|  CommissionFile      Number | Exact      name of registrant as specified in its charter;State      of Incorporation;Address and Telephone      Number |  IRS      EmployerIdentification      No. |
|----------------------------------|-------------------------------------------------------------------------------------------------------------------------|------------------------------------------------|
|                             |                                                                                                                    |                                           |
| 1-14756                          | Ameren      Corporation                                                                                                 | 43-1723446                                     |
|                             | (Missouri      Corporation)                                                                                             |                                           |
|                             | 1901      Chouteau Avenue                                                                                               |                                           |
|                             | St.      Louis, Missouri 63103                                                                                          |                                           |
|                             | (314)      621-3222                                                                                                     |                                           |
|                             |                                                                                                                    |                                           |
| 1-2967                           | Union      Electric Company                                                                                             | 43-0559760                                     |
|                             | (Missouri      Corporation)                                                                                             |                                           |
|                             | 1901      Chouteau Avenue                                                                                               |                                           |
|                             | St.      Louis, Missouri 63103                                                                                          |                                           |
|                             | (314)      621-3222                                                                                                     |                                           |
|                             |                                                                                                                    |                                           |
| 1-3672                           | Central      Illinois Public Service Company                                                                            | 37-0211380                                     |
|                             | (Illinois      Corporation)                                                                                             |                                           |
|                             | 607      East Adams Street                                                                                              |                                           |
|                             | Springfield,      Illinois 62739                                                                                        |                                           |
|                             | (888)      789-2477                                                                                                     |                                           |
|                             |                                                                                                                    |                                           |
| 333-56594                        | Ameren      Energy Generating Company                                                                                   | 37-1395586                                     |
|                             | (Illinois      Corporation)                                                                                             |                                           |
|                             | 1901      Chouteau Avenue                                                                                               |                                           |
|                             | St.      Louis, Missouri 63103                                                                                          |                                           |
|                             | (314)      621-3222                                                                                                     |                                           |
|                             |                                                                                                                    |                                           |
| 2-95569                          | CILCORP      Inc.                                                                                                       | 37-1169387                                     |
|                             | (Illinois      Corporation)                                                                                             |                                           |
|                             | 300      Liberty Street                                                                                                 |                                           |
|                             | Peoria,      Illinois 61602                                                                                             |                                           |
|                             | (309)      677-5271                                                                                                     |                                           |
|                             |                                                                                                                    |                                           |
| 1-2732                           | Central      Illinois Light Company                                                                                     | 37-0211050                                     |
|                             | (Illinois      Corporation)                                                                                             |                                           |
|                             | 300      Liberty Street                                                                                                 |                                           |
|                             | Peoria,      Illinois 61602                                                                                             |                                           |
|                             | (309)      677-5271                                                                                                     |                                           |
|                             |                                                                                                                    |                                           |
| 1-3004                           | Illinois      Power Company                                                                                             | 37-0344645                                     |
|                             | (Illinois      Corporation)                                                                                             |                                           |
|                             | 370      South Main Street                                                                                              |                                           |
|                             | Decatur,      Illinois 62523                                                                                            |                                           |
|                             | (217)      424-6600                                                                                                     |                                           |

----

|                                         | Large      Accelerated      Filer | AcceleratedFiler     | Non-Accelerated      Filer | Smaller      ReportingCompany |
|----------------------------------------------|-----------------------------------|----------------------|----------------------------|-------------------------------|
| Ameren      Corporation                      | (X)                               | (        ) | (        )       | (        )          |
| Union      Electric Company                  | (        )              | (        ) | (X)                        | (        )          |
| Central      Illinois Public Service Company | (        )              | (   ) | (X)                        | (        )          |
| Ameren      Energy Generating Company        | (        )              | (        ) | (X)                        | (        )          |
| CILCORP      Inc.                            | (        )              | (        ) | (X)                        | (        )          |
| Central      Illinois Light Company          | (        )              | (        ) | (X)                        | (        )          |
| Illinois      Power Company                  | (        )              | (        ) | (X)                        | (        )          |

| Ameren      Corporation                      | Yes | (        ) | No | (X) |
|----------------------------------------------|-----|----------------------|----|-----|
| Union      Electric Company                  | Yes | (        ) | No | (X) |
| Central      Illinois Public Service Company | Yes | (        ) | No | (X) |
| Ameren      Energy Generating Company        | Yes | (        ) | No | (X) |
| CILCORP      Inc.                            | Yes | (        ) | No | (X) |
| Central      Illinois Light Company          | Yes | (        ) | No | (X) |
| Illinois      Power Company                  | Yes | (        ) | No | (X) |

| Ameren      Corporation                      | Common      stock, $.01 par value per share – 210,208,319                                                                                                                 |
|----------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                         |                                                                                                                                                                            |
| Union      Electric Company                  | Common      stock, $5 par value per share, held by AmerenCorporation      (parent company of the registrant) – 102,123,834                                                |
|                                         |                                                                                                                                                                            |
| Central      Illinois Public Service Company | Common      stock, no par value, held by AmerenCorporation      (parent company of the registrant) – 25,452,373                                                           |
|                                         |                                                                                                                                                                            |
| Ameren      Energy Generating Company        | Common      stock, no par value, held by Ameren EnergyResources      Company, LLC (parent company of theregistrant      and subsidiary of AmerenCorporation)      – 2,000 |
|                                         |                                                                                                                                                                            |
| CILCORP      Inc.                            | Common      stock, no par value, held by AmerenCorporation      (parent company of the registrant) – 1,000                                                                |
|                                         |                                                                                                                                                                            |
| Central      Illinois Light Company          | Common      stock, no par value, held by CILCORP Inc.(parent      company of the registrant and subsidiary ofAmeren      Corporation) – 13,563,871                        |
|                                         |                                                                                                                                                                            |
| Illinois      Power Company                  | Common      stock, no par value, held by AmerenCorporation      (parent company of the registrant) – 23,000,000                                                      |

----

----

----

|                                                                                                                                                                                                                                                                                                       | Page   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|
| GLOSSARY      OF TERMS AND      ABBREVIATIONS.....................................................................................................................................................................................................                                                         | 5      |
|                                                                                                                                                                                                                                                                                                       |   |
| Forward-looking      Statements..........................................................................................................................................................................................................................................                                  | 7      |
|                                                                                                                                                                                                                                                                                                       |   |
| PART      I   Financial Information                                                                                                                                                                                                                                                         |   |
|                                                                                                                                                                                                                                                                                                       |   |
| Item      1.     Financial Statements      (Unaudited)                                                                                                                                                                                                                            |   |
| Ameren      Corporation                                                                                                                                                                                                                                                                                    |   |
| Consolidated      Statement of      Income...............................................................................................................................................................................................................                                                  | 8      |
| Consolidated      Balance      Sheet..........................................................................................................................................................................................................................                                             | 9      |
| Consolidated      Statement of Cash      Flows.......................................................................................................................................................................................................                                                      | 10     |
| Union      Electric Company                                                                                                                                                                                                                                                                                |   |
| Consolidated      Statement of      Income...............................................................................................................................................................................................................                                                  | 11     |
| Consolidated      Balance      Sheet..........................................................................................................................................................................................................................                                             | 12     |
| Consolidated      Statement of Cash      Flows.......................................................................................................................................................................................................                                                      | 13     |
| Central      Illinois Public Service Company                                                                                                                                                                                                                                                               |   |
| Statement      of      Income.......................................................................................................................................................................................................................................                                       | 14     |
| Balance      Sheet..................................................................................................................................................................................................................................................                                       | 15     |
| Statement      of Cash      Flows................................................................................................................................................................................................................................                                          | 16     |
| Ameren      Energy Generating Company                                                                                                                                                                                                                                                                      |   |
| Consolidated      Statement of      Income...............................................................................................................................................................................................................                                                  | 17     |
| Consolidated      Balance      Sheet..........................................................................................................................................................................................................................                                             | 18     |
| Consolidated      Statement of Cash      Flows.......................................................................................................................................................................................................                                                      | 19     |
| CILCORP      Inc.                                                                                                                                                                                                                                                                                          |   |
| Consolidated      Statement of      Income...............................................................................................................................................................................................................                                                  | 20     |
| Consolidated      Balance      Sheet..........................................................................................................................................................................................................................                                             | 21     |
| Consolidated      Statement of Cash      Flows.......................................................................................................................................................................................................                                                      | 22     |
| Central      Illinois Light Company                                                                                                                                                                                                                                                                        |   |
| Consolidated      Statement of      Income..............................................................................................................................................................................................................                                                   | 23     |
| Consolidated      Balance      Sheet.........................................................................................................................................................................................................................                                              | 24     |
| Consolidated      Statement of Cash      Flows.......................................................................................................................................................................................................                                                      | 25     |
| Illinois      Power Company                                                                                                                                                                                                                                                                                |   |
| Consolidated      Statement of      Income..............................................................................................................................................................................................................                                                   | 26     |
| Consolidated      Balance      Sheet..........................................................................................................................................................................................................................                                             | 27     |
| Consolidated      Statement of Cash      Flows.......................................................................................................................................................................................................                                                      | 28     |
|                                                                                                                                                                                                                                                                                                       |   |
| Combined      Notes to Financial      Statements....................................................................................................................................................................................................                                                       | 29     |
|                                                                                                                                                                                                                                                                                                       |   |
| Item      2.    Management’s Discussion and Analysis of Financial      Condition and Results of      Operations............................................................................................................                                                           | 60     |
| Item      3.    Quantitative and Qualitative Disclosures About Market      Risk.................................................................................................................................................................                                            | 85     |
| Item      4 and                                                                                                                                                                                                                                                                                            |   |
| Item      4T.  Controls and      Procedures...............................................................................................................................................................................................................................                            | 90     |
|                                                                                                                                                                                                                                                                                                       |   |
| PART      II Other Information                                                                                                                                                                                                                                                                        |   |
|                                                                                                                                                                                                                                                                                                       |   |
| Item      1.    Legal      Proceedings...........................................................................................................................................................................................................................................           | 90     |
| Item      1A. Risk      Factors......................................................................................................................................................................................................................................................                      | 91     |
| Item      2.    Unregistered Sales of Equity Securities and Use of      Proceeds.................................................................................................................................................................                                           | 91     |
| Item      4.    Submission of Matters to a Vote of Security      Holders...............................................................................................................................................................................                                     | 91     |
| Item      6.         Exhibits.............................................................................................................................................................................................................................................................. | 93     |
|                                                                                                                                                                                                                                                                                                       |   |
| Signatures.........................................................................................................................................................................................................................................................................                        | 96     |

----

----

----

----

| ·   | regulatory      or legislative actions, including changes in regulatory policies and      ratemaking determinations, such as the outcome of pending UE, CIPS, CILCO      and IP rate proceedings or future legislative actions that seek to limit      or reverse rate increases; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | uncertainty      as to the effect of implementation of the Illinois electric settlement      agreement on Ameren, the Ameren Illinois Utilities, Genco and AERG,      including implementation of a new power procurement process in Illinois      that began in 2008; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | changes      in laws and other governmental actions, including monetary and fiscal      policies; |
|--------------------|---------------------------------------------------------------------------------------------------|

| ·   | changes      in laws or regulations that adversely affect the ability of electric      distribution companies and other purchasers of wholesale electricity to      pay their suppliers, including UE and Marketing  Company; |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | enactment      of legislation taxing electric generators, in Illinois or      elsewhere; |
|--------------------|------------------------------------------------------------------------------------------|

| ·   | 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 theMISO; |
|--------------------|-----------------------------------------------|

| ·   | the      cost and availability of fuel such as coal, natural gas, and enriched      uranium used to produce electricity; the cost and 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, including forward  prices; |
|--------------------|------------------------------------------------------------------|

| ·   | business      and economic conditions, including their impact on interest      rates; |
|--------------------|---------------------------------------------------------------------------------------|

| ·   | disruptions      of the capital markets or other events that make the Ameren Companies’      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 naturalphenomena; |
|--------------------|-----------------------------------------------------|

| ·   | the      impact of system outages caused by severe weather conditions or other      events; |
|--------------------|---------------------------------------------------------------------------------------------|

| ·   | generation      plant construction, installation and performance, including costs      associated with UE’s Taum Sauk pumped-storage hydroelectric plant incident      and the plant’s future operation; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | recoverability      through insurance of costs associated with UE’s Taum Sauk pumped-storage      hydroelectric plant incident; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------|

| ·   | operation      of UE’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 financialeffect; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | labor      disputes, 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 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. |
|--------------------|----------------------------------------------------------------------------|

----

| AMEREN      CORPORATION                                        |                                 |
|----------------------------------------------------------------|--------------------------------------|
| CONSOLIDATED      STATEMENT OF INCOME                          |                                 |
| (Unaudited)      (In millions, except per share amounts)       |                                 |
|                                                           |                                 |   |   |   |   |   |   |   |   |   |   |
|                                                           | Three      Months EndedJune      30, |   |   | Six      Months EndedJune      30, |   |
|                                                           | 2008                                 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Operating      Revenues:                                       |                                 |   |   |   |   |   |   |   |   |   |   |
| Electric                                                       | $                                    | 1,545 |   |   | $ | 1,519 |   |   | $ | 3,012 |   |   | $ | 2,982 |   |
| Gas                                                            |                                 | 243 |   |   |   | 209 |   |   |   | 855 |   |   |   | 770 |   |
| Total      operating revenues                                  |                                 | 1,788 |   |   |   | 1,728 |   |   |   | 3,867 |   |   |   | 3,752 |   |
|                                                           |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Operating      Expenses:                                       |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel                                                           |                                 | 200 |   |   |   | 263 |   |   |   | 502 |   |   |   | 526 |   |
| Coal      contract settlement                                  |                                 | (60 | ) |   |   | - |   |   |   | (60 | ) |   |   | - |   |
| Purchased      power                                           |                                 | 306 |   |   |   | 314 |   |   |   | 593 |   |   |   | 687 |   |
| Gas      purchased for resale                                  |                                 | 165 |   |   |   | 133 |   |   |   | 624 |   |   |   | 554 |   |
| Other      operations and maintenance                          |                                 | 469 |   |   |   | 420 |   |   |   | 891 |   |   |   | 809 |   |
| Depreciation      and amortization                             |                                 | 178 |   |   |   | 176 |   |   |   | 354 |   |   |   | 359 |   |
| Taxes      other than income taxes                             |                                 | 89 |   |   |   | 96 |   |   |   | 202 |   |   |   | 198 |   |
| Total      operating expenses                                  |                                 | 1,347 |   |   |   | 1,402 |   |   |   | 3,106 |   |   |   | 3,133 |   |
| Operating      Income                                          |                                 | 441 |   |   |   | 326 |   |   |   | 761 |   |   |   | 619 |   |
| Other      Income and Expenses:                                |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income                                      |                                 | 21 |   |   |   | 20 |   |   |   | 42 |   |   |   | 34 |   |
| Miscellaneous      expense                                     |                                 | (8 | ) |   |   | (8 | ) |   |   | (13 | ) |   |   | (13 | ) |
| Total      other income                                        |                                 | 13 |   |   |   | 12 |   |   |   | 29 |   |   |   | 21 |   |
| Interest      Charges                                          |                                 | 118 |   |   |   | 108 |   |   |   | 218 |   |   |   | 206 |   |
| Income      Before Income Taxes, Minority Interest             |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| and      Preferred Dividends of Subsidiaries                   |                                 | 336 |   |   |   | 230 |   |   |   | 572 |   |   |   | 434 |   |
| Income      Taxes                                              |                                 | 119 |   |   |   | 78 |   |   |   | 206 |   |   |   | 149 |   |
| Income      Before Minority Interest and Preferred             |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Dividends      of Subsidiaries                                 |                                 | 217 |   |   |   | 152 |   |   |   | 366 |   |   |   | 285 |   |
| Minority      Interest and Preferred Dividends of Subsidiaries |                                 | 11 |   |   |   | 9 |   |   |   | 22 |   |   |   | 19 |   |
| Net      Income                                                | $                                    | 206 |   |   | $ | 143 |   |   | $ | 344 |   |   | $ | 266 |   |
|                                                           |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Earnings      per Common Share – Basic and Diluted       | $                                    | 0.98 |   |   | $ | 0.69 |   |   | $ | 1.64 |   |   | $ | 1.29 |   |
| Dividends      per Common Share                                | $                                    | 0.635 |   |   | $ | 0.635 |   |   | $ | 1.270 |   |   | $ | 1.270 |   |
| Average      Common Shares Outstanding                         |                                 | 209.5 |   |   |   | 207.1 |   |   |   | 209.1 |   |   |   | 206.9 |   |
|                                                           |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| AMEREN      CORPORATION                                                  |          |
|--------------------------------------------------------------------------|---------------|
| CONSOLIDATED      BALANCE SHEET                                          |
| (Unaudited)      (In millions, except per share amounts)                 |          |
|                                                                     |          |   |   |   |   |
|                                                                     | June      30, |   |   | December      31, |   |
|                                                                     | 2008          |   |   | 2007 |   |
| ASSETS                                                                   |          |   |   |   |   |
| Current      Assets:                                                     |          |   |   |   |   |
| Cash      and cash equivalents                                           | $             | 205 |   |   | $ | 355 |   |
| Accounts      receivable – trade (less allowance for doubtful      |          |   |   |   |   |   |   |
| accounts      of $26 and $22, respectively)                              |          | 529 |   |   |   | 570 |   |
| Unbilled      revenue                                                    |          | 389 |   |   |   | 359 |   |
| Miscellaneous      accounts and notes receivable                         |          | 376 |   |   |   | 280 |   |
| Materials      and supplies                                              |          | 719 |   |   |   | 735 |   |
| Mark-to-market      derivative assets                                    |          | 273 |   |   |   | 35 |   |
| Other      current assets                                                |          | 275 |   |   |   | 146 |   |
| Total      current assets                                                |          | 2,766 |   |   |   | 2,480 |   |
| Property      and Plant, Net                                             |          | 15,566 |   |   |   | 15,069 |   |
| Investments      and Other Assets:                                       |          |   |   |   |   |   |   |
| Nuclear      decommissioning trust fund                                  |          | 284 |   |   |   | 307 |   |
| Goodwill                                                                 |          | 831 |   |   |   | 831 |   |
| Intangible      assets                                                   |          | 177 |   |   |   | 198 |   |
| Regulatory      assets                                                   |          | 1,081 |   |   |   | 1,158 |   |
| Other      assets                                                        |          | 940 |   |   |   | 685 |   |
| Total      investments and other assets                                  |          | 3,313 |   |   |   | 3,179 |   |
| TOTAL      ASSETS                                                        | $             | 21,645 |   |   | $ | 20,728 |   |
|                                                                     |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDERS' EQUITY                                |          |   |   |   |   |   |   |
| Current      Liabilities:                                                |          |   |   |   |   |   |   |
| Current      maturities of long-term debt                                | $             | 285 |   |   | $ | 221 |   |
| Short-term      debt                                                     |          | 1,450 |   |   |   | 1,472 |   |
| Accounts      and wages payable                                          |          | 527 |   |   |   | 687 |   |
| Taxes      accrued                                                       |          | 111 |   |   |   | 84 |   |
| Mark-to-market      derivative liabilities                               |          | 236 |   |   |   | 24 |   |
| Other      current liabilities                                           |          | 469 |   |   |   | 414 |   |
| Total      current liabilities                                           |          | 3,078 |   |   |   | 2,902 |   |
| Long-term      Debt, Net                                                 |          | 6,146 |   |   |   | 5,691 |   |
| Preferred      Stock of Subsidiary Subject to Mandatory Redemption       |          | 16 |   |   |   | 16 |   |
| Deferred      Credits and Other Liabilities:                             |          |   |   |   |   |   |   |
| Accumulated      deferred income taxes, net                              |          | 2,104 |   |   |   | 2,046 |   |
| Accumulated      deferred investment tax credits                         |          | 104 |   |   |   | 109 |   |
| Regulatory      liabilities                                              |          | 1,437 |   |   |   | 1,240 |   |
| Asset      retirement obligations                                        |          | 576 |   |   |   | 562 |   |
| Accrued      pension and other postretirement benefits                   |          | 758 |   |   |   | 839 |   |
| Other      deferred credits and liabilities                              |          | 390 |   |   |   | 354 |   |
| Total      deferred credits and other liabilities                        |          | 5,369 |   |   |   | 5,150 |   |
| Preferred      Stock of Subsidiaries Not Subject to Mandatory Redemption |          | 195 |   |   |   | 195 |   |
| Minority      Interest in Consolidated Subsidiaries                      |          | 24 |   |   |   | 22 |   |
| Commitments      and Contingencies (Notes 2, 8, 9 and 10)                |          |   |   |   |   |   |   |
| Stockholders'      Equity:                                               |          |   |   |   |   |   |   |
| Common      stock, $.01 par value, 400.0 shares authorized –       |          |   |   |   |   |   |   |
| shares      outstanding of 210.1 and 208.3, respectively                 |          | 2 |   |   |   | 2 |   |
| Other      paid-in capital, principally premium on common stock          |          | 4,693 |   |   |   | 4,604 |   |
| Retained      earnings                                                   |          | 2,188 |   |   |   | 2,110 |   |
| Accumulated      other comprehensive income (loss)                       |          | (66 | ) |   |   | 36 |   |
| Total      stockholders’ equity                                    |          | 6,817 |   |   |   | 6,752 |   |
| TOTAL      LIABILITIES AND STOCKHOLDERS' EQUITY                          | $             | 21,645 |   |   | $ | 20,728 |   |

----

| AMEREN      CORPORATION                                                 |
|-------------------------------------------------------------------------|
| CONSOLIDATED      STATEMENT OF CASH FLOWS                               |
| (Unaudited)      (In millions)                                          |
|                                                                    |   |   |   |   |   |
|                                                                    | Six      Months Ended |   |
|                                                                    | June      30, |   |
|                                                                    | 2008 |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                              |   |   |   |   |   |
| Net      income                                                         | $ | 344 |   |   | $ | 266 |   |
| Adjustments      to reconcile net income to net cash                    |   |   |   |   |   |   |   |
| provided      by operating activities:                                  |   |   |   |   |   |   |   |
| Gain      on sales of emission allowances                               |   | (2 | ) |   |   | (2 | ) |
| Mark-to-market      gain on derivatives                                 |   | (94 | ) |   |   | (1 | ) |
| Coal      contract settlement                                           |   | (60 | ) |   |   | - |   |
| Depreciation      and amortization                                      |   | 364 |   |   |   | 357 |   |
| Amortization      of nuclear fuel                                       |   | 20 |   |   |   | 15 |   |
| Amortization      of debt issuance costs and premium/discounts          |   | 8 |   |   |   | 10 |   |
| Deferred      income taxes and investment tax credits, net              |   | 107 |   |   |   | (8 | ) |
| Minority      interest                                                  |   | 16 |   |   |   | 13 |   |
| Other                                                                   |   | 4 |   |   |   | 7 |   |
| Changes      in assets and liabilities:                                 |   |   |   |   |   |   |   |
| Receivables                                                             |   | 15 |   |   |   | (131 | ) |
| Materials      and supplies                                             |   | 16 |   |   |   | 35 |   |
| Accounts      and wages payable                                         |   | (64 | ) |   |   | (62 | ) |
| Taxes      accrued, net                                                 |   | (58 | ) |   |   | 59 |   |
| Assets,      other                                                      |   | 32 |   |   |   | 29 |   |
| Liabilities,      other                                                 |   | 65 |   |   |   | 19 |   |
| Pension      and other postretirement benefit obligations               |   | 15 |   |   |   | 50 |   |
| Counterparty      collateral asset                                      |   | (205 | ) |   |   | (97 | ) |
| Counterparty      collateral liability                                  |   | 79 |   |   |   | - |   |
| Taum      Sauk insurance receivable, net                                |   | (107 | ) |   |   | (16 | ) |
| Net      cash provided by operating activities                          |   | 495 |   |   |   | 543 |   |
| Cash      Flows From Investing Activities:                              |   |   |   |   |   |   |   |
| Capital      expenditures                                               |   | (798 | ) |   |   | (715 | ) |
| Nuclear      fuel expenditures                                          |   | (123 | ) |   |   | (24 | ) |
| Purchases      of securities – nuclear decommissioning trust fund |   | (247 | ) |   |   | (75 | ) |
| Sales      of securities – nuclear decommissioning trust fund     |   | 231 |   |   |   | 65 |   |
| Purchases      of emission allowances                                   |   | (2 | ) |   |   | (9 | ) |
| Sales      of emission allowances                                       |   | 2 |   |   |   | 3 |   |
| Other                                                                   |   | 2 |   |   |   | 1 |   |
| Net      cash used in investing activities                              |   | (935 | ) |   |   | (754 | ) |
| Cash      Flows From Financing Activities:                              |   |   |   |   |   |   |   |
| Dividends      on common stock                                          |   | (266 | ) |   |   | (263 | ) |
| Capital      issuance costs                                             |   | (9 | ) |   |   | (3 | ) |
| Short-term      debt, net                                               |   | (22 | ) |   |   | 1,007 |   |
| Dividends      paid to minority interest holder                         |   | (15 | ) |   |   | (10 | ) |
| Redemptions,      repurchases, and maturities of long-term debt         |   | (808 | ) |   |   | (443 | ) |
| Issuances:                                                              |   |   |   |   |   |   |   |
| Common      stock                                                       |   | 75 |   |   |   | 48 |   |
| Long-term      debt                                                     |   | 1,335 |   |   |   | 425 |   |
| Net      cash provided by financing activities                          |   | 290 |   |   |   | 761 |   |
| Net      change in cash and cash equivalents                            |   | (150 | ) |   |   | 550 |   |
| Cash      and cash equivalents at beginning of year                     |   | 355 |   |   |   | 137 |   |
| Cash      and cash equivalents at end of period                         | $ | 205 |   |   | $ | 687 |   |
|                                                                    |   |   |   |   |   |   |   |

----

| UNION      ELECTRIC COMPANY                                   |                                 |
|---------------------------------------------------------------|--------------------------------------|
| CONSOLIDATED      STATEMENT OF INCOME                         |                                 |
| (Unaudited)      (In millions)                                |                                 |
|                                                          |                                 |   |   |   |   |   |   |   |   |   |   |
|                                                          |                                 |   |   |   |   |   |   |   |   |   |   |
|                                                          | Three      Months EndedJune      30, |   |   | Six      Months EndedJune      30, |   |
|                                                          | 2008                                 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Operating      Revenues:                                      |                                 |   |   |   |   |   |   |   |   |   |   |
| Electric      - excluding off-system                          | $                                    | 589 |   |   | $ | 579 |   |   | $ | 1,079 |   |   | $ | 1,030 |   |
| Electric      - off-system                                    |                                 | 147 |   |   |   | 89 |   |   |   | 298 |   |   |   | 211 |   |
| Gas                                                           |                                 | 35 |   |   |   | 29 |   |   |   | 118 |   |   |   | 105 |   |
| Other                                                         |                                 | - |   |   |   | - |   |   |   | - |   |   |   | 1 |   |
| Total      operating revenues                                 |                                 | 771 |   |   |   | 697 |   |   |   | 1,495 |   |   |   | 1,347 |   |
| Operating      Expenses:                                      |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel                                                          |                                 | 104 |   |   |   | 143 |   |   |   | 251 |   |   |   | 268 |   |
| Purchased      power                                          |                                 | 37 |   |   |   | 29 |   |   |   | 90 |   |   |   | 69 |   |
| Gas      purchased for resale                                 |                                 | 18 |   |   |   | 15 |   |   |   | 73 |   |   |   | 64 |   |
| Other      operations and maintenance                         |                                 | 238 |   |   |   | 222 |   |   |   | 455 |   |   |   | 446 |   |
| Depreciation      and amortization                            |                                 | 82 |   |   |   | 84 |   |   |   | 163 |   |   |   | 171 |   |
|     Taxes      other than income taxes    |                                 | 60 |   |   |   | 60 |   |   |   | 120 |   |   |   | 117 |   |
| Total      operating expenses                                 |                                 | 539 |   |   |   | 553 |   |   |   | 1,152 |   |   |   | 1,135 |   |
| Operating      Income                                         |                                 | 232 |   |   |   | 144 |   |   |   | 343 |   |   |   | 212 |   |
| Other      Income and Expenses:                               |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income                                     |                                 | 15 |   |   |   | 12 |   |   |   | 29 |   |   |   | 20 |   |
| Miscellaneous      expense                                    |                                 | (2 | ) |   |   | (6 | ) |   |   | (4 | ) |   |   | (8 | ) |
| Total      other income                                       |                                 | 13 |   |   |   | 6 |   |   |   | 25 |   |   |   | 12 |   |
| Interest      Charges                                         |                                 | 50 |   |   |   | 51 |   |   |   | 91 |   |   |   | 97 |   |
| Income      Before Income Taxes and Equity                    |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|    in      Income of Unconsolidated Investment |                                 | 195 |   |   |   | 99 |   |   |   | 277 |   |   |   | 127 |   |
| Income      Taxes                                             |                                 | 71 |   |   |   | 30 |   |   |   | 100 |   |   |   | 39 |   |
| Income      Before Equity in Income                           |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|    of      Unconsolidated Investment           |                                 | 124 |   |   |   | 69 |   |   |   | 177 |   |   |   | 88 |   |
| Equity      in Income of Unconsolidated Investment,           |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net      of Taxes                                             |                                 | - |   |   |   | 12 |   |   |   | 11 |   |   |   | 26 |   |
| Net      Income                                               |                                 | 124 |   |   |   | 81 |   |   |   | 188 |   |   |   | 114 |   |
| Preferred      Stock Dividends                                |                                 | 2 |   |   |   | 2 |   |   |   | 3 |   |   |   | 3 |   |
| Net      Income Available to Common Stockholder               | $                                    | 122 |   |   | $ | 79 |   |   | $ | 185 |   |   | $ | 111 |   |

----

| UNION      ELECTRIC COMPANY                                                                    |          |
|------------------------------------------------------------------------------------------------|---------------|
|  CONSOLIDATED      BALANCE SHEET                                                          |          |
| (Unaudited)      (In millions, except per share amounts)                                       |          |
|                                                                                           |          |   |   |   |   |
|                                                                                           | June      30, |   |   | December      31, |   |
|                                                                                           | 2008          |   |   | 2007 |   |
| ASSETS                                                                                         |          |   |   |   |   |
| Current      Assets:                                                                           |          |   |   |   |   |
| Cash      and cash equivalents                                                                 | $             | - |   |   | $ | 185 |   |
| Accounts      receivable – trade (less allowance for doubtful                            |          |   |   |   |   |   |   |
| accounts      of $7 and $6, respectively)                                                      |          | 176 |   |   |   | 191 |   |
| Unbilled      revenue                                                                          |          | 165 |   |   |   | 118 |   |
| Miscellaneous      accounts and notes receivable                                               |          | 268 |   |   |   | 213 |   |
| Advances      to money pool                                                                    |          | - |   |   |   | 15 |   |
| Accounts      receivable – affiliates                                                    |          | 28 |   |   |   | 90 |   |
| Materials      and supplies                                                                    |          | 318 |   |   |   | 301 |   |
| Mark-to-market      derivative assets                                                          |          | 106 |   |   |   | 7 |   |
| Other      current assets                                                                      |          | 75 |   |   |   | 43 |   |
| Total      current assets                                                                      |          | 1,136 |   |   |   | 1,163 |   |
| Property      and Plant, Net                                                                   |          | 8,477 |   |   |   | 8,189 |   |
| Investments      and Other Assets:                                                             |          |   |   |   |   |   |   |
| Nuclear      decommissioning trust fund                                                        |          | 284 |   |   |   | 307 |   |
| Intercompany      note receivable – affiliate                                            |          | 30 |   |   |   | - |   |
| Intangible      assets                                                                         |          | 52 |   |   |   | 56 |   |
| Regulatory      assets                                                                         |          | 677 |   |   |   | 697 |   |
| Other      assets                                                                              |          | 393 |   |   |   | 491 |   |
| Total      investments and other assets                                                        |          | 1,436 |   |   |   | 1,551 |   |
| TOTAL      ASSETS                                                                              | $             | 11,049 |   |   | $ | 10,903 |   |
|                                                                                           |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDERS' EQUITY                                                      |          |   |   |   |   |   |   |
| Current      Liabilities:                                                                      |          |   |   |   |   |   |   |
| Current      maturities of long-term debt                                                      | $             | 4 |   |   | $ | 152 |   |
| Short-term      debt                                                                           |          | 33 |   |   |   | 82 |   |
| Intercompany      note payable – Ameren                                                  |          | 50 |   |   |   | - |   |
| Accounts      and wages payable                                                                |          | 143 |   |   |   | 315 |   |
| Accounts      payable – affiliates                                                       |          | 85 |   |   |   | 212 |   |
| Taxes      accrued                                                                             |          | 78 |   |   |   | 78 |   |
| Accrued      interest                                                                          |          | 56 |   |   |   | 47 |   |
| Taum      Sauk pumped-storage hydroelectric facility liability                                 |          | 35 |   |   |   | 103 |   |
| Mark-to-market      derivative liabilities                                                     |          | 101 |   |   |   | 1 |   |
| Other      current liabilities                                                                 |          | 58 |   |   |   | 58 |   |
| Total      current liabilities                                                                 |          | 643 |   |   |   | 1,048 |   |
| Long-term      Debt, Net                                                                       |          | 3,677 |   |   |   | 3,208 |   |
| Deferred      Credits and Other Liabilities:                                                   |          |   |   |   |   |   |   |
| Accumulated      deferred income taxes, net                                                    |          | 1,347 |   |   |   | 1,273 |   |
| Accumulated      deferred investment tax credits                                               |          | 82 |   |   |   | 85 |   |
| Regulatory      liabilities                                                                    |          | 907 |   |   |   | 865 |   |
| Asset      retirement obligations                                                              |          | 489 |   |   |   | 476 |   |
| Accrued      pension and other postretirement benefits                                         |          | 237 |   |   |   | 297 |   |
| Other      deferred credits and liabilities                                                    |          | 45 |   |   |   | 50 |   |
| Total      deferred credits and other liabilities                                              |          | 3,107 |   |   |   | 3,046 |   |
| Commitments      and Contingencies (Notes 2, 8, 9 and 10)                                      |          |   |   |   |   |   |   |
| Stockholders'      Equity:                                                                     |          |   |   |   |   |   |   |
| Common      stock, $5 par value, 150.0 shares authorized – 102.1 shares      outstanding |          | 511 |   |   |   | 511 |   |
| Preferred      stock not subject to mandatory redemption                                       |          | 113 |   |   |   | 113 |   |
| Other      paid-in capital, principally premium on common stock                                |          | 1,119 |   |   |   | 1,119 |   |
| Retained      earnings                                                                         |          | 1,894 |   |   |   | 1,855 |   |
| Accumulated      other comprehensive income (loss)                                             |          | (15 | ) |   |   | 3 |   |
| Total      stockholders' equity                                                                |          | 3,622 |   |   |   | 3,601 |   |
| TOTAL      LIABILITIES AND STOCKHOLDERS' EQUITY                                                | $             | 11,049 |   |   | $ | 10,903 |   |

