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Ameren Announces Second Quarter 2008 Earnings
- Core Earnings Consistent With Expectations; 2008 Guidance Reaffirmed
- Rising Cost Environment Leads to Quarterly Loss in Illinois Regulated Operations
- Significant, Unusual Items Boost GAAP Earnings
PRNewswire-FirstCall
ST. LOUIS
(NYSE:AEE)

ST. LOUIS, Aug. 1 /PRNewswire-FirstCall/ -- Ameren Corporation (NYSE: AEE) today announced second quarter 2008 net income in accordance with generally accepted accounting principles (GAAP) of $206 million, or 98 cents per share, compared to second quarter 2007 GAAP net income of $143 million, or 69 cents per share. Excluding certain items in each year, Ameren recorded second quarter 2008 core (non-GAAP) net income of $142 million, or 67 cents per share, compared with second quarter 2007 core (non-GAAP) net income of $138 million, or 67 cents per share.

Core (non-GAAP) earnings per share in the second quarter of 2008 were comparable with the same period in 2007. Higher electric and gas margins and the benefit of not having a Callaway Nuclear Plant refueling and maintenance outage in the second quarter of 2008, as occurred in the second quarter of 2007, were largely offset by the following factors: higher fuel prices, increased spending on utility distribution system reliability, coal-fired plant operations and maintenance and other operating expenses, and the earnings impact of milder weather.

GAAP earnings in the second quarter of 2008 exceeded the same period in 2007 because of several significant, unusual items. The net effect of these items has been excluded from core (non-GAAP) earnings comparisons. They include the following:

  --  Net unrealized mark-to-market gains from nonqualifying hedges boosted
      second quarter 2008 net income by $48 million, as compared to net
      unrealized gains of $5 million in the second quarter of 2007. 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. The value of nonqualifying hedges will vary over time based on
      current market prices.

  --  A lump-sum payment in the second quarter of 2008 from a coal supplier
      for expected higher fuel costs in 2009 as a result of the premature
      closure of a mine and termination of a contract. This payment
      benefited second quarter 2008 net income by $16 million, but will
      result in higher fuel costs for non-rate-regulated generation in 2009.

  --  The estimated minimum benefit of an accounting order from the Missouri
      Public Service Commission that gave AmerenUE the ability to seek
      direct recovery in its pending electric rate case of, and record as a
      regulatory asset, all or a portion of AmerenUE's 2007 severe storm
      costs. This accounting order benefited second quarter 2008 net income
      by $8 million.

  --  The net costs associated with the Illinois comprehensive electric rate
      relief and customer assistance settlement agreement reached in 2007
      reduced net income by $8 million in the second quarter of 2008.

Net income in accordance with GAAP for the first six months of 2008 was $344 million, or $1.64 per share, compared to $266 million, or $1.29 per share, in the first half of 2007. Excluding certain items in each year, Ameren recorded first half 2008 core (non-GAAP) net income of $276 million, or $1.31 per share, compared to first half 2007 core (non-GAAP) net income of $283 million, or $1.38 per share. A reconciliation of GAAP to core (non-GAAP) earnings per share is as follows:

                              Second Quarter             Six Months
                            2008         2007         2008         2007
  GAAP earnings per share  $0.98        $0.69        $1.64        $1.29
    Net unrealized
     mark-to-market gains  (0.23)       (0.02)       (0.28)           -
    Coal contract
     settlement            (0.08)           -        (0.08)           -
    Severe storms &
     accounting order      (0.04)           -        (0.04)        0.09
    Retroactive federal
     regulatory order          -            -            -         0.05
    Illinois electric rate
     relief settlement, net 0.04            -         0.07        (0.05)
  Core (non-GAAP) earnings
   per share               $0.67        $0.67        $1.31        $1.38

"Our core earnings for the first half of 2008 were consistent with our expectations, but some unusual items drove our GAAP earnings higher," said Gary L. Rainwater, chairman, president and chief executive officer of Ameren Corporation. "Like our customers are seeing for everyday items, our business is experiencing significant cost increases. This is occurring during a period when we also need to make substantial investments in our systems for improved reliability and cleaner air. We have proactively taken actions to manage these cost increases, especially as they relate to our fuel costs. To date, our actions have been very effective, but we simply can not entirely eliminate the rising costs which are impacting many aspects of our business.

