**Exhibit        99.1**

**One          Ameren Plaza**

**1901          Chouteau Avenue**

**St.          Louis, MO 63103**

***NEWS        RELEASE***

***Contacts:***

| **Analysts**                        | **Missouri                      Media** | **Illinois                      Media** | **Investors**                          |
|-------------------------------------|-----------------------------------------|-----------------------------------------|----------------------------------------|
| Bruce                      Steinke  | Tim                      Fox            | Shelley                      Epstein    | Investor                      Services |
| (314)                      554-2574 | (314)                      554-3120     | (309)                      677-5489     | (800)                      255-2237    |
| bsteinke@ameren.com                 | tfox@ameren.com                         | sepstein@ameren.com                     | invest@ameren.com                      |

**FOR          IMMEDIATE RELEASE**

**AMEREN          ANNOUNCES FIRST QUARTER 2007 EARNINGS**

***Reaffirms          2007 Earnings Guidance***

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***Regulation          G Statement***

*Ameren          has presented certain information in this release on a diluted cents per          share          basis. These diluted per share amounts reflect certain factors that directly          impact Ameren’s total earnings per share. 2007 and 2006 non-GAAP earnings per          share excludes the impact of severe storms and 2007 non-GAAP earnings per          share          guidance excludes *
*any          earnings impact that may result from commitments made to avoid rate rollback          and          generation tax legislation, or the enactment of such          legislation*
*.          Ameren believes this information is useful because it enables readers to          better          understand the impact of these factors on Ameren’s results of operations and          earnings per share. *

***Forward-looking          Statements***

*Statements          in this release not based 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 results will be 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. The following factors, in addition          to          those discussed elsewhere in this release and in our filings with the Securities          and Exchange Commission, could cause actual results to differ materially          from          management expectations as suggested by such forward-looking          statements:*

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| *·  * | *regulatory                  or legislative actions, including changes in regulatory policies                  and                  ratemaking determinations, such as in AmerenUE’s pending electric rate                  case and the outcome of AmerenCIPS, AmerenCILCO and AmerenIP rate                  rehearing proceedings, or the enactment of legislation freezing                  electric                  rates at 2006 levels or similar actions that impair the full and                  timely                  recovery of costs in Illinois;* |
|----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  contribution by the Ameren Illinois utilities, Ameren Energy Generating                  Company or Ameren Energy Resources Generating Company to an electric                  rate                  increase phase-in plan, customer credits or energy efficiency and                  assistance programs to avoid rate freeze, generation tax or similar                  legislation;* |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  impact of the termination of the joint dispatch                  agreement;* |
|----------------------|----------------------------------------------------------------------------------------------------|
| *·  * | *changes                  in laws and other governmental actions, including monetary and                  fiscal                  policies;* |
|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  effects of increased competition in the future due to, among other                  things,                  deregulation of certain aspects of our business at both the state                  and                  federal levels, and the implementation of deregulation, such as                  occurred                  when the electric rate freeze and power supply contracts expired                  in                  Illinois at the end of 2006;* |
|----------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  effects of participation in the Midwest Independent Transmission                  System                  Operator;* |
|----------------------|--------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  availability of fuel such as coal, natural gas, and enriched uranium                  used                  to produce electricity; the availability of purchased power and                  natural                  gas for distribution; and the level and volatility of future market                  prices                  for such commodities, including the ability to recover the costs                  for such                  commodities;* |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  effectiveness of our risk management strategies and the use of                  financial                  and derivative instruments;* |
|----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *prices                  for power in the Midwest;* |
|----------------------|-----------------------------------------------------|
| *·  * | *business                  and economic conditions, including their impact on interest rates;* |
|----------------------|------------------------------------------------------------------------------------------------|
| *·  * | *disruptions                  of the capital markets or other events that make access to necessary                  capital more difficult or costly;* |
|----------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  impact of the adoption of new accounting standards and the application                  of                  appropriate technical accounting rules and guidance;* |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *actions                  of credit rating agencies and the effects of such actions;* |
|----------------------|---------------------------------------------------------------------------------------|
| *·  * | *weather                  conditions and other natural phenomena;* |
|----------------------|--------------------------------------------------------------------|
| *·  * | *the                  impact of system outages caused by severe weather conditions or                  other                  events;* |
|----------------------|----------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *generation                  plant construction, installation and performance, including costs                  associated with AmerenUE’s Taum Sauk pumped-storage hydroelectric plant                  incident and the plant’s future operation;* |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *recoverability                  through insurance of costs associated with AmerenUE’s Taum Sauk                  pumped-storage hydroelectric plant                  incident;* |
|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *operation                  of AmerenUE’s nuclear power facility, including planned and unplanned                  outages, and decommissioning costs;* |
|----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  effects of strategic initiatives, including 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, will be introduced                  over time,                  which could have a negative financial effect;* |
|----------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *labor                  disputes, future wage and employee benefits costs, including changes                  in                  returns on benefit plan assets;* |
|----------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  inability of our counterparties and affiliates to meet their obligations                  with respect to contracts and financial instruments;* |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *the                  cost and availability of transmission capacity for the energy generated                  or                  required to satisfy energy sales;* |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| *·  * | *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 publicly update or revise          any          forward-looking statements to reflect new information, future events, or          otherwise.*