----

| UNION      ELECTRIC COMPANY                                             |                  |
|-------------------------------------------------------------------------|-----------------------|
| CONSOLIDATED      STATEMENT OF CASH FLOWS                               |                  |
| (Unaudited)      (In millions)                                          |                  |
|                                                                    |                  |   |   |   |   |
|                                                                    | Six      Months Ended |   |
|                                                                    | June      30,         |   |
|                                                                    | 2008                  |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                              |                  |   |   |   |   |
| Net      income                                                         | $                     | 188 |   |   | $ | 114 |   |
| Adjustments      to reconcile net income to net cash                    |                  |   |   |   |   |   |   |
| provided      by operating activities:                                  |                  |   |   |   |   |   |   |
| Gain      on sales of emission allowances                               |                  | (1 | ) |   |   | - |   |
| Mark-to-market      gain on derivatives                                 |                  | (73 | ) |   |   | - |   |
| Depreciation      and amortization                                      |                  | 163 |   |   |   | 171 |   |
| Amortization      of nuclear fuel                                       |                  | 20 |   |   |   | 15 |   |
| Amortization      of debt issuance costs and premium/discounts          |                  | 3 |   |   |   | 3 |   |
| Deferred      income taxes and investment tax credits, net              |                  | 74 |   |   |   | 15 |   |
| Other                                                                   |                  | (9 | ) |   |   | - |   |
| Changes      in assets and liabilities:                                 |                  |   |   |   |   |   |   |
| Receivables                                                             |                  | 66 |   |   |   | (110 | ) |
| Materials      and supplies                                             |                  | (17 | ) |   |   | (31 | ) |
| Accounts      and wages payable                                         |                  | (253 | ) |   |   | (129 | ) |
| Taxes      accrued, net                                                 |                  | (31 | ) |   |   | 74 |   |
| Assets,      other                                                      |                  | 53 |   |   |   | 55 |   |
| Liabilities,      other                                                 |                  | 26 |   |   |   | (31 | ) |
| Pension      and other postretirement benefit obligations               |                  | 13 |   |   |   | 15 |   |
| Taum      Sauk insurance receivable, net                                |                  | (107 | ) |   |   | (16 | ) |
| Net      cash provided by operating activities                          |                  | 115 |   |   |   | 145 |   |
| Cash      Flows From Investing Activities:                              |                  |   |   |   |   |   |   |
| Capital      expenditures                                               |                  | (377 | ) |   |   | (355 | ) |
| Nuclear      fuel expenditures                                          |                  | (123 | ) |   |   | (24 | ) |
| Changes      in money pool advances                                     |                  | - |   |   |   | 6 |   |
| Proceeds      from intercompany note receivable                         |                  | 6 |   |   |   | - |   |
| Purchases      of securities – nuclear decommissioning trust fund |                  | (247 | ) |   |   | (75 | ) |
| Sales      of securities – nuclear decommissioning trust fund     |                  | 231 |   |   |   | 65 |   |
| Sales      of emission allowances                                       |                  | 1 |   |   |   | 2 |   |
| Net      cash used in investing activities                              |                  | (509 | ) |   |   | (381 | ) |
| Cash      Flows From Financing Activities:                              |                  |   |   |   |   |   |   |
| Dividends      on common stock                                          |                  | (105 | ) |   |   | (127 | ) |
| Dividends      on preferred stock                                       |                  | (3 | ) |   |   | (3 | ) |
| Capital      issuance costs                                             |                  | (5 | ) |   |   | (3 | ) |
| Short-term      debt, net                                               |                  | (49 | ) |   |   | 192 |   |
| Intercompany      note payable – Ameren, net                      |                  | 50 |   |   |   | (40 | ) |
| Redemptions,      repurchases, and maturities of long-term debt         |                  | (378 | ) |   |   | - |   |
| Issuances      of long-term debt                                        |                  | 699 |   |   |   | 425 |   |
| Net      cash provided by financing activities                          |                  | 209 |   |   |   | 444 |   |
| Net      change in cash and cash equivalents                            |                  | (185 | ) |   |   | 208 |   |
| Cash      and cash equivalents at beginning of year                     |                  | 185 |   |   |   | 1 |   |
| Cash      and cash equivalents at end of period                         | $                     | - |   |   | $ | 209 |   |
|                                                                    |                  |   |   |   |   |   |   |

----

| CENTRAL      ILLINOIS PUBLIC SERVICE COMPANY           |                    |
|--------------------------------------------------------|-------------------------|
| STATEMENT      OF INCOME                               |                    |
| (Unaudited)      (In millions)                         |                    |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |
|                                                   | Three      Months Ended |   |   | Six      Months Ended |   |
|                                                   | June      30,           |   |   | June      30, |   |
|                                                   | 2008                    |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Operating      Revenues:                               |                    |   |   |   |   |   |   |   |   |   |   |
| Electric                                               | $                       | 169 |   |   | $ | 193 |   |   | $ | 349 |   |   | $ | 404 |   |
| Gas                                                    |                    | 38 |   |   |   | 36 |   |   |   | 148 |   |   |   | 137 |   |
| Other                                                  |                    | - |   |   |   | - |   |   |   | - |   |   |   | 2 |   |
| Total      operating revenues                          |                    | 207 |   |   |   | 229 |   |   |   | 497 |   |   |   | 543 |   |
| Operating      Expenses:                               |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Purchased      power                                   |                    | 108 |   |   |   | 127 |   |   |   | 231 |   |   |   | 275 |   |
| Gas      purchased for resale                          |                    | 24 |   |   |   | 21 |   |   |   | 104 |   |   |   | 95 |   |
| Other      operations and maintenance                  |                    | 48 |   |   |   | 41 |   |   |   | 98 |   |   |   | 84 |   |
| Depreciation      and amortization                     |                    | 17 |   |   |   | 16 |   |   |   | 34 |   |   |   | 33 |   |
| Taxes      other than income taxes                     |                    | 7 |   |   |   | 9 |   |   |   | 19 |   |   |   | 18 |   |
| Total      operating expenses                          |                    | 204 |   |   |   | 214 |   |   |   | 486 |   |   |   | 505 |   |
| Operating      Income                                  |                    | 3 |   |   |   | 15 |   |   |   | 11 |   |   |   | 38 |   |
| Other      Income and Expenses:                        |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income                              |                    | 3 |   |   |   | 5 |   |   |   | 6 |   |   |   | 8 |   |
| Miscellaneous      expense                             |                    | (2 | ) |   |   | (1 | ) |   |   | (2 | ) |   |   | (1 | ) |
| Total      other income                                |                    | 1 |   |   |   | 4 |   |   |   | 4 |   |   |   | 7 |   |
| Interest      Charges                                  |                    | 8 |   |   |   | 10 |   |   |   | 15 |   |   |   | 18 |   |
| Income      (Loss) Before Income Taxes                 |                    | (4 | ) |   |   | 9 |   |   |   | - |   |   |   | 27 |   |
| Income      Taxes (Benefit)                            |                    | (1 | ) |   |   | 4 |   |   |   | - |   |   |   | 10 |   |
| Net      Income (Loss)                                 |                    | (3 | ) |   |   | 5 |   |   |   | - |   |   |   | 17 |   |
| Preferred      Stock Dividends                         |                    | - |   |   |   | - |   |   |   | 1 |   |   |   | 1 |   |
| Net      Income (Loss) Available to Common Stockholder | $                       | (3 | ) |   | $ | 5 |   |   | $ | (1 | ) |   | $ | 16 |   |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| CENTRAL      ILLINOIS PUBLIC SERVICE COMPANY                                                 |          |
|----------------------------------------------------------------------------------------------|---------------|
|  BALANCE      SHEET                                                                     |          |
| (Unaudited)      (In millions)                                                               |          |
|                                                                                         |          |   |   |   |   |
|                                                                                         | June      30, |   |   | December      31, |   |
|                                                                                         | 2008          |   |   | 2007 |   |
| ASSETS                                                                                       |          |   |   |   |   |
| Current      Assets:                                                                         |          |   |   |   |   |
| Cash      and cash equivalents                                                               | $             | - |   |   | $ | 26 |   |
| Accounts      receivable – trade (less allowance for doubtful                          |          |   |   |   |   |   |   |
| accounts      of $6 and $5, respectively)                                                    |          | 69 |   |   |   | 62 |   |
| Unbilled      revenue                                                                        |          | 49 |   |   |   | 66 |   |
| Miscellaneous      accounts and notes receivable                                             |          | 19 |   |   |   | 19 |   |
| Accounts      receivable – affiliates                                                  |          | 4 |   |   |   | 9 |   |
| Current      portion of intercompany note receivable – Genco                           |          | 42 |   |   |   | 39 |   |
| Current      portion of intercompany tax receivable – Genco                            |          | 9 |   |   |   | 9 |   |
| Materials      and supplies                                                                  |          | 48 |   |   |   | 66 |   |
| Mark-to-market      derivative assets with affiliate                                         |          | 38 |   |   |   | 1 |   |
| Other      current assets                                                                    |          | 19 |   |   |   | 15 |   |
| Total      current assets                                                                    |          | 297 |   |   |   | 312 |   |
| Property      and Plant, Net                                                                 |          | 1,184 |   |   |   | 1,174 |   |
| Investments      and Other Assets:                                                           |          |   |   |   |   |   |   |
| Intercompany      note receivable – Genco                                              |          | 45 |   |   |   | 87 |   |
| Intercompany      tax receivable – Genco                                               |          | 100 |   |   |   | 105 |   |
| Regulatory      assets                                                                       |          | 83 |   |   |   | 113 |   |
| Other      assets                                                                            |          | 79 |   |   |   | 69 |   |
| Total      investments and other assets                                                      |          | 307 |   |   |   | 374 |   |
| TOTAL      ASSETS                                                                            | $             | 1,788 |   |   | $ | 1,860 |   |
|                                                                                         |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDERS' EQUITY                                                    |          |   |   |   |   |   |   |
| Current      Liabilities:                                                                    |          |   |   |   |   |   |   |
| Current      maturities of long-term debt                                                    | $             | 15 |   |   | $ | 15 |   |
| Short-term      debt                                                                         |          | 25 |   |   |   | 125 |   |
| Accounts      and wages payable                                                              |          | 59 |   |   |   | 44 |   |
| Accounts      payable – affiliates                                                     |          | 19 |   |   |   | 19 |   |
| Borrowings      from money pool                                                              |          | 3 |   |   |   | - |   |
| Taxes      accrued                                                                           |          | 4 |   |   |   | 8 |   |
| Customer      deposits                                                                       |          | 16 |   |   |   | 16 |   |
| Regulatory      liabilities                                                                  |          | 21 |   |   |   | 2 |   |
| Other      current liabilities                                                               |          | 37 |   |   |   | 29 |   |
| Total      current liabilities                                                               |          | 199 |   |   |   | 258 |   |
| Long-term      Debt, Net                                                                     |          | 421 |   |   |   | 456 |   |
| Deferred      Credits and Other Liabilities:                                                 |          |   |   |   |   |   |   |
| Accumulated      deferred income taxes and investment tax credits, net                       |          | 266 |   |   |   | 269 |   |
| Regulatory      liabilities                                                                  |          | 320 |   |   |   | 265 |   |
| Accrued      pension and other postretirement benefits                                       |          | 38 |   |   |   | 67 |   |
| Other      deferred credits and liabilities                                                  |          | 28 |   |   |   | 28 |   |
| Total      deferred credits and other liabilities                                            |          | 652 |   |   |   | 629 |   |
| Commitments      and Contingencies (Notes 2, 8, and 9)                                       |          |   |   |   |   |   |   |
| Stockholders'      Equity:                                                                   |          |   |   |   |   |   |   |
| Common      stock, no par value, 45.0 shares authorized – 25.5 shares      outstanding |          | - |   |   |   | - |   |
| Other      paid-in capital                                                                   |          | 191 |   |   |   | 191 |   |
| Preferred      stock not subject to mandatory redemption                                     |          | 50 |   |   |   | 50 |   |
| Retained      earnings                                                                       |          | 275 |   |   |   | 276 |   |
| Total      stockholders' equity                                                              |          | 516 |   |   |   | 517 |   |
| TOTAL      LIABILITIES AND STOCKHOLDERS' EQUITY                                              | $             | 1,788 |   |   | $ | 1,860 |   |
|                                                                                         |          |   |   |   |   |   |   |

----

| CENTRAL      ILLINOIS PUBLIC SERVICE COMPANY                    |                  |
|-----------------------------------------------------------------|-----------------------|
| STATEMENT      OF CASH FLOWS                                    |                  |
| (Unaudited)      (In millions)                                  |                  |
|                                                            |                  |   |   |   |   |
|                                                            | Six      Months Ended |   |
|                                                            | June      30,         |   |
|                                                            | 2008                  |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                      |                  |   |   |   |   |
| Net      income                                                 | $                     | - |   |   | $ | 17 |   |
| Adjustments      to reconcile net income to net cash            |                  |   |   |   |   |   |   |
| provided      by operating activities:                          |                  |   |   |   |   |   |   |
| Depreciation      and amortization                              |                  | 34 |   |   |   | 33 |   |
| Amortization      of debt issuance costs and premium/discounts  |                  | 1 |   |   |   | 1 |   |
| Deferred      income taxes and investment tax credits, net      |                  | (2 | ) |   |   | (10 | ) |
| Changes      in assets and liabilities:                         |                  |   |   |   |   |   |   |
| Receivables                                                     |                  | 20 |   |   |   | 11 |   |
| Materials      and supplies                                     |                  | 18 |   |   |   | 20 |   |
| Accounts      and wages payable                                 |                  | 12 |   |   |   | (30 | ) |
| Taxes      accrued, net                                         |                  | (12 | ) |   |   | (3 | ) |
| Assets,      other                                              |                  | 29 |   |   |   | 6 |   |
| Liabilities,      other                                         |                  | 7 |   |   |   | (4 | ) |
| Pension      and other postretirement benefit obligations       |                  | 2 |   |   |   | 3 |   |
| Net      cash provided by operating activities                  |                  | 109 |   |   |   | 44 |   |
| Cash      Flows From Investing Activities:                      |                  |   |   |   |   |   |   |
| Capital      expenditures                                       |                  | (41 | ) |   |   | (39 | ) |
| Proceeds      from intercompany note receivable – Genco   |                  | 39 |   |   |   | 37 |   |
| Changes      in money pool advances                             |                  | - |   |   |   | 1 |   |
| Net      cash used in investing activities                      |                  | (2 | ) |   |   | (1 | ) |
| Cash      Flows From Financing Activities:                      |                  |   |   |   |   |   |   |
| Dividends      on preferred stock                               |                  | (1 | ) |   |   | (1 | ) |
| Short-term      debt, net                                       |                  | (100 | ) |   |   | 100 |   |
| Changes      in money pool borrowings                           |                  | 3 |   |   |   | - |   |
| Redemptions,      repurchases, and maturities of long-term debt |                  | (35 | ) |   |   | - |   |
| Net      cash provided by (used in) financing activities        |                  | (133 | ) |   |   | 99 |   |
| Net      change in cash and cash equivalents                    |                  | (26 | ) |   |   | 142 |   |
| Cash      and cash equivalents at beginning of year             |                  | 26 |   |   |   | 6 |   |
| Cash      and cash equivalents at end of period                 | $                     | - |   |   | $ | 148 |   |
|                                                            |                  |   |   |   |   |   |   |

----

| AMEREN      ENERGY GENERATING COMPANY |                                 |
|---------------------------------------|--------------------------------------|
| CONSOLIDATED      STATEMENT OF INCOME |                                 |
| (Unaudited)      (In millions)        |                                 |
|                                  |                                 |   |   |   |   |   |   |   |   |   |   |
|                                  |                                 |   |   |   |   |   |   |   |   |   |   |
|                                  | Three      Months EndedJune      30, |   |   | Six      Months EndedJune      30, |   |
|                                  | 2008                                 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
|                                  |                                 |   |   |   |   |   |   |   |   |   |   |
| Operating      Revenues               | $                                    | 194 |   |   | $ | 186 |   |   | $ | 425 |   |   | $ | 429 |   |
| Operating      Expenses:              |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel                                  |                                 | 49 |   |   |   | 74 |   |   |   | 137 |   |   |   | 155 |   |
| Coal      contract settlement         |                                 | (60 | ) |   |   | - |   |   |   | (60 | ) |   |   | - |   |
| Purchased      power                  |                                 | - |   |   |   | - |   |   |   | - |   |   |   | 21 |   |
| Other      operations and maintenance |                                 | 53 |   |   |   | 49 |   |   |   | 93 |   |   |   | 83 |   |
| Depreciation      and amortization    |                                 | 16 |   |   |   | 18 |   |   |   | 32 |   |   |   | 36 |   |
| Taxes      other than income taxes    |                                 | 5 |   |   |   | 4 |   |   |   | 11 |   |   |   | 10 |   |
| Total      operating expenses         |                                 | 63 |   |   |   | 145 |   |   |   | 213 |   |   |   | 305 |   |
| Operating      Income                 |                                 | 131 |   |   |   | 41 |   |   |   | 212 |   |   |   | 124 |   |
| Miscellaneous      Income             |                                 | 3 |   |   |   | 1 |   |   |   | 5 |   |   |   | 1 |   |
| Interest      Charges                 |                                 | 17 |   |   |   | 14 |   |   |   | 26 |   |   |   | 28 |   |
| Income      Before Income Taxes       |                                 | 117 |   |   |   | 28 |   |   |   | 191 |   |   |   | 97 |   |
| Income      Taxes                     |                                 | 43 |   |   |   | 11 |   |   |   | 71 |   |   |   | 37 |   |
| Net      Income                       | $                                    | 74 |   |   | $ | 17 |   |   | $ | 120 |   |   | $ | 60 |   |
|                                  |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| AMEREN      ENERGY GENERATING COMPANY                                                           |          |
|-------------------------------------------------------------------------------------------------|---------------|
| CONSOLIDATED      BALANCE SHEET                                                                 |
| (Unaudited)      (In millions, except shares)                                                   |          |
|                                                                                            |          |   |   |   |   |
|                                                                                            | June      30, |   |   | December      31, |   |
|                                                                                            | 2008          |   |   | 2007 |   |
| ASSETS                                                                                          |          |   |   |   |   |
| Current      Assets:                                                                            |          |   |   |   |   |
| Cash      and cash equivalents                                                                  | $             | 2 |   |   | $ | 2 |   |
| Accounts      receivable – affiliates                                                     |          | 96 |   |   |   | 93 |   |
| Miscellaneous      accounts and notes receivable                                                |          | 66 |   |   |   | 12 |   |
| Materials      and supplies                                                                     |          | 109 |   |   |   | 93 |   |
| Other      current assets                                                                       |          | 11 |   |   |   | 4 |   |
| Total      current assets                                                                       |          | 284 |   |   |   | 204 |   |
| Property      and Plant, Net                                                                    |          | 1,753 |   |   |   | 1,683 |   |
| Intangible      Assets                                                                          |          | 52 |   |   |   | 63 |   |
| Other      Assets                                                                               |          | 8 |   |   |   | 18 |   |
| TOTAL      ASSETS                                                                               | $             | 2,097 |   |   | $ | 1,968 |   |
|                                                                                            |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDER'S EQUITY                                                       |          |   |   |   |   |   |   |
| Current      Liabilities:                                                                       |          |   |   |   |   |   |   |
| Short-term      debt                                                                            | $             | - |   |   | $ | 100 |   |
| Current      portion of intercompany note payable – CIPS                                  |          | 42 |   |   |   | 39 |   |
| Borrowings      from money pool                                                                 |          | 5 |   |   |   | 54 |   |
| Accounts      and wages payable                                                                 |          | 43 |   |   |   | 61 |   |
| Accounts      payable – affiliates                                                        |          | 48 |   |   |   | 57 |   |
| Current      portion of intercompany tax payable – CIPS                                   |          | 9 |   |   |   | 9 |   |
| Taxes      accrued                                                                              |          | 17 |   |   |   | 15 |   |
| Accrued      interest                                                                           |          | 12 |   |   |   | 5 |   |
| Deferred      taxes - current                                                                   |          | 15 |   |   |   | 7 |   |
| Other      current liabilities                                                                  |          | 12 |   |   |   | 18 |   |
| Total      current liabilities                                                                  |          | 203 |   |   |   | 365 |   |
| Long-term      Debt, Net                                                                        |          | 774 |   |   |   | 474 |   |
| Intercompany      Note Payable – CIPS                                                     |          | 45 |   |   |   | 87 |   |
| Deferred      Credits and Other Liabilities:                                                    |          |   |   |   |   |   |   |
| Accumulated      deferred income taxes, net                                                     |          | 168 |   |   |   | 161 |   |
| Accumulated      deferred investment tax credits                                                |          | 6 |   |   |   | 7 |   |
| Intercompany      tax payable – CIPS                                                      |          | 100 |   |   |   | 105 |   |
| Asset      retirement obligations                                                               |          | 48 |   |   |   | 47 |   |
| Accrued      pension and other postretirement benefits                                          |          | 33 |   |   |   | 32 |   |
| Other      deferred credits and liabilities                                                     |          | 37 |   |   |   | 42 |   |
| Total      deferred credits and other liabilities                                               |          | 392 |   |   |   | 394 |   |
| Commitments      and Contingencies (Notes 2, 8 and 9)                                           |          |   |   |   |   |   |   |
| Stockholder's      Equity:                                                                      |          |   |   |   |   |   |   |
| Common      stock, no par value, 10,000 shares authorized – 2,000 shares      outstanding |          | - |   |   |   | - |   |
| Other      paid-in capital                                                                      |          | 503 |   |   |   | 503 |   |
| Retained      earnings                                                                          |          | 204 |   |   |   | 167 |   |
| Accumulated      other comprehensive loss                                                       |          | (24 | ) |   |   | (22 | ) |
| Total      stockholder's equity                                                                 |          | 683 |   |   |   | 648 |   |
| TOTAL      LIABILITIES AND STOCKHOLDER'S EQUITY                                                 | $             | 2,097 |   |   | $ | 1,968 |   |
|                                                                                            |          |   |   |   |   |   |   |

----

| AMEREN      ENERGY GENERATING COMPANY                      |                  |
|------------------------------------------------------------|-----------------------|
| CONSOLIDATED      STATEMENT OF CASH FLOWS                  |                  |
| (Unaudited)      (In millions)                             |                  |
|                                                       |                  |   |   |   |   |
|                                                       | Six      Months Ended |   |
|                                                       | June      30,         |   |
|                                                       | 2008                  |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                 |                  |   |   |   |   |
| Net      income                                            | $                     | 120 |   |   | $ | 60 |   |
| Adjustments      to reconcile net income to net cash       |                  |   |   |   |   |   |   |
| provided      by operating activities:                     |                  |   |   |   |   |   |   |
| Gain      on sales of emission allowances                  |                  | (1 | ) |   |   | (1 | ) |
| Mark-to-market      gain on derivatives                    |                  | (29 | ) |   |   | (1 | ) |
| Coal      contract settlement                              |                  | (60 | ) |   |   | - |   |
| Depreciation      and amortization                         |                  | 45 |   |   |   | 52 |   |
| Deferred      income taxes and investment tax credits, net |                  | 18 |   |   |   | 8 |   |
| Other                                                      |                  | 1 |   |   |   | 1 |   |
| Changes      in assets and liabilities:                    |                  |   |   |   |   |   |   |
| Receivables                                                |                  | 28 |   |   |   | 10 |   |
| Materials      and supplies                                |                  | (16 | ) |   |   | (1 | ) |
| Accounts      and wages payable                            |                  | (24 | ) |   |   | 13 |   |
| Taxes      accrued, net                                    |                  | 3 |   |   |   | (2 | ) |
| Assets,      other                                         |                  | 7 |   |   |   | (25 | ) |
| Liabilities,      other                                    |                  | (2 | ) |   |   | (2 | ) |
| Pension      and other postretirement obligations          |                  | 2 |   |   |   | 3 |   |
| Net      cash provided by operating activities             |                  | 92 |   |   |   | 115 |   |
| Cash      Flows From Investing Activities:                 |                  |   |   |   |   |   |   |
| Capital      expenditures                                  |                  | (117 | ) |   |   | (77 | ) |
| Purchases      of emission allowances                      |                  | (2 | ) |   |   | (5 | ) |
| Sales      of emission allowances                          |                  | 1 |   |   |   | 1 |   |
| Net      cash used in investing activities                 |                  | (118 | ) |   |   | (81 | ) |
| Cash      Flows From Financing Activities:                 |                  |   |   |   |   |   |   |
| Dividends      on common stock                             |                  | (84 | ) |   |   | (113 | ) |
| Debt      issuance costs                                   |                  | (2 | ) |   |   | - |   |
| Short-term      debt, net                                  |                  | (100 | ) |   |   | - |   |
| Changes      in money pool borrowings                      |                  | (49 | ) |   |   | 116 |   |
| Intercompany      note payable – CIPS                |                  | (39 | ) |   |   | (37 | ) |
| Issuances      of long-term debt                           |                  | 300 |   |   |   | - |   |
| Net      cash provided by (used in) financing activities   |                  | 26 |   |   |   | (34 | ) |
| Net      change in cash and cash equivalents               |                  | - |   |   |   | - |   |
| Cash      and cash equivalents at beginning of year        |                  | 2 |   |   |   | 1 |   |
| Cash      and cash equivalents at end of period            | $                     | 2 |   |   | $ | 1 |   |
|                                                       |                  |   |   |   |   |   |   |

----

| CILCORP      INC.                                      |
|--------------------------------------------------------|
| CONSOLIDATED      STATEMENT OF INCOME                  |   |
| (Unaudited)      (In millions)                         |   |
|                                                   |   |   |   |   |   |   |   |   |   |   |   |
|                                                   | Three      Months EndedJune      30, |   |   | Six      Months EndedJune      30, |   |
|                                                   | 2008 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Operating      Revenues:                               |   |   |   |   |   |   |   |   |   |   |   |
| Electric                                               | $ | 162 |   |   | $ | 165 |   |   | $ | 356 |   |   | $ | 345 |   |
| Gas                                                    |   | 69 |   |   |   | 60 |   |   |   | 220 |   |   |   | 195 |   |
| Other                                                  |   | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
| Total      operating revenues                          |   | 232 |   |   |   | 226 |   |   |   | 577 |   |   |   | 541 |   |
| Operating      Expenses:                               |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel                                                   |   | 25 |   |   |   | 14 |   |   |   | 53 |   |   |   | 37 |   |
| Purchased      power                                   |   | 62 |   |   |   | 64 |   |   |   | 140 |   |   |   | 140 |   |
| Gas      purchased for resale                          |   | 50 |   |   |   | 42 |   |   |   | 165 |   |   |   | 145 |   |
| Other      operations and maintenance                  |   | 48 |   |   |   | 43 |   |   |   | 93 |   |   |   | 83 |   |
| Depreciation      and amortization                     |   | 23 |   |   |   | 21 |   |   |   | 46 |   |   |   | 42 |   |
| Taxes      other than income taxes                     |   | 5 |   |   |   | 6 |   |   |   | 14 |   |   |   | 14 |   |
| Total      operating expenses                          |   | 213 |   |   |   | 190 |   |   |   | 511 |   |   |   | 461 |   |
|     Operating      Income          |   | 19 |   |   |   | 36 |   |   |   | 66 |   |   |   | 80 |   |
|                                                   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Other      Income and Expenses:                        |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income                              |   | 1 |   |   |   | - |   |   |   | 1 |   |   |   | 2 |   |
| Miscellaneous      expense                             |   | (2 | ) |   |   | (2 | ) |   |   | (2 | ) |   |   | (3 | ) |
| Total      other expenses                              |   | (1 | ) |   |   | (2 | ) |   |   | (1 | ) |   |   | (1 | ) |
| Interest      Charges                                  |   | 13 |   |   |   | 15 |   |   |   | 28 |   |   |   | 29 |   |
| Income      Before Income Taxes                        |   | 5 |   |   |   | 19 |   |   |   | 37 |   |   |   | 50 |   |
| Income      Taxes                                      |   | - |   |   |   | 6 |   |   |   | 12 |   |   |   | 16 |   |
| Income      Before Preferred Dividends of Subsidiaries |   | 5 |   |   |   | 13 |   |   |   | 25 |   |   |   | 34 |   |
| Preferred      Dividends of Subsidiaries               |   | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
|     Net      Income                | $ | 4 |   |   | $ | 12 |   |   | $ | 24 |   |   | $ | 33 |   |
|                                                   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| CILCORP      INC.                                                                               |          |
|-------------------------------------------------------------------------------------------------|---------------|
| CONSOLIDATED      BALANCE SHEET                                                                 |          |
| (Unaudited)      (In millions, except shares)                                                   |          |
|                                                                                            |          |   |   |   |   |
|                                                                                            | June      30, |   |   | December      31, |   |
|                                                                                            | 2008          |   |   | 2007 |   |
|                                                                                            |          |   |   |   |   |
| ASSETS                                                                                          |          |   |   |   |   |
| Current      Assets:                                                                            |          |   |   |   |   |
| Cash      and cash equivalents                                                                  | $             | 19 |   |   | $ | 6 |   |
| Accounts      receivable – trade (less allowance for doubtful                             |          |   |   |   |   |   |   |
| accounts      of $3 and $2, respectively)                                                       |          | 54 |   |   |   | 52 |   |
| Unbilled      revenue                                                                           |          | 39 |   |   |   | 54 |   |
| Accounts      receivable – affiliates                                                     |          | 57 |   |   |   | 47 |   |
| Advances      to money pool                                                                     |          | 2 |   |   |   | 2 |   |
| Note      receivable – affiliates                                                         |          | 1 |   |   |   | - |   |
| Materials      and supplies                                                                     |          | 101 |   |   |   | 110 |   |
| Mark-to-market      derivative assets                                                           |          | 10 |   |   |   | 1 |   |
| Mark-to-market      derivative assets with affiliate                                            |          | 24 |   |   |   | 1 |   |
| Income      tax receivable                                                                      |          | 19 |   |   |   | 16 |   |
| Other      current assets                                                                       |          | 27 |   |   |   | 22 |   |
| Total      current assets                                                                       |          | 353 |   |   |   | 311 |   |
| Property      and Plant, Net                                                                    |          | 1,562 |   |   |   | 1,494 |   |
| Investments      and Other Assets:                                                              |          |   |   |   |   |   |   |
| Goodwill                                                                                        |          | 542 |   |   |   | 542 |   |
| Intangible      assets                                                                          |          | 37 |   |   |   | 41 |   |
| Regulatory      assets                                                                          |          | 24 |   |   |   | 32 |   |
| Other      assets                                                                               |          | 59 |   |   |   | 39 |   |
| Total      investments and other assets                                                         |          | 662 |   |   |   | 654 |   |
| TOTAL      ASSETS                                                                               | $             | 2,577 |   |   | $ | 2,459 |   |
|                                                                                            |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDER'S EQUITY                                                       |          |   |   |   |   |   |   |
| Current      Liabilities:                                                                       |          |   |   |   |   |   |   |
| Short-term      debt                                                                            | $             | 550 |   |   | $ | 520 |   |
| Borrowings      from money pool, net                                                            |          | 2 |   |   |   | - |   |
| Intercompany      note payable – Ameren                                                   |          | 15 |   |   |   | 2 |   |
| Accounts      and wages payable                                                                 |          | 66 |   |   |   | 75 |   |
| Accounts      payable – affiliates                                                        |          | 54 |   |   |   | 34 |   |
| Taxes      accrued                                                                              |          | 3 |   |   |   | 3 |   |
| Other      current liabilities                                                                  |          | 69 |   |   |   | 54 |   |
| Total      current liabilities                                                                  |          | 759 |   |   |   | 688 |   |
| Long-term      Debt, Net                                                                        |          | 515 |   |   |   | 537 |   |
| Preferred      Stock of Subsidiary Subject to Mandatory Redemption                              |          | 16 |   |   |   | 16 |   |
| Deferred      Credits and Other Liabilities:                                                    |          |   |   |   |   |   |   |
| Accumulated      deferred income taxes, net                                                     |          | 197 |   |   |   | 193 |   |
| Accumulated      deferred investment tax credits                                                |          | 5 |   |   |   | 6 |   |
| Regulatory      liabilities                                                                     |          | 147 |   |   |   | 92 |   |
| Accrued      pension and other postretirement benefits                                          |          | 111 |   |   |   | 127 |   |
| Other      deferred credits and liabilities                                                     |          | 67 |   |   |   | 66 |   |
| Total      deferred credits and other liabilities                                               |          | 527 |   |   |   | 484 |   |
| Preferred      Stock of Subsidiary Not Subject to Mandatory Redemption                          |          | 19 |   |   |   | 19 |   |
| Commitments      and Contingencies (Notes 2, 8 and 9)                                           |          |   |   |   |   |   |   |
| Stockholder's      Equity:                                                                      |          |   |   |   |   |   |   |
| Common      stock, no par value, 10,000 shares authorized – 1,000 shares      outstanding |          | - |   |   |   | - |   |
| Other      paid-in capital                                                                      |          | 627 |   |   |   | 627 |   |
| Retained      earnings                                                                          |          | 82 |   |   |   | 58 |   |
| Accumulated      other comprehensive income                                                     |          | 32 |   |   |   | 30 |   |
| Total      stockholder's equity                                                                 |          | 741 |   |   |   | 715 |   |
| TOTAL      LIABILITIES AND STOCKHOLDER'S EQUITY                                                 | $             | 2,577 |   |   | $ | 2,459 |   |
|                                                                                            |          |   |   |   |   |   |   |

