the Lenders and the Agent, and constitute their valid, lawful and binding obligation and agreement, and (ii) there is no separate agreement, undertaking, or course of dealing modifying, varying or waiving any of the terms of the Loan Documents. As to matters of fact not independently established by me relevant to the opinions set forth herein, I have relied without independent investigation on the representations contained in the Loan Documents and in certificates of public officials and responsible representatives of each Borrower furnished to me; provided, however, that I advise that in the course of my representation of the Borrowers, I obtained no information that leads me to believe that any such representation or certificate is untrue or misleading in any material respect.

1. Each of the Borrowers and each of their Subsidiaries (other than any Project Finance Subsidiary or Non-Material Subsidiary or an SPC) is a corporation, partnership (in the case of Subsidiaries only) or limited liability company duly and properly incorporated or organized, as the case may be, validly existing and (to the extent such concept applies to such entity) in good standing under the laws of its jurisdiction of incorporation or organization and has all requisite authority to conduct its business as presently conducted in each jurisdiction in which its business is conducted, other than the failure of any such Borrower to be qualified to transact business in any such jurisdiction to the extent such failure could not reasonably be expected to result in a Material Adverse Effect.

2. Each of the Borrowers has the power and authority and legal right to execute and deliver the Amendment Agreement, the Supplemental Credit Agreement, and the Notes and to perform its obligations under the Loan Documents. The execution and delivery by each of the Borrowers of the Amendment Agreement, the Supplemental Credit Agreement, and the Notes and the performance by each of the Borrowers of its obligations under the Loan Documents have been duly authorized by proper proceedings, and the Loan Documents to which such Borrower is a party constitute legal, valid and binding obligations of such Borrower enforceable against such Borrower in accordance with their terms, except as enforceability may be limited by (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, or similar laws relating to or affecting the enforcement of creditors’ rights generally; (ii) general equitable principles (whether considered in a proceeding in equity or at law); and (iii) requirements of reasonableness, good faith and fair dealing.

3. Neither the execution and delivery by the Borrowers of the Amendment Agreement, the Supplemental Credit Agreement, and the Notes, nor the consummation of the transactions contemplated in the Loan Documents, nor compliance with the provisions of the Loan Documents will violate (i) any law, rule, regulation, order, writ, judgment, injunction, decree or award binding on such Borrower or any of its Subsidiaries or (ii) such Borrower’s or any Subsidiary’s articles or certificate of incorporation, partnership agreement, certificate of partnership, articles or certificate of organization, by-laws, or operating agreement or other management agreement, as the case may be, or (iii) the provisions of any indenture, any material instrument or any material agreement to which such Borrower or any of its Subsidiaries is a party or is subject, or by which it, or its Property, is bound, or conflict with, or constitute a default under, or result in, or require, the creation or imposition of any Lien in, of or on the Property of such Borrower or a Subsidiary pursuant to the terms of, any such indenture, instrument or agreement. No order, consent, adjudication, approval, license, authorization, or validation of, or filing, recording or registration with, or exemption by, or other action in respect of any governmental or public body or authority, or any subdivision thereof, which has not been obtained by such Borrower or any of its Subsidiaries, is required to be obtained by such Borrower or any of its Subsidiaries in connection with the execution and delivery of the Amendment Agreement, the Supplemental Credit Agreement, and the Notes, the borrowings and issuances of Letters of Credit for account of such Borrower under the Loan Documents, the payment and performance by such Borrower of its Obligations or the legality, validity, binding effect or enforceability of any of the Loan Documents with respect to such Borrower.

4. Except for the Disclosed Matters, there is no litigation, arbitration, governmental investigation, proceeding or inquiry currently existing, or, to the best of my knowledge after due inquiry, pending or threatened against or affecting the Borrowers or any of their Subsidiaries, which, if determined adversely to such Borrower or any Subsidiary, could reasonably be expected to have a Material Adverse Effect with respect to such Borrower or any of its Subsidiaries or which seeks to prevent, enjoin or delay the making of any Loans or would adversely effect the legality, validity or enforceability of the Loan Documents as to such Borrower or the ability of such Borrower to perform the transactions contemplated therein.

5. No Borrower is an “investment company” or a company “controlled” by an “investment company,” within the meaning of the Investment Company Act of 1940, as amended.

6. The Company is a “holding company” and each of UE and Genco is a “public-utility”, as such terms are defined in the Public Utility Holding Company Act of 2005. The FERC, in accordance with the Federal Power Act, has issued an order authorizing the incurrence of short-term indebtedness by each of UE and Genco in an aggregate principal amount outstanding not to exceed $ 1 billion and $500,000,000, respectively, subject to, among other things, the

condition that all such indebtedness be issued on or before March 31, 2010. Unless such authorization is no longer required by applicable laws and regulations, additional authorization from the FERC (or any governmental agency that succeeds to the authority of the FERC) will be necessary for each of UE and Genco to obtain any Advances under the Supplemental Credit Agreement and the Amended and Restated Credit Agreement or to incur or issue short-term indebtedness, including without limitation Advances extended under the Supplemental Credit Agreement and the Amended and Restated Credit Agreement after March 31, 2010. Except for the aforesaid order of the FERC, no regulatory authorizations, approvals, consents, registrations, declarations or filings are required in connection with the borrowings by, and issuances of Letters of Credit for the account of, the Borrowers under the Supplemental Credit Agreement or the Amended and Restated Credit Agreement or the performance by each Borrower of its Obligations under the Loan Documents, except where the failure to have obtained, made or maintained any such authorizations, approvals, consents, registrations, declarations or filings could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower. No regulatory authorizations, approvals, consents, registrations, declarations or filings are required in connection with the borrowings by, and issuances of Letters of Credit for the account of, any Borrower under the Supplemental Credit Agreement and the Amended and Restated Credit Agreement or the performance by any Borrower of its Obligations, except as set forth above or where the failure to have obtained, made or maintained any such authorizations, approvals, consents, registrations, declarations or filings could not reasonably be expected to result in a Material Adverse Effect with respect to such Borrower.