"These cost pressures, coupled with significant investments in our utility infrastructure, have required us to seek rate increases for both our Illinois and Missouri regulated operations. We expect decisions on these rate requests from Illinois and Missouri regulators in September 2008 and February 2009, respectively. Achieving constructive outcomes in these cases is critical to our ability to continue to invest in our infrastructure so that we will be able to meet our customers' expectations for safe and reliable service," added Rainwater.

Ameren also announced today that it has reaffirmed its expectations for core (non-GAAP) earnings to be in the range of $2.80 to $3.20 per share. Excluded from 2008 core (non-GAAP) earnings guidance is an estimated 12 cents per share negative impact of the Illinois comprehensive electric rate relief and customer assistance settlement agreement, the 8 cents per share benefit from the coal contract settlement related to expected 2009 costs and the 4 cents per share positive impact of a Missouri Public Service Commission accounting order associated with 2007 storm costs. Ameren also reaffirmed the contribution its business segments are expected to make to 2008 core (non- GAAP) earnings per share. The expected contributions are as follows:

  Missouri Regulated                                 $1.20 - $1.30
  Illinois Regulated                                  0.30 -  0.40
  Non-rate-regulated Generation                       1.30 -  1.50
    2008 Core (Non-GAAP) Earnings Guidance Range     $2.80 - $3.20

Ameren also adjusted its expectations for 2008 GAAP earnings and looks for them to be in the range of $2.80 to $3.20 per share, up from the previous estimate of $2.68 to $3.08 per share. The increase in its GAAP earnings guidance range was driven by the 8 cents per share benefit from the coal contract settlement related to expected 2009 costs and the 4 cents per share positive impact of the Missouri Public Service Commission accounting order, as previously discussed. Any net unrealized mark-to-market gains or losses from nonqualifying hedges will impact GAAP earnings, but are excluded from GAAP and core (non-GAAP) earnings guidance because the company is unable to reasonably estimate the impact of any gains or losses due to the volatility of markets.

Ameren's guidance for 2008 assumes normal weather and is subject to, among other things, regulatory decisions and legislative actions, plant operations, energy market and economic conditions, severe storms, unusual or otherwise unexpected gains or losses, and other risks and uncertainties outlined, or referred to, in the Forward-looking Statements section of this press release.

Missouri Regulated Operations

Core (non-GAAP) earnings in the second quarter of 2008 were $77 million, compared to $68 million in the second quarter of 2007. Earnings in the second quarter of 2008 primarily benefited from the lack of a refueling and maintenance outage at the Callaway Nuclear Plant, as occurred in the second quarter of 2007, and higher power prices for off-system sales. These improvements more than offset higher fuel prices, increased distribution system reliability and plant maintenance spending and other higher operating costs. GAAP earnings in the second quarter of 2008 were $122 million, or $55 million higher than in the second quarter of 2007. In addition to the items noted above, this increase was primarily driven by net unrealized mark-to- market gains from nonqualifying hedges of future fuel transportation costs and the estimated minimum benefit of an accounting order from the Missouri Public Service Commission associated with 2007 storm costs. The value of the nonqualifying hedges will fluctuate over time based on current market prices.

Illinois Regulated Operations

In the second quarter of 2008, Illinois regulated operations recorded a core (non-GAAP) loss of $10 million, compared to earnings of $20 million in the second quarter of 2007. This decrease was primarily driven by increased distribution system reliability spending, higher bad debt expenses and increased financing costs. Illinois regulated operations recorded a GAAP loss of $14 million, compared to earnings of $20 million in the second quarter of 2007. In addition to the items noted above, this difference was driven by the cost of the Illinois comprehensive electric rate relief and customer assistance settlement agreement in 2008.