----

| CILCORP      INC.                                               |                  |
|-----------------------------------------------------------------|-----------------------|
| CONSOLIDATED      STATEMENT OF CASH FLOWS                       |                  |
| (Unaudited)      (In millions)                                  |                  |
|                                                            |                  |   |   |   |   |
|                                                            |                  |   |   |   |   |
|                                                            | Six      Months Ended |   |
|                                                            | June      30,         |   |
|                                                            | 2008                  |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                      |                  |   |   |   |   |
| Net      income                                                 | $                     | 24 |   |   | $ | 33 |   |
| Adjustments      to reconcile net income to net cash            |                  |   |   |   |   |   |   |
| provided      by operating activities:                          |                  |   |   |   |   |   |   |
| Mark-to-market      gain on derivatives                         |                  | (7 | ) |   |   | - |   |
| Depreciation      and amortization                              |                  | 46 |   |   |   | 38 |   |
| Amortization      of debt issuance costs and premium/discounts  |                  | - |   |   |   | 1 |   |
| Deferred      income taxes and investment tax credits           |                  | 14 |   |   |   | (3 | ) |
| Changes      in assets and liabilities:                         |                  |   |   |   |   |   |   |
| Receivables                                                     |                  | 10 |   |   |   | (13 | ) |
| Materials      and supplies                                     |                  | 9 |   |   |   | 14 |   |
| Accounts      and wages payable                                 |                  | 43 |   |   |   | 3 |   |
| Taxes      accrued, net                                         |                  | (10 | ) |   |   | (3 | ) |
| Assets,      other                                              |                  | (2 | ) |   |   | (2 | ) |
| Liabilities,      other                                         |                  | 9 |   |   |   | (7 | ) |
| Pension      and postretirement benefit obligations             |                  | (8 | ) |   |   | 1 |   |
| Net      cash provided by operating activities                  |                  | 128 |   |   |   | 62 |   |
| Cash      Flows From Investing Activities:                      |                  |   |   |   |   |   |   |
| Capital      expenditures                                       |                  | (140 | ) |   |   | (127 | ) |
| Changes      in money pool advances                             |                  | - |   |   |   | 42 |   |
| Other                                                           |                  | (1 | ) |   |   | - |   |
| Net      cash used in investing activities                      |                  | (141 | ) |   |   | (85 | ) |
| Cash      Flows From Financing Activities:                      |                  |   |   |   |   |   |   |
| Short-term      debt, net                                       |                  | 30 |   |   |   | 250 |   |
| Changes      in money pool borrowings                           |                  | 2 |   |   |   | - |   |
| Intercompany      note payable – Ameren, net              |                  | 13 |   |   |   | (73 | ) |
| Redemptions,      repurchases, and maturities of long-term debt |                  | (19 | ) |   |   | (50 | ) |
| Net      cash provided by financing activities                  |                  | 26 |   |   |   | 127 |   |
|                                                            |                  |   |   |   |   |   |   |
| Net      change in cash and cash equivalents                    |                  | 13 |   |   |   | 104 |   |
| Cash      and cash equivalents at beginning of year             |                  | 6 |   |   |   | 4 |   |
| Cash      and cash equivalents at end of period                 | $                     | 19 |   |   | $ | 108 |   |
|                                                            |                  |   |   |   |   |   |   |

----

| CENTRAL      ILLINOIS LIGHT COMPANY              |                                 |
|--------------------------------------------------|--------------------------------------|
| CONSOLIDATED      STATEMENT OF INCOME            |                                 |
| (Unaudited)      (In millions)                   |                                 |
|                                             |                                 |   |   |   |   |   |   |   |   |   |   |
|                                             | Three      Months EndedJune      30, |   |   | Six      Months EndedJune      30, |   |
|                                             | 2008                                 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Operating      Revenues:                         |                                 |   |   |   |   |   |   |   |   |   |   |
| Electric                                         | $                                    | 162 |   |   | $ | 165 |   |   | $ | 356 |   |   | $ | 345 |   |
| Gas                                              |                                 | 69 |   |   |   | 60 |   |   |   | 220 |   |   |   | 195 |   |
| Other                                            |                                 | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
| Total      operating revenues                    |                                 | 232 |   |   |   | 226 |   |   |   | 577 |   |   |   | 541 |   |
|                                             |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Operating      Expenses:                         |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel                                             |                                 | 23 |   |   |   | 12 |   |   |   | 50 |   |   |   | 34 |   |
| Purchased      power                             |                                 | 62 |   |   |   | 64 |   |   |   | 140 |   |   |   | 140 |   |
| Gas      purchased for resale                    |                                 | 50 |   |   |   | 42 |   |   |   | 165 |   |   |   | 145 |   |
| Other      operations and maintenance            |                                 | 49 |   |   |   | 46 |   |   |   | 97 |   |   |   | 87 |   |
| Depreciation      and amortization               |                                 | 21 |   |   |   | 18 |   |   |   | 41 |   |   |   | 36 |   |
| Taxes      other than income taxes               |                                 | 5 |   |   |   | 5 |   |   |   | 14 |   |   |   | 13 |   |
| Total      operating expenses                    |                                 | 210 |   |   |   | 187 |   |   |   | 507 |   |   |   | 455 |   |
| Operating      Income                            |                                 | 22 |   |   |   | 39 |   |   |   | 70 |   |   |   | 86 |   |
| Other      Income and Expenses:                  |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income                        |                                 | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 2 |   |
| Miscellaneous      expense                       |                                 | (1 | ) |   |   | (2 | ) |   |   | (1 | ) |   |   | (3 | ) |
| Total      other expenses                        |                                 | - |   |   |   | (1 | ) |   |   | - |   |   |   | (1 | ) |
| Interest      Charges                            |                                 | 5 |   |   |   | 5 |   |   |   | 11 |   |   |   | 11 |   |
| Income      Before Income Taxes                  |                                 | 17 |   |   |   | 33 |   |   |   | 59 |   |   |   | 74 |   |
| Income      Taxes                                |                                 | 5 |   |   |   | 12 |   |   |   | 21 |   |   |   | 26 |   |
| Net      Income                                  |                                 | 12 |   |   |   | 21 |   |   |   | 38 |   |   |   | 48 |   |
| Preferred      Stock Dividends                   |                                 | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
| Net      Income Available To Common Shareholders | $                                    | 11 |   |   | $ | 20 |   |   | $ | 37 |   |   | $ | 47 |   |
|                                             |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| CENTRAL      ILLINOIS LIGHT COMPANY                                                          |          |
|----------------------------------------------------------------------------------------------|---------------|
| CONSOLIDATED      BALANCE SHEET                                                              |          |
| (Unaudited)      (In millions)                                                               |          |
|                                                                                         |          |   |   |   |   |
|                                                                                         |          |   |   |   |   |
|                                                                                         | June      30, |   |   | December      31 |   |
|                                                                                         | 2008          |   |   | 2007 |   |
| ASSETS                                                                                       |          |   |   |   |   |
| Current      Assets:                                                                         |          |   |   |   |   |
| Cash      and cash equivalents                                                               | $             | 19 |   |   | $ | 6 |   |
| Accounts      receivable – trade (less allowance for doubtful                          |          |   |   |   |   |   |   |
| accounts      of $3 and $2, respectively)                                                    |          | 54 |   |   |   | 52 |   |
| Unbilled      revenue                                                                        |          | 39 |   |   |   | 54 |   |
| Accounts      receivable – affiliates                                                  |          | 53 |   |   |   | 45 |   |
| Materials      and supplies                                                                  |          | 101 |   |   |   | 110 |   |
| Mark-to-market      derivative assets                                                        |          | 10 |   |   |   | 1 |   |
| Mark-to-market      derivative assets with affiliate                                         |          | 24 |   |   |   | 1 |   |
| Income      tax receivable                                                                   |          | 17 |   |   |   | 8 |   |
| Other      current assets                                                                    |          | 25 |   |   |   | 17 |   |
| Total      current assets                                                                    |          | 342 |   |   |   | 294 |   |
| Property      and Plant, Net                                                                 |          | 1,562 |   |   |   | 1,492 |   |
| Investments      and Other Assets:                                                           |          |   |   |   |   |   |   |
| Intangible      assets                                                                       |          | 1 |   |   |   | 1 |   |
| Regulatory      assets                                                                       |          | 24 |   |   |   | 32 |   |
| Other      assets                                                                            |          | 62 |   |   |   | 43 |   |
| Total      investments and other assets                                                      |          | 87 |   |   |   | 76 |   |
| TOTAL      ASSETS                                                                            | $             | 1,991 |   |   | $ | 1,862 |   |
|                                                                                         |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDERS' EQUITY                                                    |          |   |   |   |   |   |   |
| Current      Liabilities:                                                                    |          |   |   |   |   |   |   |
| Short-term      debt                                                                         | $             | 375 |   |   | $ | 345 |   |
| Borrowings      from money pool                                                              |          | 2 |   |   |   | - |   |
| Accounts      and wages payable                                                              |          | 66 |   |   |   | 75 |   |
| Accounts      payable – affiliates                                                     |          | 54 |   |   |   | 34 |   |
| Taxes      accrued                                                                           |          | 2 |   |   |   | 3 |   |
| Other      current liabilities                                                               |          | 60 |   |   |   | 45 |   |
| Total      current liabilities                                                               |          | 559 |   |   |   | 502 |   |
| Long-term      Debt, Net                                                                     |          | 129 |   |   |   | 148 |   |
| Preferred      Stock Subject to Mandatory Redemption                                         |          | 16 |   |   |   | 16 |   |
| Deferred      Credits and Other Liabilities:                                                 |          |   |   |   |   |   |   |
| Accumulated      deferred income taxes, net                                                  |          | 168 |   |   |   | 155 |   |
| Accumulated      deferred investment tax credits                                             |          | 5 |   |   |   | 6 |   |
| Regulatory      liabilities                                                                  |          | 273 |   |   |   | 220 |   |
| Accrued      pension and other postretirement benefits                                       |          | 111 |   |   |   | 127 |   |
| Other      deferred credits and liabilities                                                  |          | 67 |   |   |   | 66 |   |
| Total      deferred credits and other liabilities                                            |          | 624 |   |   |   | 574 |   |
| Commitments      and Contingencies (Notes 2, 8 and 9)                                        |          |   |   |   |   |   |   |
| Stockholders'      Equity:                                                                   |          |   |   |   |   |   |   |
| Common      stock, no par value, 20.0 shares authorized – 13.6 shares      outstanding |          | - |   |   |   | - |   |
| Preferred      stock not subject to mandatory redemption                                     |          | 19 |   |   |   | 19 |   |
| Other      paid-in capital                                                                   |          | 429 |   |   |   | 429 |   |
| Retained      earnings                                                                       |          | 209 |   |   |   | 172 |   |
| Accumulated      other comprehensive income                                                  |          | 6 |   |   |   | 2 |   |
| Total      stockholders' equity                                                              |          | 663 |   |   |   | 622 |   |
| TOTAL      LIABILITIES AND STOCKHOLDERS' EQUITY                                              | $             | 1,991 |   |   | $ | 1,862 |   |
|                                                                                         |          |   |   |   |   |   |   |

----

| CENTRAL      ILLINOIS LIGHT COMPANY                             |                  |
|-----------------------------------------------------------------|-----------------------|
| CONSOLIDATED      STATEMENT OF CASH FLOWS                       |                  |
| (Unaudited)      (In millions)                                  |                  |
|                                                            |                  |   |   |   |   |
|                                                            | Six      Months Ended |   |
|                                                            | June      30,         |   |
|                                                            | 2008                  |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                      |                  |   |   |   |   |
| Net      income                                                 | $                     | 37 |   |   | $ | 48 |   |
| Adjustments      to reconcile net income to net cash            |                  |   |   |   |   |   |   |
| provided      by operating activities:                          |                  |   |   |   |   |   |   |
| Mark-to-market      gain on derivatives                         |                  | (7 | ) |   |   | - |   |
| Depreciation      and amortization                              |                  | 41 |   |   |   | 37 |   |
| Amortization      of debt issuance costs and premium/discounts  |                  | - |   |   |   | 1 |   |
| Deferred      income taxes and investment tax credits, net      |                  | 14 |   |   |   | (3 | ) |
| Changes      in assets and liabilities:                         |                  |   |   |   |   |   |   |
| Receivables                                                     |                  | 13 |   |   |   | (11 | ) |
| Materials      and supplies                                     |                  | 9 |   |   |   | 14 |   |
| Accounts      and wages payable                                 |                  | 42 |   |   |   | 16 |   |
| Taxes      accrued, net                                         |                  | (11 | ) |   |   | (3 | ) |
| Assets,      other                                              |                  | (4 | ) |   |   | (7 | ) |
| Liabilities,      other                                         |                  | 6 |   |   |   | (4 | ) |
| Pension      and postretirement benefit obligations             |                  | (1 | ) |   |   | 1 |   |
| Net      cash provided by operating activities                  |                  | 139 |   |   |   | 89 |   |
| Cash      Flows From Investing Activities:                      |                  |   |   |   |   |   |   |
| Capital      expenditures                                       |                  | (140 | ) |   |   | (127 | ) |
| Changes      in money pool advances                             |                  | - |   |   |   | 42 |   |
| Other                                                           |                  | 1 |   |   |   | - |   |
| Net      cash used in investing activities                      |                  | (139 | ) |   |   | (85 | ) |
| Cash      Flows From Financing Activities:                      |                  |   |   |   |   |   |   |
| Dividends      on preferred stock                               |                  | - |   |   |   | (1 | ) |
| Short-term      debt, net                                       |                  | 30 |   |   |   | 125 |   |
| Changes      in money pool borrowings                           |                  | 2 |   |   |   | - |   |
| Redemptions,      repurchases, and maturities of long-term debt |                  | (19 | ) |   |   | (50 | ) |
| Capital      contribution from parent                           |                  | - |   |   |   | 14 |   |
| Net      cash provided by financing activities                  |                  | 13 |   |   |   | 88 |   |
| Net      change in cash and cash equivalents                    |                  | 13 |   |   |   | 92 |   |
| Cash      and cash equivalents at beginning of year             |                  | 6 |   |   |   | 3 |   |
| Cash      and cash equivalents at end of period                 | $                     | 19 |   |   | $ | 95 |   |
|                                                            |                  |   |   |   |   |   |   |

----

| ILLINOIS      POWER COMPANY                            |                    |
|--------------------------------------------------------|-------------------------|
| CONSOLIDATED      STATEMENT OF INCOME                  |                    |
| (Unaudited)      (In millions)                         |                    |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |
|                                                   | Three      Months Ended |   |   | Six      Months Ended |   |
|                                                   | June      30,           |   |   | June      30, |   |
|                                                   | 2008                    |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Operating      Revenues:                               |                    |   |   |   |   |   |   |   |   |   |   |
|   Electric                                   | $                       | 258 |   |   | $ | 280 |   |   | $ | 496 |   |   | $ | 552 |   |
|   Gas                                        |                    | 101 |   |   |   | 85 |   |   |   | 365 |   |   |   | 326 |   |
|   Other                                      |                    | 1 |   |   |   | - |   |   |   | 2 |   |   |   | 2 |   |
| Total      operating revenues                          |                    | 360 |   |   |   | 365 |   |   |   | 863 |   |   |   | 880 |   |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Operating      Expenses:                               |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Purchased      power                       |                    | 161 |   |   |   | 178 |   |   |   | 314 |   |   |   | 363 |   |
|   Gas      purchased for resale              |                    | 71 |   |   |   | 56 |   |   |   | 276 |   |   |   | 241 |   |
|   Other      operations and maintenance      |                    | 77 |   |   |   | 58 |   |   |   | 143 |   |   |   | 112 |   |
|   Depreciation      and amortization         |                    | 26 |   |   |   | 24 |   |   |   | 51 |   |   |   | 50 |   |
|   Amortization      of regulatory assets     |                    | 4 |   |   |   | 4 |   |   |   | 8 |   |   |   | 8 |   |
|   Taxes      other than income taxes         |                    | 13 |   |   |   | 16 |   |   |   | 36 |   |   |   | 37 |   |
| Total      operating expenses                          |                    | 352 |   |   |   | 336 |   |   |   | 828 |   |   |   | 811 |   |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Operating      Income                                  |                    | 8 |   |   |   | 29 |   |   |   | 35 |   |   |   | 69 |   |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Other      Income and Expenses:                        |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income                              |                    | 3 |   |   |   | 3 |   |   |   | 6 |   |   |   | 5 |   |
| Miscellaneous      expense                             |                    | (2 | ) |   |   | - |   |   |   | (3 | ) |   |   | (1 | ) |
| Total      other income                                |                    | 1 |   |   |   | 3 |   |   |   | 3 |   |   |   | 4 |   |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest      Charges                                  |                    | 26 |   |   |   | 20 |   |   |   | 50 |   |   |   | 36 |   |
| Income      (Loss) Before Income Taxes                 |                    | (17 | ) |   |   | 12 |   |   |   | (12 | ) |   |   | 37 |   |
| Income      Taxes (Benefit)                            |                    | (7 | ) |   |   | 5 |   |   |   | (5 | ) |   |   | 15 |   |
| Net      Income (Loss)                                 |                    | (10 | ) |   |   | 7 |   |   |   | (7 | ) |   |   | 22 |   |
| Preferred      Stock Dividends                         |                    | - |   |   |   | - |   |   |   | 1 |   |   |   | 1 |   |
| Net      Income (Loss) Available to Common Stockholder | $                       | (10 | ) |   | $ | 7 |   |   | $ | (8 | ) |   | $ | 21 |   |
|                                                   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

| ILLINOIS      POWER COMPANY                                                                   |          |
|-----------------------------------------------------------------------------------------------|---------------|
| CONSOLIDATED      BALANCE SHEET                                                               |          |
| (Unaudited)      (In millions)                                                                |          |
|                                                                                          |          |   |   |   |   |
|                                                                                          | June      30, |   |   | December      31, |   |
|                                                                                          | 2008          |   |   | 2007 |   |
| ASSETS                                                                                        |          |   |   |   |   |
| Current      Assets:                                                                          |          |   |   |   |   |
| Cash      and cash equivalents                                                                | $             | 33 |   |   | $ | 6 |   |
| Accounts      receivable - trade (less allowance for doubtful                                 |          |   |   |   |   |   |   |
| accounts      of $11 and $9, respectively)                                                    |          | 140 |   |   |   | 137 |   |
| Unbilled      revenue                                                                         |          | 93 |   |   |   | 118 |   |
| Accounts      receivable – affiliates                                                   |          | 15 |   |   |   | 17 |   |
| Advances      to money pool                                                                   |          | 5 |   |   |   | - |   |
| Materials      and supplies                                                                   |          | 114 |   |   |   | 134 |   |
| Mark-to-market      derivative assets                                                         |          | 30 |   |   |   | 2 |   |
| Mark-to-market      derivative assets with affiliate                                          |          | 45 |   |   |   | - |   |
| Other      current assets                                                                     |          | 43 |   |   |   | 36 |   |
| Total      current assets                                                                     |          | 518 |   |   |   | 450 |   |
| Property      and Plant, Net                                                                  |          | 2,250 |   |   |   | 2,220 |   |
| Investments      and Other Assets:                                                            |          |   |   |   |   |   |   |
| Investment      in IP SPT                                                                     |          | 11 |   |   |   | 10 |   |
| Goodwill                                                                                      |          | 214 |   |   |   | 214 |   |
| Regulatory      assets                                                                        |          | 296 |   |   |   | 316 |   |
| Other      assets                                                                             |          | 155 |   |   |   | 109 |   |
| Total      investments and other assets                                                       |          | 676 |   |   |   | 649 |   |
| TOTAL      ASSETS                                                                             | $             | 3,444 |   |   | $ | 3,319 |   |
|                                                                                          |          |   |   |   |   |   |   |
| LIABILITIES      AND STOCKHOLDERS’ EQUITY                                               |          |   |   |   |   |   |   |
| Current      Liabilities:                                                                     |          |   |   |   |   |   |   |
| Current      maturities of long-term debt                                                     | $             | 251 |   |   | $ | - |   |
| Current      maturities of long-term debt payable to IP SPT                                   |          | 15 |   |   |   | 54 |   |
| Short-term      debt                                                                          |          | 175 |   |   |   | 175 |   |
| Accounts      and wages payable                                                               |          | 117 |   |   |   | 85 |   |
| Accounts      payable – affiliates                                                      |          | 44 |   |   |   | 36 |   |
| Taxes      accrued                                                                            |          | 5 |   |   |   | 7 |   |
| Customer      deposits                                                                        |          | 38 |   |   |   | 40 |   |
| Other      current liabilities                                                                |          | 98 |   |   |   | 40 |   |
| Total      current liabilities                                                                |          | 743 |   |   |   | 437 |   |
| Long-term      Debt, Net                                                                      |          | 759 |   |   |   | 1,014 |   |
| Long-term      Debt to IP SPT                                                                 |          | - |   |   |   | 2 |   |
| Deferred      Credits and Other Liabilities:                                                  |          |   |   |   |   |   |   |
| Regulatory      liabilities                                                                   |          | 241 |   |   |   | 129 |   |
| Accrued      pension and other postretirement benefits                                        |          | 185 |   |   |   | 189 |   |
| Accumulated      deferred income taxes                                                        |          | 148 |   |   |   | 148 |   |
| Other      deferred credits and liabilities                                                   |          | 99 |   |   |   | 92 |   |
| Total      deferred credits and other liabilities                                             |          | 673 |   |   |   | 558 |   |
| Commitments      and Contingencies (Notes 2, 8 and 9)                                         |          |   |   |   |   |   |   |
| Stockholders’      Equity:                                                              |          |   |   |   |   |   |   |
| Common      stock, no par value, 100.0 shares authorized – 23.0 shares      outstanding |          | - |   |   |   | - |   |
| Other      paid-in-capital                                                                    |          | 1,194 |   |   |   | 1,194 |   |
| Preferred      stock not subject to mandatory redemption                                      |          | 46 |   |   |   | 46 |   |
| Retained      earnings                                                                        |          | 25 |   |   |   | 64 |   |
| Accumulated      other comprehensive income                                                   |          | 4 |   |   |   | 4 |   |
| Total      stockholders’ equity                                                         |          | 1,269 |   |   |   | 1,308 |   |
| TOTAL      LIABILITIES AND STOCKHOLDERS’ EQUITY                                         | $             | 3,444 |   |   | $ | 3,319 |   |
|                                                                                          |          |   |   |   |   |   |   |

----

| ILLINOIS      POWER COMPANY                                    |                  |
|----------------------------------------------------------------|-----------------------|
| CONSOLIDATED      STATEMENT OF CASH FLOWS                      |                  |
| (Unaudited)      (In millions)                                 |                  |
|                                                           |                  |   |   |   |   |
|                                                           | Six      Months Ended |   |
|                                                           | June      30,         |   |
|                                                           | 2008                  |   |   | 2007 |   |
| Cash      Flows From Operating Activities:                     |                  |   |   |   |   |
| Net      income (loss)                                         | $                     | (7 | ) |   | $ | 22 |   |
| Adjustments      to reconcile net income to net cash           |                  |   |   |   |   |   |   |
|   provided      by operating activities:             |                  |   |   |   |   |   |   |
| Depreciation      and amortization                             |                  | 54 |   |   |   | 42 |   |
| Amortization      of debt issuance costs and premium/discounts |                  | 4 |   |   |   | 4 |   |
| Deferred      income taxes                                     |                  | 14 |   |   |   | 6 |   |
| Changes      in assets and liabilities:                        |                  |   |   |   |   |   |   |
| Receivables                                                    |                  | 24 |   |   |   | 1 |   |
| Materials      and supplies                                    |                  | 20 |   |   |   | 29 |   |
| Accounts      and wages payable                                |                  | 41 |   |   |   | (38 | ) |
| Taxes      accrued, net                                        |                  | (16 | ) |   |   | (2 | ) |
| Assets,      other                                             |                  | 13 |   |   |   | (7 | ) |
| Liabilities,      other                                        |                  | 40 |   |   |   | 4 |   |
| Pension      and other postretirement benefit obligations      |                  | (8 | ) |   |   | 12 |   |
| Net      cash provided by operating activities                 |                  | 179 |   |   |   | 73 |   |
|                                                           |                  |   |   |   |   |   |   |
| Cash      Flows From Investing Activities:                     |                  |   |   |   |   |   |   |
| Capital      expenditures                                      |                  | (73 | ) |   |   | (92 | ) |
| Changes      in money pool advances                            |                  | (5 | ) |   |   | - |   |
| Other                                                          |                  | (1 | ) |   |   | (1 | ) |
| Net      cash used in investing activities                     |                  | (79 | ) |   |   | (93 | ) |
|                                                           |                  |   |   |   |   |   |   |
| Cash      Flows From Financing Activities:                     |                  |   |   |   |   |   |   |
| Dividends      on common stock                                 |                  | (30 | ) |   |   | - |   |
| Dividends      on preferred stock                              |                  | (1 | ) |   |   | (1 | ) |
| Capital      issuance costs                                    |                  | (2 | ) |   |   | - |   |
| Short-term      debt, net                                      |                  | - |   |   |   | 250 |   |
| Changes      in money pool borrowings, net                     |                  | - |   |   |   | (43 | ) |
| Redemptions,      repurchases and maturities of long-term debt |                  | (337 | ) |   |   | - |   |
| Issuance      of long-term debt                                |                  | 336 |   |   |   | - |   |
| IP      SPT maturities                                         |                  | (43 | ) |   |   | (43 | ) |
| Overfunding      of TFNs                                       |                  | 4 |   |   |   | - |   |
| Net      cash provided by (used in) financing activities       |                  | (73 | ) |   |   | 163 |   |
| Net      change in cash and cash equivalents                   |                  | 27 |   |   |   | 143 |   |
| Cash      and cash equivalents at beginning of year            |                  | 6 |   |   |   | - |   |
| Cash      and cash equivalents at end of period                | $                     | 33 |   |   | $ | 143 |   |
|                                                           |                  |   |   |   |   |   |   |

----

| ·   | UE,      or Union Electric Company, also known as AmerenUE, operates a      rate-regulated electric generation, transmission and distribution      business, and a rate-regulated natural gas transmission and distribution      business in Missouri. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | CIPS,      or Central Illinois Public Service Company, also known as AmerenCIPS,      operates a rate-regulated electric and natural gas transmission and      distribution business in Illinois. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Genco,      or Ameren Energy Generating Company, operates a non-rate-regulated      electric generation business in Illinois and  Missouri. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | CILCO,      or Central Illinois Light Company, also known as AmerenCILCO, is a      subsidiary of CILCORP (a holding company). It operates a rate-regulated      electric transmission and distribution business, a non-rate-regulated      electric generation business (through its subsidiary, AERG) and a      rate-regulated natural gas transmission and distribution business in      Illinois. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | IP,      or Illinois Power Company, also known as AmerenIP, operates a      rate-regulated electric and natural gas transmission and distribution      business in Illinois. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                    | Three      Months |   |   | Six      Months |   |
|-------------------------|-------------------|--------|--------|-----------------|--------|
|                    | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Operating      revenues | $                 | 137    |   |            | $      | 109 |   |   | $ | 247 |   |   | $ | 206 |   |
| Operating      income   |              | 68     |   |            |   | 51 |   |   |   | 132 |   |   |   | 105 |   |
| Net      income         |              | 42     |   |            |   | 32 |   |   |   | 82 |   |   |   | 66 |   |

----

|                                                                                                                                                                                                                                                                                                                                                                 | Performance      Share Units |      |   | Restricted      Shares                         |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------|-----------|--------|------------------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                 | Shares                       |      |   | Weighted-average      Fair      Value Per Unit |   |   | Shares |   |   | Weighted-average      Fair      Value Per Share |   |
| Nonvested      at January 1,      2008                                                      |                         | 669,403   |   |                                           | $      | 57.88 |   |   |   | 316,768 |   |   | $ | 46.23 |   |
| Granted(a)                                                                                  |                         | 495,847   |   |                                           |   | 47.57 |   |   |   | - |   |   |   | - |   |
| Dividends                                                                                                                                                                                                                                                                                                                                                            |                         | -         |   |                                           |   | - |   |   |   | 5,974 |   |   |   | 42.83 |   |
| Forfeitures                                                                                 |                         | -         |   |                                           |   | - |   |   |   | (2,163 | ) |   |   | 48.19 |   |
| Vested(b)                                                                                   |                         | (40,575   | )      |                                           |   | 53.48 |   |   |   | (114,286 | ) |   |   | 44.05 |   |
| Nonvested      at June 30,      2008                                                        |                         | 1,124,675 |   |                                           | $      | 53.50 |   |   |   | 206,293 |   |   | $ | 47.46 |   |

| (a)   | Includes      performance share units (share units) granted to certain executive and      nonexecutive officers and other eligible employees in February 2008 under      the 2006 Plan. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Share      units vested due to attainment of retirement eligibility by certain      employees. Actual shares issued for retirement-eligible employees will      vary depending on actual performance over the three-year measurement      period. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|                        | Ameren(a)        | UE              | Genco           | CILCORP(b)      | CILCO          |
|-----------------------------|------------------|-----------------|-----------------|-----------------|----------------|
| June      30, 2008          |             |            |            |            |           |
| Emission      allowances(c) | $       177 | $       52 | $  52 | $       37 | $       1 |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

| (b)   | Includes      fair market value adjustments recorded in connection with Ameren’s      acquisition of CILCORP. |
|-----------------|---------------------------------------------------------------------------------------------------------------------|

| (c)   | Emission      allowances consist of various individual emission allowance certificates      and do not have expiration dates. Emission allowances are charged to fuel      expense as they are used inoperations. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|       | Three      Months |   |   | Six      Months |   |
|------------|-------------------|--------|--------|-----------------|--------|
|       | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Ameren(a)  | $                 | 9      |   |            | $      | 13 |   |   | $ | 16 |   |   | $ | 20 |   |
| UE         |              | -      |   |            |   | 3 |   |   |   | (1 | ) |   |   | - |   |
| Genco      |              | 6      |   |            |   | 8 |   |   |   | 13 |   |   |   | 15 |   |
| CILCORP(b) |              | 3      |   |            |   | 1 |   |   |   | 3 |   |   |   | 3 |   |
| CILCO      |              | -      |   |            |   | (1 | ) |   |   | - |   |   |   | - |   |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

| (b)   | Includes      allowances consumed that were recorded through purchase      accounting. |
|-----------------|----------------------------------------------------------------------------------------|

|    | Three      Months |   |   | Six      Months |   |
|---------|-------------------|--------|--------|-----------------|--------|
|    | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Ameren  | $                 | 38     |   |            | $      | 40 |   |   | $ | 87 |   |   | $ | 82 |   |
| UE      |              | 27     |   |            |   | 28 |   |   |   | 52 |   |   |   | 50 |   |
| CIPS    |              | 3      |   |            |   | 3 |   |   |   | 9 |   |   |   | 8 |   |
| CILCORP |              | 2      |   |            |   | 3 |   |   |   | 7 |   |   |   | 7 |   |
| CILCO   |              | 2      |   |            |   | 3 |   |   |   | 7 |   |   |   | 7 |   |
| IP      |              | 6      |   |            |   | 6 |   |   |   | 19 |   |   |   | 17 |   |