7. In a properly presented case, a Missouri court or a federal court applying Missouri choice of law rules should give effect to the choice of law provisions of the Loan Documents and should hold that the Loan Documents are to be governed by the laws of the State of New York rather than the laws of the State of Missouri. In rendering the foregoing opinion, I note that by their terms the Loan Documents expressly select New York law as the law governing their interpretation and that the Loan Documents were delivered to the Agent in New York. The choice of law provisions of the Loan Documents are not voidable under the laws of the State of Missouri. Notwithstanding the foregoing, even if a Missouri court or a federal court holds that the Loan Documents are to be governed by the laws of the State of Missouri, the Loan Documents constitute legal, valid and binding obligations of each of the Borrowers, enforceable under Missouri law (including usury provisions) against such Borrower in accordance with their terms, except as enforceability may be limited by (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, or similar laws relating to or affecting the enforcement of creditors’ rights generally; (ii) general equitable principles (whether considered in a proceeding in equity or at law); and (iii) requirements of reasonableness, good faith and fair dealing.

I express no opinion as to the compliance or noncompliance, or the effect of the compliance or noncompliance, of any addressee with any state or federal laws or regulations applicable to it by reason of its status as or affiliation with a federally insured depository institution.

I am a member of the Bar of the State of Missouri and the foregoing opinion is limited to the laws of the State of Missouri and the Federal laws of the United States of America. I note that the Loan Documents are governed by the laws of the State of New York and, for purposes of the opinion expressed in opinion paragraph 2 above, I have assumed that the laws of the State of New York do not differ from the laws of the State of Missouri in any manner that would render such opinion incorrect. This opinion is rendered solely to you in connection with the above matter. This opinion may not be relied upon by you for any other purpose or relied upon by any other Person (other than your successors and assigns as Lenders) without my prior written consent. Notwithstanding anything in this opinion letter to the contrary, you may disclose this opinion (i) to prospective successors and assigns of the addressees hereof, (ii) to regulatory authorities having jurisdiction over any of the addressees hereof or their successors and assigns, and (iii) pursuant to valid legal process, in each case without my prior consent.

This opinion is delivered as of the date hereof and I undertake no, and disclaim any, obligation to advise you of any change in matters of law or fact set forth herein or upon which this opinion is based.

I, Craig W. Stensland, am an Associate General Counsel of Ameren Services Company, a subsidiary of Ameren Corporation, a Missouri corporation (the “Company”) and an affiliate of Ameren Energy Generating Company, an Illinois corporation (“Genco”) which provides legal and other professional services to Genco. I, or lawyers under my direction, have acted as counsel for Genco in connection with (i) the Amendment Agreement dated as of June 30, 2009 (the “Amendment Agreement”), among the Company, Union Electric Company, a Missouri corporation (“UE”), and Genco (each a “Borrower”, and collectively, the “Borrowers”), the lenders party hereto (the “Lenders”), JPMorgan Chase Bank, N.A., as Administrative Agent (the “Agent”) and Barclays Bank PLC, as Syndication Agent (the “Syndication Agent”), in respect of the Amended and Restated Credit Agreement dated as of July 14, 2006, among the Borrowers, Central Illinois Public Service Company, an Illinois corporation, Central Illinois Light Company, an Illinois corporation, and Illinois Power Company, an Illinois corporation, the Lenders, the Agent, and the Syndication Agent, (ii) the Amended and Restated Credit Agreement amended and restated as of June 30, 2009 (the “Amended and Restated Credit Agreement”) among the Borrowers, the Lenders, the Agent, and the Syndication Agent, and (iii) the Supplemental Credit Agreement dated as of June 30, 2009 (the “Supplemental Credit Agreement,” and together with the Amendment Agreement, the Amended and Restated Credit Agreement, and, in each case, any Notes issued pursuant thereto, the “Loan Documents”) among the Borrowers, the lenders from time to time parties thereto, the Agent, and the Syndication Agent. Capitalized terms used and not defined herein have the meanings assigned to such terms in the Amendment Agreement, the Amended and Restated Credit Agreement and the Supplemental Credit Agreement, as applicable.

In making the examinations described above, I have assumed without independent investigation the capacity of natural persons (other than the office held by each representative of the Borrowers) as reflected adjacent to such individual’s signature on the Loan Documents, the genuineness of all signatures (other than those of representatives of Genco appearing on the Amendment Agreement, the Supplemental Credit Agreement, and the Notes), the authenticity of all documents furnished to me as originals, the conformity to originals of all documents furnished to me as certified or photostatic copies and the authenticity of the originals of such documents. In addition, I have assumed without independent investigation that (i) the Amendment Agreement and the Supplemental Credit Agreement have been duly authorized, executed and delivered by the Lenders and the Agent, and constitute their valid, lawful and binding obligation and agreement, and (ii) there is no separate agreement, undertaking, or course of dealing modifying, varying or waiving any of the terms of the Loan Documents. As to matters of fact not independently established by me relevant to the opinions set forth herein, I have relied without independent investigation on the representations contained in the Loan Documents and in certificates of public officials and responsible representatives of Genco furnished to me; provided, however, that I advise that in the course of my representation of Genco, I obtained no information that leads me to believe that any such representation or certificate is untrue or misleading in any material respect.