Non-rate-regulated Generation Operations

Core (non-GAAP) earnings in the second quarter of 2008 were $77 million, or $27 million higher than in the second quarter of 2007. The increase in core (non-GAAP) earnings between the second quarter of 2007 and the second quarter of 2008 was primarily driven by higher realized electric margins. GAAP earnings in the second quarter of 2008 were $98 million, compared with $56 million in the second quarter of 2007. In addition to the items noted above, this change was driven by net unrealized mark-to-market gains principally from nonqualifying hedges of future fuel transportation costs and a lump-sum payment in the second quarter of 2008 from a coal supplier for expected higher fuel costs in 2009 as a result of the premature closure of a mine and termination of a contract. This payment benefited 2008 second quarter net income by $16 million, but will result in higher fuel costs for non-rate- regulated generation in 2009. The benefit of these items more than offset the costs of the Illinois comprehensive electric rate relief and customer assistance settlement agreement in the second quarter of 2008.

Analyst Conference Call

Ameren will conduct a conference call for financial analysts at 9:00 a.m. (Central Time) on Friday, Aug. 1, to discuss 2008 second quarter earnings and other matters. Investors, the news media and the public may listen to a live Internet broadcast of the call at http://www.ameren.com/ by clicking on "Q2 2008 Ameren Corporation Earnings Conference Call," then the appropriate audio link. A slide presentation will also be available on Ameren's Web site reconciling earnings per share for the second quarter and first six months of 2008 to the second quarter and first six months of 2007, and reconciling 2008 core (non- GAAP) earnings per share guidance to 2007 core (non-GAAP) earnings per share on a comparable share basis. This presentation will be posted in the "Investors" section of the Web site under "Presentations." The analyst call will also be available for replay on the Internet for one year. Telephone playback of the conference call will also be available beginning at 1:00 p.m. (Central Time), from Aug. 1 through Aug. 8, by dialing, U.S. (800) 405-2236; international (303) 590-3000 and entering the number: 11117661#.

About Ameren

With assets of approximately $22 billion, Ameren serves approximately 2.4 million electric customers and almost one million natural gas customers in a 64,000 square mile area of Missouri and Illinois. Ameren owns a diverse mix of electric generating plants strategically located in its Midwest market with a generating capacity of more than 16,400 megawatts.

Regulation G Statement

Ameren has presented certain information in this release on a diluted cents per share basis. These diluted per share amounts reflect certain factors that directly impact Ameren's total earnings per share. The core (non-GAAP) earnings per share and core (non-GAAP) earnings per share guidance excludes one or more of the following: costs related to severe January 2007 storms, the earnings impact of the settlement agreement among parties in Illinois for comprehensive electric rate relief and customer assistance, the reversal of accruals made in 2006 for low-income energy assistance and energy efficiency program funding commitments in Illinois, a March 2007 FERC order, which retroactively adjusted prior years' regional transmission organization costs, net mark-to-market gains or losses from nonqualifying hedges, the estimated minimum benefit of an accounting order from the Missouri Public Service Commission associated with 2007 storm costs and the 2008 lump-sum payment from a coal supplier for expected higher fuel costs in 2009 as a result of the premature closure of a mine and termination of a contract. Ameren uses core (non-GAAP) earnings internally for financial planning and for analysis of performance. Ameren also uses core (non-GAAP) earnings as primary performance measurements when communicating with analysts and investors regarding our earnings results and outlook, as the company believes it allows it to more accurately compare the company's ongoing performance across periods.

In providing consolidated and segment core (non-GAAP) earnings guidance, there could be differences between core (non-GAAP) earnings and earnings prepared in accordance with GAAP for certain items, such as those listed above. Ameren is unable to estimate the impact, if any, on future GAAP earnings of certain items, such as the ultimate earnings impact of the Missouri Public Service Commission storm cost-related order, or net mark-to- market gains or losses from nonqualifying hedges.