----

----

----

| $1.15      Billion Credit Facility                    |   | Ameren      (Parent) |   |   | UE     |   |   | Genco  |   |   | Total  |   |
|-------------------------------------------------------|--------|----------------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
| June      30, 2008:                                   |   |                 |   |   |   |   |   |   |   |   |   |   |
| Average      daily borrowings outstanding during 2008 |   | $                    | 511    |   |   | $      | 243    |   |   | $      | 82     |   |   | $ | 836 |   |
| Outstanding      short-term debt at period end        |   |                 | 400    |   |   |   | 33     | (a)    |   |   | -      |   |   |   | 433 | (a) |
| Weighted-average      interest rate during 2008       |   |                 | 3.84   | %      |   |   | 3.40   | %      |   |   | 3.97   | %      |   |   | 3.73 | % |
| Peak      short-term borrowings during 2008           |   | $                    | 675    |   |   | $      | 493    |   |   | $      | 150    |   |   | $ | 983 |   |
| Peak      interest rate during 2008                   |   |                 | 7.25   | %      |   |   | 5.65   | %      |   |   | 5.53   | %      |   |   | 7.25 | % |

| (a)   | Includes      issuances under a commercial paper program of $33 million at UE supported      by this facility as of June 30, 2008, all of which is held by an      affiliate. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| 2007      $500 Million Credit Facility                |   | CIPS   |   |   | CILCORP(Parent) |   |   | CILCO      (Parent) |   |   | IP     |   |   | AERG   |   |   | Total  |   |
|-------------------------------------------------------|--------|--------|--------|--------|-----------------|--------|--------|---------------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
| June      30, 2008:                                   |   |   |   |   |            |   |   |                |   |   |   |   |   |   |   |   |   |   |
| Average      daily borrowings outstanding during 2008 |   | $      | -      |   |            | $      | 125    |                |   | $      | 56     |   |   | $      | 153    |   |   | $      | 91 |   |   | $ | 425 |   |
| Outstanding      short-term debt at period end        |   |   | -      |   |            |   | 125    |                |   |   | -      |   |   |   | 175    |   |   |   | 100 |   |   |   | 400 |   |
| Weighted-average      interest rate during 2008       |   |   | -      |   |            |   | 4.81   | %                   |   |   | 4.41   | %      |   |   | 4.54   | %      |   |   | 4.20 | % |   |   | 4.53 | % |
| Peak      short-term borrowings during 2008           |   | $      | -      |   |            | $      | 125    |                |   | $      | 75     |   |   | $      | 200    |   |   | $      | 105 |   |   | $ | 490 |   |
| Peak      interest rate during 2008                   |   |   | -      |   |            |   | 6.66   | %                   |   |   | 6.47   | %      |   |   | 6.15   | %      |   |   | 6.22 | % |   |   | 6.66 | % |
| 2006      $500 Million Credit Facility                |   |   |   |   |            |   |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| June      30, 2008:                                   |   |   |   |   |            |   |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Average      daily borrowings outstanding during 2008 |   | $      | 71     |   |            | $      | 50     |                |   | $      | 11     |   |   | $      | 3      |   |   | $      | 187 |   |   | $ | 322 |   |
| Outstanding      short-term debt at period end        |   |   | 25     |   |            |   | 50     |                |   |   | 75     |   |   |   | -      |   |   |   | 200 |   |   |   | 350 |   |
| Weighted-average      interest rate during 2008       |   |   | 4.64   | %      |            |   | 4.79   | %                   |   |   | 4.79   | %      |   |   | 6.50   | %      |   |   | 4.30 | % |   |   | 4.49 | % |
| Peak      short-term borrowings during 2008           |   | $      | 135    |   |            | $      | 50     |                |   | $      | 75     |   |   | $      | 100    |   |   | $      | 200 |   |   | $ | 465 |   |
| Peak      interest rate during 2008                   |   |   | 6.31   | %      |            |   | 7.01   | %                   |   |   | 5.98   | %      |   |   | 6.50   | %      |   |   | 7.01 | % |   |   | 7.01 | % |

----

----

----

|   |  Required      Interest Coverage Ratio(a) |  Actual      Interest Coverage      Ratio |  Bonds      Issuable(b) |  Required      Dividend Coverage Ratio(c) | Actual      Dividend      Coverage      Ratio | Preferred      Stock      Issuable                                       |
|--------|------------------------------------------------|------------------------------------------------|------------------------------|------------------------------------------------|-----------------------------------------------|--------------------------------------------------------------------------|
| UE     | ≥      2.0                               | 4.0                                            | $   2,757     | ≥      2.5                               | 62.5                                          | $           2,038 |
| CIPS   | ≥      2.0                               | 1.1                                            |        38               | ≥      1.5                               |        0.9                               |          -                                                |
| CILCO  | ≥      2.0(d)                            |   12.9                               | 331                          | ≥      2.5                               | 33.1                                          | 321(e)                                                                   |
| IP     | ≥      2.0                               | 2.3                                            | 792                          | ≥      1.5                               |        0.9                               |          -                                                |

| (a)   | Coverage      required on the annual interest charges on first mortgage bonds      outstanding and to be issued. Coverage is not required in certain cases      when additional first mortgage bonds are issued on the basis of retired      bonds. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Amount      of bonds issuable based on either meeting required coverage ratios or      unfunded property additions, whichever is more restrictive. In addition to      these tests, UE, CIPS, CILCO and IP have the ability to issue bonds based      upon retired bond capacity of $162 million, $38 million, $194 million      and $664 million, respectively, which are included in the amounts      above. No earnings coverage test is required for these    bonds. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)   | Coverage      required on the annual interest charges on all long-term debt (CIPS only)      and the annual dividend on preferred stock outstanding and to be issued,      as required in the respective company’s articles of incorporation. For      CILCO, this ratio must be met for a period of 12 consecutive calendar      months within the 15 months immediately preceding the      issuance. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (d)   | In      lieu of meeting the interest coverage ratio requirement, CILCO may attempt      to meet an earnings requirement of at least 12% of the principal amount of      all mortgage bonds outstanding and to be issued. For the three months and      six months ended June 30, 2008, CILCO had earnings equivalent to at least      41% of the principal amount of all mortgage bonds    outstanding. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (e)   | See      Note 4 – Credit Facilities and Liquidity in the Form 10-K for a discussion      regarding a restriction on the issuance of preferred stock by CILCO under      the 2006 $500 million credit facility and the 2007 $500 million credit      facility. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|           | RequiredInterest      Coverage      Ratio | ActualInterest      Coverage      Ratio | RequiredDebt-to-      Capital      Ratio | ActualDebt-to-      Capital      Ratio |
|----------------|-------------------------------------------|-----------------------------------------|------------------------------------------|----------------------------------------|
| Genco      (a) | ≥1.75(b)                            | 8.9                                     | ≤60%                               | 50%                                    |
| CILCORP(c)     | ≥2.2                                | 3.1                                     | ≤67%                               | 26%                                    |

| (a)   | Interest      coverage ratio relates to covenants regarding certain dividend, principal      and interest payments on certain subordinated intercompany borrowings. The      debt-to-capital ratio relates to a debt incurrence covenant, which      requires an interest coverage ratio of 2.5 for the most recently ended      four fiscal quarters. |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Ratio      excludes amounts payable under Genco’s intercompany note to CIPS and must      be met for both the prior four fiscal quarters and for the succeeding four      six-month periods. |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)   | CILCORP      must maintain the required interest coverage ratio and debt-to-capital      ratio in order to make any payment of dividends or intercompany loans to      affiliates other than to its direct or indirect    subsidiaries. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                                           | Three      Months |   |   | Six      Months |   |
|----------------------------------------------------------------|-------------------|--------|--------|-----------------|--------|
|                                                           | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Ameren:(a)                                                     |              |   |   |            |   |   |   |   |   |   |   |
| Miscellaneous      income:                                     |              |   |   |            |   |   |   |   |   |   |   |
| Interest and dividend      income                              | $                 | 13     |   |            | $      | 14 |   |   | $ | 25 |   |   | $ | 25 |   |
| Allowance for equity funds used      during construction       |              | 5      |   |            |   | - |   |   |   | 11 |   |   |   | - |   |
| Other                                                     |              | 3      |   |            |   | 6 |   |   |   | 6 |   |   |   | 9 |   |
| Total miscellaneous      income                                | $                 | 21     |   |            | $      | 20 |   |   | $ | 42 |   |   | $ | 34 |   |
| Miscellaneous      expense:                                    |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                                                          | $                 | (8     | )      |            | $      | (8 | ) |   | $ | (13 | ) |   | $ | (13 | ) |
| Total miscellaneous      expense                               | $                 | (8     | )      |            | $      | (8 | ) |   | $ | (13 | ) |   | $ | (13 | ) |
| UE:                                                            |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income:                                     |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Interest and dividend      income                              | $                 | 10     |   |            | $      | 8 |   |   | $ | 18 |   |   | $ | 15 |   |
| Allowance for equity funds used      during construction  |              | 5      |   |            |   | - |   |   |   | 11 |   |   |   | - |   |
| Other                                                     |              | -      |   |            |   | 4 |   |   |   | - |   |   |   | 5 |   |
| Total miscellaneous      income                                | $                 | 15     |   |            | $      | 12 |   |   | $ | 29 |   |   | $ | 20 |   |
| Miscellaneous      expense:                                    |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                                                          | $                 | (2     | )      |            | $      | (6 | ) |   | $ | (4 | ) |   | $ | (8 | ) |
| Total miscellaneous      expense                               | $                 | (2     | )      |            | $      | (6 | ) |   | $ | (4 | ) |   | $ | (8 | ) |
| CIPS:                                                          |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income:                                     |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Interest and dividend      income                              | $                 | 2      |   |            | $      | 4 |   |   | $ | 5 |   |   | $ | 8 |   |
| Other                                                     |              | 1      |   |            |   | 1 |   |   |   | 1 |   |   |   | - |   |
| Total miscellaneous      income                                | $                 | 3      |   |            | $      | 5 |   |   | $ | 6 |   |   | $ | 8 |   |

----

----

|                             | Three      Months |   |   | Six      Months |   |
|----------------------------------|-------------------|--------|--------|-----------------|--------|
|                             | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Miscellaneous      expense:      |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                            | $                 | (2     | )      |            | $      | (1 | ) |   | $ | (2 | ) |   | $ | (1 | ) |
| Total miscellaneous      expense | $                 | (2     | )      |            | $      | (1 | ) |   | $ | (2 | ) |   | $ | (1 | ) |
| Genco:                           |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income:       |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                            | $                 | 3      |   |            | $      | 1 |   |   | $ | 5 |   |   | $ | 1 |   |
| Total miscellaneous      income  | $                 | 3      |   |            | $      | 1 |   |   | $ | 5 |   |   | $ | 1 |   |
| CILCORP:                         |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income:       |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Interest income                  | $                 | 1      |   |            | $      | - |   |   | $ | 1 |   |   | $ | 2 |   |
| Total miscellaneous      income  | $                 | 1      |   |            | $      | - |   |   | $ | 1 |   |   | $ | 2 |   |
| Miscellaneous      expense:      |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                            | $                 | (2     | )      |            | $      | (2 | ) |   | $ | (2 | ) |   | $ | (3 | ) |
| Total miscellaneous      expense | $                 | (2     | )      |            | $      | (2 | ) |   | $ | (2 | ) |   | $ | (3 | ) |
| CILCO:                           |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income:       |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Interest income                  | $                 | 1      |   |            | $      | 1 |   |   | $ | 1 |   |   | $ | 2 |   |
| Total miscellaneous      income  | $                 | 1      |   |            | $      | 1 |   |   | $ | 1 |   |   | $ | 2 |   |
| Miscellaneous      expense:      |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                            | $                 | (1     | )      |            | $      | (2 | ) |   | $ | (1 | ) |   | $ | (3 | ) |
| Total miscellaneous      expense | $                 | (1     | )      |            | $      | (2 | ) |   | $ | (1 | ) |   | $ | (3 | ) |
| IP:                              |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Miscellaneous      income:       |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Interest income                  | $                 | 2      |   |            | $      | 2 |   |   | $ | 4 |   |   | $ | 3 |   |
| Other                            |              | 1      |   |            |   | 1 |   |   |   | 2 |   |   |   | 2 |   |
| Total miscellaneous      income  | $                 | 3      |   |            | $      | 3 |   |   | $ | 6 |   |   | $ | 5 |   |
| Miscellaneous      expense:      |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Other                            | $                 | (2     | )      |            | $      | - |   |   | $ | (3 | ) |   | $ | (1 | ) |
| Total miscellaneous      expense | $                 | (2     | )      |            | $      | - |   |   | $ | (3 | ) |   | $ | (1 | ) |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

|                | Three      Months |   |   | Six      Months |   |
|---------------------|-------------------|--------|--------|-----------------|--------|
| Gains      (Losses) | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Ameren              | $                 | (22    | )      |            | $      | 8 |   |   | $ | (30 | ) |   | $ | 13 |   |
| UE                  |              | (3     | )      |            |   | (4 | ) |   |   | (5 | ) |   |   | (2 | ) |

|                        | Three      Months |   |   | Six      Months |   |
|-----------------------------|-------------------|--------|--------|-----------------|--------|
| Gains      (Losses)         | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| SO2      options and swaps: |              |   |   |            |   |   |   |   |   |   |   |
| Ameren                      | $                 | 1      |   |            | $      | 2 |   |   | $ | - |   |   | $ | 6 |   |
| UE                          |              | -      |   |            |   | 1 |   |   |   | - |   |   |   | 5 |   |
| Genco                       |              | -      |   |            |   | 1 |   |   |   | - |   |   |   | 1 |   |
| Coal      options:          |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Ameren                      |              | -      |   |            |   | 1 |   |   |   | - |   |   |   | 2 |   |
| UE                          |              | -      |   |            |   | 1 |   |   |   | - |   |   |   | 2 |   |

----

----

|                                    | Three      Months |   |   | Six      Months |   |
|-----------------------------------------|-------------------|--------|--------|-----------------|--------|
| Gains      (Losses)                     | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Heating      oil options:               |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Ameren                                  |              | 90     |   |            |   | 1 |   |   |   | 109 |   |   |   | 3 |   |
| UE                                      |              | 50     |   |            |   | - |   |   |   | 60 |   |   |   | - |   |
| Genco                                   |              | 24     |   |            |   | - |   |   |   | 29 |   |   |   | - |   |
| CILCORP/CILCO                           |              | 6      |   |            |   | - |   |   |   | 7 |   |   |   | - |   |
| Nonhedge      power swaps and forwards: |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Ameren                                  |              | (6     | )      |            |   | (5 | ) |   |   | - |   |   |   | (4 | ) |
| UE                                      |              | (1     | )      |            |   | (4 | ) |   |   | 2 |   |   |   | (4 | ) |
| Gas      forwards and swaps:            |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Ameren                                  |              | 7      |   |            |   | 2 |   |   |   | 2 |   |   |   | 2 |   |
| UE                                      |              | 4      |   |            |   | 2 |   |   |   | 3 |   |   |   | 2 |   |
| FTRs:                                   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Ameren                                  |              | 9      |   |            |   | - |   |   |   | 14 |   |   |   | - |   |
| UE                                      |              | 10     |   |            |   | - |   |   |   | 12 |   |   |   | - |   |

|                                                     | Ameren(a) |   |   | UE     |   |   | CIPS   |   |   | Genco  |   |   | CILCORP/CILCO |   |   | IP     |   |
|----------------------------------------------------------|-----------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|---------------|--------|--------|--------|--------|
| Derivative      instruments carrying value:              |      |   |   |   |   |   |   |   |   |   |   |   |          |   |   |   |   |
| Current assets                                           | $         | 273    |   |   | $      | 106    |   |   | $      | 38     |   |   | $             | 5      |   |   | $      | 34 |   |   | $ | 75 |   |
| Other assets                                             |      | 128    |   |   |   | 8      |   |   |   | 74     |   |   |          | -      |   |   |   | 44 |   |   |   | 121 |   |
| Current    liabilities                                   |      | 236    |   |   |   | 101    |   |   |   | -      |   |   |          | 1      |   |   |   | 1 |   |   |   | 1 |   |
| Other deferred credits and      liabilities              |      | 42     |   |   |   | 2      |   |   |   | -      |   |   |          | -      |   |   |   | - |   |   |   | - |   |
| Gains      (losses) deferred in accumulated OCI:         |      |   |   |   |   |   |   |   |   |   |   |   |          |   |   |   |   |   |   |   |   |   |   |
| Power forwards(b)                                        |      | (143   | )      |   |   | (33    | )      |   |   | -      |   |   |          | -      |   |   |   | - |   |   |   | - |   |
| Interest rate swaps(c)(d)                           |      | (11    | )      |   |   | -      |   |   |   | -      |   |   |          | (11    | )      |   |   | - |   |   |   | - |   |
| Gas swaps and futures      contracts(e)                  |      | 3      |   |   |   | -      |   |   |   | -      |   |   |          | -      |   |   |   | - |   |   |   | - |   |
| Coal options                                             |      | 8      |   |   |   | 9      |   |   |   | -      |   |   |          | -      |   |   |   | - |   |   |   | - |   |
| Gains      deferred in regulatory assets or liabilities: |      |   |   |   |   |   |   |   |   |   |   |   |          |   |   |   |   |   |   |   |   |   |   |
| Gas      swaps and futures contracts(e)                  |      | 164    |   |   |   | 18     |   |   |   | 30     |   |   |          | -      |   |   |   | 38 |   |   |   | 78 |   |
| Financial      contracts(f)                              |      | -      |   |   |   | -      |   |   |   | 81     |   |   |          | -      |   |   |   | 40 |   |   |   | 117 |   |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

| (b)   | Represents      the mark-to-market value for the hedged portion of electricity price      exposure for periods of up to three years, including losses of $116      million over the next 12 months. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)   | Includes      a gain associated with interest rate swaps at Genco that were a partial      hedge of the interest rate on debt issued in June 2002. The swaps cover      the first 10 years of debt that has a 30-year maturity, and the gain in      OCI is amortized over a 10-year period that began in June 2002. The      carrying value at June 30, 2008, was $2million. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (d)   | Includes      a loss associated with interest rate swaps at Genco. The swaps were      executed during the fourth quarter of 2007 as a partial hedge of interest      rate risks associated with Genco’s April 2008 debt issuance. The      cumulative loss on the interest rate swaps is being amortized over a      10-year period that began in April 2008. The carrying value at June 30,      2008 was a loss of $13 million. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (e)   | Represents      gains associated with natural gas swaps and futures contracts. The swaps      and futures contracts are a partial hedge of our natural gas requirements      through October 2011. |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (f)   | Current      amounts deferred as regulatory liabilities include $21 million at CIPS,      $10 million at CILCO, and $30 million at IP that were recorded in other      current liabilities at June 30,2008. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|          |                                                                                                                                                                                                   | Quoted      Prices inActive      Markets for Identified Assets(Level      1) |  Significant      Other Observable Inputs(Level      2) |  Significant      Other Unobservable      Inputs(Level      3) |    Total      |
|---------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------|--------------------------------------------------------------|--------------------------------------------------------------------------|------------------------------|
| Assets:       |                                                                                                                                                                                                   |                                                                         |                                                         |                                                                     |                         |
| Ameren(a)     | Derivative      assets(b)                                  |        $        3               | $           90                      |  $     308                                 | $         401 |
|          | Nuclear      Decommissioning                                                                                                                                                                           |                                                                         |                                                         |                                                                     |                         |
|          | Trust      Fund(c)                                         | 208                                                                          | 84                                                           | 1                                                                        |        293              |
| UE            | Derivative      assets                                     |  -                                                                      | 66                                                           |        48                                                           |        114              |
|          | Nuclear      Decommissioning                                                                                                                                                                           |                                                                         |                                                         |                                                                     |                         |
|          | Trust      Fund(c)                                                        | 208                                                                          | 84                                                           | 1                                                                        |   293              |
| CIPS          | Derivative      assets(b)                                  |  -                                                                      |         -                                          | 112                                                                      |        112              |
| Genco         | Derivative      assets(b)                                  |  -                                                                      |         -                                          | 5                                                                        |        5                |
| CILCORP/CILCO | Derivative      assets(b)                                  |  (d)                                                                    |         -                                          |        78                                                           | 78                           |
| IP            | Derivative      assets(b)                                  |  -                                                                      |         -                                          | 196                                                                      |        196              |
| Liabilities:  |                                                                                                                                                                                                   |                                                                         |                                                         |                                                                     |                         |
| Ameren(a)     | Derivative      liabilities(b)                             |         $       1               |  $    171                           |        $    106                                 | $         278 |
| UE            | Derivative      liabilities(b)                             |  -                                                                      |  95                                                     | 8                                                                        |        103              |
| CIPS          | Derivative      liabilities(b)                             |  -                                                                      |         -                                          |  (d)                                                                |         (d)        |
| Genco         | Derivative      liabilities(b)                             |  (d)                                                                    |         -                                          | 1                                                                        |        1                |

----

|   |   | Quoted      Prices inActive      Markets for Identified Assets(Level      1)  |        Significant      Other Observable Inputs(Level      2) |        Significant      Other Unobservable      Inputs(Level      3) |        Total |
|--------|--------|------------------------------------------------------------------------------------|--------------------------------------------------------------------|--------------------------------------------------------------------------------|-------------------|

| CILCORP/CILCO | Derivative      liabilities(b)                             | - |   - | 1 | 1 |
|---------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|----------|---|---|
| IP            | Derivative      liabilities(b)                             | - |   - | 1 | 1 |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

| (b)   | The      derivative asset and liability balances are presented net of counterparty      credit considerations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

| (c)   | Balance      excludes ($9) million of receivables, payables, and accrued income,      net. |
|-----------------|--------------------------------------------------------------------------------------------|

| (d)   | Less      than $1 million. |
|-----------------|----------------------------|

|                              |                                                                                                         |   |            |   |   |                                        |   |   |        |   |   |             |   |   |       |   |   |           |   |   | Change      in      |   |
|-----------------------------------|--------------------------------------------------------------------------------------------------------------|--------|-----------------|--------|--------|---------------------------------------------|--------|--------|-------------|--------|--------|------------------|--------|--------|------------|--------|--------|----------------|--------|--------|---------------------|--------|
|                              |                                                                                                         |   |            |   |   |                                        |   |   |        |   |   |             |   |   | Total      |   |   |           |   |   |                |   |   |   |   |   | Unrealized |   |
|                              |                                                                                                         |   |            |   |   | Realized and Unrealized Gains      (Losses) |   |   | Realized    |   |   | Purchases,       |   |   |       |   |   |           |   |   | Gains      (Losses) |   |
|                              |                                                                                                         |   | Beginning       |   |   |                                        |   |   |        |   |   | Included      in |   |   | and        |   |   | Issuances,     |   |   | Net                 |   |   | Ending |   |   | Related      to |   |
|                              |                                                                                                         |   | Balance      at |   |   |                                        |   |   |        |   |   | Regulatory       |   |   | Unrealized |   |   | and      Other |   |   | Transfers      In   |   |   | Balance      at |   |   | Assets/Liabilities |   |
|                              |                                                                                                         |   | April      1,   |   |   | Included      in                            |   |   | Included    |   |   | Assets/          |   |   | Gains      |   |   | Settlements,   |   |   | and/or      (Out)   |   |   | June      30, |   |   | Still      Held at |   |
|                              |                                                                                                         |   | 2008            |   |   | Earnings(a)                                 |   |   | In      OCI |   |   | Liabilities      |   |   | (Losses)   |   |   | Net            |   |   | of      Level 3     |   |   | 2008 |   |   | June      30, 2008 |   |
|  Net      Derivative         | Ameren                  |   | $               | 59     |   |                                        | $      | 87     |        |   | $      | (25              | )      |   | $          | 109    |   |           | $      | 171    |                |   | $ | (29 | ) |   | $ | 1 |   |   | $ | 202 |   |   | $ | 122 |   |
|    Contracts       | UE                      |   |            | 15     |   |                                        |   | 8      |        |   |   | 3                |   |   |       | 12     |   |           |   | 23     |                |   |   | 2 |   |   | (b | )  |   |   | 40 |   |   |   | 18 |   |
|                              | CIPS                    |   |            | 58     |   |                                        |   | -      |        |   |   | -                |   |   |       | 56     |   |           |   | 56     |                |   |   | (2 | ) |   |   | - |   |   |   | 112 |   |   |   | 56 |   |
|                              | Genco                   |   |            | 1      |   |                                        |   | 4      |        |   | (b     | )           |   |   | -          |   |   |           | 4      |   |                |   | (1 | ) |   |   | - |   |   |   | 4 |   |   |   | 4 |   |
|                              | CILCORP/CILCO                                                                                                |   |            | 40     |   |                                        |   | (1     | )           |   |   | -                |   |   |       | 42     |   |           |   | 41     |                |   |   | (4 | ) |   |   | - |   |   |   | 77 |   |   |   | 42 |   |
|                              | IP                      |   |            | 102    |   |                                        |   | -      |        |   |   | -                |   |   |       | 97     |   |           |   | 97     |                |   |   | (4 | ) |   |   | - |   |   |   | 195 |   |   |   | 101 |   |
|  Nuclear                     | Ameren                  |   | $               | 2      |   |                                        | $      | -      |        |   | $      | -                |   |   | $          | -      |   |           | $      | -      |                |   | $ | (1 | ) |   | $ | - |   |   | $ | 1 |   |   | $ | - |   |
|    Decommissioning | UE                      |   |            | 2      |   |                                        |   | -      |        |   |   | -                |   |   |       | -      |   |           |   | -      |                |   |   | (1 | ) |   |   | - |   |   |   | 1 |   |   |   | - |   |
|    Trust      Fund |                                                                                                         |   |            |   |   |                                        |   |   |        |   |   |             |   |   |       |   |   |           |   |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

| (a) | Net      gains and losses on power options are recorded in Operating Revenues –      Electric, while net gains and losses on coal, heating oil, and SO2options and swaps are recorded as Operating Expenses –      Fuel. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Less      than $1 million. |
|-----------------|----------------------------|

|                              |                                                                                                         |   |            |   |   |                                        |   |   |        |   |   |             |   |   |       |   |   |           |   |   | Change      in      |   |
|-----------------------------------|--------------------------------------------------------------------------------------------------------------|--------|-----------------|--------|--------|---------------------------------------------|--------|--------|-------------|--------|--------|------------------|--------|--------|------------|--------|--------|----------------|--------|--------|---------------------|--------|
|                              |                                                                                                         |   |            |   |   |                                        |   |   |        |   |   |             |   |   | Total      |   |   |           |   |   |                |   |   |   |   |   | Unrealized |   |
|                              |                                                                                                         |   |            |   |   | Realized and Unrealized Gains      (Losses) |   |   | Realized    |   |   | Purchases,       |   |   |       |   |   |           |   |   | Gains      (Losses) |   |
|                              |                                                                                                         |   | Beginning       |   |   |                                        |   |   |        |   |   | Included      in |   |   | and        |   |   | Issuances,     |   |   | Net                 |   |   | Ending |   |   | Related      to |   |
|                              |                                                                                                         |   | Balance      at |   |   |                                        |   |   |        |   |   | Regulatory       |   |   | Unrealized |   |   | and      Other |   |   | Transfers      In   |   |   | Balance      at |   |   | Assets/Liabilities |   |
|                              |                                                                                                         |   | January      1, |   |   | Included      in                            |   |   | Included    |   |   | Assets/          |   |   | Gains      |   |   | Settlements,   |   |   | and/or      (Out)   |   |   | June      30, |   |   | Still      Held at |   |
|                              |                                                                                                         |   | 2008            |   |   | Earnings(a)                                 |   |   | In      OCI |   |   | Liabilities      |   |   | (Losses)   |   |   | Net            |   |   | of      Level 3     |   |   | 2008 |   |   | June      30, 2008 |   |
|  Net      Derivative         | Ameren                  |   | $               | 19     |   |                                        | $      | 93     |        |   | $      | (59              | )      |   | $          | 178    |   |           | $      | 212    |                |   | $ | (19 | ) |   | $ | (10 | ) |   | $ | 202 |   |   | $ | 75 |   |
|    Contracts       | UE                      |   |            | 3      |   |                                        |   | 10     |        |   |   | 10               |   |   |       | 19     |   |           |   | 39     |                |   |   | (3 | ) |   |   | 1 |   |   |   | 40 |   |   |   | 14 |   |
|                              | CIPS                    |   |            | 38     |   |                                        |   | -      |        |   |   | -                |   |   |       | 75     |   |           |   | 75     |                |   |   | (1 | ) |   |   | - |   |   |   | 112 |   |   |   | 66 |   |
|                              | Genco                   |   |            | 1      |   |                                        |   | 4      |        |   | (b     | )           |   |   | -          |   |   |           | 4      |   |                |   | (1 | ) |   |   | - |   |   |   | 4 |   |   |   | 4 |   |
|                              | CILCORP/CILCO                                                                                                |   |            | 21     |   |                                        |   | (1     | )           |   | (b     | )           |   |   | 62         |   |   |           | 61     |   |                |   | (5 | ) |   |   | - |   |   |   | 77 |   |   |   | 54 |   |
|                              | IP                      |   |            | 55     |   |                                        |   | -      |        |   |   | -                |   |   |       | 140    |   |           |   | 140    |                |   | (b | )  |   |   | - |   |   |   | 195 |   |   |   | 132 |   |
|  Nuclear                     | Ameren                  |   | $               | 5      |   |                                        | $      | -      |        |   | $      | -                |   |   | $          | -      |   |           | $      | -      |                |   | $ | (4 | ) |   | $ | - |   |   | $ | 1 |   |   | $ | - |   |
|    Decommissioning | UE                      |   |            | 5      |   |                                        |   | -      |        |   |   | -                |   |   |       | -      |   |           |   | -      |                |   |   | (4 | ) |   |   | - |   |   |   | 1 |   |   |   | - |   |
|    Trust      Fund |                                                                                                         |   |            |   |   |                                        |   |   |        |   |   |             |   |   |       |   |   |           |   |   |                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

| (a)   | Net      gains and losses on power options are recorded in Operating Revenues –      Electric, while net gains and losses on coal, heating oil, and SO2      options and swaps are recorded as Operating Expenses –    Fuel. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Less      than $1 million. |
|-----------------|----------------------------|

----

|                                                  | Three      Months           | Six      Months       |
|-------------------------------------------------------|-----------------------------|-----------------------|
|                                                  | 2008                        | 2007                  | 2008 | 2007 |
| Genco      sales to  Marketing      Company |  3,529                 | 3,838                 | 7,941 | 7,957 |
| AERG      sales to  Marketing      Company  |  1,610                 | 1,154                 | 3,313 | 2,642 |
| Marketing      Company  sales      to CIPS  |          472 |         562 | 1,094 | 1,181 |
| Marketing      Company  sales      to CILCO | 223                         |         285 |         480 |         573 |
| Marketing      Company  sales      to IP    | 698                         |         874 | 1,502 | 1,700 |

----

|   | June      30, 2008(a) |   |   | December      31, 2007 |   |
|--------|-----------------------|--------|--------|------------------------|--------|
| CIPS   | $                     | 49     |   |                   | $      | 1 |   |
| CILCO  |                  | 24     |   |                   | (b     | )  |
| IP     |                  | 74     |   |                   |   | 1 |   |
| Total  | $                     | 147    |   |                   | $      | 2 |   |

| (a)   | As      of July 23, 2008, the collateral was returned due to changes in power      prices, and as a result the cash is no longer restricted as      collateral. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Amount      is less than $1 million. |
|-----------------|--------------------------------------|

