UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported):

~~August~~September 210, 2010

Commission File Number			Exact Name of Registrant as Specified in Charter; State of Incorporation; Address and Telephone Number	IRS Employer Identification Number
CommissionFile Number	Exact Name of Registrant as Specified in Charter; State of Incorporation; Address and Telephone Number	IRS Employer Identification Number
1-14756	Ameren Corporation (Missouri Corporation) 1901 Chouteau Avenue St. Louis, Missouri 63103 (314) 621-3222	43-1723446	~~Ameren Corporation (Missouri Corporation) 1901 Chouteau Avenue St. Louis, Missouri 63103 (314) 621-3222~~	~~43-1723446~~
1-2967	Union Electric Company (Missouri Corporation) 1901 Chouteau Avenue St. Louis, Missouri 63103 (314) 621-3222	43-0559760	~~Union Electric Company (Missouri Corporation) 1901 Chouteau Avenue St. Louis, MO 63103 (314) 621-3222~~	~~43-0559760~~
1-3672	Central Illinois Public Service Company (Illinois Corporation) 607 East Adams Street Springfield, Illinois 62739 (888) 789-2477	37-0211380	~~Central Illinois Public Service Company (Illinois Corporation) 607 East Adams Street Springfield, Illinois 62739 (217) 523-3600~~	~~37-0211380~~
1-2732			Central Illinois Light Company (Illinois Corporation) 300 Liberty Street Peoria, Illinois 61602 (309) 677-5271	37-0211050
333-56594	Ameren Energy Generating Company (Illinois Corporation) 1901 Chouteau Avenue St. Louis, Missouri 63103 (314) 621-3222	37-1395586
1-3004			Illinois Power Company (Illinois Corporation) 370 South Main Street Decatur, Illinois 62523 (217) 424-6600	37-0344645
1-2732	Central Illinois Light Company (Illinois Corporation) 300 Liberty Street Peoria, Illinois 61602 (309) 677-5271	37-0211050

~~Check the appropriate box below if the Form 8~~1-K3004 ~~filing~~Illinois isPower ~~intended~~Company to(Illinois ~~simultaneously~~Corporation) ~~satisfy~~370 ~~the~~South ~~filing~~Main ~~obligation~~Street ofDecatur, ~~the~~Illinois ~~registrant~~62523 ~~under~~(217) ~~any~~424-6600 ~~of the following provisions:~~ 37-0344645

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrants under any of the following provisions:

¨	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 81.01 ~~Other~~Entry ~~Events~~into a Material Definitive Agreement.

~~On August 2, 2010,~~ Ameren Corporation (“Ameren”) ~~announced~~and ~~the~~certain ~~formation~~ of ~~Ameren~~its ~~Transmission~~subsidiaries ~~Company~~have ~~(“ATX”),~~entered ainto ~~new~~definitive ~~direct~~multi-year ~~subsidiary~~credit ~~dedicated~~facility ~~to electric transmission infrastructure investment. ATX intends to build~~agreements ~~projects~~with ~~initially~~a ~~within~~large ~~Illinois~~ and ~~Missouri,~~diverse ~~with~~group ~~the~~of ~~potential~~lenders, ~~for~~providing ~~expanding~~substantial toliquidity. ~~other~~These ~~areas~~facilities incumulatively ~~the~~provide ~~future~~$2.1 ~~Ameren~~billion ~~Services Company, on behalf~~ of ~~ATX~~credit ~~and~~through ~~Ameren’s utility subsidiaries Central Illinois Light Company (“CILCO”)~~September 10, ~~Central~~ ~~Illinois Public Service Company (“CIPS”)~~2013, ~~Illinois~~which ~~Power~~date ~~Company~~is ~~(“IP”)~~inclusive ~~and~~of ~~Union~~extension ~~Electric~~periods ~~Company~~provided ~~(“UE”),~~for ~~will~~in ~~file a petition with~~ the ~~Federal~~agreements, ~~Energy Regulatory Commission (“FERC”) today requesting~~as ~~approval~~discussed ofbelow. ~~certain~~The ~~rate~~facilities ~~treatments~~currently ~~with~~include ~~respect~~25 tointernational, ~~ATX’s~~national, ~~proposed~~and ~~initial~~regional ~~portfolio~~lenders, ofwith ~~transmission~~no ~~projects,~~lender ~~which~~providing ~~consists~~more ofthan a$125 ~~collection~~million of ~~high~~credit ~~voltage transmission projects~~ in ~~Missouri and Illinois representing a combined investment opportunity of over $1~~aggregate.3 ~~billion. In particular, the FERC petition requested approval of the following rate mechanisms for the initial portfolio of projects:~~