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| **AMEREN                  CORPORATION (AEE)**                                                                 |
|---------------------------------------------------------------------------------------------------------------|
| **CONSOLIDATED                  OPERATING STATISTICS**                                                        |
|                                                                                                          |   |   |   |   |   |   |
|                                                                                                          |   | **Three                  Months Ended** |
|                                                                                                               |   | **March                  31,**   |
|                                                                                                          |   | **2007** |   |   | 2006 |   |
|                                                                                                          |   |   |   |   |   |   |
| **Electric                  Sales - KWH (in millions):**                                                      |   |   |   |   |   |   |
| *Missouri                  Regulated*                                                                         |   |   |   |   |   |   |
| Residential                                                                                                   |   | **3,524** |   |   | 3,236 |   |
| Commercial                                                                                                    |   | **3,388** |   |   | 3,226 |   |
| Industrial                                                                                                    |   | **2,316** |   |   | 2,283 |   |
| Other                                                                                                         |   | **184** |   |   | 174 |   |
| Native                                                                                                        |   | **9,412** |   |   | 8,919 |   |
| Interchange                  sales                                                                            |   | **2,748** |   |   | 3,559 |   |
| Subtotal                                                                                                      |   | **12,160** |   |   | 12,478 |   |
|                                                                                                          |   |   |   |   |   |   |
| *Illinois                  Regulated*                                                                         |   |   |   |   |   |   |
| Residential                                                                                                   |   |   |   |   |   |   |
| Generation                  and delivery service                                                              |   | **2,802** |   |   | 2,894 |   |
| Commercial                                                                                                    |   |   |   |   |   |   |
| Generation                  and delivery service                                                              |   | **1,974** |   |   | 2,652 |   |
| Delivery                  service only                                                                        |   | **1,072** |   |   | 66 |   |
| Industrial                                                                                                    |   |   |   |   |   |   |
| Generation                  and delivery service                                                              |   | **842** |   |   | 2,295 |   |
| Delivery                  service only                                                                        |   | **2,604** |   |   | 914 |   |
| Other                                                                                                         |   | **148** |   |   | 157 |   |
| Subtotal                                                                                                      |   | **9,442** |   |   | 8,978 |   |
|                                                                                                          |   |   |   |   |   |   |
| *Non-rate-regulated                  Generation*                                                              |   |   |   |   |   |   |
| Non-affiliate                  sales                                                                          |   | **6,119** |   |   | 5,613 |   |
| Affiliate                  sales                                                                              |   | **1,826** |   |   | 5,080 |   |
| Subtotal                                                                                                      |   | **7,945** |   |   | 10,693 |   |
|                                                                                                          |   |   |   |   |   |   |
| Eliminate                  affiliate sales                                                                    |   | **(1,806** | **)** |   | (7,129 | ) |
| Eliminate                  Illinois Regulated/Non-rate-regulated Generation common                  customers |   | **(1,556** | **)** |   | (743 | ) |
|                                                                                                          |   |   |   |   |   |   |
| Ameren                  Total                                                                                 |   | **26,185** |   |   | 24,277 |   |
|                                                                                                          |   |   |   |   |   |   |
| **Electric                  Revenues (in millions):**                                                         |   |   |   |   |   |   |
| *Missouri                  Regulated*                                                                         |   |   |   |   |   |   |
| Residential                                                                                                   | **$** | **191** |   | $ | 181 |   |
| Commercial                                                                                                    |   | **157** |   |   | 151 |   |
| Industrial                                                                                                    |   | **79** |   |   | 76 |   |
| Other                                                                                                         |   | **24** |   |   | 20 |   |
| Native                                                                                                        |   | **451** |   |   | 428 |   |
| Non-affiliate                  interchange sales                                                              |   | **122** |   |   | 66 |   |
| Affiliate                  interchange sales                                                                  |   | **-** |   |   | 72 |   |
| Subtotal                                                                                                      |   | **573** |   |   | 566 |   |
|                                                                                                          |   |   |   |   |   |   |
| *Illinois                  Regulated*                                                                         |   |   |   |   |   |   |
| Residential                                                                                                   |   |   |   |   |   |   |
| Generation                  and delivery service                                                              |   | **289** |   |   | 189 |   |
| Commercial                                                                                                    |   |   |   |   |   |   |
| Generation                  and delivery service                                                              |   | **184** |   |   | 168 |   |
| Delivery                  service only                                                                        |   | **8** |   |   | 1 |   |
| Industrial                                                                                                    |   |   |   |   |   |   |
| Generation                  and delivery service                                                              |   | **51** |   |   | 97 |   |
| Delivery                  service only                                                                        |   | **2** |   |   | 1 |   |
| Other                                                                                                         |   | **48** |   |   | 28 |   |
| Subtotal                                                                                                      |   | **582** |   |   | 484 |   |
|                                                                                                          |   |   |   |   |   |   |
| *Non-rate-regulated                  Generation*                                                              |   |   |   |   |   |   |
| Non-affiliate                  energy sales                                                                   |   | **318** |   |   | 239 |   |
| Affiliate                  native energy sales                                                                |   | **124** |   |   | 160 |   |
| Affiliate                  other sales                                                                        |   | **9** |   |   | 31 |   |
| Subtotal                                                                                                      |   | **451** |   |   | 430 |   |
|                                                                                                          |   |   |   |   |   |   |
| Eliminate                  affiliate sales                                                                    |   | **(148** | **)** |   | (269 | ) |
| Ameren                  Total                                                                                 | **$** | **1,458** |   | $ | 1,211 |   |