----

|                                                                                |   |   | Three      Months |   |   | Six      Months |
|-------------------------------------------------------------------------------------|--------|--------|-------------------|--------|--------|-----------------|
| Agreement                                                                           |   |   | UE                |   |   | CIPS            |   |   | Genco |   |   | CILCORP(a) |   |   | IP |   |   | UE |   |   | CIPS |   |   | Genco |   |   | CILCORP(a) |   |   | IP |   |
|                                                                                |   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Operating      Revenues:                                                            |   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Genco      and AERG power supply agreements with                                    | 2008   |   | $                 | (b)    |   |            | $ | (b) |   |   | $ | 199 |   |   | $ | 70 |   |   | $ | (b) |   |   | $ | (b) |   |   | $ | (b) |   |   | $ | 425 |   |   | $ | 153 |   |   | $ | (b) |   |
| Marketing      Company                                                              | 2007   |   | (b)               |   |   | (b)             |   |   |   | 182 |   |   |   | 62 |   |   | (b) |   |   | (b) |   |   | (b) |   |   |   | 393 |   |   |   | 134 |   |   | (b) |   |
| Ancillary      service agreement with CIPS,                                         | 2008   |   |              | 3      |   |            | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |   |   | 6 |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |
| CILCO      and IP                                                                   | 2007   |   |              | 4      |   |            | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |   |   | 8 |   |   | (b) |   |   | (b) |   |   | (b) |   |   |  (b) |   |
| UE      and Genco gas transportation                                                | 2008   |   | (c)               |   |   | (b)             |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (c) |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |
| agreement                                                                           | 2007   |   | (c)               |   |   | (b)             |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (c) |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |
| Total      Operating                                                                | 2008   |   | $                 | 3      |   |            | $ | (b) |   |   | $ | 199 |   |   | $ | 70 |   |   | $ | (b) |   |   | $ | 6 |   |   | $ | (b) |   |   | $ | 425 |   |   | $ | 153 |   |   | $ | (b)  |   |
| Revenues                                                                            | 2007   |   |              | 4      |   |            | (b) |   |   |   | 182 |   |   |   | 62 |   |   | (b) |   |   |   | 8 |   |   | (b) |   |   |   | 393 |   |   |   | 134 |   |   | (b) |   |
| Fuel      and Purchased Power:                                                      |   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| CIPS,      CILCO and IPagreements with Marketing ompany (2006      auction and |   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| energy      and capacity                                                            | 2008   |   | $                 | (b)    |   |            | $ | 31 |   |   | $ | (b) |   |   | $ | 15 |   |   | $ | 46 |   |   | $ | (b) |   |   | $ | 72 |   |   | $ | (b) |   |   | $ | 32 |   |   | $ | 99 |   |
| agreements)                                                                         | 2007   |   | (b)               |   |   |            | 36 |   |   | (b) |   |   |   | 19 |   |   |   | 57 |   |   | (b) |   |   |   | 78 |   |   | (b) |   |   |   | 38 |   |   |   | 112 |   |
| Ancillary      service                                                              | 2008   |   | (b)               |   |   |            | 1 |   |   | (b) |   |   | (c) |   |   |   | 2 |   |   | (b) |   |   |   | 2 |   |   | (b) |   |   |   | 1 |   |   |   | 3 |   |
| agreement      with UE                                                              | 2007   |   | (b)               |   |   |            | 2 |   |   | (b) |   |   | (c) |   |   |   | 2 |   |   | (b) |   |   |   | 3 |   |   | (b) |   |   |   | 1 |   |   |   | 4 |   |
| Ancillary      service agreement with                                               | 2008   |   | (b)               |   |   |            | 2 |   |   | (b) |   |   |   | 1 |   |   |   | 3 |   |   | (b) |   |   |   | 4 |   |   | (b) |   |   |   | 2 |   |   |   | 6 |   |
| Marketing      Company                                                              | 2007   |   | (b)               |   |   |            | 1 |   |   | (b) |   |   | (c) |   |   |   | 1 |   |   | (b) |   |   |   | 2 |   |   | (b) |   |   |   | 1 |   |   |   | 2 |   |
| Executory      tolling agreement with                                               | 2008   |   | (b)               |   |   | (b)             |   |   | (b) |   |   |   | 9 |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |   |   | 22 |   |   | (b) |   |
| Medina      Valley                                                                  | 2007   |   | (b)               |   |   | (b)             |   |   | (b) |   |   |   | 8 |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |   |   | 20 |   |   | (b) |   |
| UE      and Genco gas transportation                                                | 2008   |   | (b)               |   |   | (b)             |   |   | (c) |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (c) |   |   | (b) |   |   | (b) |   |
| agreement                                                                           | 2007   |   | (b)               |   |   | (b)             |   |   | (c) |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (b) |   |   | (c) |   |   | (b) |   |   | (b) |   |
| Total      Fuel and                                                                 |   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Purchased                                                                           | 2008   |   | $                 | (b)    |   |            | $ | 34 |   |   | $ | (c) |   |   | $ | 25 |   |   | $ | 51 |   |   | $ | (b) |   |   | $ | 78 |   |   | $ | (c) |   |   | $ | 57 |   |   | $ | 108 |   |
| Power                                                                          | 2007   |   | (b)               |   |   |            | 39 |   |   | (c) |   |   |   | 27 |   |   |   | 60 |   |   | (b) |   |   |   | 83 |   |   | (c) |   |   |   | 60 |   |   |   | 118 |   |
| Other      Operating Expense:                                                       |   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ameren      Services support services                                               | 2008   |   | $                 | 38     |   |            | $ | 15 |   |   | $ | 8 |   |   | $ | 15 |   |   | $ | 23 |   |   | $ | 74 |   |   | $ | 29 |   |   | $ | 15 |   |   | $ | 29 |   |   | $ | 44 |   |
| agreement                                                                           | 2007   |   |              | 35     |   |            |   | 13 |   |   |   | 6 |   |   |   | 13 |   |   |   | 20 |   |   |   | 74 |   |   |   | 27 |   |   |   | 13 |   |   |   | 28 |   |   |   | 42 |   |
| Ameren      Energy, Inc. support services                                           | 2008   |   | (e)               |   |   | (e)             |   |   | (e) |   |   | (e) |   |   | (e) |   |   | (e) |   |   | (e) |   |   | (e) |   |   | (e) |   |   | (e) |   |
| agreement                                                                           | 2007   |   |              | 2      |   |            | (b) |   |   | (c) |   |   | (b) |   |   | (b) |   |   |   | 5 |   |   | (b) |   |   | (c) |   |   | (b) |   |   | (b) |   |
| AFS      support services                                                           | 2008   |   |              | 1      |   |            |   | 1 |   |   | (c) |   |   |   | 1 |   |   |   | 1 |   |   |   | 3 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
| agreement                                                                      | 2007   |   |              | 1      |   |            |   | 1 |   |   | (c) |   |   | (c) |   |   |   | 1 |   |   |   | 3 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
| Insurance                                                                           | 2008   |   |              | 3      |   |            | (b) |   |   |   | 1 |   |   |   | 1 |   |   | (b) |   |   |   | 5 |   |   | (b) |   |   |   | 2 |   |   |   | 2 |   |   | (b) |   |
| premiums(d)                                                                    | 2007   |   |              | 5      |   |            | (b) |   |   |   | 1 |   |   |   | 1 |   |   | (b) |   |   |   | 9 |   |   | (b) |   |   |   | 2 |   |   |   | 1 |   |   | (b) |   |
| Total      Other Operating                                                          | 2008   |   | $                 | 42     |   |            | $ | 16 |   |   | $ | 8 |   |   | $ | 17 |   |   | $ | 24 |   |   | $ | 82 |   |   | $ | 30 |   |   | $ | 18 |   |   | $ | 32 |   |   | $ | 45 |   |
| Expenses                                                                       | 2007   |   |              | 43     |   |            |   | 14 |   |   |   | 7 |   |   |   | 14 |   |   |   | 21 |   |   |   | 91 |   |   |   | 28 |   |   |   | 16 |   |   |   | 30 |   |   |   | 43 |   |

----

|      |   |   | Three      Months |   |   | Six      Months |
|-----------|--------|--------|-------------------|--------|--------|-----------------|
| Agreement |   |   | UE                |   |   | CIPS            |   |   | Genco |   |   | CILCORP(a) |   |   | IP |   |   | UE |   |   | CIPS |   |   | Genco |   |   | CILCORP(a) |   |   | IP |

| Interest      expense on commercial paper | 2008 |   | $      | (c) |   | $   | (b)    |   |   | $      | (b)    |   |   | $      | (b) |   |   | $      | (b) |   |   | $   | 1      |   |   | $      | (b)    |   |   | $      | (b) |   |   | $ | (b) |   |   | $ | (b)  |   |
|-------------------------------------------|------|--------|--------|-----|--------|-----|--------|--------|--------|--------|--------|--------|--------|--------|-----|--------|--------|--------|-----|--------|--------|-----|--------|--------|--------|--------|--------|--------|--------|--------|-----|--------|--------|---|-----|--------|--------|---|-----------|--------|
| held      by affiliate(f)                 | 2007 |   |   | 1   |   | (b) |   |   | (b)    |   |   | (b)    |   |   | (b) |   |   |   | 2   |   |   | (b) |   |   | (b)    |   |   | (b)    |   |   | (b) |   |

| Interest      expense (income) from money | 2008 |   |   | - |   |   | (c) |   |   | (c)    |   |   | (c)    |   |   | (c)    |   |   |   | -      |   |   | (c)    |   |   | (c)    |   |   | (c)    |   |   | (c)    |   |
|-------------------------------------------|------|--------|--------|---|--------|--------|-----|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
| pool      borrowings (advances)           | 2007 |   |   | - |   |   | (c) |   |   |   | 2      |   |   | (c)    |   |   | (c)    |   |   |   | -      |   |   | (c)    |   |   |   | 4      |   |   | (c)    |   |   |          (c) |   |

| (a)   | Amounts      represent CILCORP and CILCOactivity. |
|-----------------|---------------------------------------------------|

| (b)   | Not      applicable.                                                                                                         |
|-----------------|------------------------------------------------------------------------------------------------------------------------------|
| (c)             | Amount      less than $1 million.                                                                                            |
| (d)             | Represents      insurance expenses on affiliate policies for replacement power, property      damage and terrorism coverage. |
| (e)             | Ameren      Energy, Inc. was eliminated December 31, 2007 through an internal      reorganization.                           |
| (f)             | See      Note 3 - Short-term Borrowings and Liquidity for more    information.                                               |

| Type      and Source of Coverage                    | Maximum      Coverages                                             | Maximum      Assessments for Single Incidents                        |
|-----------------------------------------------------|--------------------------------------------------------------------|----------------------------------------------------------------------|
| Public      liability and nuclear worker liability: |                                                               |                                                                 |
| American Nuclear      Insurers                      | $        300(a)            | $           - |
| Pool participation                                  |  10,461                                                       |  101(b)                                                         |
|                                                | $   10,761(c)                                       | $       101                       |
| Property      damage:                               |                                                               |                                                                 |
| Nuclear Electric Insurance      Ltd.                | $     2,750(d)                            | $        24                  |
| Replacement      power:                             |                                                               |                                                                 |
| Nuclear Electric Insurance      Ltd.                | $             490(e)            | $           9 |
| Energy Risk Assurance      Company                  | $               64(f) | $           - |

| (a) | Provided      through mandatory participation in an industry-wide retrospective premium      assessment program. |
|-----|------------------------------------------------------------------------------------------------------------------|

| (b) | Retrospective      premium under the Price-Anderson liability provisions of the Atomic Energy      Act of 1954, as amended. This is subject to retrospective assessment      with respect to a covered loss in excess of $300 million from an incident      at any licensed U.S. commercial reactor, payable at $15 million per year. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)   | Limit      of liability for each incident under Price-Anderson. This limit is subject      to change to account for the effects of inflation and changes in the      number of licensed reactors. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (d)   | Provides      for $500 million in property damage and decontamination, excess property      insurance, and premature decommissioning coverage up to $2.25 billion      for losses in excess of the $500 million primary  coverage. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (e)   | Provides      the replacement power cost insurance in the event of a prolonged      accidental outage at a nuclear plant. Weekly indemnity of $4.5 million for      52 weeks, which commences after the first eight weeks of an outage, plus      $3.6 million per week for 71.1 weeks  thereafter. |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (f)   | Provides      the replacement power cost insurance in the event of a prolonged      accidental outage at a nuclear plant. The coverage commences after the      first 52 weeks of insurance coverage from Nuclear Electric Insurance Ltd.      and is for a weekly indemnity of $900,000 for 71 weeks in excess of the      $3.6 million per week set forth above. Energy Risk Assurance Company is an      affiliate and has reinsured this coverage with third-party insurance      companies. See Note 8 – Related Party Transactions for more information on      this affiliate transaction. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|          |   | 2008   |   |   | 2009   |   |   | 2010   |   |   | 2011 |   |   | 2012   |   |   | Thereafter |   |
|---------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|------|--------|--------|--------|--------|--------|------------|--------|
| Ameren(a)     |   | $      | 276    |   |   | $      | 360    |   |   | $      | 206  |   |   | $      | 77     |   |       | $      | - |   |   | $ | - |   |
| UE            |   |   | 162    |   |   |   | 246    |   |   |   | 153  |   |   |   | 77     |   |       |   | - |   |   |   | - |   |
| Genco         |   |   | 53     |   |   |   | 63     |   |   |   | 24   |   |   |   | -      |   |       |   | - |   |   |   | - |   |
| CILCORP/CILCO |   |   | 26     |   |   |   | 18     |   |   |   | 11   |   |   |   | -      |   |       |   | - |   |   |   | - |   |

|   |   | 2008   |   |   | 2009   |   |   | 2010   |   |   | 2011 |   |   | 2012   |   |   | Thereafter |   |
|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|------|--------|--------|--------|--------|--------|------------|--------|
| Ameren |   | $      | 40     |   |   | $      | 68     |   |   | $      | 74   |   |   | $      | 52     |   |       | $      | 67 |   |   | $ | 232 |   |
| UE     |   |   | 40     |   |   |   | 68     |   |   |   | 74   |   |   |   | 52     |   |       |   | 67 |   |   |   | 232 |   |

|   |   | 2008   |   |   | 2009   |   |   | 2010   |   |   | 2011 |   |   | 2012   |   |   | Thereafter |   |
|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|------|--------|--------|--------|--------|--------|------------|--------|
| Ameren |   | $      | -      |   |   | $      | 14     |   |   | $      | 44   |   |   | $      | -      |   |       | $      | 44 |   |   | $ | - |   |
| UE     |   |   | -      |   |   |   | 14     |   |   |   | 44   |   |   |   | -      |   |       |   | 44 |   |   |   | - |   |

|    |   |  Ameren |   |   | CIPS   |   |   | CILCO(IllinoisRegulated) |   |   | IP  |   |   | Genco  |   |   | CILCO(AERG) |   |
|---------|--------|--------------|--------|--------|--------|--------|--------|--------------------------|--------|--------|-----|--------|--------|--------|--------|--------|-------------|--------|
| 2008(a) |   | $            | 21.6   |   |   | $      | 3.3    |                     |   | $      | 1.5 |   |   | $      | 4.5    |   |        | $      | 8.5 |   |   | $ | 3.8 |   |
| 2009(a) |   |         | 25.2   |   |   |   | 3.5    |                     |   |   | 1.8 |   |   |   | 4.7    |   |        |   | 10.5 |   |   |   | 4.7 |   |
| 2010(a) |   |         | 2.0    |   |   |   | 0.3    |                     |   |   | 0.1 |   |   |   | 0.4    |   |        |   | 0.8 |   |   |   | 0.4 |   |
| Total   |   | $            | 48.8   |   |   | $      | 7.1    |                     |   | $      | 3.4 |   |   | $      | 9.6    |   |        | $      | 19.8 |   |   | $ | 8.9 |   |

----

----

|   | 2008                                                                                                                             | 2009      – 2012                                                                                                                                                                                    | 2013      - 2017                                                                                                                                                                                                                                 | Total                                                                                                                                                                                                                                                                 |
|--------|----------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| UE(a)  |               $   255                            |                            $    215 - $    295                          |                           $   1,300 - $  1,700                                                                                | $       1,770 -  $  2,250                                                                                                                                                                                                                              |
| Genco  |                         300            |                                955 -    1,210                 |                                   45  -              70      | 1,300      -      1,580                                                                                                                                                                                                                      |
| CILCO  |                    170                 |                                380 -       500 |                                   70       -         90 |                                        620 -              760 |
| EEI    |                      30 |                                260 -       350 |                                   20       -         30 |                                        310      -         410 |
| Ameren |                    $   755                            |                            $ 1,810 - $ 2,355                                                     |                           $   1,435 - $  1,890                                                                      | $       4,000 -  $ 5,000                                                                                                                                                                                                                     |

| (a)   | UE’s      expenditures are expected to be recoverable in rates over      time. |
|-----------------|--------------------------------------------------------------------------------------|

|                                                                                                                                                     | SO2(a)      | NOx(b)            | Book      Value(c)                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|-------------------|---------------------------------------------|
| Ameren                                                                                                                                                   |  3.129 | 32,635            | $           177(d) |
| UE                          |  1.716 | 11,919            | 52                                          |
| Genco                                                                                                                                                    |  0.735 | 10,522            | 52                                          |
| CILCORP                                                                                                                                                  |  0.346 |   1,312 | 37                                          |
| CILCO      (AERG)                                                                                                                                        |  0.346 |   1,312 | 1                                           |
| EEI                                                                                                                                                      |  0.332 |   8,882 | 9                                           |

| (a)   | Vintages      are from 2008 to 2018. Each company possesses additional allowances for      use in periods beyond 2018. Units are in millions of SO2      allowances (currently one allowance equals one ton    emitted). |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Vintage      is 2008. Units are in NOx      allowances (one allowance equals one ton  emitted). |
|-----------------|-------------------------------------------------------------------------------------------------|

| (c)   | The      book value represents SO2 and      NOx      emission allowances for use in periods through  2031. |
|-----------------|------------------------------------------------------------------------------------------------------------|

| (d)   | Includes      value assigned to EEI allowances as a result of purchase accounting of $26      million. |
|-----------------|--------------------------------------------------------------------------------------------------------|

----

| ·   | seeking      partners to develop wind energy for our generation    portfolio; |
|--------------------|-------------------------------------------------------------------------------|

| ·  | participating      in DOE-sponsored research into the feasibility of sequestering CO2      underground in the Illinois basin, the Plains sequestration partnership,      and a Missouri sequestration project to be conducted in Southwest      Missouri; |
|--------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | increasing      the operating efficiency and capacity of our nuclear and hydroelectric      plants to provide more energy to offset fossil  generation; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | participating      in the PowerTree Carbon Company, LLC, whose purpose is to reforest acreage      in the lower Mississippi valley to sequester  carbon; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | using      coal combustion by-products as a direct replacement for cement, thereby      reducing carbon emissions at cementkilns; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------|

| ·   | participating      in a DOE and State of Missouri Department of Natural Resources project      evaluating Missouri wind resources for the next generation of wind      turbines, |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | funding      a project investigating opportunities to reduce nitrous oxide (N2O),      a potent greenhouse gas from agricultural usage and tracking those      reductions; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | participating      in “Illinois Clean Energy Community Foundation”, a program that supports      energy efficiency, promotes renewable energy, and provides educational      opportunities; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | establishing      Pure Power, UE’s voluntary renewable energy program that allows UE’s      electric customers to support development of wind farms and other      renewable energy facilities in the Midwest;and |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | purchasing      Renewable Energy Credits – the Ameren Illinois Utilities purchased 415,000      renewable energy credits in April2008. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------|

----

----

----

|      |                 | Specifically      Named as Defendant |
|-----------|----------------------|--------------------------------------|
|      | Total(a)             | Ameren                               | UE | CIPS | Genco | CILCO | IP |
| Filed     | 366                  | 33                                   | 202 | 152 | 2 | 50 | 181 |
| Settled   | 126                  | -                                    |        67 |        56 | - | 19 |  64 |
| Dismissed | 164                  | 29                                   | 108 |        59 | 2 | 17 |  79 |
| Pending   |         76 |  4                              |        27 |        37 | - | 14 |  38 |

| (a)   | Totals      do not equal to the sum of the subsidiary unit lawsuits because some of      the lawsuits name multiple Ameren entities as  defendants. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|

----

|                                                                                                                                                       |   | Three      Months |   |   | Six      Months |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|--------|--------|-----------------|--------|
|                                                                                                                                                       |   | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Ameren:(a)                                                                                                                                                 |   |              |   |   |            |   |   |   |   |   |   |   |
| Net      income                                                                                                                                            |   | $                 | 206    |   |            | $      | 143 |   |   | $ | 344 |   |   | $ | 266 |   |
| Unrealized      net gain (loss) on derivative hedging instruments, net of      taxes(benefit)      of  $(27), $12, $(63) and $(3), respectively       |   |              | (48    | )      |            |   | 23 |   |   |   | (111 | ) |   |   | (5 | ) |
| Reclassification      adjustments for derivative (gain) loss included in net income,      net of taxes (benefit) of $(3), $2, $(6) and $9,    respectively |   |              | 5      |   |            |   | (2 | ) |   |   | 11 |   |   |   | (15 | ) |
| Adjustment      to pension and benefit obligation, net of taxes (benefit) of $3,      $(1),      $1 and $(2), respectively                                 |   |              | (4     | )      |            |   | (2 | ) |   |   | (2 | ) |   |   | - |   |
| Total comprehensive income, net      of taxes                                                                                                              |   | $                 | 159    |   |            | $      | 162 |   |   | $ | 242 |   |   | $ | 246 |   |
| UE:                                                                                                                                                        |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Net      income                                                                                                                                            |   | $                 | 124    |   |            | $      | 81 |   |   | $ | 188 |   |   | $ | 114 |   |
| Unrealized      net gain (loss) on derivative hedging instruments, net of taxes      (benefit)      of $(4), $2, $(11) and $(1), respectively              |   |              | (6     | )      |            |   | 4 |   |   |   | (17 | ) |   |   | (1 | ) |
| Reclassification      adjustments for derivative (gain) loss included in net income,      net of taxes (benefit) of $1, $(1), $1 and $1,respectively       |   |              | (2     | )      |            |   | 1 |   |   |   | (1 | ) |   |   | (2 | ) |
| Total comprehensive income, net      of taxes                                                                                                              |   | $                 | 116    |   |            | $      | 86 |   |   | $ | 170 |   |   | $ | 111 |   |
| CIPS:                                                                                                                                                      |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Net      income (loss)                                                                                                                                     |   | $                 | (3     | )      |            | $      | 5 |   |   | $ | - |   |   | $ | 17 |   |
| Unrealized      net (loss) on derivative hedging instruments, net of taxes of $-,      $-,      $- and $-, respectively                                    |   |              | -      |   |            |   | (1 | ) |   |   | - |   |   |   | - |   |
| Total comprehensive income      (loss), net of taxes                                                                                                       |   | $                 | (3     | )      |            | $      | 4 |   |   | $ | - |   |   | $ | 17 |   |
| Genco:                                                                                                                                                     |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Net      income                                                                                                                                            |   | $                 | 74     |   |            | $      | 17 |   |   | $ | 120 |   |   | $ | 60 |   |
| Unrealized      net gain (loss) on derivative hedging instruments, net of taxes      (benefit)      of $4, $-, $- and $(1), respectively                   |   |              | 6      |   |            |   | - |   |   |   | - |   |   |   | (2 | ) |
| Reclassification      adjustments for derivative (gain) included in net income, netof      taxes of $4, $-, $4 and $-, respectively                        |   |              | (5     | )      |            |   | - |   |   |   | (5 | ) |   |   | - |   |
| Adjustment      to pension and benefit obligation, net of taxes (benefit) of $-,      $(2),      $(2) and $(2), respectively                               |   |              | -      |   |            |   | (3 | ) |   |   | 3 |   |   |   | (2 | ) |
| Total      comprehensive income, net of taxes                                                                                                              |   | $                 | 75     |   |            | $      | 14 |   |   | $ | 118 |   |   | $ | 56 |   |
| CILCORP:                                                                                                                                                   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Net      income                                                                                                                                            |   | $                 | 4      |   |            | $      | 12 |   |   | $ | 24 |   |   | $ | 33 |   |
| Unrealized      net gain (loss) on derivative hedging instruments, net of taxes      (benefit)      of $-, $(2), $- and $-, respectively                   |   |              | -      |   |            |   | (2 | ) |   |   | - |   |   |   | 1 |   |
| Reclassification      adjustments for derivative (gain) loss included in netincome,      net of taxes (benefit) of $-, $(1), $1 and $1,respectively        |   |              | -      |   |            |   | 1 |   |   |   | (1 | ) |   |   | (2 | ) |
|                                                                                                                                                       |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |

----

----

|                                                                                                                                     |   | Three      Months |   |   | Six      Months |   |
|------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|--------|--------|-----------------|--------|
|                                                                                                                                     |   | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Adjustment      to pension and benefit obligation, net of taxes of $2, $1, $1 and      $-,      respectively                             |   |              | 3      |   |            |   | (1 | ) |   |   | 3 |   |   |   | - |   |
| Total comprehensive income, net      of taxes                                                                                            |   | $                 | 7      |   |            | $      | 10 |   |   | $ | 26 |   |   | $ | 32 |   |
| CILCO:                                                                                                                                   |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Net      income                                                                                                                          |   | $                 | 12     |   |            | $      | 21 |   |   | $ | 38 |   |   | $ | 48 |   |
| Unrealized      net gain (loss) on derivative hedging instruments, net of taxes      (benefit)      of $-, $(2), $- and $-, respectively |   |              | -      |   |            |   | (2 | ) |   |   | - |   |   |   | 1 |   |
| Reclassification      adjustments for derivative (gain) included in net income, netof      taxes of $-, $-, $- and $1, respectively      |   |              | -      |   |            |   | - |   |   |   | - |   |   |   | (3 | ) |
| Adjustment      to pension and benefit obligation, net of taxes of $2, $-, $2 and      $-,      respectively                             |   |              | 4      |   |            |   | - |   |   |   | 4 |   |   |   | - |   |
| Total      comprehensive income, net of taxes                                                                                            |   | $                 | 16     |   |            | $      | 19 |   |   | $ | 42 |   |   | $ | 46 |   |
| IP:                                                                                                                                      |   |              |   |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Net      income (loss)                                                                                                                   |   | $                 | (10    | )      |            | $      | 7 |   |   | $ | (7 | ) |   | $ | 22 |   |
| Total comprehensive income      (loss), net of taxes                                                                                     |   | $                 | (10    | )      |            | $      | 7 |   |   | $ | (7 | ) |   | $ | 22 |   |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

|                                    |   | Pension      Benefits(a) |   |   | Postretirement      Benefits(a) |   |
|-----------------------------------------|--------|--------------------------|--------|--------|---------------------------------|--------|
|                                    |   | Three      Months        |   |   | Six      Months                 |   |   | Three      Months |   |   | Six      Months |   |
|                                    |   | 2008                     |   |   | 2007                            |   |   | 2008 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Service      cost                  |   | $                        | 14     |   |                            | $      | 15 |   |   | $ | 29 |   |   | $ | 31 |   |   | $ | 4 |   |   | $ | 4 |   |   | $ | 9 |   |   | $ | 10 |   |
| Interest      cost                 |   |                     | 46     |   |                            |   | 45 |   |   |   | 93 |   |   |   | 90 |   |   |   | 16 |   |   |   | 17 |   |   |   | 35 |   |   |   | 36 |   |
| Expected      return on plan assets     |   |                     | (53    | )      |                            |   | (51 | ) |   |   | (106 | ) |   |   | (103 | ) |   |   | (15 | ) |   |   | (13 | ) |   |   | (29 | ) |   |   | (26 | ) |
| Amortization      of:                   |   |                     |   |   |                            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Transition      obligation              |   |                     | -      |   |                            |   | - |   |   |   | - |   |   |   | - |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |   |   | 1 |   |
| Prior service cost      (benefit)  |   |                     | 3      |   |                            |   | 3 |   |   |   | 6 |   |   |   | 6 |   |   |   | (2 | ) |   |   | (2 | ) |   |   | (4 | ) |   |   | (4 | ) |
| Actuarial      loss                |   |                     | -      |   |                            |   | 5 |   |   |   | 1 |   |   |   | 11 |   |   |   | - |   |   |   | 5 |   |   |   | 4 |   |   |   | 12 |   |
| Net      periodic benefit cost          |   | $                        | 10     |   |                            | $      | 17 |   |   | $ | 23 |   |   | $ | 35 |   |   | $ | 4 |   |   | $ | 12 |   |   | $ | 16 |   |   | $ | 29 |   |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant    subsidiaries. |
|-----------------|--------------------------------------------------------------------------------|

|      |   | Pension      Costs |   |   | Postretirement      Costs |   |
|-----------|--------|--------------------|--------|--------|---------------------------|--------|
|      |   | Three      Months  |   |   | Six      Months           |   |   | Three      Months |   |   | Six      Months |   |
|      |   | 2008               |   |   | 2007                      |   |   | 2008 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |   | 2008 |   |   | 2007 |   |
| Ameren(a) |   | $                  | 10     |   |                      | $      | 17 |   |   | $ | 23 |   |   | $ | 35 |   |   | $ | 4 |   |   | $ | 12 |   |   | $ | 16 |   |   | $ | 29 |   |
| UE        |   |               | 10     |   |                      |   | 10 |   |   |   | 19 |   |   |   | 20 |   |   |   | - |   |   |   | 6 |   |   |   | 6 |   |   |   | 15 |   |
| CIPS      |   |               | 1      |   |                      |   | 2 |   |   |   | 3 |   |   |   | 4 |   |   |   | 1 |   |   |   | 1 |   |   |   | 2 |   |   |   | 3 |   |
| Genco     |   |               | 2      |   |                      |   | 1 |   |   |   | 3 |   |   |   | 2 |   |   |   | - |   |   |   | 1 |   |   |   | 1 |   |   |   | 2 |   |
| CILCORP   |   |               | (2     | )      |                      |   | - |   |   |   | (4 | ) |   |   | - |   |   |   | (1 | ) |   |   | (1 | ) |   |   | (2 | ) |   |   | (2 | ) |
| CILCO     |   |               | -      |   |                      |   | 2 |   |   |   | 2 |   |   |   | 5 |   |   |   | - |   |   |   | 2 |   |   |   | 2 |   |   |   | 5 |   |
| IP        |   |               | (3     | )      |                      |   | 1 |   |   |   | (2 | ) |   |   | 3 |   |   |   | 4 |   |   |   | 3 |   |   |   | 7 |   |   |   | 6 |   |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant    subsidiaries. |
|-----------------|--------------------------------------------------------------------------------|

----

|   Three      Months                                                                                                                                                                                                                                                          | Missouri      Regulated |   |   | Illinois      Regulated |   |   | Non-rate-regulated      Generation |   |   | Other  |   |   | Intersegment      Eliminations |   |   | Consolidated |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------|--------|--------|-------------------------|--------|--------|------------------------------------|--------|--------|--------|--------|--------|--------------------------------|--------|--------|--------------|--------|
| 2008:                                                                                                                                                                                                                                                                                  |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |
| External      revenues                                               | $                       | 760    |   |                    | $      | 717    |                               |   | $      | 312    |   |   | $                              | (1     | )      |         | $      | - |   |   | $ | 1,788 |   |
| Intersegment      revenues                                           |                    | 11     |   |                    |   | 12     |                               |   |   | 95     |   |   |                           | 4      |   |         |   | (122 | ) |   |   | - |   |
| Net      income (loss)(a)                                            |                    | 122    |   |                    |   | (14    | )                                  |   |   | 98     |   |   |                           | -      |   |         |   | - |   |   |   | 206 |   |
| 2007:                                                                                                                                                                                                                                                                                  |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |   |   |   |   |   |   |
| External      revenues                                               | $                       | 686    |   |                    | $      | 750    |                               |   | $      | 290    |   |   | $                              | 2      |   |         | $      | - |   |   | $ | 1,728 |   |
| Intersegment      revenues                                           |                    | 11     |   |                    |   | 6      |                               |   |   | 124    |   |   |                           | 10     |   |         |   | (151 | ) |   |   | - |   |
| Net      income(a)                                                   |                    | 67     |   |                    |   | 20     |                               |   |   | 56     |   |   |                           | -      |   |         |   | - |   |   |   | 143 |   |
| Six      Months                                                                                                                                                                                                                                                                        |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |   |   |   |   |   |   |
| 2008:                                                                                                                                                                                                                                                                                  |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |   |   |   |   |   |   |
| External      revenues                                               | $                       | 1,475  |   |                    | $      | 1,763  |                               |   | $      | 628    |   |   | $                              | 1      |   |         | $      | - |   |   | $ | 3,867 |   |
| Intersegment      revenues                                           |                    | 20     |   |                    |   | 23     |                               |   |   | 227    |   |   |                           | 8      |   |         |   | (278 | ) |   |   | - |   |
| Net      income (loss)(a)                                            |                    | 174    |   |                    |   | 2      |                               |   |   | 176    |   |   |                           | (8     | )      |         |   | - |   |   |   | 344 |   |
| 2007:                                                                                                                                                                                                                                                                                  |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |   |   |   |   |   |   |
| External      revenues                                               | $                       | 1,324  |   |                    | $      | 1,809  |                               |   | $      | 608    |   |   | $                              | 11     |   |         | $      | - |   |   | $ | 3,752 |   |
| Intersegment      revenues                                           |                    | 23     |   |                    |   | 13     |                               |   |   | 257    |   |   |                           | 20     |   |         |   | (313 | ) |   |   | - |   |
| Net      income(a)                                                   |                    | 85     |   |                    |   | 53     |                               |   |   | 126    |   |   |                           | 2      |   |         |   | - |   |   |   | 266 |   |
| As      of June 30, 2008:                                                                                                                                                                                                                                                              |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |   |   |   |   |   |   |
| Total      assets                                                                                                                                                                                                                                                                      | $                       | 11,049 |   |                    | $      | 6,465  |                               |   | $      | 4,544  |   |   | $                              | 1,218  |   |         | $      | (1,631 | ) |   | $ | 21,645 |   |
| As      of December 31, 2007:                                                                                                                                                                                                                                                          |                    |   |   |                    |   |   |                               |   |   |   |   |   |                           |   |   |         |   |   |   |   |   |   |   |
| Total      assets                                                                                                                                                                                                                                                                      | $                       | 10,852 |   |                    | $      | 6,385  |                               |   | $      | 4,027  |   |   | $                              | 965    |   |         | $      | (1,501 | ) |   | $ | 20,728 |   |

| (a)   | Represents      net income available to common shareholders; 100% of CILCO’s preferred      stock dividends are included in the Illinois Regulated      segment. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|  Three      Months                                                                                                                                                                                                                                                                                                                                                                                            | Missouri      Regulated |   | Other      (a) |   |   | ConsolidatedUE |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------|--------|----------------|--------|--------|----------------|--------|
| 2008:                                                                                                                                                                                                                                                                                                                                                                                                              |                    |   |           |   |   |           |   |   |
| Revenues                                                                           | $                       | 771    |           |   | $      | -              |   |   | $ | 771 |   |
| Net      income(b)                                                                 |                    | 122    |           |   |   | -              |   |   |   | 122 |   |
| 2007:                                                                                                                                                                                                                                                                                                                                                                                                              |                    |   |           |   |   |           |   |   |   |   |   |
| Revenues                                                                           | $                       | 697    |           |   | $      | -              |   |   | $ | 697 |   |
| Net      income(b)                                                                 |                    | 67     |           |   |   | 12             |   |   |   | 79 |   |