•On ~~Full~~September 10, ~~recovery~~2010, ofAmeren, ~~financing~~Union ~~costs~~Electric ~~associated~~Company, ~~with~~doing ~~construction~~business ~~work~~as inAmerenUE ~~progress~~(“UE”), JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto entered into an $800 million multi-year, senior unsecured revolving credit facility (the “2010 Missouri Credit Agreement”). On September 10, 2010, Ameren, Ameren Energy Generating Company (“Genco”), JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto entered into a $500 million multi-year, senior unsecured revolving credit facility (the “2010 Genco Credit Agreement”). Together, the 2010 Missouri Credit Agreement and the 2010 Genco Credit Agreement replace the Amended and Restated Credit Agreement dated as of ~~prudently~~June 30, ~~incurred~~2009 ~~costs~~(the in“2009 ~~developing~~Multi-Year ~~facilities~~Credit ~~that~~Agreement”), ~~might~~under ~~later~~which beAmeren, ~~abandoned~~UE ~~due~~and toGenco ~~issues~~were ~~outside~~borrowers and which agreement was terminated contemporaneously with the ~~company’s~~effectiveness ~~control;~~of the 2010 Missouri Credit Agreement and the 2010 Genco Credit Agreement.

•Also ~~Use~~on ofSeptember 10, a2010, ~~hypothetical~~Ameren, ~~capital~~Central ~~structure~~Illinois ~~reflecting~~Public ~~the~~Service ~~capital~~Company, ~~structure~~doing ofbusiness ~~Ameren’s~~as AmerenCIPS (“CIPS”), Central Illinois ~~utilities~~Light Company, doing business as AmerenCILCO (“CILCO”) and Illinois Power Company, doing business as AmerenIP (“IP”, and, together with CIPS and IPCILCO, the “Ameren Illinois Utilities”), JPMorgan Chase Bank, N.A., as ofagent, ~~December~~and 31the lenders party thereto entered into an $800 million multi-year, ~~2009~~senior unsecured credit agreement (the “2010 Illinois Credit Agreement” and, ~~which~~together ~~would~~with ~~afford~~the ~~ATX~~2010 aMissouri ~~capital~~Credit ~~structure~~Agreement ~~that~~and ~~resembles~~the ~~that~~2010 Genco Credit Agreement, the “2010 Credit Agreements”). The 2010 Illinois Credit Agreement replaces the existing $800 million senior secured credit facility dated as of aJune 30, ~~utility~~2009 ~~company;~~(the ~~and~~“2009 Illinois Credit Agreement”), which agreement was terminated contemporaneously with the effectiveness of the 2010 Illinois Credit Agreement.

•JPMorgan ~~Permission~~Chase Securities ~~for~~LLC, ~~ATX~~Barclays toCapital, ~~recover~~Banc ~~operating~~of America Securities LLC, and ~~maintenance~~The ~~costs~~Bank ~~incurred~~of inTokyo-Mitsubishi ~~the~~UFJ, ~~early~~Ltd. ~~development~~served ~~stages~~as joint arrangers and joint bookrunners for each of the ~~projects~~2010 Credit Agreements.