1. Genco and each of its Subsidiaries (other than any Project Finance Subsidiary or Non-Material Subsidiary or an SPC) is a corporation, partnership (in the case of Subsidiaries only) or limited liability company duly and properly incorporated or organized, as the case may be, validly existing and (to the extent such concept applies to such entity) in good standing under the laws of its jurisdiction of incorporation or organization and has all requisite authority to conduct its business as presently conducted in each jurisdiction in which its business is conducted, other than the failure of Genco or any of its Subsidiaries (other than any Project Finance Subsidiary or Non-Material Subsidiary or an SPC) to be qualified to transact business in any such jurisdiction to the extent such failure could not reasonably be expected to result in a Material Adverse Effect.

2. Genco has the power and authority and legal right to execute and deliver the Amendment Agreement, the Supplemental Credit Agreement, and the Notes and to perform its obligations under the Loan Documents. The execution and delivery by Genco of the Amendment Agreement, the Supplemental Credit Agreement, and the Notes and the performance by Genco of its obligations under the Loan Documents have been duly authorized by proper proceedings, and the Loan Documents to which Genco is a party constitute legal, valid and binding obligations of Genco enforceable against Genco in accordance with their terms, except as enforceability may be limited by (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, or similar laws relating to or affecting the enforcement of creditors’ rights generally; (ii) general equitable principles (whether considered in a proceeding in equity or at law); and (iii) requirements of reasonableness, good faith and fair dealing.

3. Neither the execution and delivery by Genco of the Amendment Agreement, the Supplemental Credit Agreement, and the Notes, nor the consummation of the transactions contemplated in the Loan Documents, nor compliance with the provisions of the Loan Documents will violate (i) any law, rule, regulation, order, writ, judgment, injunction, decree or award binding on Genco or any of its Subsidiaries, or (ii) Genco’s or any Subsidiary’s articles or certificate of incorporation, partnership agreement, certificate of partnership, articles or certificate of organization, by-laws, or operating agreement or other management agreement, as the case may be, or (iii) the provisions of any indenture, material instrument or material agreement to which Genco or any of its Subsidiaries is a party or is subject, or by which it, or its Property, is bound, or conflict with, or constitute a default under, or result in, or require, the creation or imposition of any Lien in, of or on the Property of Genco or a Subsidiary pursuant to the terms of, any such indenture, instrument or agreement. No order, consent, adjudication, approval, license, authorization, or validation of, or filing, recording or registration with, or exemption by, or other action in respect of any governmental or public body or authority, or any subdivision thereof, which has not been obtained by Genco or any of its Subsidiaries, is required to be obtained by Genco or any Subsidiary in connection with the execution and delivery of the Amendment Agreement, the Supplemental Credit Agreement, and the Notes, the issuances of Letters of Credit for the account of Genco under the Loan Documents, the payment and performance by Genco of its Obligations or the legality, validity, binding effect or enforceability as to Genco of any of the Loan Documents.

4. In a properly presented case, an Illinois court or a federal court applying Illinois choice of law rules should give effect to the choice of law provisions of the Loan Documents and should hold that the Loan Documents are to be governed by the laws of the State of New York rather than the laws of the State of Illinois. In rendering the foregoing opinion, I note that by their terms the Loan Documents expressly select New York law as the law governing their interpretation and that the Loan Documents were delivered to the Agent in New York. The choice of law provisions of the Loan Documents are not voidable under the laws of the State of Illinois. Notwithstanding the foregoing, even if an Illinois court or a federal court holds that the Loan Documents are to be governed by the laws of the State of Illinois, the Loan Documents constitute legal, valid and binding obligations of Genco, enforceable under Illinois law (including usury provisions) against Genco in accordance with their terms, except as enforceability may be limited by (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, or similar laws relating to or affecting the enforcement of creditors’ rights generally; (ii) general equitable principles (whether considered in a proceeding in equity or at law); and (iii) requirements of reasonableness, good faith and fair dealing.

I am a member of the Bar of the State of Illinois and the foregoing opinion is limited to the laws of the State of Illinois and the Federal laws of the United States of America. I note that the Loan Documents are governed by the laws of the State of New York and, for purposes of the opinion expressed in opinion paragraph 2 above, I have assumed that the laws of the State of New York do not differ from the laws of the State of Illinois in any manner that would render such opinion incorrect. This opinion is rendered solely to you in connection with the above matter. This opinion may not be relied upon by you for any other purpose or relied upon by any other Person (other than your successors and assigns as Lenders) without my prior written consent. Notwithstanding anything in this opinion letter to the contrary, you may disclose this opinion (i) to prospective successors and assigns of the addressees hereof, (ii) to regulatory authorities having jurisdiction over any of the addressees hereof or their successors and assigns, and (iii) pursuant to valid legal process, in each case without my prior consent.


Very truly yours,


		Craig W. Stensland
		Associate General Counsel
		Ameren Services Company

This Compliance Certificate is furnished pursuant to that certain Amended and Restated Credit Agreement dated as of June [ ], 2009 (as amended, modified, renewed or extended from time to time, the “Agreement”) among Ameren Corporation (the “Company”), and its subsidiaries Union Electric Company and Ameren Energy Generating Company (the Company and such subsidiaries each, a “Borrower” and collectively, the “Borrowers”), the lenders party thereto, JPMorgan Chase Bank, N.A., as Agent and Barclays Bank PLC, as Syndication Agent for the Lenders. Unless otherwise defined herein, capitalized terms used in this Compliance Certificate have the meanings ascribed thereto in the Agreement.