----

----

| Six      Months                                                                                                                                                                                                                                                                                                                                                                                                    | Missouri      Regulated |   | Other      (a)  |   |   |   | ConsolidatedUE  |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------|--------|----------------------|--------|--------|--------|----------------------|--------|
| 2008:                                                                                                                                                                                                                                                                                                                                                                                                              |                    |   |                 |   |   |   |                 |   |   |   |   |
| Revenues                                                                           | $                       | 1,495  |                 |   | $      | -      |                 |   | $ | 1,495 |   |
| Net      income(b)                                                                 |                    | 174    |                 |   |   | 11     |                 |   |   | 185 |   |
| 2007:                                                                                                                                                                                                                                                                                                                                                                                                              |                    |   |                 |   |   |   |                 |   |   |   |   |
| Revenues                                                                           | $                       | 1,347  |                 |   | $      | -      |                 |   | $ | 1,347 |   |
| Net      income(b)                                                                 |                    | 85     |                 |   |   | 26     |                 |   |   | 111 |   |
| As      of June 30, 2008:                                                                                                                                                                                                                                                                                                                                                                                          |                    |   |                 |   |   |   |                 |   |   |   |   |
| Total      assets                                                                                                               | $                       | 11,049 |                 |   | $      | -      |                 |   | $ | 11,049 |   |
| As      of December 31, 2007:                                                                                                                                                                                                                                                                                                                                                                                      |                    |   |                 |   |   |   |                 |   |   |   |   |
| Total      assets                                                                            | $                       | 10,852 |                 |   | $      | 51     |                 |   | $ | 10,903 |   |

| (a)   | Included      40% interest in EEI through February 29,2008. |
|-----------------|-------------------------------------------------------------|

| (b)   | Represents      net income available to the common shareholder  (Ameren). |
|-----------------|---------------------------------------------------------------------------|

|   Three      Months                                                                                                                                                                                                                                                                            |   | Illinois      Regulated |   |   | Non-rate-regulated      Generation |   |   | CILCORPOther |   |   | IntersegmentEliminations |   |   | ConsolidatedCILCORP |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|------------------------------------|--------|--------|--------------|--------|--------|--------------------------|--------|--------|---------------------|--------|
| 2008:                                                                                                                                                                                                                                                                                                    |   |                    |   |   |                               |   |   |         |   |   |                     |   |   |                |   |
| External      revenues                                                  |   | $                       | 162    |   |                               | $      | 70     |         |   | $      | -                        |   |   | $                   | -      |   |   | $ | 232 |   |
| Intersegment      revenues                                              |   |                    | 2      |   |                               |   | (1     | )            |   |   | -                        |   |   |                | (1     | ) |   |   | - |   |
| Net      income (loss)(a)                                               |   |                    | (1     | )      |                               |   | 5      |         |   |   | -                        |   |   |                | -      |   |   |   | 4 |   |
| 2007:                                                                                                                                                                                                                                                                                                    |   |                    |   |   |                               |   |   |         |   |   |                     |   |   |                |   |   |   |   |   |   |
| External      revenues                                                  |   | $                       | 164    |   |                               | $      | 62     |         |   | $      | -                        |   |   | $                   | -      |   |   | $ | 226 |   |
| Intersegment      revenues                                              |   |                    | -      |   |                               |   | 1      |         |   |   | -                        |   |   |                | (1     | ) |   |   | - |   |
| Net      income(a)                                                      |   |                    | 6      |   |                               |   | 6      |         |   |   | -                        |   |   |                | -      |   |   |   | 12 |   |

| Six      Months                                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
| 2008:                                                                                                                                                                                                                                                                                                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| External      revenues                                                  |   | $      | 428    |   |   | $      | 149    |   |   | $      | -      |   |   | $      | -      |   |   | $      | 577    |   |
| Intersegment      revenues                                              |   |   | 2      |   |   |   | -      |   |   |   | -      |   |   |   | (2     | )      |   |   | -      |   |
| Net      income(a)                                                      |   |   | 11     |   |   |   | 13     |   |   |   | -      |   |   |   | -      |   |   |   | 24     |   |
| 2007:                                                                                                                                                                                                                                                                                                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| External      revenues                                                  |   | $      | 403    |   |   | $      | 138    |   |   | $      | -      |   |   | $      | -      |   |   | $      | 541    |   |
| Intersegment      revenues                                              |   |   | -      |   |   |   | 2      |   |   |   | -      |   |   |   | (2     | )      |   |   | -      |   |
| Net      income(a)                                                      |   |   | 14     |   |   |   | 19     |   |   |   | -      |   |   |   | -      |   |   |   | 33     |   |
| As      of June 30, 2008:                                                                                                                                                                                                                                                                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      assets(b)                                                                                                                                                                                                                                                                                     |   | $      | 1,235  |   |   | $      | 1,530  |   |   | $      | 2      |   |   | $      | (190   | )      |   | $      | 2,577  |   |
| As      of December 31, 2007:                                                                                                                                                                                                                                                                            |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      assets(b)                                                                                                                                                                                                                                                                                     |   | $      | 1,202  |   |   | $      | 1,455  |   |   | $      | 1      |   |   | $      | (199   | )      |   | $      | 2,459  |   |

| (a)   | Represents      net income available to the common shareholder (Ameren); 100% of CILCO’s      preferred stock dividends are included in the Illinois Regulated      segment. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Total      assets for Illinois Regulated include an allocation of goodwill and other      purchase accounting amounts related to CILCO that are recorded at CILCORP      (parent company). |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   Three      Months                                                                                                                                                                                                                                                                            |   | Illinois      Regulated |   |   | Non-rate-regulated      Generation |   |   | CILCOOther |   |   | IntersegmentEliminations |   |   | ConsolidatedCILCO |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|------------------------------------|--------|--------|------------|--------|--------|--------------------------|--------|--------|-------------------|--------|
| 2008:                                                                                                                                                                                                                                                                                                    |   |                    |   |   |                               |   |   |       |   |   |                     |   |   |              |   |
| External      revenues                                                  |   | $                       | 162    |   |                               | $      | 70     |       |   | $      | -                        |   |   | $                 | -      |   |   | $ | 232 |   |
| Intersegment      revenues                                              |   |                    | 2      |   |                               |   | (1     | )          |   |   | -                        |   |   |              | (1     | ) |   |   | - |   |
| Net      income (loss)(a)                                               |   |                    | (1     | )      |                               |   | 12     |       |   |   | -                        |   |   |              | -      |   |   |   | 11 |   |
| 2007:                                                                                                                                                                                                                                                                                                    |   |                    |   |   |                               |   |   |       |   |   |                     |   |   |              |   |   |   |   |   |   |
| External      revenues                                                  |   | $                       | 164    |   |                               | $      | 62     |       |   | $      | -                        |   |   | $                 | -      |   |   | $ | 226 |   |
| Intersegment      revenues                                              |   |                    | -      |   |                               |   | 1      |       |   |   | -                        |   |   |              | (1     | ) |   |   | - |   |
| Net      income(a)                                                      |   |                    | 6      |   |                               |   | 14     |       |   |   | -                        |   |   |              | -      |   |   |   | 20 |   |

----

----

| Six      Months                                                                                                                                                                                                                                                                                          |   | Illinois      Regulated |   |   | Non-rate-regulated      Generation |   |   | CILCOOther |   |   | IntersegmentEliminations |   |   | ConsolidatedCILCO |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|------------------------------------|--------|--------|------------|--------|--------|--------------------------|--------|--------|-------------------|--------|
| 2008:                                                                                                                                                                                                                                                                                                    |   |                    |   |   |                               |   |   |       |   |   |                     |   |   |              |   |   |   |   |   |   |
| External      revenues                                                  |   | $                       | 428    |   |                               | $      | 149    |       |   | $      | -                        |   |   | $                 | -      |   |   | $ | 577 |   |
| Intersegment      revenues                                              |   |                    | 2      |   |                               |   | -      |       |   |   | -                        |   |   |              | (2     | ) |   |   | - |   |
| Net      income(a)                                                      |   |                    | 11     |   |                               |   | 26     |       |   |   | -                        |   |   |              | -      |   |   |   | 37 |   |
| 2007:                                                                                                                                                                                                                                                                                                    |   |                    |   |   |                               |   |   |       |   |   |                     |   |   |              |   |   |   |   |   |   |
| External      revenues                                                  |   | $                       | 403    |   |                               | $      | 138    |       |   | $      | -                        |   |   | $                 | -      |   |   | $ | 541 |   |
| Intersegment      revenues                                              |   |                    | -      |   |                               |   | 2      |       |   |   | -                        |   |   |              | (2     | ) |   |   | - |   |
| Net      income(a)                                                      |   |                    | 14     |   |                               |   | 33     |       |   |   | -                        |   |   |              | -      |   |   |   | 47 |   |
| As      of June 30, 2008:                                                                                                                                                                                                                                                                                |   |                    |   |   |                               |   |   |       |   |   |                     |   |   |              |   |   |   |   |   |   |
| Total      assets                                                       |   | $                       | 1,045  |   |                               | $      | 946    |       |   | $      | -                        |   |   | $                 | (1     | ) |   | $ | 1,990 |   |
| As      of December 31, 2007:                                                                                                                                                                                                                                                                            |   |                    |   |   |                               |   |   |       |   |   |                     |   |   |              |   |   |   |   |   |   |
| Total      assets                                                       |   | $                       | 1,012  |   |                               | $      | 859    |       |   | $      | -                        |   |   | $                 | (9     | ) |   | $ | 1,862 |   |

| (a)   | Represents      net income available to the common shareholder (CILCORP); 100% of CILCO’s      preferred stock dividends are included in the Illinois Regulated      segment. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Net      unrealized mark-to-market gains from nonqualifying hedges increased      Ameren’s net income in the second quarter and first six months of 2008 by      $48 million and $58 million, respectively, as compared to gains of $5      million and $1 million in the second quarter and first six months of 2007,      respectively. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      lump-sum payment from a coal supplier for expected higher fuel costs for      our Non-rate-regulated Generation segment in 2009 as a result of the      premature closure of a mine in late 2007 and the resulting termination of      a contract increased Ameren’s second quarter and first half of 2008 net      income by $16 million. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      estimated minimum amount of storm costs that UE expects to recover, as a      result of an accounting order issued by the MoPSC, which was recorded as a      regulatory asset, increased Ameren’s net income in the second quarter and      first six months of 2008 by $8million. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Severe      ice storms reduced Ameren’s net income in the first half of 2007 by $18      million as compared to minor storm expenditures in the first half of      2008. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      FERC order that resettled costs among market participants, retroactive to      2005, reduced Ameren’s net income in the first six months of 2007 by $10      million. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      net costs associated with the Illinois electric settlement agreement      reduced Ameren’s net income by $8 million and $14 million in the second      quarter and first half of 2008, respectively, while the reversal of a 2006      charge related to funding commitments for the Illinois Customer Elect      electric rate increase phase-in plan benefited net income in the first six      months of 2007 by $10 million. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | UE      operates a rate-regulated electric generation, transmission and      distribution business, and a rate-regulated natural gas transmission and      distribution business in Missouri. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | CIPS      operates a rate-regulated electric and natural gas transmission and      distribution business in Illinois. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------|

| ·   | Genco      operates a non-rate-regulated electric generation business in Illinois and      Missouri. |
|--------------------|------------------------------------------------------------------------------------------------------|

| ·   | CILCO,      a subsidiary of CILCORP (a holding company), operates a rate-regulated      electric and natural gas transmission and distribution business and a      non-rate-regulated electric generation business (through its subsidiary,      AERG) in Illinois. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | IP      operates a rate-regulated electric and natural gas transmission and      distribution business in Illinois. |
|--------------------|---------------------------------------------------------------------------------------------------------------------|

----

| ·   | increased      margins on interchange sales in the Missouri Regulated      segment; |
|--------------------|-------------------------------------------------------------------------------------|

| ·   | increased      plant availability and higher realized electric margins in the      Non-rate-regulated Generationsegment; |
|--------------------|--------------------------------------------------------------------------------------------------------------------------|

| ·   | net      mark-to-market gains on energy and fuel-related transactions (21 cents per      share and 28 cents per share,respectively); |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------|

| ·   | a      settlement agreement with a coal mine owner reached in June 2008 that      reimbursed Genco, in the form of a lump-sum payment of $60 million, for      increased costs for coal and transportation that it is incurring in 2008      and expects to incur in 2009 ($27 million) due to the premature closure of      an Illinois mine at the end of 2007 (18 cents per share and 18 cents per      share, respectively); |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | the      absence of costs in 2008 that were incurred in 2007 relating to a      refueling and maintenance outage at UE’s Callaway nuclear plant (16 cents      per share and 16 cents per share,respectively); |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | the      minimum amount of storm costs that UE expects to recover, as a result of      an accounting order issued by the MoPSC, which was recorded as a      regulatory asset (4 cents per share and 4 cents per share,      respectively); and |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | higher      electric rates, lower depreciation expense and decreased income tax      expense in the Missouri Regulated segment pursuant to the MoPSC electric      rate order for UE issued in May 2007 (2 cents per share and 8 cents per      share, respectively). |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | higher      fuel and related transportation prices (8 cents per share and 17 cents per      share, respectively); |
|--------------------|-------------------------------------------------------------------------------------------------------------------|

| ·   | increased      distribution system reliability expenditures (8 cents per share and 14      cents per share, respectively); |
|--------------------|----------------------------------------------------------------------------------------------------------------------------|

| ·   | higher      plant operations and maintenance expense (6 cents per share and 8      cents per share, respectively); |
|--------------------|-------------------------------------------------------------------------------------------------------------------------|

| ·   | unfavorable      weather conditions (estimated at 3 cents per share for the second quarter      only); |
|--------------------|--------------------------------------------------------------------------------------------------------|

| ·   | electric      rate relief and customer assistance programs provided to certain Ameren      Illinois Utilities electric customers under the Illinois electric      settlement agreement (4 cents per share and 7 cents per share,      respectively); |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | higher      labor and employee benefit costs (5 cents per share and 6 cents per share,      respectively); |
|--------------------|------------------------------------------------------------------------------------------------------------|

| ·   | higher      financing costs (3 cents per share and 3 cents per share,      respectively); |
|--------------------|-------------------------------------------------------------------------------------------|

| ·   | higher      bad debt expenses (2 cents per share and 3 cents per share, respectively);      and |
|--------------------|-------------------------------------------------------------------------------------------------|

| ·   | the      implementation of new seasonal delivery service tariffs at the Ameren      Illinois Utilities, which will impact quarterly earnings comparisons in      2008 but are not expected to have any impact on annual margins (1 cent per      share and 6 cents per share,respectively). |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|                             |   | Three      Months |   |   | Six      Months |   |
|----------------------------------|--------|-------------------|--------|--------|-----------------|--------|
|                             |   | 2008              |   |   | 2007            |   |   | 2008 |   |   | 2007 |   |
| Net      income (loss):          |   |              |   |   |            |   |   |   |   |   |   |   |
|    UE(a)          |   | $                 | 122    |   |            | $      | 79 |   |   | $ | 185 |   |   | $ | 111 |   |
|    CIPS           |   |              | (3     | )      |            |   | 5 |   |   |   | (1 | ) |   |   | 16 |   |
|    Genco          |   |              | 74     |   |            |   | 17 |   |   |   | 120 |   |   |   | 60 |   |
|    CILCORP        |   |              | 4      |   |            |   | 12 |   |   |   | 24 |   |   |   | 33 |   |
|    IP             |   |              | (10    | )      |            |   | 7 |   |   |   | (8 | ) |   |   | 21 |   |
|    Other(b)  |   |              | 19     |   |            |   | 23 |   |   |   | 24 |   |   |   | 25 |   |
| Ameren      net income           |   | $                 | 206    |   |            | $      | 143 |   |   | $ | 344 |   |   | $ | 266 |   |

| (a)   | Includes      earnings from a non-rate-regulated 40% interest in EEI through February      29, 2008. |
|-----------------|------------------------------------------------------------------------------------------------------|

| (b)   | Includes      earnings from non-rate-regulated operations and an 80% interest in EEI      held by Resources Company since February 29, 2008, as well as corporate      general and administrative expenses, and intercompany eliminations. Prior      to February 29, 2008, included a 40% interest in EEI held by Development      Company, as well as corporate general and administrative expenses and      intercompany eliminations. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                                                                                                                                                                                                                                                                                                                 |   | Missouri      Regulated |   |   | Illinois      Regulated |   |   | Non-rate-regulated      Generation |   |   | Other      / IntersegmentEliminations |   |   |  Total |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|-------------------------|--------|--------|------------------------------------|--------|--------|---------------------------------------|--------|--------|-------------|--------|
| Three      Months 2008:                                                                                                                                                                                                                                                                                                              |   |                    |   |   |                    |   |   |                               |   |   |                                  |   |   |        |   |
| Electric      margin                                                                      |   | $                       | 595    |   |                    | $      | 188    |                               |   | $      | 320                                   |   |   | $           | (4     | ) |   | $ | 1,099 |   |
| Gas      margin                                                                           |   |                    | 17     |   |                    |   | 63     |                               |   |   | -                                     |   |   |        | (2     | ) |   |   | 78 |   |
| Other      operations and      maintenance                                                |   |                    | (238   | )      |                    |   | (154   | )                                  |   |   | (90                                   | )      |   |        | 13     |   |   |   | (469 | ) |
| Depreciation      and      amortization                                                   |   |                    | (82    | )      |                    |   | (61    | )                                  |   |   | (29                                   | )      |   |        | (6     | ) |   |   | (178 | ) |
| Taxes      other than income      taxes                                                   |   |                    | (60    | )      |                    |   | (24    | )                                  |   |   | (6                                    | )      |   |        | 1      |   |   |   | (89 | ) |
| Other      income and      (expenses)                                                     |   |                    | 13     |   |                    |   | 3      |                               |   |   | 4                                     |   |   |        | (7     | ) |   |   | 13 |   |
| Interest      expense                                                                     |   |                    | (50    | )      |                    |   | (37    | )                                  |   |   | (29                                   | )      |   |        | (2     | ) |   |   | (118 | ) |
| Income      taxes                                                                         |   |                    | (71    | )      |                    |   | 9      |                               |   |   | (64                                   | )      |   |        | 7      |   |   |   | (119 | ) |
| Minority      interest and preferred dividends                                                                                                                                                                                                                                                                                       |   |                    | (2     | )      |                    |   | (1     | )                                  |   |   | (8                                    | )      |   |        | -      |   |   |   | (11 | ) |
| Net      income      (loss)                                                               |   | $                       | 122    |   |                    | $      | (14    | )                                  |   | $      | 98                                    |   |   | $           | -      |   |   | $ | 206 |   |
| Three      Months 2007:                                                                                                                                                                                                                                                                                                              |   |                    |   |   |                    |   |   |                               |   |   |                                  |   |   |        |   |   |   |   |   |   |
| Electric      margin                                                                      |   | $                       | 494    |   |                    | $      | 207    |                               |   | $      | 251                                   |   |   | $           | (10    | ) |   | $ | 942 |   |
| Gas      margin                                                                           |   |                    | 14     |   |                    |   | 63     |                               |   |   | -                                     |   |   |        | (1     | ) |   |   | 76 |   |
| Other      operations and      maintenance                                                |   |                    | (223   | )      |                    |   | (124   | )                                  |   |   | (89                                   | )      |   |        | 16     |   |   |   | (420 | ) |
| Depreciation      and      amortization                                                   |   |                    | (84    | )      |                    |   | (58    | )                                  |   |   | (30                                   | )      |   |        | (4     | ) |   |   | (176 | ) |
| Taxes      other than income      taxes                                                   |   |                    | (60    | )      |                    |   | (30    | )                                  |   |   | (6                                    | )      |   |        | -      |   |   |   | (96 | ) |
| Other      income and      (expenses)                                                     |   |                    | 7      |   |                    |   | 7      |                               |   |   | 1                                     |   |   |        | (3     | ) |   |   | 12 |   |
| Interest      expense                                                                     |   |                    | (49    | )      |                    |   | (33    | )                                  |   |   | (28                                   | )      |   |        | 2      |   |   |   | (108 | ) |
| Income      taxes                                                                         |   |                    | (30    | )      |                    |   | (11    | )                                  |   |   | (37                                   | )      |   |        | -      |   |   |   | (78 | ) |
| Minority      interest and preferred dividends                                                                                                                                                                                                                                                                                       |   |                    | (2     | )      |                    |   | (1     | )                                  |   |   | (6                                    | )      |   |        | -      |   |   |   | (9 | ) |
| Net      income                                                                           |   | $                       | 67     |   |                    | $      | 20     |                               |   | $      | 56                                    |   |   | $           | -      |   |   | $ | 143 |   |
| Six      Months 2008:                                                                                                                                                                                                                                                                                                                |   |                    |   |   |                    |   |   |                               |   |   |                                  |   |   |        |   |   |   |   |   |   |
| Electric      margin                                                                      |   | $                       | 1,036  |   |                    | $      | 366    |                               |   | $      | 592                                   |   |   | $           | (17    | ) |   | $ | 1,977 |   |
| Gas      margin                                                                           |   |                    | 45     |   |                    |   | 189    |                               |   |   | -                                     |   |   |        | (3     | ) |   |   | 231 |   |
| Other      operations and      maintenance                                                |   |                    | (455   | )      |                    |   | (297   | )                                  |   |   | (168                                  | )      |   |        | 29     |   |   |   | (891 | ) |
| Depreciation      and      amortization                                                   |   |                    | (163   | )      |                    |   | (121   | )                                  |   |   | (57                                   | )      |   |        | (13    | ) |   |   | (354 | ) |
| Taxes      other than income      taxes                                                   |   |                    | (120   | )      |                    |   | (67    | )                                  |   |   | (14                                   | )      |   |        | (1     | ) |   |   | (202 | ) |
| Other      income and      (expenses)                                                     |   |                    | 25     |   |                    |   | 7      |                               |   |   | 5                                     |   |   |        | (8     | ) |   |   | 29 |   |
|                                                                                                                                                                                                                                                                                                                                 |   |                    |   |   |                    |   |   |                               |   |   |                                  |   |   |        |   |   |   |   |   |   |

----

----

| Six      Months 2008:                                                                                                                                                                                                                                                                                                                |   | Missouri      Regulated |   |   | Illinois      Regulated |   |   | Non-rate-regulated      Generation |   |   | Other      / IntersegmentEliminations |   |   |  Total |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------|--------|--------|-------------------------|--------|--------|------------------------------------|--------|--------|---------------------------------------|--------|--------|-------------|--------|
| Interest      expense                                                                     |   |                    | (91    | )      |                    |   | (72    | )                                  |   |   | (50                                   | )      |   |        | (5     | ) |   |   | (218 | ) |
| Income      taxes                                                                         |   |                    | (100   | )      |                    |   | -      |                               |   |   | (116                                  | )      |   |        | 10     |   |   |   | (206 | ) |
| Minority      interest and preferred dividends                                                                                                                                                                                                                                                                                       |   |                    | (3     | )      |                    |   | (3     | )                                  |   |   | (16                                   | )      |   |        | -      |   |   |   | (22 | ) |
| Net      income      (loss)                                                               |   | $                       | 174    |   |                    | $      | 2      |                               |   | $      | 176                                   |   |   | $           | (8     | ) |   | $ | 344 |   |
| Six      Months 2007:                                                                                                                                                                                                                                                                                                                |   |                    |   |   |                    |   |   |                               |   |   |                                  |   |   |        |   |   |   |   |   |   |
| Electric      margin                                                                      |   | $                       | 902    |   |                    | $      | 386    |                               |   | $      | 501                                   |   |   | $           | (20    | ) |   | $ | 1,769 |   |
| Gas      margin                                                                           |   |                    | 41     |   |                    |   | 178    |                               |   |   | -                                     |   |   |        | (3     | ) |   |   | 216 |   |
| Other      revenues                                                                       |   |                    | 1      |   |                    |   | 2      |                               |   |   | -                                     |   |   |        | (3     | ) |   |   | - |   |
| Other      operations and      maintenance                                                |   |                    | (446   | )      |                    |   | (245   | )                                  |   |   | (157                                  | )      |   |        | 39     |   |   |   | (809 | ) |
| Depreciation      and      amortization                                                   |   |                    | (171   | )      |                    |   | (118   | )                                  |   |   | (57                                   | )      |   |        | (13    | ) |   |   | (359 | ) |
| Taxes      other than income      taxes                                                   |   |                    | (117   | )      |                    |   | (66    | )                                  |   |   | (14                                   | )      |   |        | (1     | ) |   |   | (198 | ) |
| Other      income and      (expenses)                                                     |   |                    | 16     |   |                    |   | 10     |                               |   |   | 2                                     |   |   |        | (7     | ) |   |   | 21 |   |
| Interest      expense                                                                     |   |                    | (97    | )      |                    |   | (62    | )                                  |   |   | (53                                   | )      |   |        | 6      |   |   |   | (206 | ) |
| Income      taxes                                                                         |   |                    | (41    | )      |                    |   | (29    | )                                  |   |   | (83                                   | )      |   |        | 4      |   |   |   | (149 | ) |
| Minority      interest and preferred dividends                                                                                                                                                                                                                                                                                       |   |                    | (3     | )      |                    |   | (3     | )                                  |   |   | (13                                   | )      |   |        | -      |   |   |   | (19 | ) |
| Net      income                                                                           |   | $                       | 85     |   |                    | $      | 53     |                               |   | $      | 126                                   |   |   | $           | 2      |   |   | $ | 266 |   |

| Three      Months                                                                            |   | Ameren(a) |           |   | UE     |   |   | CIPS   |   |   | Genco  |   |   | CILCORP |   |   | CILCO  |   |   | IP     |   |
|----------------------------------------------------------------------------------------------|--------|-----------|----------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|---------|--------|--------|--------|--------|--------|--------|--------|
| Electric      revenue change:                                                                |   |      |           |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |
| Effect      of weather (estimate)                                                            |   | $         | (28            | )      |   | $      | (6     | )      |   | $      | (8     | )      |   | $       | -      |   |   | $      | (4     | )      |   | $ | (4 | ) |   | $ | (10 | ) |
| UE      electric rate increase                                                               |   |      | 7              |   |   |   | 7      |   |   |   | -      |   |   |    | -      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Interchange      revenues, excluding  estimated weather      impact of $13 million |   |      | 42             |   |   |   | 42     |   |   |   | -      |   |   |    | -      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Illinois      electric settlement agreement - netof reimbursement                       |   |      |        (8 | )      |   |   | -      |   |   |   | (1     | )      |   |    | (5     | )      |   |   | (3     | )      |   |   | (3 | ) |   |   | (2 | ) |
| Illinois      rate redesign                                                                  |   |      | 8              |   |   |   | -      |   |   |   | 4      |   |   |    | -      |   |   |   | 1      |   |   |   | 1 |   |   |   | 3 |   |
| Net      mark-to-market gains (losses) onenergy      contracts                               |   |      | (19            | )      |   |   | 14     |   |   |   | -      |   |   |    | -      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Growth,      Illinois customer switching, and  other                               |   |      | 24             |   |   |   | 11     |   |   |   | (19    | )      |   |    | 13     |   |   |   | 3      |   |   |   | 3 |   |   |   | (13 | ) |
| Total      electric revenue change                                                           |   | $         | 26             |   |   | $      | 68     |   |   | $      | (24    | )      |   | $       | 8      |   |   | $      | (3     | )      |   | $ | (3 | ) |   | $ | (22 | ) |
| Fuel      and purchased power change:                                                        |   |      |           |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel:                                                                                        |   |      |           |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Generation      and other                                                                    |   | $         | 17             |   |   | $      | 12     |   |   | $      | -      |   |   | $       | 16     |   |   | $      | (14    | )      |   | $ | (14 | ) |   | $ | - |   |
| Emission      allowance sales (costs)                                                        |   |      | 3              |   |   |   | 3      |   |   |   | -      |   |   |    | 1      |   |   |   | (1     | )      |   |   | (1 | ) |   |   | - |   |
| Net      mark-to-market gains on fuel  contracts                                   |   |      | 88             |   |   |   | 48     |   |   |   | -      |   |   |    | 23     |   |   |   | 7      |   |   |   | 7 |   |   |   | - |   |
| Price                                                                                        |   |      | (45            | )      |   |   | (24    | )      |   |   | -      |   |   |    | (15    | )      |   |   | (3     | )      |   |   | (3 | ) |   |   | - |   |
| Coal      contract settlement                                                                |   |      | 60             |   |   |   | -      |   |   |   | -      |   |   |    | 60     |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Purchased      power                                                                         |   |      | 18             |   |   |   | (8     | )      |   |   | 23     |   |   |    | -      |   |   |   | 3      |   |   |   | 3 |   |   |   | 20 |   |
| Illinois      rate redesign                                                                  |   |      | (10            | )      |   |   | -      |   |   |   | (4     | )      |   |    | -      |   |   |   | (1     | )      |   |   | (1 | ) |   |   | (3 | ) |
| Total      fuel and purchased power change                                                   |   | $         | 131            |   |   | $      | 31     |   |   | $      | 19     |   |   | $       | 85     |   |   | $      | (9     | )      |   | $ | (9 | ) |   | $ | 17 |   |
| Net      change in electric margins                                                          |   | $         | 157            |   |   | $      | 99     |   |   | $      | (5     | )      |   | $       | 93     |   |   | $      | (12    | )      |   | $ | (12 | ) |   | $ | (5 | ) |
| Net      change in gas margins                                                               |   | $         | 2              |   |   | $      | 3      |   |   | $      | (1     | )      |   | $       | -      |   |   | $      | 1      |   |   | $ | 1 |   |   | $ | 1 |   |
| Six      Months                                                                              |   |      |           |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Electric      revenue change:                                                                |   |      |           |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Effect      of weather (estimate)                                                            |   | $         | (24            | )      |   | $      | (5     | )      |   | $      | (7     | )      |   | $       | -      |   |   | $      | (3     | )      |   | $ | (3 | ) |   | $ | (9 | ) |
| UE      electric rate increase                                                               |   |      | 16             |   |   |   | 16     |   |   |   | -      |   |   |    | -      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Interchange      revenues, excluding estimatedweather      impact of $10 million             |   |      | 74             |   |   |   | 74     |   |   |   | -      |   |   |    | -      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Illinois      electric settlement agreement – netof      reimbursement                 |   |      | (19            | )      |   |   | -      |   |   |   | (3     | )      |   |    | (9     | )      |   |   | (6     | )      |   |   | (6 | ) |   |   | (4 | ) |
|                                                                                         |   |      |           |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