The ~~FERC~~obligations of each borrower under the respective 2010 Credit Agreement to which it is ~~expected~~a party will be several and not joint, and, except under limited circumstances relating to ~~rule~~expenses onand ~~this~~indemnities, ~~request~~the ~~within~~obligations 60of ~~days.~~UE, WeGenco, ~~cannot~~and ~~predict~~the ~~whether~~Ameren Illinois Utilities under the ~~FERC~~respective ~~will~~2010 ~~grant~~Credit ~~some~~Agreements are not guaranteed by Ameren or ~~all~~any other subsidiary of Ameren. The maximum aggregate amount available to each borrower under each facility is as follows (such amount being such borrower’s “Borrowing Sublimit”): (i) under the ~~requested~~2010 Missouri Credit Agreement: Ameren—$500 million; UE—$500 ~~rate~~million, ~~mechanisms~~(ii) under the 2010 Genco Credit Agreement: Ameren—$500 million; Genco—$500 million, and (iii) under the 2010 Illinois Credit Agreement: Ameren—$300 million; CIPS—$225 million; CILCO—$175 million; IP—$400 million. Upon the completion of the previously-announced merger of CILCO and IP with and into CIPS, which is expected to occur on October 1, 2010 (the “Merger”), the Borrowing Sublimit under the 2010 Illinois Credit Agreement of the surviving corporation, which will be renamed Ameren Illinois Company (“Ameren Illinois”), will be $800 million.

~~ATX~~Ameren ~~expects~~has the option to ~~operate~~seek asadditional acommitments ~~transmission-owning~~from ~~member~~existing ofor new lenders to increase the ~~Midwest~~total ~~Independent~~facility ~~Transmission~~size ~~System~~of the 2010 Credit ~~Operator,~~Agreements ~~Inc~~up to the following maximum amounts: 2010 Missouri Credit Agreement – $1.,0 abillion; ~~regional~~2010 ~~transmission~~Genco ~~organization~~Credit ~~serving~~Agreement 13– U$625 million; 2010 Illinois Credit Agreement – $1.S0 billion. ~~states~~Each ~~and~~of the ~~Canadian~~2010 ~~province~~Credit ofAgreements ~~Manitoba~~will mature and expire with respect to Ameren on September 10, ~~including~~2013. The 2010 Genco Credit Agreement will mature and expire with respect to Genco on September 10, 2013. The Borrowing Sublimit of UE under the ~~service~~2010 ~~territories~~Missouri Credit Agreement and the Borrowing Sublimits of CIPS, CILCO, IP, and ~~UE.~~Ameren ~~CIPS~~Illinois under the 2010 Illinois Credit Agreement will mature and expire on September 9, ~~CILCO~~2011, IPsubject to extension thereof on a 364-day basis, as requested by the borrower and UEapproved ~~expect~~by tothe lenders, ~~construct~~or for a longer period upon receipt of any and ~~own~~all ~~certain~~required ~~new~~federal ~~assets~~or state regulatory approvals, as permitted under the 2010 Missouri Credit Agreement and ~~facilities~~ the 2010 Illinois Credit Agreement, ~~including~~but ~~those~~in ~~necessary~~no event later than September 10, 2013. UE and Ameren Illinois intend to ~~connect~~seek regulatory approval to extend the maturity dates of their ~~existing~~respective ~~assets~~Borrowing Sublimits under the 2010 Missouri Credit Agreement and ~~facilities~~2010 Illinois Credit Agreement to ~~new~~September 10, ~~transmission~~2013. ~~projects~~If ~~developed~~and bywhen such ~~ATX~~regulatory approvals are received, no lender approval will be required to affect the extensions. The principal amount

A copy of a press release regarding the formation of ATX is filed herewith as Exhibit 99.1 and is incorporated by reference herein.

ITEM 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number		Title
99.1		Press release regarding formation of Ameren Transmission Company, dated August 2, 2010.

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~~Forward-looking~~ of ~~Statements~~each revolving loan owed by a borrower under any 2010 Credit Agreement to which it is a party will be due and payable no later than the final maturity relating to such borrower under such 2010 Credit Agreement.