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| **AMEREN                  CORPORATION (AEE)**                 |
|---------------------------------------------------------------|
| **CONSOLIDATED                  OPERATING STATISTICS**        |
|                                                          |   |   |   |   |   |   |
|                                                               |   | **Three                  Months Ended** |
|                                                               |   | **March                  31,**   |
|                                                          |   | **2007** |   |   | 2006 |   |
|                                                          |   |   |   |   |   |   |
| **Electric                  Generation - KWH (in millions):** |   |   |   |   |   |   |
| *Missouri                  Regulated*                         |   | **12.3** |   |   | 12.7 |   |
| *Non-rate-regulated*                                          |   |   |   |   |   |   |
| Genco                                                         |   | **4.2** |   |   | 3.6 |   |
| AERG                                                          |   | **1.5** |   |   | 1.7 |   |
| EEI                                                           |   | **2.0** |   |   | 2.0 |   |
| Subtotal                                                      |   | **7.7** |   |   | 7.3 |   |
| Ameren                  Total                                 |   | **20.0** |   |   | 20.0 |   |
|                                                          |   |   |   |   |   |   |
| **Fuel                  Cost per KWH (cents)**                |   |   |   |   |   |   |
| Missouri                  Regulated                           |   | **1.078** |   |   | 0.972 |   |
| Non-rate-regulated                                            |   | **1.713** |   |   | 1.511 |   |
|                                                          |   |   |   |   |   |   |
| **Gas                  Sales - Dth (in thousands)**           |   |   |   |   |   |   |
| Missouri                  Regulated                           |   | **5,729** |   |   | 4,873 |   |
| Illinois                  Regulated                           |   | **44,809** |   |   | 40,447 |   |
|                                                          |   |   |   |   |   |   |
| **Net                  Income by Segment (in millions):**     |   |   |   |   |   |   |
| Missouri                  Regulated                           | **$** | **23** |   | $ | 35 |   |
| Illinois                  Regulated                           |   | **29** |   |   | 9 |   |
| Non-rate-regulated                  Generation                |   | **70** |   |   | 27 |   |
| Other                                                         |   | **1** |   |   | (1 | ) |
| Ameren                  Total                                 | **$** | **123** |   | $ | 70 |   |
|                                                          |   |   |   |   |   |   |
|                                                               |   | **March                  31,**  |   |   | December                  31, |   |
|                                                          |   | **2007** |   |   | 2006 |   |
| **Common                  Stock:**                            |   |   |   |   |   |   |
| Shares                  outstanding (in millions)             |   | **207.0** |   |   | 206.6 |   |
| Book                  value per share                         | **$** | **31.68** |   | $ | 31.87 |   |
|                                                          |   |   |   |   |   |   |
| **Capitalization                  Ratios:**                   |   |   |   |   |   |   |
| Common                  equity                                |   | **50.0** | **%** |   | 50.6 | % |
| Preferred                  stock                              |   | **1.5** | **%** |   | 1.5 | % |
| Debt,                  net of cash                            |   | **48.5** | **%** |   | 47.9 | % |
|                                                          |   |   |   |   |   |   |
|                                                          |   |   |   |   |   |   |