----

----

| Six      Months                                                |   | Ameren(a) |   |   | UE     |   |   | CIPS   |   |   | Genco  |   |   | CILCORP |   |   | CILCO  |   |   | IP     |   |
|----------------------------------------------------------------|--------|-----------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|---------|--------|--------|--------|--------|--------|--------|--------|
| FERC-ordered      MISO resettlements –March      2007    |   |      | (13    | )      |   |   | -      |   |   |   | -      |   |   |    | (8     | )      |   |   | (4     | )      |   |   | (4 | ) |   |   | - |   |
| Illinois      rate redesign                                    |   |      | (30    | )      |   |   | -      |   |   |   | (10    | )      |   |    | -      |   |   |   | (5     | )      |   |   | (5 | ) |   |   | (15 | ) |
| Net      mark-to-market gains (losses) onenergy      contracts |   |      | (7     | )      |   |   | 18     |   |   |   | -      |   |   |    | -      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Growth,      Illinois customer switching, andother             |   |      | 33     |   |   |   | 33     |   |   |   | (35    | )      |   |    | 13     |   |   |   | 29     |   |   |   | 29 |   |   |   | (28 | ) |
| Total      electric revenue change                             |   | $         | 30     |   |   | $      | 136    |   |   | $      | (55    | )      |   | $       | (4     | )      |   | $      | 11     |   |   | $ | 11 |   |   | $ | (56 | ) |
| Fuel      and purchased power change:                          |   |      |   |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fuel:                                                          |   |      |   |   |   |   |   |   |   |   |   |   |   |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Generation      and other                                      |   | $         | (2     | )      |   | $      | 4      |   |   | $      | -      |   |   | $       | 12     |   |   | $      | (19    | )      |   | $ | (19 | ) |   | $ | - |   |
| Emission      allowance sales                                  |   |      | 3      |   |   |   | 1      |   |   |   | -      |   |   |    | 2      |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Net      mark-to-market gains on fuel  contracts     |   |      | 99     |   |   |   | 54     |   |   |   | -      |   |   |    | 28     |   |   |   | 8      |   |   |   | 8 |   |   |   | - |   |
| Price                                                          |   |      | (76    | )      |   |   | (42    | )      |   |   | -      |   |   |    | (24    | )      |   |   | (5     | )      |   |   | (5 | ) |   |   | - |   |
| Coal      contract settlement                                  |   |      | 60     |   |   |   | -      |   |   |   | -      |   |   |    | 60     |   |   |   | -      |   |   |   | - |   |   |   | - |   |
| Purchased      power                                           |   |      | 51     |   |   |   | (34    | )      |   |   | 36     |   |   |    | 21     |   |   |   | (5     | )      |   |   | (5 | ) |   |   | 32 |   |
| Illinois      rate redesign                                    |   |      | 11     |   |   |   | -      |   |   |   | 4      |   |   |    | -      |   |   |   | 2      |   |   |   | 2 |   |   |   | 5 |   |
| FERC-ordered      MISO resettlements –March      2007    |   |      | 32     |   |   |   | 13     |   |   |   | 4      |   |   |    | -      |   |   |   | 3      |   |   |   | 3 |   |   |   | 12 |   |
| Total      fuel and purchased power change                     |   | $         | 178    |   |   | $      | (4     | )      |   | $      | 44     |   |   | $       | 99     |   |   | $      | (16    | )      |   | $ | (16 | ) |   | $ | 49 |   |
| Net      change in electric margins                            |   | $         | 208    |   |   | $      | 132    |   |   | $      | (11    | )      |   | $       | 95     |   |   | $      | (5     | )      |   | $ | (5 | ) |   | $ | (7 | ) |
| Net      change in gas margins                                 |   | $         | 15     |   |   | $      | 4      |   |   | $      | 2      |   |   | $       | -      |   |   | $      | 5      |   |   | $ | 5 |   |   | $ | 4 |   |

| (a)   | Includes amounts for Ameren      registrant and nonregistrant subsidiaries and intercompany      eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

| ·   | Net      mark-to-market gains on energy and fuel-related transactions of $69      million and $92 million for the three and six months ended June 30, 2008,      respectively. These unrealized gains primarily related to financial      instruments that were acquired to mitigate the risk of rising diesel fuel      price adjustments embedded in coal transportation contracts for the period      2008 through 2012. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Lower      fuel expense as a result of Genco’s June 2008 agreement with a coal mine      owner to receive a lump-sum payment of $60 million for the early      termination of a contract. Genco is incurring incremental fuel costs in      2008 and in 2009 to replace coal from an Illinois mine that was      prematurely closed by its owner at the end of  2007. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | An      increase in margin on interchange sales of $29 million and $50 million for      the three and six months ended June 30, 2008, respectively, due to a 15%      increase in average sales prices in both the second quarter and first six      months of 2008 and increased hydroelectric generation due to improved      water levels. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      38-day planned refueling and maintenance outage at UE’s Callaway nuclear      plant in the second quarter of 2007 that did not recur in the second      quarter of 2008. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Increased      baseload coal-fired plant availability. These generating plants’ net      capacity and equivalent availability factors were approximately 76% and      84%, respectively, in 2008 compared with 75% and 82%, respectively, in      2007. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Reduced      net MISO purchased power costs of $19 million for the six months ended      June 30, 2008, due to the absence of the March 2007 FERC order that      resettled costs in 2007 among market participants retroactive to      2005. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | UE’s      electric rate increase that went into effect June 4, 2007, which increased      electric margin by an estimated $7 million and $16 million for the      three and six months ended June 30, 2008,  respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      16% and 13% increase in fuel prices for the second quarter and the first      six months of 2008, respectively.                                                                 |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ·   | The      Illinois electric settlement agreement, which reduced electric margin by      $8 million and $19 million for the three and six months ended June 30,      2008, respectively. |

| ·   | Implementation      of new seasonal delivery service tariffs at the Ameren Illinois Utilities,      effective January 2, 2008, decreased electric margin by $19 million for      the six months ended June 30, 2008. These new seasonal delivery service      tariffs will impact quarterly earnings comparisons but are not expected to      have any impact on annual margins. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Unfavorable      weather conditions, as evidenced by a 26% and 29% reduction in cooling      degree-days for the second |
|--------------------|-------------------------------------------------------------------------------------------------------------------------|

----

| ·   | Favorable      weather conditions, as evidenced by a 12% increase in heating degree-days,      increased margin an estimated $7million. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------|

| ·   | UE’s      gas rate increase that went into effect April 1, 2007, increased margin by      $3 million for the six months ended June 30,  2008. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Net      mark-to-market gains on energy and fuel-related transactions of $62      million and $72 million for the three and six months ended June 30, 2008,      respectively. These unrealized gains primarily related to financial      instruments that were acquired to mitigate the risk of rising diesel fuel      price adjustments embedded in coal transportation contracts for the period      2008 through 2012. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | An      increase in margin on interchange sales of $29 million and $50 million for      the three and six months ended June 30, 2008, respectively, due to a 15%      increase in average sales prices in both the second quarter and first six      months of 2008 and increased hydroelectric generation due to improved      water levels. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      38-day planned refueling and maintenance outage at Callaway nuclear plant      in the second quarter of 2007 that did not recur in the second quarter of      2008. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | UE’s      electric rate increase that went into effect June 4, 2007, which increased      electric margin by an estimated $7 million and $16 million for the three      and six months ended June 30, 2008,  respectively. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Reduced      MISO purchased power costs of $13 million for the six months ended June      30, 2008 due to the absence of the March 2007 FERC  order. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      12% and 14% increase in fuel prices for the second quarter and the first      six months of 2008, respectively. |
|--------------------|------------------------------------------------------------------------------------------------------------------------|

| ·   | Other      MISO purchased power costs, excluding the effect of the March 2007 FERC      order, increased $8 million and $9 million for the three and six months      ended June 30, 2008, respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Unfavorable      weather conditions, as evidenced by a 30% reduction in cooling      degree-days, decreased electric margin by an estimated $4 million and $3      million for the three and six months ended June 30, 2008,      respectively. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      implementation of new seasonal delivery service tariffs decreased electric      margin by $6 million for the six months ended June 30, 2008. These new      seasonal delivery service tariffs will impact quarterly earnings      comparisons but are not expected to have any impact on annual      margins. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Illinois electric settlement agreement, which reduced electric margin by      $1 million and $3 million for the three and six months ended June 30,      2008, respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Unfavorable      weather conditions, as evidenced by a 30% reduction in cooling      degree-days, decreased electric |
|--------------------|----------------------------------------------------------------------------------------------------------------------|

----

|                                 |   | Three      Months |   |   | Six      Months |   |
|--------------------------------------|--------|-------------------|--------|--------|-----------------|--------|
| CILCO      (Illinois Regulated)      |   | $                 | (9     | )      |            | $      | (2 | ) |
| CILCO      (AERG)                    |   |              | (3     | )      |            |   | (3 | ) |
| Total      change in electric margin |   | $                 | (12    | )      |            | $      | (5 | ) |

| ·   | Reductions      in delivery service margins during the second quarter of 2008 due to the      lack of favorable MISO resettlements experienced during the comparable      period last year. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      implementation of new seasonal delivery service tariffs decreased electric      margin by $3 million for the six months ended June 30, 2008. These new      seasonal delivery service tariffs will impact quarterly earnings      comparisons but are not expected to have any impact on annual      margins. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Illinois electric settlement agreement, which reduced electric margin by      $1 million and $2 million for the three and six months ended June 30,      2008, respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Unfavorable      weather conditions, as evidenced by a 26% reduction in cooling      degree-days, decreased electric margin by an estimated $1 million for both      the three and six months ended June 30, 2008,  respectively. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      implementation of new seasonal delivery service tariffs decreased electric      margin by $10 million for the six months ended June 30, 2008. These new      seasonal delivery service tariffs will impact quarterly earnings      comparisons but are not expected to have any impact on annual      margins. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Illinois electric settlement agreement, which reduced electric margin by      $2 million and $4 million for the three and six months ended June 30,      2008, respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Unfavorable      weather conditions, as evidenced by a 27% and 29% reduction in cooling      degree-days in the second quarter and first six months of 2008,      respectively, decreased electric margin by an estimated $3 million for      both the three and six months ended June 30,  2008. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | Net      mark-to-market gains on fuel related transactions of $23 million and $28      million for the three and six months ended June 30, 2008, respectively.      These unrealized gains primarily related to financial instruments that      were acquired to mitigate the risk of rising diesel fuel price adjustments      embedded in coal transportation contracts for the period 2008 through      2012. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | An      increase in average sales price per megawatthour allocated to Genco under      its power supply agreement (Genco PSA) with Marketing      Company. Marketing Company’s average revenue per megawatthour sold      under the Genco PSA increased 9% and 3% for the three and six months ended      June 30, 2008, respectively, compared with the same periods in 2007 due to      re-pricing of wholesale and retail electric power supply      agreements and higher spot market prices. Genco’s      allocated revenues increased 11% and 8% for the three and six months      ended June 30, 2008, respectively, compared with the same periods in 2007      due primarily to an increase in reimbursable expenses in accordance      with the Genco PSA. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | An      18% and 14% increase in fuel prices for the second quarter and the first      six months of 2008, respectively. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------|

| ·   | Reduced      MISO-related revenues of $8 million for the six months ended June 30,      2008, due to the absence of the March 2007 FERC  order. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Illinois electric settlement agreement, which reduced electric margin by      $5 million and $9 million for the three and six months ended June 30,      2008, respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      24% and 15% increase in coal prices for the second quarter and the six      months ended June 30, 2008, respectively, due to a greater percentage of      non-Powder River Basin coal burned this year. In addition, oil consumed      during plant startups increased. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      10% and an 18% decrease in average sales price per megawatthour allocated      to AERG under its power supply agreement (AERG PSA) with Marketing Company      for the three and six months ended June 30, 2008, respectively, due      primarily to a reduction in reimbursable expenses in accordance with the      AERG PSA. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Reduced      MISO-related revenues of $4 million for the six months ended June 30,      2008, due to the absence of the March 2007 FERC  order. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Illinois electric settlement agreement, which reduced electric margin by      $2 million and $4 million for the three and six months ended June 30,      2008, respectively. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Increased      baseload coal-fired plant availability due to the lack of an extended      plant outage this year. AERG’s generating plants’ average capacity and      equivalent availability factors for the six months ended June 30, 2008      were 70% and 77%, respectively, in 2008 compared with 55% and 60%,      respectively, in 2007. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Net      mark-to-market gains on fuel-related transactions of $7 million and $8      million for the three and six months ended June 30, 2008, respectively.      These unrealized gains primarily related to financial instruments that      were acquired to mitigate the risk of rising diesel fuel price adjustments      embedded in coal transportation contracts for the period 2008 through      2012. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | A      14% increase in the average sales price for power during the six months      ended June 30, 2008. |
|--------------------|----------------------------------------------------------------------------------------------------------|

| ·   | Net      mark-to-market gains on fuel-related transactions of $8 million for both      the three and six months ended June 30, 2008, respectively. These      unrealized gains primarily related to financial instruments that were      acquired to mitigate the risk of rising diesel fuel price adjustments      embedded in coal transportation contracts for the period 2008 through      2012. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | A      10% increase in fuel prices for the second quarter and the six months      ended June 30, 2008. |
|--------------------|--------------------------------------------------------------------------------------------------------|

| ·   | Decreased      baseload coal-fired plant availability. The generating plants’ average      capacity and equivalent availability factors for the three and six months      ended June 30, 2008 were 86% and 87%, respectively, in 2008 compared with      90% and 91%, respectively, in 2007. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

----

----

----

----

|                                                                                                                        | Net      Cash Provided ByOperating      Activities |   |   | Net      Cash Used InInvesting      Activities |   |   | Net      Cash Provided By(Used      In) Financing Activities |   |
|-----------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------|--------|--------|------------------------------------------------|--------|--------|--------------------------------------------------------------|--------|
|                                                                                                                        | 2008                                               |   |   | 2007                                           |   |   | Variance                                                     |   |   | 2008 |   |   | 2007 |   |   | Variance |   |   | 2008 |   |   | 2007 |   |   | Variance |   |
| Ameren (a)                   | $                                                  | 495    |   |                                           | $      | 543    |                                                         |   | $ | (48 | ) |   | $ | (935 | ) |   | $ | (754 | ) |   | $ | (181 | ) |   | $ | 290 |   |   | $ | 761 |   |   | $ | (471 | ) |
| UE                                |                                               | 115    |   |                                           |   | 145    |                                                         |   |   | (30 | ) |   |   | (509 | ) |   |   | (381 | ) |   |   | (128 | ) |   |   | 209 |   |   |   | 444 |   |   |   | (235 | ) |
| CIPS                              |                                               | 109    |   |                                           |   | 44     |                                                         |   |   | 65 |   |   |   | (2 | ) |   |   | (1 | ) |   |   | (1 | ) |   |   | (133 | ) |   |   | 99 |   |   |   | (232 | ) |
| Genco                             |                                               | 92     |   |                                           |   | 115    |                                                         |   |   | (23 | ) |   |   | (118 | ) |   |   | (81 | ) |   |   | (37 | ) |   |   | 26 |   |   |   | (34 | ) |   |   | 60 |   |
| CILCORP                           |                                               | 128    |   |                                           |   | 62     |                                                         |   |   | 66 |   |   |   | (141 | ) |   |   | (85 | ) |   |   | (56 | ) |   |   | 26 |   |   |   | 127 |   |   |   | (101 | ) |
| CILCO                             |                                               | 139    |   |                                           |   | 89     |                                                         |   |   | 50 |   |   |   | (139 | ) |   |   | (85 | ) |   |   | (54 | ) |   |   | 13 |   |   |   | 88 |   |   |   | (75 | ) |
| IP                                |                                               | 179    |   |                                           |   | 73     |                                                         |   |   | 106 |   |   |   | (79 | ) |   |   | (93 | ) |   |   | 14 |   |   |   | (73 | ) |   |   | 163 |   |   |   | (236 | ) |

| (a)  | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------|----------------------------------------------------------------------------------------------------------------|

----

----

----

| Credit      Facility                    | Expiration        | Amount      Committed | Amount      Available |
|-----------------------------------------|-------------------|-----------------------|-----------------------|
| Ameren,      UE and Genco:              |              |                  |                  |
| Multiyear revolving(a)                  | July      2010    | 1,150                 | 708(e)                |
| CIPS,      CILCORP, CILCO, IP and AERG: |              |                  |                  |
| 2007 Multiyear revolving(b)(c)          | January      2010 |         500 | 100                   |
| 2006 Multiyear revolving(b)(d)          | January      2010 |         500 | 150                   |

| (a)   | Ameren      Companies may access this credit facility through intercompany borrowing      arrangements. |
|-----------------|---------------------------------------------------------------------------------------------------------|

| (b)   | See      Note 3 – Short-term Borrowings and Liquidity to our financial statements      under Part I, Item 1, of this report for discussion of the amendments to      these facilities. |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (c)   | The      maximum amount available to each borrower under this facility at June 30,      2008, including for the issuance of letters of credit, was limited as      follows: CILCORP - $125 million, CILCO - $75 million, IP - $200 million      and AERG - $100 million. CIPS and CILCO have the option of permanently      reducing their ability to borrow under the 2006 $500 million credit      facility and shifting such capacity, up to the same limits, to the 2007      $500 million credit facility. In July 2007, CILCO shifted $75 million of      its sublimit under the 2006 $500 million credit facility to this      facility. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (d)   | The      maximum amount available to each borrower under this facility at June 30,      2008, including for issuance of letters of credit, was limited as follows:      CIPS - $135 million, CILCORP - $50 million, CILCO - $75 million, IP - $150      million and AERG - $200 million. In July 2007, CILCO shifted $75 million      of its capacity under this facility to the 2007 $500 million credit      facility. Accordingly, as of June 30, 2008, CILCO had a sublimit of $75      million under this facility and a $75 million sublimit under the 2007      credit facility. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (e)   | In      addition to amounts drawn on this facility, the amount available is      further reduced by standby letters of credit, which have been issued. The      amount of such letters of credit at June 30, 2008, was $9      million. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|                                                                        | Month      Issued, Redeemed, | Six      Months |   |
|-----------------------------------------------------------------------------|------------------------------|-----------------|--------|
|                                                                        | Repurchased      or Matured  | 2008            |   |   | 2007 |   |
| Issuances                                                                   |                         |            |   |   |   |   |
| Long-term      debt                                                         |                         |            |   |   |   |   |
| UE:                                                                         |                         |            |   |   |   |   |
| 6.00% Senior secured notes due      2018                                    | April                        | $               | 250    |   |   | $ | - |   |
| 6.40% Senior secured notes due      2017                                    | June                         |            | -      |   |   |   | 425 |   |
| 6.70% Senior secured notes due      2019                                    | June                         |            | 449    |   |   |   | - |   |
| Genco:                                                                      |                         |            |   |   |   |   |   |   |
| 7.00% Senior unsecured notes      due 2018                                  | April                        |            | 300    |   |   |   | - |   |
| IP:                                                                         |                         |            |   |   |   |   |   |   |
| 6.25% Senior secured notes due      2018                                    | April                        |            | 336    |   |   |   | - |   |
| Total      Ameren long-term debt issuances                                  |                         | $               | 1,335  |   |   | $ | 425 |   |
| Common      stock                                                           |                         |            |   |   |   |   |   |   |
| Ameren:                                                                     |                         |            |   |   |   |   |   |   |
| DRPlus and    401(k)                                                        | Various                      | $               | 75     |   |   | $ | 48 |   |
| Total      common stock issuances                                           |                         | $               | 75     |   |   | $ | 48 |   |
| Total      Ameren long-term debt and common stock issuances                 |                         | $               | 1,410  |   |   | $ | 473 |   |
| Redemptions,      Repurchases and Maturities                                |                         |            |   |   |   |   |   |   |
| Long-term      debt                                                         |                         |            |   |   |   |   |   |   |
| Ameren:                                                                     |                         |            |   |   |   |   |   |   |
| 2002 5.70% notes due      2007                                         | February                     | $               | -      |   |   | $ | 100 |   |
| Senior notes due      2007                                                  | May                          |            | -      |   |   |   | 250 |   |
| UE:                                                                         |                         |            |   |   |   |   |   |   |
| 2000 Series B environmental      improvement bonds due 2035                 | April                        |            | 63     |   |   |   | - |   |
| 2000 Series A environmental      improvement bonds due 2035                 | May                          |            | 64     |   |   |   | - |   |
| 2000 Series C environmental      improvement bonds due 2035                 | May                          |            | 60     |   |   |   | - |   |
| 1991 Series environmental      improvement bonds due 2020                   | May                          |            | 43     |   |   |   | - |   |
| 6.75% Series first mortgage      bonds due 2008                             | May                          |            | 148    |   |   |   | - |   |
| CIPS:                                                                       |                         |            |   |   |   |   |   |   |
| 2004 Series pollution control      bonds due 2025                           | April                        |            | 35     |   |   |   | - |   |
| CILCO:                                                                      |                         |            |   |   |   |   |   |   |
| 7.50% First mortgage bonds due      2007                               | January                      |            | -      |   |   |   | 50 |   |
| Series 2004 pollution control      bonds due 2039                           | April                        |            | 19     |   |   |   | - |   |
| IP:                                                                         |                         |            |   |   |   |   |   |   |
| Series 2001 Non-AMT bonds due      2028                                     | May                          |            | 112    |   |   |   | - |   |
| Series 2001 AMT bonds due      2017                                         | May                          |            | 75     |   |   |   | - |   |
| 1997 Series A pollution control      bonds due 2032                         | May                          |            | 70     |   |   |   | - |   |
| 1997 Series B pollution control      bonds due 2032                         | May                          |            | 45     |   |   |   | - |   |
| 1997 Series C pollution control      bonds due 2032                         | June                         |            | 35     |   |   |   | - |   |
| Note payable to IP      SPT:                                                |                         |            |   |   |   |   |   |   |
|  5.65% Series due      2008                                            | Various                      |            | 39     |   |   |   | 43 |   |
| Total      Ameren long-term debt redemptions, repurchases and    maturities |                         | $               | 808    |   |   | $ | 443 |   |

----

|         | EffectiveDate  | AuthorizedAmount        | Issued          | Available                        |
|--------------|----------------|-------------------------|-----------------|----------------------------------|
| Ameren  | June      2004 | $       2,000      | $  459     | $       1,541               |
| UE(a)        | June      2008 |        Not limited | 450             |        Not limited          |
| CIPS         | May      2001  |         250   |        211 |           39 |

| (a)   | In      June 2008, UE, as a well-known seasoned issuer, filed a Form S-3 shelf      registration statement registering the issuance of an indeterminate amount      of certain types of securities, which expires in June 2011. In June 2008,      UE issued $450 million principal amount of senior secured notes pursuant      to this shelf registrationstatement. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|                          |   | Six      Months |   |
|-------------------------------|--------|-----------------|--------|
|                          |   | 2008            |   |   | 2007 |   |
| UE                            |   | $               | 105    |   |   | $ | 127 |   |
| Genco                         |   |            | 84     |   |   |   | 113 |   |
| IP                            |   |            | 30     |   |   |   | - |   |
| Nonregistrants                |   |            | 47     |   |   |   | 23 |   |
| Dividends      paid by Ameren |   | $               | 266    |   |   | $ | 263 |   |

|                                | Moody’s | S&P | Fitch  |
|-------------------------------------|---------------|---------|--------|
| Ameren:                             |          |    |   |
| Issuer/corporate      credit rating | Baa2          | BBB-    | BBB+   |
| Senior      unsecured debt          | Baa2          | BB+     | BBB+   |
| Commercial      paper               | P-2           | A-3     | F2     |
| UE:                                 |          |    |   |
| Issuer/corporate      credit rating | Baa2          | BBB-    | A-     |
| Secured      debt                   | Baa1          | BBB     | A+     |
| Commercial      paper               | P-2           | A-3     | F2     |
| CIPS:                               |          |    |   |
| Issuer/corporate      credit rating | Ba1           | BB      | BB+    |
| Secured      debt                   | Baa3          | BBB     | BBB    |
| Senior      unsecured debt          | Ba1           | BBB-    | BBB-   |
| Genco:                              |          |    |   |
| Issuer/corporate      credit rating | -             | BBB-    | BBB+   |
| Senior      unsecured debt          | Baa2          | BBB-    | BBB+   |
| CILCORP:                            |          |    |   |
| Issuer/corporate      credit rating | -             | BB      | BB+    |
| Senior      unsecured debt          | Ba2           | BB      | BB+    |
| CILCO:                              |          |    |   |
| Issuer/corporate      credit rating | Ba1           | BB      | BB+    |
| Secured      debt                   | Baa2          | BBB     | BBB    |
| IP:                                 |          |    |   |
| Issuer/corporate      credit rating | Ba1           | BB      | BB+    |
| Secured      debt                   | Baa3          | BBB-    | BBB    |

----

| ·   | The      earnings of UE, CIPS, CILCO and IP are largely determined by the      regulation of their rates by state agencies. With rising costs, including      fuel and related transportation, purchased power, labor, material,      depreciation and financing costs, coupled with increased capital and      operations and maintenance expenditures targeted at enhanced distribution      system reliability and environmental compliance, Ameren, UE, CIPS, CILCO      and IP expect to experience regulatory lag until requests to increase      rates to recover such costs are granted by state regulators. Ameren, UE,      CIPS, CILCO and IP expect more frequent rate cases will be necessary in      the future. UE agreed not to file a natural gas delivery rate case before      March 15, 2010. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Ameren Illinois Utilities filed delivery service rate cases with the ICC      in November 2007 due to inadequate recovery of costs and low returns on      equity of less than 5% experienced in 2007 and less than 4% expected in      2008. The ICC staff recommended in their rebuttal testimony filed in May      2008 a net increase in revenues for electric delivery service for the      Ameren Illinois Utilities of $76 million in the aggregate (CIPS - $9      million increase, CILCO - $11 million decrease, and IP - $78 million      increase) and a net increase in revenues for natural gas delivery service      of $11 million in the aggregate (CIPS - $3 million increase, CILCO      - $15 million decrease, and IP - $23 million increase). Other parties      also made recommendations through rebuttal testimony in the rate cases.      The Ameren Illinois Utilities revised their revenue requests for electric      and natural gas delivery services to accept certain positions proposed by      the ICC staff and intervenors, including the ICC staff’s recommended      return on equity of 10.7%. In a brief filed with the ICC in July 2008,      CIPS, CILCO and IP revised their requests to an increase in annual      revenues for electric delivery service of $156 million in the aggregate      (CIPS - $26 million increase, CILCO - $3 million increase, and IP -      $127 million increase) and a net increase in annual revenues for natural      gas delivery service of $51 million in the aggregate (CIPS - $10 million      increase, CILCO - $7      million decrease, and IP - $48 million increase). The Ameren Illinois      Utilities’ electric and natural gas rate change requests were based on a      capital structure composed of 50% to 53% equity, an aggregate rate base      for the Ameren Illinois Utilities of $2 billion and $0.9 billion for      electric and natural gas, respectively, and a test year ended December 31,      2006, with certain prospective updates. The ICC has until the end of      September 2008 to render a decision in these rate  cases. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | UE      filed an electric rate case with the MoPSC in April 2008 in order to      recover rising costs and to earn a reasonable return on its investments.      UE’s return on equity was 9% in 2007 and is expected to decrease to |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | In      current and future rate cases, UE, CIPS, CILCO and IP will also seek cost      recovery mechanisms from their state regulators to reduce regulatory lag.      In their pending electric and natural gas delivery service rate cases, the      Ameren Illinois Utilities are requesting ICC approval to implement rate      adjustment mechanisms for electric infrastructure investments and the      decoupling of natural gas revenues from sales volumes. The ICC staff in      their direct testimony filed in March 2008 opposed the Ameren Illinois      Utilities’ requests to implement a rate adjustment mechanism for electric      infrastructure investments. The ICC staff offered limited support for the      Ameren Illinois Utilities’ request to implement a rate adjustment      mechanism for the decoupling of natural gas revenues from sales volumes.      In its pending electric rate case, UE is requesting the MoPSC to approve      implementation of a fuel and purchased power cost recovery      mechanism. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Average      residential electric rates for CIPS, CILCO and IP increased significantly      following the expiration of a rate freeze at the end of 2006. Electric      rates rose because of the increased cost of power purchased on behalf of      the Ameren Illinois Utilities’ customers and an increase in electric      delivery service rates. Due to the magnitude of these increases, the      Illinois electric settlement agreement reached in 2007 provides      approximately $1 billion over a four-year period that began in 2007 to      fund rate relief for certain electric customers in Illinois, including      approximately $488 million to customers of the Ameren Illinois Utilities.      Funding for the settlement is coming from electric generators in Illinois      and certain Illinois electric utilities. Pursuant to the Illinois electric      settlement agreement, the Ameren Illinois Utilities, Genco and AERG agreed      to fund an aggregate of $150 million, of which the following contributions      remain to be made as of June 30,2008: |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    |   Ameren                 | CIPS                   | CILCO(IllinoisRegulated)     | IP                     | Genco                  | CILCO(AERG)       |
|---------|------------------------------------|------------------------|------------------------------|------------------------|------------------------|-------------------|
| 2008(a) | $      21.6                        | $   3.3 | $   1.5       | $       4.5       | $        8.5 | $       3.8  |
| 2009(a) |          25.2       |  3.5              |        1.8              |  4.7              | 10.5                   |  4.7         |
| 2010(a) |            2.0 |  0.3              |        0.1              |  0.4              |        0.8        |  0.4         |
| Total   | $       48.8                  |  $  7.1 | $         3.4 | $        9.6 | $       19.8      | $        8.9 |

| ·   | As      part of the Illinois electric settlement agreement, the reverse auction      used for power procurement in Illinois was discontinued. It will be      replaced with a new power procurement process to be led by the IPA,      beginning in 2009. The impact of the new procurement process in Illinois      is uncertain. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | As      part of the Illinois electric settlement agreement, the Ameren Illinois      Utilities entered into financial contracts with Marketing Company (for the      benefit of Genco and AERG), to lock-in energy prices for 400 to 1,000      megawatts annually of their around-the-clock power requirements during the      period June 1, 2008 to December 31, 2012, at then relevant market prices.      These financial contracts do not include capacity, are not load-following      products and do not involve the physical delivery of    energy. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Volatile      power prices in the Midwest affect the amount of revenues Ameren, UE,      Genco, CILCO (through AERG) and EEI can generate by marketing power into      the wholesale and spot markets and influence the cost of power purchased      in the spot markets. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      availability and performance of UE’s, Genco’s, AERG’s and EEI’s electric      generation fleet can materially impact their revenues. Genco and AERG are      seeking to raise the equivalent availability and capacity factors of their      power plants over the long-term through greater investments and a process      improvement program. The Non-rate-regulated Generation segment expects to      generate 32 million megawatthours of baseload power in 2008 (Genco – 17      million, AERG – 7 million, EEI – 8 million), 31 million      megawatthours in 2009 (Genco –  16 million, AERG - 7 million,      EEI - 8 million) and 33 million megawatthours in 2010 (Genco - 18      million, AERG - 7 million, EEI - 8million). |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | All      but 5 million megawatthours of Genco’s and AERG’s pre-2006 wholesale and      retail electric power supply agreements expired during 2006. In 2007, 1      million megawatthours of these agreements, which had an average embedded      selling price of $35 per megawatthour, expired. Another 2 million      contracted megawatthours will expire in late 2008, which have an average      embedded selling price of $33 per megawatthour. These agreements are being      replaced with market-based sales. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      marketing strategy for the Non-rate-regulated Generation segment is to      optimize generation output in a low risk manner to minimize volatility of      earnings and cash flow, while seeking to capitalize on its low-cost      generation fleet to provide solid, sustainable returns. To accomplish this      strategy, the Non-rate-regulated Generation segment has established hedge      targets for near-term years. Through a mix of physical and financial sales      contracts, Marketing Company targets to hedge Non-rate-regulated      Generation’s expected output by 80% to 90% for the following year, 50% to      70% for two years out, and 30% to 50% for three years  out. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·    | As      of June 30, 2008, Ameren sold approximately 95% of its expected 2008      system-wide generation; approximately 5 million megawatthours of Ameren's      system-wide expected generation for the remainder of 2008 remained      unhedged.  As of June 30, 2008, Marketing Company sold approximately      80% of Non-rate-regulated Generation's expected 2009 generation;      approximately 6 million megawatthours of Non-rate-regulated Generation's      expected generation for 2009 remained unhedged.                                                                                                                                                                                                                                                                 |
|--------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ·    | Since      July 1, 2008, power prices have fallen sharply. Several factors appeared      to be driving this volatility, including the recent court decision that      vacated the Clean Air Interstate Rule, falling natural gas and crude      prices and the economy, among other things.  Deep declines in      power prices, should they persist, can have meaningful impacts on Ameren,      UE, Genco and AERG's financial results for 2008 and beyond.  We      cannot predict future power prices with certainty as market conditions are      unpredictable.  We believe that power prices will see modest      increases from current levels during the remainder of the summer cooling      and tropical storm seasons and over the next few    years.  |