~~Statements~~The inobligations ~~this~~of ~~report~~all ~~not~~borrowers ~~based~~under on historical facts are considered “forward-looking” and, accordingly, involve risks and uncertainties that could cause actual results to differ materially from those discussed. Although such forward-looking statements have been made in good faith and are based on reasonable assumptions, there is no assurance that the ~~expected~~2010 ~~results will~~Credit beAgreements achieved. These statements include (without limitation) statements as to future expectations, beliefs, plans, strategies, objectives, events, conditions, and financial performance. In connection with the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, we are ~~providing this cautionary statement to identify important factors that could cause actual results to differ materially from those anticipated~~unsecured. The following factors, in addition to those discussed elsewhere in this report and in our filings with the Securities and Exchange Commission, could cause actual results to differ materially from management expectations suggested in such forward-looking statements:

•Loans ~~regulatory~~are available on a revolving basis under each of the 2010 Credit Agreements and may be repaid and, subject to satisfaction of the conditions to borrowing (as set forth below), reborrowed from time to time. At the election of each borrower, the interest rates on such loans will be the alternate base rate (“ABR”) plus the margin applicable to the particular borrower and/or ~~legislative~~the ~~actions~~Eurodollar rate plus the margin applicable to the particular borrower. The applicable margins will be determined by reference to, ~~including~~in ~~changes~~the case of any borrower, such borrower’s long-term unsecured credit ratings or, if no such ratings are then in ~~regulatory~~effect, ~~policies;~~such borrower’s corporate/issuers ratings then in effect. ABR is a fluctuating interest rate equal to the highest of JPMorgan Chase Bank, N.A.’s prime rate, the sum of the federal funds effective rate plus 1/2 percent per annum and the one-month Eurodollar rate plus 1 percent per annum. The Eurodollar interest rate is the applicable British Bankers’ Association London interbank offered rate for deposits in U.S. dollars. A competitive bid rate is also available under the 2010 Credit Agreements if requested by a borrower. Letters of credit in an aggregate undrawn face amount not to exceed 25% of the applicable aggregate commitment under the respective 2010 Credit Agreements are also available for issuance for the account of the borrowers thereunder (but within the applicable overall combined facility borrowing limitations of the 2010 Credit Agreements).

•The ~~changes~~2010 Credit Agreements contain conditions to borrowings and issuances of letters of credit similar to those contained in ~~laws~~the 2009 Multi-Year Credit Agreement and ~~other~~the ~~governmental~~2009 ~~actions~~Illinois Credit Agreement, including ~~monetary~~the absence of default or unmatured default, material accuracy of representations and ~~fiscal~~warranties ~~policies;~~(excluding any representation after the closing date as to the absence of material adverse change and material litigation) and required regulatory authorizations. In addition, solely as it relates to borrowings under the 2010 Illinois Credit Agreement, it is a condition precedent to any such borrowing that, at the time of and after giving effect to such borrowing, the borrower will not be in violation of any limitation on its ability to incur unsecured indebtedness contained in its articles of incorporation. The 2010 Credit Agreements also contain non-financial covenants similar to those contained in the 2009 Multi-Year Credit Agreement and the 2009 Illinois Credit Agreement, including restrictions on the ability to incur liens, to transact with affiliates, to dispose of assets, to make investments in or transfer assets to its affiliates, and to merge with other entities. The 2010 Illinois Credit Agreement, however, expressly permits the consummation of the Merger, provided that (i) no default or unmatured default then exists or would arise as a result thereof, and (ii) all regulatory approvals required to be obtained in connection with the Merger have been obtained and are in full force and effect.

•The ~~the~~2010 ~~effects~~Credit ofAgreements ~~increased~~require ~~competition~~each inof ~~the~~Ameren, ~~future~~UE, ~~due~~Genco, toCIPS, ~~among~~CILCO, ~~other~~IP ~~things,~~and ~~deregulation~~Ameren Illinois to maintain consolidated indebtedness of ~~certain~~not ~~aspects~~more than 65% of ~~our~~its ~~business~~consolidated attotal ~~both~~capitalization ~~the~~pursuant ~~state~~to ~~and~~a ~~federal~~defined ~~levels~~calculation set forth in the agreements. In addition, under the 2010 Genco Credit Agreement and the ~~implementation~~2010 Illinois Credit Agreement, Ameren is required to maintain a ratio of ~~deregulation~~consolidated funds from operations plus interest expense to consolidated interest expense of 2.0 to 1, ~~such~~to asbe ~~occurred~~calculated ~~when~~quarterly as of the ~~electric~~end ~~rate~~of ~~freeze~~the ~~and~~most ~~power~~recent ~~supply~~four ~~contracts~~fiscal ~~expired~~quarters then ending in ~~Illinois~~accordance atwith the ~~end~~2010 Genco Credit Agreement and the 2010 Illinois Credit Agreement, as applicable. Failure of ~~2006;~~a borrower to satisfy a financial covenant constitutes an immediate default under the applicable 2010 Credit Agreement.