Forward-looking Statements

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

  --  regulatory or legislative actions, including changes in regulatory
      policies and ratemaking determinations, such as the outcome of pending
      Union Electric Company, Central Illinois Public Service Company,
      Central Illinois Light Company and Illinois Power Company rate
      proceedings or future legislative actions that seek to limit or
      reverse rate increases;
  --  uncertainty as to the effect of implementation of the Illinois
      comprehensive electric rate relief and customer assistance settlement
      agreement on Ameren, the Ameren Illinois utilities, Ameren Energy
      Generating Company and AmerenEnergy Resources Generating Company,
      including implementation of the new power procurement process in
      Illinois beginning 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 Union Electric Company
      and Ameren Energy 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 the Midwest Independent Transmission
      System Operator, Inc.;
  --  the availability of fuel such as coal, natural gas, and enriched
      uranium used to produce electricity; the availability of purchased
      power and natural gas for distribution; and the level and volatility
      of future market prices for such commodities, including the ability to
      recover the costs for such commodities;
  --  the effectiveness of our risk management strategies and the use of
      financial and derivative instruments;
  --  prices for power in the Midwest, including forward prices;
  --  business and economic conditions, including their impact on interest
      rates;
  --  disruptions of the capital markets or other events that make access to
      necessary capital more difficult or costly;
  --  the impact of the adoption of new accounting standards and the
      application of appropriate technical accounting rules and guidance;
  --  actions of credit rating agencies and the effects of such actions;
  --  weather conditions and other natural phenomena;
  --  the impact of system outages caused by severe weather conditions or
      other events;
  --  generation plant construction, installation and performance, including
      costs associated with Union Electric Company's Taum Sauk
      pumped-storage hydroelectric plant incident and the plant's future
      operation;
  --  recoverability through insurance of costs associated with Union
      Electric Company's Taum Sauk pumped-storage hydroelectric plant
      incident;
  --  operation of Union Electric Company's nuclear power facility,
      including planned and unplanned outages, and decommissioning costs;
  --  the effects of strategic initiatives, including acquisitions and
      divestitures;
  --  the impact of current environmental regulations on utilities and power
      generating companies and the expectation that more stringent
      requirements, including those related to greenhouse gases, will be
      introduced over time, which could have a negative financial effect;
  --  labor disputes, future wage and employee benefits costs, including
      changes in 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.

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

                          AMEREN CORPORATION (AEE)
                         CONSOLIDATED BALANCE SHEET
                          (Unaudited, in millions)

                                                 June 30,       December 31,
                                                   2008              2007
        ASSETS
  Current Assets:
    Cash and cash equivalents                       $205              $355
    Accounts receivable - trade, net                 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
  Stockholders' Equity:
    Common stock                                       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 (AEE)
                      CONSOLIDATED STATEMENT OF INCOME
             (Unaudited, in millions, except per share amounts)

                                       Three Months Ended  Six Months Ended
                                            June 30,           June 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


  Average Common Shares Outstanding       209.5    207.1    209.1    206.9



                          AMEREN CORPORATION (AEE)
                    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



                          AMEREN CORPORATION (AEE)
                      CONSOLIDATED OPERATING STATISTICS

                                       Three Months Ended  Six Months Ended
                                            June 30,           June 30,
                                         2008     2007     2008       2007

  Electric Sales - kilowatt-hour (in
   millions):
  Missouri Regulated
     Residential                          2,881    3,189    6,859    6,714
     Commercial                           3,662    3,485    7,185    6,873
     Industrial                           2,210    2,311    4,488    4,627
     Other                                  212      174      396      358
       Native                             8,965    9,159   18,928   18,572
     Non-affiliate interchange sales      2,930    2,219    6,041    4,967
       Subtotal                          11,895   11,378   24,969   23,539

  Illinois Regulated
     Residential
       Generation and delivery service    2,573    2,711    5,655    5,513
     Commercial
       Generation and delivery service    1,517    1,839    2,959    3,813
       Delivery service only              1,336    1,243    2,851    2,315
     Industrial
       Generation and delivery service      404      394      739    1,236
       Delivery service only              2,740    2,831    5,607    5,435
     Other                                  128      143      274      291
       Subtotal                           8,698    9,161   18,085   18,603