2. I have reviewed the terms of the Agreement and I have made, or have caused to be made under my supervision, a detailed review of the transactions and conditions of each Borrower and its Subsidiaries during the accounting period covered by the attached financial statements;

3. The examinations described in paragraph 2 did not disclose, and I have no knowledge of, the existence of any condition or event which constitutes a Default or Unmatured Default during or at the end of the accounting period covered by the attached financial statements or as of the date of this Certificate, except as set forth below; and

4. Schedule I attached hereto sets forth financial data and computations evidencing each Borrower’s compliance with certain covenants of the Agreement as of the end of the most recent fiscal quarter for which such financial data and computations have been prepared.

Described below are the exceptions, if any, to paragraph 3 by listing, in detail, the nature of the condition or event, the period during which it has existed and the action which the applicable Borrower has taken, is taking, or proposes to take with respect to each such condition or event:

The foregoing certifications, together with the computations set forth in Schedule I hereto and the financial statements delivered with this Compliance Certificate in support hereof, are made and delivered this day of , .

This Assignment Agreement (the “Assignment Agreement”) is dated as of the Effective Date set forth below and is entered into by and between [Insert name of Assignor] (the “Assignor”) and [Insert name of Assignee] (the “Assignee”). Capitalized terms used but not defined herein shall have the meanings given to them in the Credit Agreement identified below (as amended, the “Credit Agreement”), receipt of a copy of which is hereby acknowledged by the Assignee. The Terms and Conditions set forth in Annex 1 attached hereto are hereby agreed to and incorporated herein by reference and made a part of this Assignment Agreement as if set forth herein in full.

For an agreed consideration, the Assignor hereby irrevocably sells and assigns to the Assignee, and the Assignee hereby irrevocably purchases and assumes from the Assignor, subject to and in accordance with the Standard Terms and Conditions and the Credit Agreement, as of the Effective Date inserted by the Agent as contemplated below, the interest in and to all of the Assignor’s rights and obligations in its capacity as a Lender under the Credit Agreement and any other documents or instruments delivered pursuant thereto that represents the amount and percentage interest identified below of all of the Assignor’s outstanding rights and obligations under the respective facilities identified below (including without limitation any letters of credit, guaranties and swingline loans included in such facilities and, to the extent permitted to be assigned under applicable law, all claims (including without limitation contract claims, tort claims, malpractice claims, statutory claims and all other claims at law or in equity), suits, causes of action and any other right of the Assignor against any Person whether known or unknown arising under or in connection with the Credit Agreement, any other documents or instruments delivered pursuant thereto or the loan transactions governed thereby) (the “Assigned Interest”). Such sale and assignment is without recourse to the Assignor and, except as expressly provided in this Assignment Agreement, without representation or warranty by the Assignor.

Effective Date: , 20 [TO BE INSERTED BY AGENT AND WHICH SHALL BE THE EFFECTIVE DATE OF RECORDATION OF TRANSFER BY THE AGENT.]


ASSIGNOR
[NAME OF ASSIGNOR]

By:
		Title:

ASSIGNEE
[NAME OF ASSIGNEE]

By:
		Title:

1.1 Assignor. The Assignor represents and warrants that (i) it is the legal and beneficial owner of the Assigned Interest, (ii) the Assigned Interest is free and clear of any lien, encumbrance or other adverse claim and (iii) it has full power and authority, and has taken all action necessary, to execute and deliver this Assignment Agreement and to consummate the transactions contemplated hereby. Neither the Assignor nor any of its officers, directors, employees, agents or attorneys shall be responsible for (i) any statements, warranties or representations made in or in connection with the Credit Agreement or any other Loan Document, (ii) the execution, legality, validity, enforceability, genuineness, sufficiency, perfection, priority, collectibility, or value of the Loan Documents or any collateral thereunder, (iii) the financial condition of the Borrowers, any of their Subsidiaries or Affiliates or any other Person obligated in respect of any Loan Document, (iv) the performance or observance by the Borrowers, any of their Subsidiaries or Affiliates or any other Person of any of their respective obligations under any Loan Document, (v) inspecting any of the property, books or records of the Borrowers, or any guarantor, or (vi) any mistake, error of judgment, or action taken or omitted to be taken in connection with the Loans or the Loan Documents.

1.2. Assignee. The Assignee (a) represents and warrants that (i) it has full power and authority, and has taken all action necessary, to execute and deliver this Assignment Agreement and to consummate the transactions contemplated hereby and to become a Lender under the Credit Agreement, (ii) from and after the Effective Date, it shall be bound by the provisions of the Credit Agreement as a Lender thereunder and, to the extent of the Assigned Interest, shall have the obligations of a Lender thereunder, (iii) agrees that its payment instructions and notice instructions are as set forth in Schedule 1 to this Assignment Agreement, (iv) none of the funds, monies, assets or other consideration being used to make the purchase and assumption hereunder are “plan assets” as defined under ERISA and that its rights, benefits and interests in and under the Loan Documents will not be “plan assets” under ERISA, (v) agrees to indemnify and hold the Assignor harmless against all losses, costs and expenses (including, without limitation, reasonable attorneys’ fees) and liabilities incurred by the Assignor in connection with or arising in any manner from the Assignee’s non-performance of the obligations assumed under this Assignment Agreement, (vi) it has received a copy of the Credit Agreement, together with copies of financial statements and such other documents and information as it has deemed appropriate to make its own credit analysis and decision to enter into this Assignment Agreement and to purchase the Assigned Interest on the basis of which it has made such analysis and decision independently and without reliance on the Agent or any other Lender, and (vii) attached as Schedule 1 to this Assignment Agreement is any documentation required to be delivered by the Assignee with respect to its tax status pursuant to the terms of the Credit Agreement, duly completed and executed by the Assignee and (b) agrees that (i) it will, independently and without reliance on the Agent, the Assignor 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 decisions in taking or not taking action under the Loan Documents, and (ii) it will perform in accordance with their terms all of the obligations which by the terms of the Loan Documents are required to be performed by it as a Lender.