•The ~~increasing~~2010 ~~capital~~Credit ~~expenditure~~Agreements contain default provisions that are similar to those contained in the 2009 Multi-Year Credit Agreement and ~~operating~~the 2009 ~~expense~~Illinois ~~requirements~~Credit Agreement, as applicable. However, UE and Genco are no longer borrowers within the same credit agreement, as they were under the 2009 Multi-Year Credit Agreement, and a default by one such subsidiary borrower will not trigger a default by the other under the applicable 2010 Credit Agreements. Defaults under the 2010 Credit Agreements apply separately to each borrower; provided, however, that a default by UE, Genco, CIPS, CILCO, IP or Ameren Illinois under any 2010 Credit Agreement will also constitute a default by Ameren under such agreement. Defaults include a cross default with respect to a borrower under the applicable 2010 Credit Agreement to the occurrence of a default by such borrower under any other agreement covering outstanding indebtedness of such borrower and certain subsidiaries (other than project finance subsidiaries and non-material subsidiaries) in excess of $25 million in the aggregate. Any default of Ameren under any 2010 Credit Agreement that exists solely as a result of a default by UE, Genco, CIPS, CILCO, IP or Ameren Illinois thereunder will not constitute a default under any other 2010 Credit Agreement while Ameren is otherwise in

• the effects of participation in the Midwest Independent Transmission System Operator, Inc.;

• the effectiveness of our risk management strategies and the use of financial and derivative instruments;

• prices for power in the Midwest, including forward prices;

• business and economic conditions, including their impact on interest rates, bad debt expense, and demand for our products;

• disruptions of the capital markets or other events that make the Ameren companies’ access to necessary capital, including short-term credit and liquidity, impossible, more difficult or more costly;

• our assessment of our liquidity;

• the impact of the adoption of new accounting guidance and the application of appropriate technical accounting rules and guidance;

• actions of credit rating agencies and the effects of such actions;

• the impact of weather conditions and other natural phenomena on us and our customers;

• generation, transmission, and distribution asset construction, installation and performance;

• impairments of long-lived assets or goodwill;

• the effects of strategic initiatives, including mergers, acquisitions and divestitures;

• the impact of current environmental regulations on utilities and power generating companies and the expectation that more stringent requirements, including those related to greenhouse gases and energy efficiency, will be enacted over time, which could limit or terminate the operation of certain of our generating units, increase our costs, result in an impairment of our assets, reduce our customers’ demand for electricity or otherwise have a negative financial effect;

• labor disputes, workforce reductions, future wage and employee benefits costs, including changes in discount rates and returns on benefit plan assets;

• the inability of our counterparties and affiliates to meet their obligations with respect to contracts, credit facilities and financial instruments;

• the cost and availability of transmission capacity for the energy generated by the Ameren companies’ facilities or required to satisfy energy sales made by the Ameren companies;

• legal and administrative proceedings; and

• acts of sabotage, war, terrorism or intentionally disruptive acts.

Given these uncertainties, undue reliance should not be placed on these forward-looking statements. Except to the extent required by the federal securities laws, we undertake no obligation to update or revise publicly any forward-looking statements to reflect new information or future events.

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~~This~~ compliance ~~combined~~with ~~Form~~all ~~8-K~~of isits ~~being~~obligations ~~filed~~under ~~separately~~such byother ~~Ameren,~~2010 ~~UE,~~Credit ~~CIPS~~Agreement. Further, ~~CILCO~~a ~~and~~default IPat ~~(each~~the aAmeren ~~“registrant”).~~level ~~Information~~under ~~contained herein~~any ~~relating~~2010 toCredit ~~any~~Agreement ~~individual~~does ~~registrant~~not ~~has~~trigger ~~been~~a ~~filed~~default by ~~such~~UE, ~~registrant~~Genco, CIPS, onCILCO, ~~its~~IP, ~~own~~or ~~behalf.~~Ameren NoIllinois ~~registrant~~under ~~makes~~such ~~any representation as to information relating to any other registrant~~agreement.

