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Ameren Announces Third Quarter 2007 Earnings
PRNewswire-FirstCall
ST. LOUIS
(NYSE:AEE)

ST. LOUIS, Nov. 9 /PRNewswire-FirstCall/ -- Ameren Corporation (NYSE: AEE) today announced third quarter 2007 GAAP net income of $244 million, or $1.18 per share, compared to third quarter 2006 GAAP net income of $293 million, or $1.42 per share. GAAP net income for the first nine months of 2007 was $510 million, or $2.46 per share, compared to $486 million, or $2.37 per share, in the first nine months of 2006.

Excluding unusual items in 2007 and 2006, third quarter 2007 non-GAAP net income was $282 million, or $1.36 per share, compared to third quarter 2006 non-GAAP net income of $312 million, or $1.52 per share. Non-GAAP net income for the first nine months of 2007 was $567 million, or $2.73 per share, compared to $511 million, or $2.50 per share in the first nine months of 2006.

Ameren's earnings in the third quarter and first nine months of 2007 were reduced by $38 million (after taxes), or 18 cents per share, as a result of costs associated with an Illinois rate relief and customer assistance settlement agreement. The impact of these costs on the first nine months of 2007 was reduced because of the reversal of a $10 million charge (after taxes), or 5 cents per share, originally recorded in 2006 related to funding commitments for low-income energy assistance and energy efficiency programs. These commitments were terminated in early 2007 and ultimately replaced by the Illinois settlement. Earnings in the first nine months of 2007 were also reduced by $19 million (after taxes), or 9 cents per share, because of restoration costs following severe January ice storms. Earnings in 2006 reflected costs of severe storms of approximately $19 million (after taxes), or 10 cents per share, for the third quarter and approximately $25 million (after taxes), or 13 cents per share, for the first nine months of 2006. Earnings for the first nine months of 2007 were also reduced $10 million (after taxes), or 5 cents per share, as a result of a Federal Energy Regulatory Commission (FERC) order retroactively adjusting prior years' regional transmission organization costs. Excluding unusual items in 2006 and 2007, non-GAAP earnings per share were as follows:

                              Third Quarter              Nine Months
                            2007         2006         2007         2006
  GAAP Earnings per Share  $1.18        $1.42        $2.46        $2.37
    Illinois settlement,
     net                    0.18            -         0.13            -
    Severe storms              -         0.10         0.09         0.13
    FERC order                 -            -         0.05            -
  Non-GAAP Earnings per
   Share                   $1.36        $1.52        $2.73        $2.50

"Our 2007 third quarter earnings were lower than the 2006 period primarily because of the Illinois rate relief settlement, changes in our Illinois electric summer rate structure and the rising costs of operating our regulated utility businesses, including increased reliability expenditures," said Gary L. Rainwater, chairman, president and chief executive officer of Ameren Corporation. "These factors more than offset warmer summer weather and higher electric margins from our non-rate-regulated generation business segment. Through the first nine months of operations this year, our Illinois regulated business experienced a significant earnings decline compared to 2006 due to, among other things, our current levels of electric and gas delivery service rates being insufficient to recover our current costs of providing service to our customers and provide a reasonable return on our investments. Our Nov. 2 requests for $247 million in increased electric and gas rates in Illinois are clearly needed in order for us to provide safe and reliable service to our customers, as well as earn a reasonable return on our investments."

"We understand that increases in energy costs can be difficult for our customers. In recognition of this, earlier this year, we pledged to keep the overall annual residential electric bill increases in Illinois to less than 10 percent in the first year for each utility in its next rate filing. Our Illinois rate filing fulfills that promise," Rainwater added.