2. Payments. The Assignee shall pay the Assignor, on the Effective Date, the amount agreed to by the Assignor and the Assignee. From and after the Effective Date, the Agent shall make all payments in respect of the Assigned Interest (including payments of principal, interest, fees and other amounts) to the Assignor for amounts which have accrued to but excluding the Effective Date and to the Assignee for amounts which have accrued from and after the Effective Date.

3. General Provisions. This Assignment Agreement shall be binding upon, and inure to the benefit of, the parties hereto and their respective successors and assigns. This Assignment Agreement may be executed in any number of counterparts, which together shall constitute one instrument. Delivery of an executed counterpart of a signature page of this Assignment Agreement by telecopy shall be effective as delivery of a manually executed counterpart of this Assignment Agreement. This Assignment Agreement shall be governed by, and construed in accordance with, the law of the State of New York.

Ameren Corporation (“Ameren”) hereby specifically authorizes and directs the Agent to act upon the following standing money transfer instructions with respect to the proceeds of Advances or other extensions of credit to Ameren from time to time until receipt by the Agent of a specific written revocation of such instructions by Ameren, provided, however, that the Agent may otherwise transfer funds as hereafter directed in writing by Ameren in accordance with Section 13.1 of the Credit Agreement or based on any telephonic notice made in accordance with Section 2.17 of the Credit Agreement.

Union Electric Company (“Union Electric”) hereby specifically authorizes and directs the Agent to act upon the following standing money transfer instructions with respect to the proceeds of Advances or other extensions of credit to Union Electric from time to time until receipt by the Agent of a specific written revocation of such instructions by Union Electric, provided, however, that the Agent may otherwise transfer funds as hereafter directed in writing by Union Electric in accordance with Section 13.1 of the Credit Agreement or based on any telephonic notice made in accordance with Section 2.17 of the Credit Agreement.

Ameren Energy Generating Company (“Genco”) hereby specifically authorizes and directs the Agent to act upon the following standing money transfer instructions with respect to the proceeds of Advances or other extensions of credit to Genco from time to time until receipt by the Agent of a specific written revocation of such instructions by Genco, provided, however, that the Agent may otherwise transfer funds as hereafter directed in writing by Genco in accordance with Section 13.1 of the Credit Agreement or based on any telephonic notice made in accordance with Section 2.17 of the Credit Agreement.

, a corporation (the “Borrower”), promises to pay to the order of (the “Lender”) on the Availability Termination Date DOLLARS ($ ) or, if less, the aggregate unpaid principal amount of all Loans made by the Lender to the Borrower pursuant to Article II of the Agreement (as hereinafter defined), in immediately available funds at the main office of JPMorgan Chase Bank, N.A., in New York, New York, as Agent, together with accrued but unpaid interest thereon. The Borrower shall pay interest on the unpaid principal amount hereof at the rates and on the dates set forth in the Agreement.

The Lender shall, and is hereby authorized to, record on the schedule attached hereto, or to otherwise record in accordance with its usual practice, the date and amount of each Revolving Loan and the date and amount of each principal payment hereunder.

This Note is one of the Notes issued pursuant to, and is entitled to the benefits of the Amended and Restated Credit Agreement dated as of June 30, 2009 (which, as it may be amended or modified and in effect from time to time, is herein called the “Agreement”), among Ameren Corporation, Union Electric Company and Ameren Energy Generating Company, the lenders party thereto, including the Lender, JPMorgan Chase Bank, N.A., as Agent and Barclays Bank PLC, as Syndication Agent, to which Agreement reference is hereby made for a statement of the terms and conditions governing this Note, including the terms and conditions under which this Note may be prepaid or its maturity date accelerated. Capitalized terms used herein and not otherwise defined herein are used with the meanings attributed to them in the Agreement.

THIS NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

Reference is made to the Amended and Restated Credit Agreement dated as of June [ ], 2009 (as amended or otherwise modified from time to time, the “Credit Agreement”) among Ameren Corporation, a Missouri corporation (the “Company”), and its subsidiaries Union Electric Company, a Missouri corporation and Ameren Energy Generating Company, an Illinois corporation (the Company and such subsidiaries each, a “Borrower” and collectively, the “Borrowers”), the lenders from time to time party thereto (the “Lenders”), JPMorgan Chase Bank, N.A., (having its principal office in New York, NY), as Agent and Barclays Bank PLC, as Syndication Agent. Terms defined in the Credit Agreement are used herein as therein defined.

(the “Designating Lender”), (the “Designated Lender”), and the Borrowers agree as follows:

IN WITNESS WHEREOF, the parties have caused this Designation Agreement to be executed by their respective officers hereunto duly authorized, as of the date first above written.