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| **AMEREN                CORPORATION (AEE)**                                                                |
|------------------------------------------------------------------------------------------------------------|
| **CONSOLIDATED                STATEMENT OF INCOME**                                                        |
| (Unaudited,                in millions, except per share amounts)                                          |
|                                                                                                       |   |   |   |   |   |   |
|                                                                                                       |   |   |   |   |   |   |
|                                                                                                       |   |   |   |   |   |   |
|                                                                                                       |   | **Three                Months Ended**  |
|                                                                                                            |   | **March                31,**  |
|                                                                                                       |   | **2007** |   |   | 2006 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Operating                Revenues:**                                                                     |   |   |   |   |   |   |
| Electric                                                                                                   | **$** | **1,458** |   | $ | 1,211 |   |
| Gas                                                                                                        |   | **561** |   |   | 589 |   |
| **Total                operating revenues**                                                                |   | **2,019** |   |   | 1,800 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Operating                Expenses:**                                                                     |   |   |   |   |   |   |
| Fuel                                                                                                       |   | **263** |   |   | 252 |   |
| Purchased                power                                                                             |   | **373** |   |   | 273 |   |
| Gas                purchased for resale                                                                    |   | **421** |   |   | 453 |   |
| Other                operations and maintenance                                                            |   | **396** |   |   | 352 |   |
| Depreciation                and amortization                                                               |   | **176** |   |   | 161 |   |
| Taxes                other than income taxes                                                               |   | **102** |   |   | 113 |   |
| **Total                operating expenses**                                                                |   | **1,731** |   |   | 1,604 |   |
| **Operating                Income**                                                                        |   | **288** |   |   | 196 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Other                Income and Expenses:**                                                              |   |   |   |   |   |   |
| Miscellaneous                income                                                                        |   | **16** |   |   | 4 |   |
| **Total                other income**                                                                      |   | **16** |   |   | 4 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Interest                Charges**                                                                        |   | **100** |   |   | 76 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Income                Before Income Taxes, Minority Interest and Preferred Dividends                of** |   |   |   |   |   |   |
| **Subsidiaries**                                                                                           |   | **204** |   |   | 124 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Income                Taxes**                                                                            |   | **71** |   |   | 44 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Income                Before Minority Interest and Preferred Dividends of                Subsidiaries**  |   | **133** |   |   | 80 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Minority                Interest and Preferred Dividends of Subsidiaries**                               |   | **10** |   |   | 10 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Net                Income**                                                                              | **$** | **123** |   | $ | 70 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Earnings                per Common Share - Basic and Diluted**                                           | **$** | **0.59** |   | $ | 0.34 |   |
|                                                                                                       |   |   |   |   |   |   |
| **Average                Common Shares Outstanding**                                                       |   | **206.6** |   |   | 204.8 |   |
|                                                                                                       |   |   |   |   |   |   |
|                                                                                                       |   |   |   |   |   |   |