While earnings were significantly lower in the Illinois regulated business segment, earnings improved in the Missouri regulated and non-rate-regulated electric generation business segments. Overall, Ameren's earnings in the third quarter of 2007 were negatively impacted by increases in fuel and related transportation costs, distribution system reliability expenditures, plant maintenance, labor and benefits, depreciation and amortization, and financing costs. In addition, a change in the summer rate structure for the delivery of electricity in Illinois also reduced earnings compared to the prior-year period. Higher-priced power sales contracts in Ameren's non-rate-regulated generation business segment, as well as the June 2007 implementation of the Missouri electric rate order, reduced the negative impact of these items on Ameren's earnings. In addition, electric margins in Ameren's Missouri and Illinois rate-regulated business segments benefited from greater cooling demand caused by warmer summer weather. Cooling degree days increased 16 percent in the third quarter of 2007, compared to the same period in 2006, and were 30 percent above normal.

On November 5, 2007, Ameren reaffirmed its 2007 earnings guidance. The company expects GAAP earnings to range between $2.80 and $3.05 per share and non-GAAP 2007 earnings to range between $3.15 and $3.40 per share. The 2007 non-GAAP earnings per share guidance excludes the 9 cents per share negative impact of the severe January 2007 ice storms; the estimated 26 cents per share negative impact in 2007 of the settlement agreement among parties in Illinois to provide comprehensive electric rate relief and customer assistance; the 5 cents per share positive impact resulting from the reversal of accruals made in 2006 for low-income energy assistance and energy efficiency program funding commitments in Illinois; and the 5 cents per share negative impact of a Federal Energy Regulatory Commission (FERC) order retroactively adjusting prior years' regional transmission organization costs. Non-GAAP contribution to 2007 net income for Ameren's Missouri regulated business segment is expected to be an estimated $310 million; the Illinois regulated business segment is expected to contribute an estimated $90 million; and the non-rate- regulated business segment is expected to contribute an estimated $280 million. Ameren's earnings guidance for 2007 assumes normal weather for the balance of 2007 and is subject to, among other things, regulatory and legislative decisions, plant operations, energy market and economic conditions, severe storms, unusual or otherwise unexpected gains or losses and other risks and uncertainties outlined in Ameren's Forward-looking Statements.

Missouri Regulated Operations

Ameren's Missouri regulated business segment, which includes AmerenUE's electric and gas utility operations, contributed $179 million to GAAP net income in the third quarter of 2007 -- $37 million more than the year-ago period. This segment contributed $264 million to GAAP net income in the first nine months of 2007 -- $9 million above the year-ago period.

Third quarter 2007 earnings for the Missouri regulated business segment increased, compared to the same period in 2006, primarily due to the impact of the Missouri electric rate order, warmer summer weather, and the lack of severe storms which occurred in the prior-year period. These gains were reduced by higher fuel and purchased power, labor and employee benefits, financing and reliability improvement costs. Severe storms in the third quarter of 2006 reduced earnings in the Missouri regulated business segment for that period by $13 million, after taxes.

On a non-GAAP basis, Ameren's Missouri regulated business segment contributed $179 million to net income in the third quarter of 2007 - $24 million more than the year-ago period. This segment contributed $288 million to non-GAAP net income in the first nine months of 2007 - $14 million above the year-ago period.

Illinois Regulated Operations

The Illinois regulated business segment, which includes the electric and gas distribution utility businesses of AmerenCIPS, AmerenCILCO and AmerenIP, incurred a GAAP net loss of $9 million in the third quarter of 2007 - a $92 million decrease in earnings compared to the third quarter of 2006. This segment contributed $45 million to GAAP net income in the first nine months of 2007, down from $125 million in the year-ago period.

The Illinois regulated business segment incurred a loss for the third quarter of 2007 compared to the same period in 2006 primarily because of the new summer rate structure for the delivery of electricity in Illinois. In addition, costs associated with the Illinois rate relief and customer assistance settlement agreement reduced earnings from the Illinois regulated segment by $16 million, after taxes. Higher financing costs, resulting from reduced credit ratings and increased borrowings, and increased depreciation and amortization also reduced third quarter 2007 earnings compared to the year-ago period. Severe storms in the third quarter of 2006 reduced earnings in the Illinois regulated business segment by $7 million, after taxes.