[NAME OF DESIGNATING LENDER]

By:
Name:
Title:

[NAME OF DESIGNATED LENDER]

By:
Name:
Title:

AMEREN CORPORATION

By:
Name:
Title:

UNION ELECTRIC COMPANY

By:
Name:
Title:

All subordinated indebtedness (hereinafter referred to as “Subordinated Debt”) of any Borrower incurred after the date of this Agreement that is not being included in the calculation of Consolidated Indebtedness pursuant to clause (A) of the proviso in Section 6.17 shall be in the form of indebtedness of such Borrower to the Company or any of its Subsidiaries that is subordinate and junior to any and all indebtedness (hereinafter referred to as “Senior Debt”) of such Borrower, whether existing on the date of this Agreement or thereafter incurred, in respect of (i) all Obligations of such Borrower under this Agreement, including Obligations in respect of Letters of Credit, (ii) other borrowings of such Borrower from any one or more banks, insurance companies, pension or profit sharing trusts, or other financial institutions whether secured or unsecured and (iii) all other borrowings incurred, assumed or guaranteed by such Borrower, at any time, evidenced by a note, debenture, bond or other similar instrument (including capitalized lease and purchase money obligations, and/or for the acquisition (whether by way of purchase, merger or otherwise) of any business, real property or other assets (except assets acquired in the ordinary course of business) but excluding obligations other than for borrowed money including trade payables and other obligations to general creditors) other than indebtedness which, by its terms or the terms of the instrument creating or evidencing it, provides that such indebtedness is subordinated to all other indebtedness of such Borrower. Notwithstanding any other provision of this Agreement on this Exhibit G, “Senior Debt” shall include refinancings, renewals, amendments, extensions or refundings of the indebtedness described in clauses (i) through (iii) above.

(a) any default in, or violation of, the terms or covenants of any Senior Debt, including, without limitation, any default in payment of principal of, or premium, if any, or interest on, any Senior Debt whenever due (whether by acceleration of maturity or otherwise), and during the continuance thereof, or

(b) the institution of any liquidation, dissolution, bankruptcy, insolvency, reorganization or similar proceeding relating to any Borrower, its property or its creditors as such,

the obligee of indebtedness so described shall not be entitled to receive any payment of principal of, or premium, if any, or interest on, such indebtedness until all amounts owing in respect of Senior Debt (matured and unmatured) shall have been paid in full; and from and after the happening of any event described in clause (b) of this paragraph, all payments and distributions of any kind or character (whether in cash, securities or property) which, except for the subordination provisions hereof, would have been payable or distributable to the obligee of such indebtedness (whether directly or by reason of this note’s being superior to any other indebtedness), shall be made to and for the benefit of the holders of Senior Debt (who shall be entitled to make all necessary claims therefor) in accordance with the priorities of payment thereof until all Senior Debt (matured and unmatured) shall have been paid in full. No act or failure to act on the part of any Borrower, and no default under or breach of any agreement of such Borrower, whether or not herein set forth, shall in any way prevent or limit the holder of any Senior Debt from enforcing fully the subordination terms herein provided for, irrespective of any knowledge or notice which such holder may at any time have or be charged with. In the event that any payment or distribution is made with respect to Subordinated Debt in violation of the terms of this Exhibit G or any outstanding Senior Debt, any holder of Subordinated Debt receiving such payment or distribution shall hold it in trust for the benefit of, and shall remit it to, the holders of Senior Debt then outstanding in accordance with the priorities of payment thereof.


Lender Name	Commitment
Bank of America, N.A.	$	64,578,508.57
The Bank of Nova Scotia	$	55,106,993.98
Deutsche Bank AG New York Branch	$	54,245,947.20
Morgan Stanley Bank, N.A.	$	45,635,479.39
KeyBank National Association	$	27,553,496.99
Regions Bank	$	27,553,496.99
Morgan Stanley Senior Funding, Inc.	$	21,526,169.52
The Royal Bank of Scotland plc	$	15,498,842.06
Comerica Bank	$	12,915,701.71


Lender Name	Commitment
JPMorgan Chase Bank, N.A.	$	77,924,733.66
Barclays Bank PLC	$	77,924,733.67
UBS Loan Finance LLC	$	67,161,648.91
Goldman Sachs Bank USA	$	65,439,555.35
The Bank of Tokyo-Mitsubishi UFJ, Ltd.	$	64,578,508.57
BNP Paribas	$	52,093,330.25
The Bank of New York Mellon	$	49,940,713.29
U.S. Bank National Association	$	44,774,432.61
Fifth Third Bank	$	34,441,871.24
The Nothern Trust Company	$	21,956,692.91
Commerce Bank, N.A.	$	17,220,935.62
National City Bank	$	17,220,935.62
UMB Bank	$	14,207,271.89
Aurora Bank FSB (fka Lehman Brothers Bank, FSB)	$	0.00


Lender Name	Commitment
Citicorp USA, Inc.	$	82,500,000
Wachovia Bank, National Association	$	73,000,000
HSBC Bank	$	65,000,000

TOTAL	$	1,150,000,000


Schedule 1	-	Subsidiaries

Schedule 2	-	Liens

Schedule 3	-	Restrictive Agreements

Schedule 4	-	Regulatory Authorizations

Schedule 5	-	Contingent Obligations

Schedule 6	-	Amendment Provisions

EXHIBITS
Exhibit A.1	-	Form of Borrowers’ Counsel’s Opinion

Exhibit A.2	-	Form of Borrowers’ Counsel’s Opinion for Illinois Corporations

Exhibit B	-	Form of Compliance Certificate

Exhibit C	-	Form of Assignment Agreement

Exhibit D	-	Form of Loan/Credit Related Money Transfer Instruction

Exhibit E	-	Form of Promissory Note

Exhibit F	-	Form of Designation Agreement

Exhibit G	-	Subordination Terms


Lender Name	Commitment
Bank of America, N.A.	$	64,578,508.57
The Bank of Nova Scotia	$	55,106,993.98
Deutsche Bank AG New York Branch	$	54,245,947.20
Morgan Stanley Bank, N.A.	$	45,635,479.39
KeyBank National Association	$	27,553,496.99
Regions Bank	$	27,553,496.99
Morgan Stanley Senior Funding, Inc.	$	21,526,169.52
The Royal Bank of Scotland plc	$	15,498,842.06
Comerica Bank	$	12,915,701.71