----

| **AMEREN                  CORPORATION (AEE)**                                                             |
|-----------------------------------------------------------------------------------------------------------|
| **CONSOLIDATED                  BALANCE SHEET**                                                           |
| (Unaudited,                  in millions)                                                                 |
|                                                                                                      |   |   |   |   |   |   |
|                                                                                                           |   | **March                  31,**  |   |   | December                  31, |   |
|                                                                                                      |   | **2007** |   |   | 2006 |   |
|                                                                                                      |   |   |   |   |   |   |
| **ASSETS**                                                                                                |   |   |   |   |   |   |
| **Current                  Assets:**                                                                      |   |   |   |   |   |   |
| Cash                  and cash equivalents                                                                | **$** | **161** |   | $ | 137 |   |
| Accounts                  receivable - trade                                                              |   | **687** |   |   | 418 |   |
| Unbilled                  revenue                                                                         |   | **216** |   |   | 309 |   |
| Miscellaneous                  accounts and notes receivable                                              |   | **177** |   |   | 160 |   |
| Materials                  and supplies, at average cost                                                  |   | **489** |   |   | 647 |   |
| Other                  current assets                                                                     |   | **130** |   |   | 203 |   |
| Total                  current assets                                                                     |   | **1,860** |   |   | 1,874 |   |
| **Property                  and Plant, Net**                                                              |   | **14,353** |   |   | 14,286 |   |
| **Investments                  and Other Assets:**                                                        |   |   |   |   |   |   |
| Investments                  in leveraged leases                                                          |   | **13** |   |   | 13 |   |
| Nuclear                  decommissioning trust fund                                                       |   | **288** |   |   | 285 |   |
| Goodwill                                                                                                  |   | **831** |   |   | 831 |   |
| Intangible                  Assets                                                                        |   | **210** |   |   | 217 |   |
| Other                  assets                                                                             |   | **650** |   |   | 641 |   |
| Regulatory                  assets                                                                        |   | **1,421** |   |   | 1,431 |   |
| Total                  investments and other assets                                                       |   | **3,413** |   |   | 3,418 |   |
|                                                                                                      |   |   |   |   |   |   |
| **TOTAL                  ASSETS**                                                                         | **$** | **19,626** |   | $ | 19,578 |   |
|                                                                                                      |   |   |   |   |   |   |
| **LIABILITIES                  AND STOCKHOLDERS' EQUITY**                                                 |   |   |   |   |   |   |
| **Current                  Liabilities:**                                                                 |   |   |   |   |   |   |
| Current                  maturities of long-term debt                                                     | **$** | **303** |   | $ | 456 |   |
| Short-term                  debt                                                                          |   | **953** |   |   | 612 |   |
| Accounts                  and wages payable                                                               |   | **454** |   |   | 671 |   |
| Taxes                  accrued                                                                            |   | **137** |   |   | 58 |   |
| Other                  current liabilities                                                                |   | **402** |   |   | 405 |   |
| Total                  current liabilities                                                                |   | **2,249** |   |   | 2,202 |   |
| **Long-term                  Debt, Net**                                                                  |   | **5,260** |   |   | 5,285 |   |
| **Preferred                  Stock of Subsidiary Subject to Mandatory                  Redemption**       |   | **18** |   |   | 18 |   |
| **Deferred                  Credits and Other Liabilities:**                                              |   |   |   |   |   |   |
| Accumulated                  deferred income taxes, net                                                   |   | **2,000** |   |   | 2,144 |   |
| Accumulated                  deferred investment tax credits                                              |   | **116** |   |   | 118 |   |
| Regulatory                  liabilities                                                                   |   | **1,185** |   |   | 1,234 |   |
| Asset                  retirement obligations                                                             |   | **557** |   |   | 549 |   |
| Accrued                  pension and other postretirement benefits                                        |   | **1,086** |   |   | 1,065 |   |
| Other                  deferred credits and liabilities                                                   |   | **385** |   |   | 169 |   |
| Total                  deferred credits and other liabilities                                             |   | **5,329** |   |   | 5,279 |   |
| **Preferred                  Stock of Subsidiaries Not Subject to Mandatory                  Redemption** |   | **195** |   |   | 195 |   |
| **Minority                  Interest in Consolidated Subsidiaries**                                       |   | **18** |   |   | 16 |   |
| **Stockholders'                  Equity:**                                                                |   |   |   |   |   |   |
| Common                  stock                                                                             |   | **2** |   |   | 2 |   |
| Other                  paid-in capital, principally premium on common stock                               |   | **4,521** |   |   | 4,495 |   |
| Retained                  earnings                                                                        |   | **2,011** |   |   | 2,024 |   |
| Accumulated                  other comprehensive loss                                                     |   | **23** |   |   | 62 |   |
| Total                  stockholders' equity                                                               |   | **6,557** |   |   | 6,583 |   |
|                                                                                                      |   |   |   |   |   |   |
| **TOTAL                  LIABILITIES AND STOCKHOLDERS' EQUITY**                                           | **$** | **19,626** |   | $ | 19,578 |   |
|                                                                                                      |   |   |   |   |   |   |