On a non-GAAP basis, Ameren's Illinois regulated business segment contributed $7 million to net income in the third quarter of 2007 -- $83 million less than the year-ago period. This segment contributed $66 million to non-GAAP net income in the first nine months of 2007 -- $66 million less than the year-ago period.

Non-Rate-Regulated Generation Operations

Ameren's non-rate-regulated electric generation business segment contributed $73 million to GAAP net income in the third quarter of 2007 -- $11 million more than the year-ago period. This segment contributed $197 million to GAAP net income in the first nine months of 2007 -- $95 million more than the year-ago period.

Third quarter 2007 earnings for Ameren's non-rate-regulated generation business segment increased, compared to the year-ago period, because of the replacement of below-market power sales contracts, which expired in 2006, with higher-priced, market-based contracts in 2007. However, costs associated with the Illinois rate relief and customer assistance settlement agreement reduced earnings from the non-rate-regulated business segment by $22 million, after taxes. Higher plant maintenance expenses also reduced 2007 earnings. In addition, the third quarter of 2006 included earnings from the sale of emission allowances while no allowance sales were made in the current-year period.

On a non-GAAP basis, Ameren's non-rate-regulated electric generation business segment contributed $95 million to non-GAAP net income in the third quarter of 2007 -- $34 million more than the year-ago period. This segment contributed $209 million to non-GAAP net income in the first nine months of 2007 -- $108 million above the year-ago period.

Ameren will conduct a conference call for financial analysts at 9:00 a.m. (Central Time) on Friday, Nov. 9, to discuss third quarter 2007 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 "Q3 2007 Ameren Corporation Earnings Conference Call," then the appropriate audio link. A slide presentation will also be available on Ameren's Web site that reconciles earnings per share for the third quarter and first nine months of 2007 to the same periods in 2006, and reconciles 2007 earnings per share guidance to 2006 earnings per share on a comparable share basis. This presentation will be posted in the "Investors" section of the website 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 11:00 a.m. (Central Time), from Nov. 9 through Nov. 16, by dialing, U.S. (800) 405-2236, international (303) 590-3000 and entering the number: 11100448#.

With assets of over $20 billion, Ameren serves approximately 2.4 million electric customers and nearly 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 2007 non-GAAP earnings per share and 2007 non-GAAP earnings per share guidance excludes the impact of January 2007 severe storms, a March 2007 FERC order that increased regional transmission organization costs, the reversal of accruals made in 2006 for low-income energy assistance and energy efficiency program funding commitments in Illinois and the earnings impact of the 2007 settlement agreement among parties in Illinois for comprehensive electric rate relief and customer assistance. Ameren believes this information enables readers to better understand the impact of these factors on Ameren's results of operations and earnings per share.