| ·   | The      future development of ancillary services and capacity markets in MISO      could increase the electric margins of UE, Genco, AERG and EEI. Ancillary      services are services necessary to support the transmission of energy from      generation resources to loads while maintaining reliable operation of the      transmission provider’s system. In February 2008, FERC conditionally      accepted the ancillary services market tariff proposed by MISO. We expect      Non-rate-regulated Generation’s ancillary services market revenues to      increase to $15 million in 2008 from $5 million realized in 2007.      Ancillary services market revenues are allocated to Genco and AERG in      accordance with their power supply agreements with Marketing      Company. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | We      expect MISO will begin development of a capacity market once its ancillary      services market is in place. A capacity market allows participants to      purchase or sell capacity products that meet reliability requirements.      MISO is currently in the process of developing a centralized regional      wholesale ancillary services market, which is expected to begin during      2008. We expect capacity and energy prices to strengthen from current      levels because of improving market liquidity and decreasing reserve      margins in MISO. Non-rate-regulated Generation’s capacity revenues are      expected to increase to approximately $40 million in 2008 from $25 million      in 2007. EEI receives payment for 100% of its capacity sales under its      power supply agreement with Marketing Company. Capacity revenues are      allocated to Genco and AERG based on their generation in accordance with      their power supply agreements with Marketing  Company. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | We      expect continued economic growth in our service territory and market area      to benefit energy demand in 2008 and beyond, but higher energy prices and      challenging economic conditions could result in reduced demand from      customers, especially in Illinois. Future energy efficiency programs      developed by UE, CIPS, CILCO and IP and others could also result in      reduced demand for our electric generation and our electric and gas      transmission and distributionservices. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | In      2007, 84% of Ameren’s electric generation (UE - 76%, Genco - 96%, AERG -      99%, EEI - 100%) was supplied by coal-fired power plants. About 94% of the      coal used by these plants (UE - 97%, Genco - 88%, AERG - 92%, EEI - 100%)      was delivered by railroads from the Powder River Basin in Wyoming. In the      past, deliveries from the Powder River Basin have been restricted because      of rail maintenance, weather, and derailments. In June and early July      2008, severe Midwest flooding disrupted rail deliveries. However, as of      June 30, 2008, coal inventories for UE, Genco, AERG and EEI were adequate      and in excess of historical levels. Disruptions in coal deliveries could      cause UE, Genco, AERG and EEI to pursue a strategy that could include      reducing sales of power during low-margin periods, buying higher-cost      fuels to generate required electricity, and purchasing power from other      sources. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Genco      is incurring incremental fuel costs in 2008 and 2009 to replace coal from      an Illinois mine that was prematurely closed by its owner at the end of      2007. A settlement agreement with the coal mine owner was reached in June      2008 that fully reimbursed Genco, in the form of a lump-sum payment of $60      million, for increased costs for coal and transportation that it is      incurring in 2008 ($33 million) and expects to incur in 2009 ($27      million).  Since the entire settlement was recorded in 2008 earnings,      Ameren's and Genco's earnings in 2009 will be lower than they otherwise      would have been. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Ameren’s      fuel costs (including transportation) are expected to increase in 2008 and      beyond. See Item 3 - Quantitative and Qualitative Disclosures about Market      Risk of this report for additional information about the percentage of      fuel and transportation requirements that are price-hedged for 2008      through 2012. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | In      December 2005, there was a breach of the upper reservoir at UE’s Taum Sauk      pumped-storage hydroelectric facility. This resulted in significant      flooding in the local area, which damaged a state park. In January 2008,      the Circuit Court of Reynolds County, Missouri, approved UE’s November      2007 settlement agreement with the state of Missouri resolving the state’s      lawsuit and claims for damages and other relief related to the breach. In      addition, pursuant to the settlement agreement, UE is required to replace      the breached upper reservoir with a new reservoir, subject to FERC      authorization. UE received approval from FERC to rebuild the upper      reservoir in August 2007 and began construction in November 2007. The      estimated cost to rebuild the upper reservoir is in the range of $450      million. UE expects the Taum Sauk pumped-storage hydroelectric facility to      be out of service through early 2010. UE believes that substantially all      of the damages and liabilities caused by the breach, including costs      related to the settlement agreement with the state of Missouri, the cost      of rebuilding the plant, and the cost of replacement power, up to $8      million annually, will be covered by insurance. Insurance will not cover      lost electric margins and penalties paid to FERC. Under UE’s insurance      policies, all claims by or against UE are subject to review by its      insurance carriers. As a result of this breach, UE is engaged in      litigation initiated by certain private parties. We are unable to predict      the timing or outcomes of this |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | UE’s      Callaway nuclear plant’s next scheduled refueling and maintenance outage      in the fall of 2008 is expected to last 25 to 30 days. During a scheduled      outage, which occurs every 18 months, maintenance and purchased power      costs increase, and the amount of excess power available for sale      decreases, versus non-outage years. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Over      the next few years, we expect rising employee benefit costs as well as      higher insurance and security costs associated with additional measures we      have taken, or may need to take, at UE’s Callaway nuclear plant and at our      other facilities. Insurance premiums may also increase as a result of      insurance market conditions and loss experience, among other      things. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Bad      debts may increase due to rising electric and gas rates and economic      conditions. |
|--------------------|------------------------------------------------------------------------------------------------|

| ·   | As      we refinance our short-term and variable-rate debt into fixed-rate debt,      financing costs may increase. |
|--------------------|---------------------------------------------------------------------------------------------------------------------|

| ·   | We      are currently undertaking cost reduction and control initiatives      associated with the strategic sourcing of purchases and streamlining of      all aspects of our business. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Between      2008 and 2017, Ameren estimated that certain Ameren Companies would be      required to invest between   $4 billion and $5 billion to      retrofit their coal-fired power plants with pollution control equipment.      Costs for these types of projects continue to escalate. However, because      of the 2008 U.S. Court of Appeals for the District of Columbia decisions      to vacate the Clean Air Interstate Rule and the Clean Air Mercury Rule,      the timing and ultimate amount of these capital costs are under review at      this time. Any pollution control investments will result in decreased      plant availability during construction and significantly higher ongoing      operating expenses. Approximately 45% of this investment was expected to      be in Ameren’s regulated UE operations, and therefore was expected to be      recoverable from ratepayers. The recoverability of amounts expended in      non-rate-regulated operations will depend on whether market prices for      power adjust as a result of market conditions reflecting increased      environmental costs for generators. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Future      federal and state legislation or regulations that mandate limits on the      emission of greenhouse gases would result in significant increases in      capital expenditures and operating costs. Excessive costs to comply with      future legislation or regulations might force Ameren and other      similarly-situated electric power generators to close some coal-fired      facilities. In December 2007, Ameren issued a report on how it is      responding to the rising regulatory, competitive, and public pressure to      significantly reduce CO2 and      other emissions from current and proposed power plant operations. The      report included Ameren’s climate change strategy and activities, current      greenhouse gas emissions, and analysis with respect to plausible future      greenhouse gas scenarios; it is available on Ameren’s Web site.      Investments to control carbon emissions at Ameren’s coal-fired plants      would significantly increase future capital expenditures and operation and      maintenance expenses. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | UE      continues to evaluate its longer-term needs for new baseload and peaking      electric generation capacity. At this time, UE does not expect to require      new baseload generation capacity until 2018 to 2020. However, due to the      significant time required to plan, acquire permits for, and build a      baseload power plant, UE is actively studying future plant alternatives,      including those that would use coal or nuclear fuel. In July 2008, UE      filed a COLA with the NRC for a potential new nuclear plant at UE’s      existing Callaway County, Missouri nuclear plant site. In addition, UE has      also signed contracts for certain long lead-time equipment. Filing that      COLA and entering into these contracts does not mean a decision has been      made to build a nuclear plant. These are only the first steps in the      regulatory licensing and procurement process and are necessary actions to      preserve the option to develop a new nuclear plant. UE had to submit the      COLA to the NRC in 2008 to be eligible for incentives available under      provisions of the 2005 Energy Policy Act. We cannot predict whether or      when the NRC will approve the COLA. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | UE      intends to submit a license extension application with the NRC to extend      its Callaway nuclear plant’s operating license by twenty years so that the      operating license will expire in 2044. UE cannot predict whether or when      the NRC will approve the licenseextension. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Over      the next few years, we expect to make significant investments in our      electric and gas infrastructure and to incur increased operations and      maintenance expenses to improve overall system reliability. We are      projecting higher labor and material costs for these capital expenditures.      UE announced in July 2007 plans to spend $300 million over three years for      underground cabling and reliability improvement, $135 million ($45 million      per year) for tree-trimming, and $84 million over three years      (approximately $28 million per year) for circuit and device inspection and      repair. We would expect these costs or investments to be ultimately      recovered in rates. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Increased      investments for environmental compliance, reliability improvement, and new      baseload capacity will result in higher depreciation and financing      costs. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | The      Ameren Companies will incur significant capital expenditures over the next      five years for compliance with environmental regulations and to make      significant investments in their electric and gas utility infrastructure      to improve overall system reliability. Expenditures are expected to be      funded primarily with debt. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| ·   | As      required by the MoPSC, UE filed a study in November 2007 with the MoPSC      evaluating the costs and benefits of UE’s participation in MISO. UE’s      filing noted that there were a number of uncertainties associated with the      cost-benefit study, including issues associated with the UE-MISO service      agreement. In June 2008, a stipulation and agreement among UE, the MoPSC      staff, MISO and other parties to the proceeding was filed with the MoPSC,      which provides for UE’s continued, conditional MISO participation through      April 30, 2012. The stipulation and agreement provides UE the right to      seek permission from the MoPSC for early withdrawal from MISO if UE      determines that sufficient progress toward mitigating some of the      continuing uncertainties respecting its MISO participation is not being      made. The MoPSC has not acted on the stipulation and      agreement. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | Interest      Expense |   |   | Net      Income(a) |   |
|---------|-----------------------|--------|--------|--------------------|--------|
| Ameren  | $                     | 16     |   |               | $      | (10 | ) |
| UE      |                  | 3      |   |               |   | (2 | ) |
| CIPS    | (b                    | )      |   | (b                 | )      |
| Genco   |                  | -      |   |               |   | - |   |
| CILCORP |                  | 6      |   |               |   | (4 | ) |
| CILCO   |                  | 4      |   |               |   | (2 | ) |
| IP      |                  | 2      |   |               |   | (1 | ) |

| (a)   | Calculations      are based on an effective tax rate of38%. |
|-----------------|-------------------------------------------------------------|

| (b)   | Less      than $1 million |
|-----------------|---------------------------|

----

----

|                                                                                                                                                                                                                                                        | Net      Income(a) |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------|--------|
| Ameren(b)                                                | $                  | (16    | ) |
| UE                                                       |               | (7     | ) |
| Genco                                                    |               | (4     | ) |
| CILCO      (AERG)                                        |               | (1     | ) |
| EEI                                                      |               | (6     | ) |

| (a)   | Calculations      are based on an effective tax rate of38%. |
|-----------------|-------------------------------------------------------------|

| (b)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

|                                           |   | 2008   |   |   | 2009   |   |   |   | 2010 – 2012 |   |
|------------------------------------------------|--------|--------|--------|--------|--------|--------|--------|--------|-------------------|--------|
| Ameren:                                        |   |   |   |   |   |   |   |   |              |   |
| Coal                                           |   |   | 99     | %      |   |   | 99     | %      |              |   | 46 | % |
| Coal      transportation                       |   |   | 100    |   |   |   | 82     |   |              |   | 17 |   |
| Nuclear      fuel                              |   |   | 100    |   |   |   | 100    |   |              |   | 88 |   |
| Natural      gas for generation                |   |   | 50     |   |   |   | 4      |   |              |   | - |   |
| Natural      gas for distribution(a)           |   |   | 23     |   |   |   | 14     |   |              |   | 14 |   |
| Purchased      power for Illinois Regulated(b) |   |   | 97     |   |   |   | 80     |   |              |   | 51 |   |

----

----

|                                 |   | 2008   |   |   | 2009   |   |   |   | 2010 – 2012 |   |
|--------------------------------------|--------|--------|--------|--------|--------|--------|--------|--------|-------------------|--------|
| UE:                                  |   |   |   |   |   |   |   |   |              |   |
| Coal                            |   |   | 100    | %      |   |   | 100    | %      |              |   | 52 | % |
| Coal      transportation             |   |   | 100    |   |   |   | 96     |   |              |   | 31 |   |
| Nuclear      fuel                    |   |   | 100    |   |   |   | 100    |   |              |   | 88 |   |
| Natural      gas for generation      |   |   | 45     |   |   |   | 6      |   |              |   | - |   |
| Natural      gas for distribution(a) |   |   | 24     |   |   |   | 12     |   |              |   | 4 |   |
| CIPS:                                |   |   |   |   |   |   |   |   |              |   |   |   |
| Natural      gas for distribution(a) |   |   | 20     | %      |   |   | 17     | %      |              |   | 5 | % |
| Purchased      power(b)              |   |   | 97     |   |   |   | 80     |   |              |   | 51 |   |
| Genco:                               |   |   |   |   |   |   |   |   |              |   |   |   |
| Coal                            |   |   | 99     | %      |   |   | 100    | %      |              |   | 34 | % |
| Coal      transportation             |   |   | 100    |   |   |   | 98     |   |              |   | - |   |
| Natural      gas for generation      |   |   | 73     |   |   |   | -      |   |              |   | - |   |
| CILCORP/CILCO:                       |   |   |   |   |   |   |   |   |              |   |   |   |
| Coal      (AERG)                |   |   | 94     | %      |   |   | 90     | %      |              |   | 37 | % |
| Coal      transportation (AERG)      |   |   | 100    |   |   |   | 69     |   |              |   | - |   |
| Natural      gas for distribution(a) |   |   | 25     |   |   |   | 12     |   |              |   | 21 |   |
| Purchased      power(b)              |   |   | 97     |   |   |   | 80     |   |              |   | 51 |   |
| IP:                                  |   |   |   |   |   |   |   |   |              |   |   |   |
| Natural      gas for distribution(a) |   |   | 24     | %      |   |   | 16     | %      |              |   | 17 | % |
| Purchased      power(b)              |   |   | 97     |   |   |   | 80     |   |              |   | 51 |   |
| EEI:                                 |   |   |   |   |   |   |   |   |              |   |   |   |
| Coal                                 |   |   | 100    | %      |   |   | 100    | %      |              |   | 53 | % |
| Coal      transportation             |   |   | 100    |   |   |   | -      |   |              |   | - |   |

| (a)   | Represents      the percentage of natural gas price hedged for peak winter season of      November through March. The year 2008 represents November 2008 through      March 2009. The year 2009 represents November 2009 through March 2010.      This continues each successive year through March  2013. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Represents      the percentage of purchased power price-hedged for fixed-price residential      and small commercial customers with less than 1 megawatt of demand.      Includes the financial contracts that the Ameren Illinois Utilities      entered into with Marketing Company, effective August 28, 2007, and      additional financial contracts entered into with Marketing Company and      other suppliers, effective March 20, 2008, as part of the Illinois      electric settlement agreement. Larger customers are purchasing power from      the competitive markets. See Note 2 – Rate and Regulatory Matters and Note      9 – Commitments and Contingencies under Part I, Item 1, of this report for      a discussion of these financial contracts and the new power procurement      process pursuant to the Illinois electric settlement      agreement. |
|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|              |   | Coal        |   |   | Transportation |   |
|-------------------|--------|-------------|--------|--------|----------------|--------|
|              |   | FuelExpense |   |   | NetIncome(a)   |   |   | FuelExpense |   |   | NetIncome(a) |   |
| Ameren(b)         |   | $           | 37     |   |           | $      | (23 | ) |   | $ | 22 |   |   | $ | (13 | ) |
| UE                |   |        | 14     |   |           |   | (9 | ) |   |   | 10 |   |   |   | (6 | ) |
| Genco             |   |        | 14     |   |           |   | (9 | ) |   |   | 5 |   |   |   | (3 | ) |
| CILCORP           |   |        | 6      |   |           |   | (4 | ) |   |   | 2 |   |   |   | (1 | ) |
| CILCO      (AERG) |   |        | 6      |   |           |   | (4 | ) |   |   | 2 |   |   |   | (1 | ) |
| EEI               |   |        | 3      |   |           |   | (1 | ) |   |   | 5 |   |   |   | (3 | ) |

| (a)   | Calculations      are based on an effective tax rate of38%. |
|-----------------|-------------------------------------------------------------|

| (b)   | Includes      amounts for Ameren registrant and nonregistrant    subsidiaries. |
|-----------------|--------------------------------------------------------------------------------|

----

|                                                                                                  |   | Ameren(a) |   |   | UE     |   |   | CIPS   |   |   | Genco  |   |   | CILCORP/CILCO |   |   | IP     |   |
|-------------------------------------------------------------------------------------------------------|--------|-----------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|---------------|--------|--------|--------|--------|
| Three      Months                                                                                     |   |      |   |   |   |   |   |   |   |   |   |   |   |          |   |   |   |   |
| Fair      value of contracts at beginning of period, net                                              |   | $         | 13     |   |   | $      | (1     | )      |   | $      | 58     |   |   | $             | (14    | )      |   | $      | 40 |   |   | $ | 102 |   |
| Contracts      realized or otherwise settled during the period                                        |   |      | (27    | )      |   |   | (3     | )      |   |   | (3     | )      |   |          | 5      |   |   |   | (6 | ) |   |   | (8 | ) |
| Changes      in fair values attributable to changes in valuation      technique and assumptions  |   |      | -      |   |   |   | -      |   |   |   | -      |   |   |          | -      |   |   |   | - |   |   |   | - |   |
| Fair      value of new contracts entered into during the period                                       |   |      | 21     |   |   |   | (2     | )      |   |   | 7      |   |   |          | -      |   |   |   | 2 |   |   |   | 5 |   |
| Other      changes in fair value                                                                      |   |      | 116    |   |   |   | 17     |   |   |   | 50     |   |   |          | 13     |   |   |   | 41 |   |   |   | 96 |   |
| Fair      value of contracts outstanding at end of period, net                                        |   | $         | 123    |   |   | $      | 11     |   |   | $      | 112    |   |   | $             | 4      |   |   | $      | 77 |   |   | $ | 195 |   |
| Six      Months                                                                                       |   |      |   |   |   |   |   |   |   |   |   |   |   |          |   |   |   |   |   |   |   |   |   |   |
| Fair      value of contracts at beginning of period, net                                              |   | $         | 13     |   |   | $      | 7      |   |   | $      | 38     |   |   | $             | (4     | )      |   | $      | 21 |   |   | $ | 55 |   |
| Contracts      realized or otherwise settled during the period                                        |   |      | (32    | )      |   |   | (6     | )      |   |   | (3     | )      |   |          | 5      |   |   |   | (7 | ) |   |   | (4 | ) |
| Changes      in fair values attributable to changes invaluation      technique and assumptions   |   |      | -      |   |   |   | -      |   |   |   | -      |   |   |          | -      |   |   |   | - |   |   |   | - |   |
| Fair      value of new contracts entered into during the period                                       |   |      | 36     |   |   |   | (3     | )      |   |   | 7      |   |   |          | 1      |   |   |   | 2 |   |   |   | 3 |   |
| Other      changes in fair value                                                                      |   |      | 106    |   |   |   | 13     |   |   |   | 70     |   |   |          | 2      |   |   |   | 61 |   |   |   | 141 |   |
| Fair      value of contracts outstanding at end of period, net                                        |   | $         | 123    |   |   | $      | 11     |   |   | $      | 112    |   |   | $             | 4      |   |   | $      | 77 |   |   | $ | 195 |   |

| (a)   | Includes      amounts for Ameren registrant and nonregistrant subsidiaries and      intercompany eliminations. |
|-----------------|----------------------------------------------------------------------------------------------------------------|

|   Sources      of Fair Value                                                                                                                                                                                                                                                                                                        |   | MaturityLess      than1      Year |   |   | Maturity1-3      Years |   |   | Maturity4-5      Years |   |   | Maturity      inExcess      of5      Years |   |   | TotalFair      Value |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------|--------|--------|------------------------|--------|--------|------------------------|--------|--------|--------------------------------------------|--------|--------|----------------------|--------|
| Ameren:                                                                                                                                                                                                                                                                                                                                       |   |                              |   |   |                   |   |   |                   |   |   |                                       |   |   |                 |   |
| Level      1                                                         |   | $                                 | 2      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | 2 |   |
| Level      2(a)                                                      |   |                              | (64    | )      |                   |   | (17    | )                      |   |   | -                                          |   |   |                 | -      |   |   |   | (81 | ) |
| Level      3(b)                                                      |   |                              | 99     |   |                   |   | 96     |                   |   |   | 7                                          |   |   |                 | -      |   |   |   | 202 |   |
| Total                                                                |   | $                                 | 37     |   |                   | $      | 79     |                   |   | $      | 7                                          |   |   | $                    | -      |   |   | $ | 123 |   |
| UE:                                                                                                                                                                                                                                                                                                                                           |   |                              |   |   |                   |   |   |                   |   |   |                                       |   |   |                 |   |   |   |   |   |   |
| Level      1                                                         |   | $                                 | -      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | - |   |
| Level      2(a)                                                      |   |                              | (28    | )      |                   |   | (1     | )                      |   |   | -                                          |   |   |                 | -      |   |   |   | (29 | ) |
| Level      3(b)                                                      |   |                              | 33     |   |                   |   | 6      |                   |   |   | 1                                          |   |   |                 | -      |   |   |   | 40 |   |
| Total                                                                |   | $                                 | 5      |   |                   | $      | 5      |                   |   | $      | 1                                          |   |   | $                    | -      |   |   | $ | 11 |   |
| CIPS:                                                                                                                                                                                                                                                                                                                                         |   |                              |   |   |                   |   |   |                   |   |   |                                       |   |   |                 |   |   |   |   |   |   |
| Level      1                                                         |   | $                                 | -      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | - |   |
| Level      2(a)                                                      |   |                              | -      |   |                   |   | -      |                   |   |   | -                                          |   |   |                 | -      |   |   |   | - |   |
| Level      3(b)                                                      |   |                              | 37     |   |                   |   | 50     |                   |   |   | 25                                         |   |   |                 | -      |   |   |   | 112 |   |
| Total                                                                |   | $                                 | 37     |   |                   | $      | 50     |                   |   | $      | 25                                         |   |   | $                    | -      |   |   | $ | 112 |   |
| Genco:                                                                                                                                                                                                                                                                                                                                        |   |                              |   |   |                   |   |   |                   |   |   |                                       |   |   |                 |   |   |   |   |   |   |
| Level      1                                                         |   | $                                 | -      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | - |   |
| Level      2(a)                                                      |   |                              | -      |   |                   |   | -      |                   |   |   | -                                          |   |   |                 | -      |   |   |   | - |   |
| Level      3(b)                                                      |   |                              | 4      |   |                   |   | -      |                   |   |   | -                                          |   |   |                 | -      |   |   |   | 4 |   |
| Total                                                                |   | $                                 | 4      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | 4 |   |
| CILCORP/CILCO:                                                                                                                                                                                                                                                                                                                                |   |                              |   |   |                   |   |   |                   |   |   |                                       |   |   |                 |   |   |   |   |   |   |
| Level      1                                                         |   | $                                 | -      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | - |   |
| Level      2(a)                                                      |   |                              | -      |   |                   |   | -      |                   |   |   | -                                          |   |   |                 | -      |   |   |   | - |   |
| Level      3(b)                                                      |   |                              | 32     |   |                   |   | 33     |                   |   |   | 12                                         |   |   |                 | -      |   |   |   | 77 |   |
| Total                                                                |   | $                                 | 32     |   |                   | $      | 33     |                   |   | $      | 12                                         |   |   | $                    | -      |   |   | $ | 77 |   |
| IP:                                                                                                                                                                                                                                                                                                                                           |   |                              |   |   |                   |   |   |                   |   |   |                                       |   |   |                 |   |   |   |   |   |   |
| Level      1                                                         |   | $                                 | -      |   |                   | $      | -      |                   |   | $      | -                                          |   |   | $                    | -      |   |   | $ | - |   |
| Level      2(a)                                                      |   |                              | -      |   |                   |   | -      |                   |   |   | -                                          |   |   |                 | -      |   |   |   | - |   |
| Level      3(b)                                                      |   |                              | 73     |   |                   |   | 88     |                   |   |   | 34                                         |   |   |                 | -      |   |   |   | 195 |   |
| Total                                                                |   | $                                 | 73     |   |                   | $      | 88     |                   |   | $      | 34                                         |   |   | $                    | -      |   |   | $ | 195 |   |

| (a)   | Principally      fixed price for floating over-the-counter power swaps, power forwards and      fixed price for floating over-the-counter natural gas    swaps. |
|-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)   | Principally      coal and SO2      option values based on a Black-Scholes model that includes information      from external sources and our estimates. Also includes interruptible power      forward and option contract values based on our  estimates. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| (a)   | Evaluation      of Disclosure Controls andProcedures |
|-----------------|------------------------------------------------------|

| (b)   | Change      in Internal Controls |
|-----------------|----------------------------------|

----

|  Period                                                                                                                                                                                                                                                     | (a)      Total Numberof      Shares(or      Units) Purchased(a) | (b)      Average PricePaid      per Share(or      Unit) | (c)      Total Number of Shares (or      Units) Purchased as Part of      Publicly Announced Plans or      Programs | (d)      Maximum Number (or Approximate      Dollar Value) of      Shares (or Units) that May Yet Be      Purchased Under the Plans or      Programs |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------|---------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|
| April      1 – April 30,      2008                                     | 4,437                                                           | $     45.45                    | -                                                                                                                   | -                                                                                                                                                    |
| May      1 – May 31,      2008                                         |             -                          | -                                                       | -                                                                                                                   | -                                                                                                                                                    |
| June      1 – June 30,      2008                                       |             -                     | -                                                       | -                                                                                                                   | -                                                                                                                                                    |
| Total                                                                        | 4,437                                                           | $     45.45                    | -                                                                                                                   | -                                                                                                                                                    |

| (a) | Included      in April were 4,187 shares of Ameren common stock purchased by Ameren in      open-market transactions pursuant to Ameren’s obligation upon the exercise      by employees of options issued under Ameren’s Long-term Incentive Plan of      1998, as amended.  Also included in April were 250 shares of      Ameren common stock purchased by Ameren from employee participants to      satisfy participants’ tax obligations incurred by the release of      restricted shares of Ameren common stock under Ameren’s Long-term      Incentive Plan of 1998.  Ameren does not have any publicly      announced equity securities repurchase plans or  programs. |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Name                       | For         | Withheld  | Broker      Non-Votes(a) |
|----------------------------|-------------|-----------|--------------------------|
| Stephen      F. Brauer     | 177,485,438 | 4,014,368 | -                        |
| Susan      S. Elliott      | 177,272,822 | 4,226,984 | -                        |
| Walter      J. Galvin      | 177,540,798 | 3,959,008 | -                        |
| Gayle      P. W. Jackson   | 177,500,222 | 3,999,584 | -                        |
| James      C. Johnson      | 177,439,140 | 4,060,666 | -                        |
| Charles      W. Mueller    | 177,009,109 | 4,490,697 | -                        |
| Douglas      R. Oberhelman | 177,354,420 | 4,145,386 | -                        |
| Gary      L. Rainwater     | 176,991,219 | 4,508,587 | -                        |
| Harvey      Saligman       | 176,878,439 | 4,621,367 | -                        |
| Patrick      T. Stokes     | 177,347,025 | 4,152,781 | -                        |
| Jack      D. Woodard       | 177,250,277 | 4,249,529 | -                        |

| (a)   | Broker      shares included in the quorum but not voting on the  item. |
|-----------------|------------------------------------------------------------------------|

| Item      (2) | Ameren      proposal regarding ratification of the appointment of      PricewaterhouseCoopers LLP as Ameren’s independent registered public      accountants for the fiscal year ending December 31,  2008. |
|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| For         | Against   | Abstain   | Broker      Non-Votes(a) |
|-------------|-----------|-----------|--------------------------|
| 177,719,424 | 1,394,269 | 2,386,113 | -                        |

| (a)   | Broker      shares included in the quorum but not voting on the  item. |
|-----------------|------------------------------------------------------------------------|

|   | Item      (3) | Shareholder      proposal relating to releases from UE’s Callaway nuclear      plant. |
|--------|---------------|---------------------------------------------------------------------------------------------|

| For        | Against     | Abstain    | Broker      Non-Votes(a) |
|------------|-------------|------------|--------------------------|
| 13,314,278 | 121,764,076 | 13,942,985 | 32,478,467               |

| (a)   | Broker      shares included in the quorum but not voting on the  item. |
|-----------------|------------------------------------------------------------------------|

----

----

| Exhibit      Designation                                                      | Registrant(s)         | Nature      of Exhibit                                                                                                                                                                                                                                                                                                                | Previously      Filed as Exhibit to:                              |
|-------------------------------------------------------------------------------|-----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------|
| By-Laws                                                                       |
| 3.1(ii)                                                                       | UE                    | By-Laws      of UE as amended July 28, 2008                                                                                                                                                                                                                                                                                           | July      29, 2008 Form 8-K, Exhibit 3.1(ii), File No. 1-2967     |
| 3.2(ii)                                                                       | CIPS                  | By-Laws      of CIPS as amended July 28, 2008                                                                                                                                                                                                                                                                                         | July      29, 2008 Form 8-K, Exhibit 3.2(ii), File No. 1-3672     |
| 3.3(ii)                                                                       | CILCO                 | By-Laws      of CILCO as amended July 28, 2008                                                                                                                                                                                                                                                                                        | July      29, 2008 Form 8-K, Exhibit 3.3(ii), File No. 1-2732     |
| 3.4(ii)                                                                       | IP                    | By-Laws      of IP as amended July 28, 2008                                                                                                                                                                                                                                                                                           | July      29, 2008 Form 8-K, Exhibit 3.4(ii), File No. 1-3004     |
| Instruments      Defining Rights of Securities Holders, Including  Indentures |
| 4.1                                                                           | Ameren           | First      Supplemental Indenture dated as of May 19, 2008 amending the Ameren      Indenture dated as of December, 2001 and effecting the resignation of The      Bank of New York, as trustee and appointment of The Bank of New York      Mellon Trust Company, N.A. as successor trustee                                          |                                                              |
| 4.2                                                                           | AmerenUE              | UE      Company Order dated June 19, 2008, establishing the 6.70% Senior Secured      Notes due 2019 (including the global note)                                                                                                                                                                                                      | June      19, 2008 Form 8-K, Exhibits 4.2 and 4.3, File No.1-2967 |
| 4.3                                                                           | AmerenUE              | Supplemental      Indenture dated as of June 1, 2008 by and between UE and The Bank of New      York Mellon, as trustee under the Indenture of Mortgage and Deed of Trust      dated June 15, 1937, as amended, relating to UE First Mortgage Bonds,      Senior Notes Series MM securing UE 6.70% Senior Secured Notes due      2019 | June      19, 2008 Form 8-K, Exhibit 4.5, File No. 1-2967         |
| Material      Contracts                                                       |
| 10.1                                                                          | Ameren      Companies | *      Ameren Supplemental Retirement Plan amended and restated effective January      1, 2008, dated June 13, 2008                                                                                                                                                                                                                   |                                                              |
| 10.2                                                                          | Ameren      Companies | *      Ameren 2008 Deferred Compensation Plan                                                                                                                                                                                                                                                                                         |                                                              |
| 10.3                                                                          | Ameren                | *      Ameren Deferred Compensation Plan for members of the Board of Directors      amended and restated effective January 1, 2009, dated June 13,      2008                                                                                                                                                                          |                                                              |
| 10.4                                                                          | Ameren                | Credit      Agreement dated as of June 25, 2008, between Ameren and JPMorgan Chase      Bank, N.A., as agent                                                                                                                                                                                                                          | June      27, 2008 Form 8-K, Exhibit 10.1, File No. 1-14756       |
| Statement      re: Computation of Ratios                                      |                  |
| 12.1                                                                          | Ameren                | Ameren’s      Statement of Computation of Ratio of Earnings to Fixed    Charges                                                                                                                                                                                                                                                 |                                                              |
| 12.2                                                                          | UE                    | UE’s      Statement of Computation of Ratio of Earnings to Fixed Charges and      Combined Fixed Charges and Preferred Stock Dividend      Requirements                                                                                                                                                                         |                                                              |

----

----

| Exhibit      Designation                       | Registrant(s) | Nature      of Exhibit                                                                                                                                           | Previously      Filed as Exhibit to: |
|------------------------------------------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------|
| 12.3                                           | CIPS          | CIPS’      Statement of Computation of Ratio of Earnings to Fixed Charges and      Combined Fixed Charges and Preferred Stock Dividend      Requirements   |                                 |
| 12.4                                           | Genco         | Genco’s      Statement of Computation of Ratio of Earnings to Fixed    Charges                                                                             |                                 |
| 12.5                                           | CILCORP       | CILCORP’s      Statement of Computation of Ratio of Earnings to Fixed    Charges                                                                           |                                 |
| 12.6                                           | CILCO         | CILCO’s      Statement of Computation of Ratio of Earnings to Fixed Charges and      Combined Fixed Charges and Preferred Stock Dividend      Requirements |                                 |
| 12.7                                           | IP            | IP’s      Statement of Computation of Ratio of Earnings to Fixed Charges and      Combined Fixed Charges and Preferred Stock Dividend      Requirements    |                                 |
| Rule      13a-14(a) / 15d-14(a) Certifications |          |
| 31.1                                           | Ameren        | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      Ameren                                                                        |                                 |
| 31.2                                           | Ameren        | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      Ameren                                                                        |                                 |
| 31.3                                           | UE            | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      UE                                                                            |                                 |
| 31.4                                           | UE            | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      UE                                                                            |                                 |
| 31.5                                           | CIPS          | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      CIPS                                                                          |                                 |
| 31.6                                           | CIPS          | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      CIPS                                                                          |                                 |
| 31.7                                           | Genco         | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      Genco                                                                         |                                 |
| 31.8                                           | Genco         | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      Genco                                                                         |                                 |
| 31.9                                           | CILCORP       | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      CILCORP                                                                       |                                 |
| 31.10                                          | CILCORP       | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      CILCORP                                                                       |                                 |
| 31.11                                          | CILCO         | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      CILCO                                                                         |                                 |
| 31.12                                          | CILCO         | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      CILCO                                                                         |                                 |
| 31.13                                          | IP            | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive Officer of      IP                                                                            |                                 |
| 31.14                                          | IP            | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial Officer of      IP                                                                            |                                 |
| Section      1350 Certifications               |          |
| 32.1                                           | Ameren        | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of Ameren                                                    |                                 |
| 32.2                                           | UE            | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of UE                                                        |                                 |

----

----

| Exhibit      Designation | Registrant(s) | Nature      of Exhibit                                                                                         | Previously      Filed as Exhibit to: |
|--------------------------|---------------|----------------------------------------------------------------------------------------------------------------|--------------------------------------|
| 32.3                     | CIPS          | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of CIPS    |                                 |
| 32.4                     | Genco         | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of Genco   |                                 |
| 32.5                     | CILCORP       | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of CILCORP |                                 |
| 32.6                     | CILCO         | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of CILCO   |                                 |
| 32.7                     | IP            | Section      1350 Certification of Principal Executive Officer and Principal Financial      Officer of IP      |                                 |

----

----