----

| **AMEREN                  CORPORATION (AEE)**                                                                       |
|---------------------------------------------------------------------------------------------------------------------|
| **CONSOLIDATED                  STATEMENT OF CASH FLOWS**                                                           |
| (Unaudited,                  in millions)                                                                           |
|                                                                                                                     |   | **Three                  Months Ended**  |
|                                                                                                                     |   | **March                  31,  ** |
|                                                                                                                |   | **2007** |   |   | 2006 |   |
| **Cash                  Flows From Operating Activities:**                                                          |   |   |   |   |   |   |
| Net                  income                                                                                         | **$** | **123** |   | $ | 70 |   |
| Adjustments                  to reconcile net income to net cash provided by operating                  activities: |   |   |   |   |   |   |
| Gains                  on sales of emission allowances                                                              |   | **(4** | **)** |   | (4 | ) |
| Depreciation                  and amortization                                                                      |   | **182** |   |   | 169 |   |
| Amortization                  of nuclear fuel                                                                       |   | **9** |   |   | 9 |   |
| Amortization                  of debt issuance costs and premium/discounts                                          |   | **5** |   |   | 4 |   |
| Deferred                  income taxes and investment tax credits, net                                              |   | **(12** | **)** |   | 8 |   |
| Minority                  interest                                                                                  |   | **7** |   |   | 7 |   |
| Other                                                                                                               |   | **6** |   |   | 7 |   |
| Changes                  in assets and liabilities:                                                                 |   |   |   |   |   |   |
| Receivables,                  net                                                                                   |   | **(193** | **)** |   | 104 |   |
| Materials                  and supplies                                                                             |   | **158** |   |   | 151 |   |
| Accounts                  and wages payable                                                                         |   | **(81** | **)** |   | (282 | ) |
| Taxes                  accrued                                                                                      |   | **77** |   |   | (1 | ) |
| Assets,                  other                                                                                      |   | **24** |   |   | 44 |   |
| Liabilities,                  other                                                                                 |   | **36** |   |   | 40 |   |
| Pension                  and other postretirement obligations, net                                                  |   | **21** |   |   | 47 |   |
| **Net                  cash provided by operating activities**                                                      |   | **358** |   |   | 373 |   |
|                                                                                                                |   |   |   |   |   |   |
| **Cash                  Flows From Investing Activities:**                                                          |   |   |   |   |   |   |
| Capital                  expenditures                                                                               |   | **(357** | **)** |   | (220 | ) |
| CT                  acquisitions                                                                                    |   | **-** |   |   | (292 | ) |
| Nuclear                  fuel expenditures                                                                          |   | **(23** | **)** |   | (24 | ) |
| Purchases                  of securities - Nuclear Decommissioning Trust Fund                                       |   | **(47** | **)** |   | (30 | ) |
| Sales                  of securities - Nuclear Decommissioning Trust Fund                                           |   | **43** |   |   | 27 |   |
| Purchases                  of emission allowances                                                                   |   | **(5** | **)** |   | (38 | ) |
| Sales                  of emission allowances                                                                       |   | **2** |   |   | 4 |   |
| Other                                                                                                               |   | **1** |   |   | - |   |
| **Net                  cash used in investing activities**                                                          |   | **(386** | **)** |   | (573 | ) |
|                                                                                                                |   |   |   |   |   |   |
| **Cash                  Flows From Financing Activities:**                                                          |   |   |   |   |   |   |
| Dividends                  on common stock                                                                          |   | **(131** | **)** |   | (130 | ) |
| Short-term                  debt, net                                                                               |   | **341** |   |   | 274 |   |
| Dividends                  paid to minority interest                                                                |   | **(5** | **)** |   | (7 | ) |
| Redemptions,                  repurchases and maturities of long-term debt                                          |   | **(174** | **)** |   | (31 | ) |
| Issuances                  of common stock                                                                          |   | **21** |   |   | 27 |   |
| **Net                  cash provided by financing activities**                                                      |   | **52** |   |   | 133 |   |
|                                                                                                                |   |   |   |   |   |   |
| **Net                  Change In Cash and Cash Equivalents**                                                        |   | **24** |   |   | (67 | ) |
| **Cash                  and Cash Equivalents at Beginning of Year**                                                 |   | **137** |   |   | 96 |   |
|                                                                                                                |   |   |   |   |   |   |
| **Cash                  and Cash Equivalents at End of Period**                                                     | **$** | **161** |   | $ | 29 |   |
|                                                                                                                |   |   |   |   |   |   |
|                                                                                                                |   |   |   |   |   |   |