The borrowers will use the proceeds of any borrowings under the 2010 Credit Agreements for general corporate purposes, including working capital, commercial paper liquidity support and other funding needs, to repay amounts owed under the 2009 Multi-Year Credit Agreement and the 2009 Illinois Credit Agreement, as applicable, to fund loans under the Ameren money pool arrangements or other short-term intercompany loan arrangements, and to pay fees and expenses incurred in connection with the 2010 Credit Agreements.

Copies of the 2010 Missouri Credit Agreement, the 2010 Genco Credit Agreement and the 2010 Illinois Credit Agreement are attached hereto as Exhibits 10.1, 10.2 and 10.3, respectively, and are incorporated by reference herein.

ITEM 1.02

Termination of a Material Definitive Agreement.

As a condition to the effectiveness of the 2010 Credit Agreements, effective September 10, 2010, the 2009 Multi-Year Credit Agreement and the 2009 Illinois Credit Agreement were terminated in respect of all parties, including UE, Genco, CIPS, CILCO, and IP. In accordance with the terms of the 2009 Illinois Credit Agreement, the mortgage bonds that were issued by CIPS, CILCO, and IP to secure their respective obligations under the 2009 Illinois Credit Facility have been released and cancelled.

The registrants’ Annual Report on Form 10-K for the year ended December 31, 2009, includes in the Exhibit Index a reference to each of the above referenced documents and indicates the form and date of the original filing under the Securities Exchange Act of 1934, as amended.

ITEM 2.03

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

See Item 1.01 above for a description of the 2010 Credit Agreements.

ITEM 9.01

Financial Statements and Exhibits.

(d)

Exhibits


Exhibit Number:		Title:

10.1		Credit Agreement, dated as of September 10, 2010, by and among Ameren, UE and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto.

10.2		Credit Agreement, dated as of September 10, 2010, by and among Ameren, Genco and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto.

10.3		Credit Agreement, dated as of September 10, 2010, by and among Ameren, CIPS, CILCO and IP and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto.

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This combined Form 8-K is being filed separately by Ameren Corporation, Union Electric Company, Central Illinois Public Service Company, Ameren Energy Generating Company, Central Illinois Light Company and Illinois Power Company (each a “registrant”). Information contained herein relating to any individual registrant has been filed by such registrant on its own behalf. No registrant makes any representation as to information relating to any other registrant.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company or its subsidiaries.

AMEREN CORPORATION (Registrant) /s/ Martin J. Lyons, Jr. Martin J. Lyons, Jr. Senior Vice President and Chief Financial Officer UNION ELECTRIC COMPANY (Registrant) /s/ Martin J. Lyons, Jr. Martin J. Lyons, Jr. Senior Vice President and Chief Financial Officer CENTRAL ILLINOIS PUBLIC SERVICE COMPANY (Registrant) /s/ Martin J. Lyons, Jr. Martin J. Lyons, Jr. Senior Vice President and Chief Financial Officer AMEREN ENERGY GENERATING COMPANY (Registrant) /s/ Martin J. Lyons, Jr. Martin J. Lyons, Jr. Senior Vice President and Chief Financial Officer CENTRAL ILLINOIS LIGHT COMPANY (Registrant) /s/ Martin J. Lyons, Jr. Martin J. Lyons, Jr. Senior Vice President and Chief Financial Officer ILLINOIS POWER COMPANY (Registrant) /s/ Martin J. Lyons, Jr. Martin J. Lyons, Jr. Senior Vice President and Chief Financial Officer

Date: ~~August~~September 213, 2010

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Exhibit Index

Exhibit Number		Title
99.1		Press release regarding formation of Ameren Transmission Company, dated August 2, 2010.

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Exhibit Index


Exhibit Number:		Title:

10.1		Credit Agreement, dated as of September 10, 2010, by and among Ameren, UE and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto.

10.2		Credit Agreement, dated as of September 10, 2010, by and among Ameren, Genco and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto.

10.3		Credit Agreement, dated as of September 10, 2010, by and among Ameren, CIPS, CILCO and IP and JPMorgan Chase Bank, N.A., as agent, and the lenders party thereto.

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