Forward-looking Statements

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

  *  regulatory or legislative actions, including changes in regulatory
     policies and ratemaking determinations, such as the outcome of pending
     AmerenCIPS, AmerenCILCO and AmerenIP rate proceedings or future
     legislative actions that seek to limit rate increases;
  *  uncertainty as to the implementation of the Illinois electric
     settlement agreement on Ameren and its Illinois utilities and
     generating companies, including in respect of the new power procurement
     process in Illinois for 2008 and 2009;
  *  changes in laws and other governmental actions, including monetary and
     fiscal policies;
  *  the effects of increased competition in the future due to, among other
     things, deregulation of certain aspects of our business at both the
     state and federal levels, and the implementation of deregulation, such
     as occurred when the electric rate freeze and power supply contracts
     expired in Illinois at the end of 2006;
  *  the effects of participation in the Midwest Independent Transmission
     System Operator;
  *  the availability of fuel such as coal, natural gas, and enriched
     uranium used to produce electricity; the availability of purchased
     power and natural gas for distribution; and the level and volatility of
     future market prices for such commodities, including the ability to
     recover the costs for such commodities;
  *  the effectiveness of our risk management strategies and the use of
     financial and derivative instruments;
  *  prices for power in the Midwest;
  *  business and economic conditions, including their impact on interest
     rates;
  *  disruptions of the capital markets or other events that make access to
     necessary capital more difficult or costly;
  *  the impact of the adoption of new accounting standards and the
     application of appropriate technical accounting rules and guidance;
  *  actions of credit rating agencies and the effects of such actions;
  *  weather conditions and other natural phenomena;
  *  the impact of system outages caused by severe weather conditions or
     other events;
  *  generation plant construction, installation and performance, including
     costs associated with AmerenUE's Taum Sauk pumped-storage hydroelectric
     plant incident and the plant's future operation;
  *  recoverability through insurance of costs associated with AmerenUE's
     Taum Sauk pumped-storage hydroelectric plant incident;
  *  operation of AmerenUE's nuclear power facility, including planned and
     unplanned outages, and decommissioning costs;
  *  the effects of strategic initiatives, including acquisitions and
     divestitures;
  *  the impact of current environmental regulations on utilities and power
     generating companies and the expectation that more stringent
     requirements, including those related to greenhouse gases, will be
     introduced over time, which could have a negative financial effect;
  *  labor disputes, future wage and employee benefits costs, including
     changes in returns on benefit plan assets;
  *  the inability of our counterparties and affiliates to meet their
     obligations with respect to contracts and financial instruments;
  *  the cost and availability of transmission capacity for the energy
     generated or required to satisfy energy sales;
  *  legal and administrative proceedings; and
  *  acts of sabotage, war, terrorism or intentionally disruptive acts.

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

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

                                             September 30,      December 31,
                                                   2007              2006

                      ASSETS
  Current Assets:
    Cash and cash equivalents                       $170              $137
    Accounts receivable - trade                      691               418
    Unbilled revenue                                 263               309
    Miscellaneous accounts and notes receivable      258               160
    Materials and supplies                           757               647
    Other current assets                             202               203
      Total current assets                         2,341             1,874
  Property and Plant, Net                         14,729            14,286
  Investments and Other Assets:
    Nuclear decommissioning trust fund               301               285
    Goodwill                                         831               831
    Intangible assets                                197               217
    Other assets                                     683               654
    Regulatory assets                              1,323             1,431
      Total investments and other assets           3,335             3,418

  TOTAL ASSETS                                   $20,405           $19,578

    LIABILITIES AND STOCKHOLDERS' EQUITY
  Current Liabilities:
    Current maturities of long-term debt            $203              $456
    Short-term debt                                1,202               612
    Accounts and wages payable                       415               671
    Taxes accrued                                    136                58
    Other current liabilities                        548               406
      Total current liabilities                    2,504             2,203
  Long-term Debt, Net                              5,486             5,285
  Preferred Stock of Subsidiary Subject
   to Mandatory Redemption                            16                17
  Deferred Credits and Other Liabilities:
    Accumulated deferred income taxes, net         2,055             2,144
    Accumulated deferred investment tax credits      111               118
    Regulatory liabilities                         1,241             1,234
    Asset retirement obligations                     571               549
    Accrued pension and other postretirement
     benefits                                      1,058             1,065
    Other deferred credits and liabilities           392               169
      Total deferred credits and other
       liabilities                                 5,428             5,279
  Preferred Stock of Subsidiaries Not
   Subject to Mandatory Redemption                   195               195
  Minority Interest in Consolidated
   Subsidiaries                                       20                16
  Stockholders' Equity:
    Common stock                                       2                 2
    Other paid-in capital, principally
     premium on common stock                       4,579             4,495
    Retained earnings                              2,134             2,024
    Accumulated other comprehensive
     income                                           41                62
      Total stockholders' equity                   6,756             6,583

  TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY     $20,405           $19,578



                          AMEREN CORPORATION (AEE)
                      CONSOLIDATED STATEMENT OF INCOME
             (Unaudited, in millions, except per share amounts)

                                       Three Months Ended  Nine Months Ended
                                          September 30,      September 30,
                                         2007      2006     2007      2006