ARTICLE I		DEFINITIONS	1

1.1.	Certain Defined Terms		1
1.2.	Plural Forms		22

ARTICLE II		THE CREDITS	23

2.1.	Commitment		23
2.2.	Required Payments; Termination		23
2.3.	Loans		23
2.4.	Competitive Bid Procedure		23
2.5.	[omitted]		25
2.6.	Letters of Credit		25
2.7.	Types of Advances		30
2.8.	Facility Fee; Letter of Credit Fees; Reductions in Aggregate Commitment and Borrower Sublimits		30
2.9.	Minimum Amount of Each Advance		32
2.10.	Optional Principal Payments		32
2.11.	Method of Selecting Types and Interest Periods for New Revolving Advances		33
2.12.	Conversion and Continuation of Outstanding Revolving Advances; No Conversion or Continuation of Eurodollar Advances After Default		33
2.13.	Interest Rates, etc.		34
2.14.	Rates Applicable After Default		34
2.15.	Funding of Loans; Method of Payment		35
2.16.	Noteless Agreement; Evidence of Indebtedness		35
2.17.	Telephonic Notices		35
2.18.	Interest Payment Dates; Interest and Fee Basis		36
2.19.	Notification of Advances, Interest Rates, Prepayments and Commitment Reductions; Availability of Loans		36
2.20.	Lending Installations		37
2.21.	Non-Receipt of Funds by the Agent		37
2.22.	Replacement of Lender		37
2.23.	Extension of Commitment Termination Date and Borrowing Subsidiary Maturity Dates		38
2.24.	Defaulting Lenders		39
2.25.	Commitment Increases		41

ARTICLE III		YIELD PROTECTION; TAXES	42

3.1.	Yield Protection		42
3.2.	Changes in Capital Adequacy Regulations		43
3.3.	Availability of Types of Advances		44
3.4.	Funding Indemnification		44
3.5.	Taxes		44
3.6.	Lender Statements; Survival of Indemnity		47
3.7.	Alternative Lending Installation		47
3.8.	Allocation of Amounts Payable Among Borrowers		48



ARTICLE IV		CONDITIONS PRECEDENT	48

4.1.	Amendment Effective Date		48
4.2.	Each Credit Extension		50

ARTICLE V		REPRESENTATIONS AND WARRANTIES	50

5.1.	Existence and Standing		50
5.2.	Authorization and Validity		51
5.3.	No Conflict; Government Consent		51
5.4.	Financial Statements		51
5.5.	Material Adverse Change		52
5.6.	Taxes		52
5.7.	Litigation and Contingent Obligations		52
5.8.	Subsidiaries		52
5.9.	ERISA		52
5.10.	Accuracy of Information		52
5.11.	Regulation U		53
5.12.	Material Agreements		53
5.13.	Compliance With Laws		53
5.14.	Ownership of Properties		53
5.15.	Plan Assets; Prohibited Transactions		53
5.16.	Environmental Matters		54
5.17.	Investment Company Act		54
5.18.	Federal Energy Regulatory Commission		54
5.19.	Insurance		55
5.20.	No Default or Unmatured Default		55

ARTICLE VI		COVENANTS	55

6.1.	Financial Reporting		55
6.2.	Use of Proceeds and Letters of Credit		56
6.3.	Notice of Default		57
6.4.	Conduct of Business		57
6.5.	Taxes		57
6.6.	Insurance		57
6.7.	Compliance with Laws; Federal Energy Regulatory Commission Authorization		57
6.8.	Maintenance of Properties		58
6.9.	Inspection; Keeping of Books and Records		58
6.10.	Merger		58
6.11.	Dispositions of Assets		58
6.12.	Indebtedness of Project Finance Subsidiaries, Investments in Project Finance Subsidiaries or Non Material Subsidiaries and Other Investments; Acquisitions		61
6.13.	Liens		63
6.14.	Affiliates		66
6.15.	Financial Contracts		66


6.16.	Subsidiary Covenants		67
6.17.	Leverage Ratio		67

ARTICLE VII		DEFAULTS	68

ARTICLE VIII		ACCELERATION, WAIVERS, AMENDMENTS AND REMEDIES	71

8.1.	Acceleration		71
8.2.	Amendments		71
8.2A	Amendments after the Commitment Termination Date		72
8.3.	Preservation of Rights		72

ARTICLE IX		GENERAL PROVISIONS	73

9.1.	Survival of Representations		73
9.2.	Governmental Regulation		73
9.3.	Headings		73
9.4.	Entire Agreement		73
9.5.	Several Obligations; Benefits of this Agreement		73
9.6.	Expenses; Indemnification.		74
9.7.	Numbers of Documents		75
9.8.	Accounting		75
9.9.	Severability of Provisions		75
9.10.	Nonliability		76
9.11.	Confidentiality		76
9.12.	Lenders Not Utilizing Plan Assets		76
9.13.	Nonreliance		76
9.14.	Disclosure		77
9.15.	USA Patriot Act		77