  Non-rate-regulated Generation
     Non-affiliate energy sales           5,928    5,592   12,315   11,729
     Affiliate energy sales               1,437    1,769    3,198    3,577
       Subtotal                           7,365    7,361   15,513   15,306

  Eliminate affiliate sales              (1,437)  (1,769)  (3,198)  (3,577)
  Eliminate Illinois Regulated/Non-
   rate-regulated Generation common
   customers                             (1,128)  (1,489)  (2,378)  (3,044)

       Ameren Total                      25,393   24,642   52,991   50,827

  Electric Revenues (in millions):
  Missouri Regulated
     Residential                           $227     $244     $445     $435
     Commercial                             230      215      395      372
     Industrial                              94      100      170      179
     Other                                   38       20       69       44
       Native                               589      579    1,079    1,030
     Non-affiliate interchange sales        147       89      298      211
       Subtotal                             736      668    1,377    1,241

  Illinois Regulated
     Residential
       Generation and delivery service      255      302      513      591
     Commercial
       Generation and delivery service      151      177      285      361
       Delivery service only                 17       11       34       19
     Industrial
       Generation and delivery service       22       24       49       75
       Delivery service only                  7        8       14       10
     Other                                   69       45      157       98
       Subtotal                             521      567    1,052    1,154

  Non-rate-regulated Generation
     Non-affiliate energy sales             295      289      612      607
     Affiliate native energy sales           92      116      210      240
     Other                                   20        9       33       18
       Subtotal                             407      414      855      865

  Eliminate affiliate and common
   customer sales                          (119)    (130)    (272)    (278)
       Ameren Total                      $1,545   $1,519   $3,012   $2,982



                          AMEREN CORPORATION (AEE)
                      CONSOLIDATED OPERATING STATISTICS

                                        Three Months Ended  Six Months Ended
                                             June 30,           June 30,
                                          2008     2007     2008      2007

  Electric Generation - megawatt-hour
   (in millions):
  Missouri Regulated                       12.2     11.5     25.1     23.8
  Non-rate-regulated Generation
     Ameren Energy Generating Company
      (Genco)                               3.5      4.0      7.9      8.1
     AmerenEnergy Resources Generating
      Company (AERG)                        1.6      1.1      3.3      2.6
     Electric Energy, Incorporated(EEI)     1.8      1.9      3.8      3.9
     Medina Valley                          -        -        0.1      0.1
       Subtotal                             6.9      7.0     15.1     14.7
       Ameren Total                        19.1     18.5     40.2     38.5

  Fuel Cost per kilowatt-hour (cents)
     Missouri Regulated                   1.279    1.284    1.254    1.177
     Non-rate-regulated Generation        1.846    1.598    1.875    1.662

  Gas Sales - decatherms (in thousands)
     Missouri Regulated                   1,564    1,395    7,772    7,124
     Illinois Regulated                  13,677   13,562   64,460   58,371
     Other                                  288       72      926    1,591
       Ameren Total                      15,529   15,029   73,158   67,086

  Net Income (Loss) by Segment (in
   millions):
     Missouri Regulated                    $122      $67     $174      $85
     Illinois Regulated                     (14)      20        2       53
     Non-rate-regulated Generation           98       56      176      126
     Other                                  -        -         (8)       2
       Ameren Total                        $206     $143     $344     $266


                                        June 30,               December 31,
                                           2008                       2007
  Common Stock:
     Shares outstanding (in millions)     210.1                      208.3
     Book value per share                $32.45                     $32.41

  Capitalization Ratios:
     Common equity                        46.4%                      48.3%
     Preferred stock                       1.3%                       1.4%
     Debt, net of cash                    52.3%                      50.3%

SOURCE: Ameren Corporation

CONTACT: Media, Susan Gallagher, +1-314-554-2175, sgallagher@ameren.com,
or Analysts, Bruce Steinke, +1-314-554-2574, bsteinke@ameren.com, or Theresa
Nistendirk, +1-314-206-0693, tnistendirk@ameren.com, or Investors, Investor
Services, 1-800-255-2237, invest@ameren.com, all of Ameren Corporation

Web site: http://www.ameren.com/