ARTICLE X		THE AGENT	77

10.1.	Appointment; Nature of Relationship		77
10.2.	Powers		77
10.3.	General Immunity		78
10.4.	No Responsibility for Loans, Recitals, etc.		78
10.5.	Action on Instructions of Lenders		78
10.6.	Employment of Agents and Counsel		78
10.7.	Reliance on Documents; Counsel		79
10.8.	Agent’s Reimbursement and Indemnification		79
10.9.	Notice of Default		79
10.10.	Rights as a Lender		79
10.11.	Independent Credit Decision		80
10.12.	Successor Agent		80
10.13.	Agent and Arrangers Fees		81
10.14.	Delegation to Affiliates		81
10.15.	Syndication Agent and Documentation Agents		81



ARTICLE XI		SETOFF; RATABLE PAYMENTS	81

11.1.	Setoff		81
11.2.	Ratable Payments		81

ARTICLE XII		BENEFIT OF AGREEMENT; ASSIGNMENTS; PARTICIPATIONS	82

12.1.	Successors and Assigns; Designated Lenders		82
12.2.	Participations		84
12.3.	Assignments		85
12.4.	Dissemination of Information		87
12.5.	Tax Certifications		87
12.6.	Tranches		87

ARTICLE XIII		NOTICES	88

13.1.	Notices		88
13.2.	Change of Address		88

ARTICLE XIV		COUNTERPARTS	88

ARTICLE XV		CHOICE OF LAW; CONSENT TO JURISDICTION; WAIVER OF JURY TRIAL	89

15.1.	CHOICE OF LAW		89
15.2.	CONSENT TO JURISDICTION		89
15.3.	WAIVER OF JURY TRIAL		89

ARTICLE XVI		PROVISIONS RELATING TO THE SUPPLEMENTAL CREDIT AGREEMENT	89

16.1.	General		89
16.2.	After the Commitment Termination Date		91


Borrowing Subsidiary	FERC Limit
Union Electric	$	1,000,000,000
Genco	$	500,000,000


Issuing Bank	LC Commitment
JPMorgan Chase Bank, N.A.	$	287,500,000.00


Subsidiary	Jurisdiction of Organization	Owned By	Percent Ownership
1. Union Electric Company	Missouri	Ameren Corporation	100	%
a. Union Electric Capital Trust	Delaware	Union Electric Company	100	%
2. Ameren Services Company	Missouri	Ameren Corporation	100	%
3. Ameren Development Company	Missouri	Ameren Corporation	100	%
a. Gateway Energy Systems, L.C.	Missouri	Ameren Development Company	100	%
b. Missouri Central Railroad Company	Delaware	Ameren Development Company	89.1	%
c. CIPSCO Leasing Company	Illinois	Ameren Development Company	100	%
d. Gateway Energy WGK Project, L.L.C.	Illinois	Gateway Energy Systems, L.C.	100	%
4. Energy Risk Assurance Company	Vermont	Ameren Corporation	100	%
a. Missouri Energy Risk Assurance Company LLC	Missouri	Energy Risk Assurance Company	100	%
5. Ameren Illinois Transmission	Illinois	Ameren Corporation	100	%
6. Ameren Energy Resources Company, LLC	Delaware	Ameren Corporation	100	%
a. AmerenEnergy Medina Valley Cogen L.L.C.	Illinois	Ameren Energy Resources Company, LLC	100	%
b. Ameren Energy Fuels and Services Company	Illinois	Ameren Energy Resources Company, LLC	100	%
c. Illinois Materials Supply Co.	Illinois	Ameren Energy Resources Company, LLC	100	%


Company:
Consolidated Indebtedness of the Company:	$
Consolidated Total Capitalization of the Company:	$
Company’s Leverage Ratio (Ratio of 1 to 2):		to 1.00
Union Electric*:
Consolidated Indebtedness of Union Electric:	$
Consolidated Total Capitalization of Union Electric:	$
Union Electric’s Leverage Ratio (Ratio of 1 to 2):		to 1.00
Genco*:
Consolidated Indebtedness of Genco:	$
Consolidated Total Capitalization of Genco:	$
Genco’s Leverage Ratio (Ratio of 1 to 2):		to 1.00


1.	Assignor:

2.	Assignee:		[and is an [Affiliate]/[Approved
2.	Assignee:		[and is an [Affiliate]/[Approved

		Fund]² of [identify Lender]]



3.	Borrowers:	Ameren Corporation and its subsidiaries Union Electric Company and Ameren Energy Generating Company

4.	Agent:	JPMorgan Chase Bank, N.A., as Agent under the Credit Agreement.

5.	Credit Agreement:	The Amended and Restated Credit Agreement, dated as of June [ ], 2009, among the Borrowers, the Lenders party thereto, JPMorgan Chase Bank, N.A., as Agent and Barclays Bank PLC, as Syndication Agent.

6.	Assigned Interest:


Aggregate Amount of Commitment/Loans for all Lenders*	Amount of Commitment/Loans Assigned*	Percentage Assigned of Commitment/Loans³		Type of Assignment⁴
$	$		%
$	$		%
$	$		%


Facility Identification Number(s)

Customer/Account Name:		Ameren Corporation

Transfer Funds To:		Bank Name/Location: US Bank / Cincinnati, OH Account Name: Ameren Corporation General ABA Routing & Transit: 042000013 Account Number: 130103018037


Authorized Officer (Customer Representative):				Date:

Lee Nickloy
(Please Print)				Signature

Bank Officer Name:				Date:


(Please Print)				Signature


Facility Identification Number(s)

Customer/Account Name:		Ameren Energy Generating Company

Transfer Funds To:		Bank Name/Location: JP Morgan Chase Bank Account Name: Ameren Energy Generating General ABA Routing & Transit: 021000021 Account Number: 716492277


Date		Principal Amount of Loan		Maturity of Interest Period		Principal Amount Paid		Unpaid Balance