  Operating Revenues:
    Electric                             $1,872   $1,767   $4,844   $4,356
    Gas                                     125      143      895      904
      Total operating revenues            1,997    1,910    5,739    5,260

  Operating Expenses:
    Fuel                                    338      277      864      776
    Purchased power                         419      346    1,106      896
    Gas purchased for resale                 68       84      622      641
    Other operations and maintenance        427      395    1,249    1,141
    Depreciation and amortization           169      162      514      485
    Taxes other than income taxes            97       99      295      302
      Total operating expenses            1,518    1,363    4,650    4,241
  Operating Income                          479      547    1,089    1,019

  Other Income and Expenses:
    Miscellaneous income                     20       12       54       29
    Miscellaneous expense                    (6)      (3)     (10)      (4)
      Total other income                     14        9       44       25

  Interest Charges                          110       89      316      254

  Income Before Income Taxes, Minority
   Interest and Preferred Dividends of
   Subsidiaries                             383      467      817      790

  Income Taxes                              130      161      279      273

  Income Before Minority Interest and
   Preferred Dividends of Subsidiaries      253      306      538      517

  Minority Interest and Preferred
   Dividends of Subsidiaries                  9       13       28       31

  Net Income                               $244     $293     $510     $486

  Earnings per Common Share - Basic and
   Diluted                                $1.18    $1.42    $2.46    $2.37

  Average Common Shares Outstanding       207.6    205.9    207.1    205.4



                          AMEREN CORPORATION (AEE)
                    CONSOLIDATED STATEMENT OF CASH FLOWS
                          (Unaudited, in millions)

                                                       Nine Months Ended
                                                         September 30,
                                                    2007              2006
  Cash Flows From Operating Activities:
    Net income                                      $510              $486
    Adjustments to reconcile net income
     to net cash provided by operating
     activities:
       Gain on sales of emission allowances           (7)              (25)
       Depreciation and amortization                 537               507
       Amortization of nuclear fuel                   26                26
       Amortization of debt issuance costs
        and premium/discounts                         14                12
       Deferred income taxes and investment
        tax credits, net                              18                 7
       Loss on sale of noncore properties              -                 4
       Minority interest                              20                23
       Other                                          10                17
       Changes in assets and liabilities:
         Receivables, net                           (320)              157
         Materials and supplies                     (110)             (136)
         Accounts and wages payable                 (113)             (260)
         Taxes accrued                                75               148
         Assets, other                               (20)              (87)
         Liabilities, other                          193               101
         Pension and other postretirement
          benefit obligations, net                    87                89
  Net cash provided by operating activities          920             1,069

  Cash Flows From Investing Activities:
    Capital expenditures                          (1,035)             (693)
    Combustion turbine acquisitions                    -              (292)
    Nuclear fuel expenditures                        (39)              (37)
    Proceeds from sale of noncore properties           -                11
    Purchases of securities - nuclear
     decommissioning trust fund                     (110)              (78)
    Sales of securities - nuclear
     decommissioning trust fund                       98                68
    Purchases of emission allowances                 (12)              (38)
    Sales of emission allowances                       5                12
    Other                                              -                 3
  Net cash used in investing activities           (1,093)           (1,044)

  Cash Flows From Financing Activities:
    Dividends on common stock                       (395)             (391)
    Capital issuance costs                            (3)               (4)
    Short-term debt, net                             590               158
    Dividends paid to minority interest              (16)              (21)
    Redemptions, repurchases and maturities:
       Long-term debt                               (465)             (138)
       Preferred stock                                (1)               (1)
    Issuances:
       Common stock                                   71                78
       Long-term debt                                425               232
  Net cash provided by (used in)
   financing activities                              206               (87)

  Net Change In Cash and Cash Equivalents             33               (62)
  Cash and Cash Equivalents at Beginning of Year     137                96

  Cash and Cash Equivalents at End of Period        $170               $34



                           AMEREN CORPORATION (AEE)
                      CONSOLIDATED OPERATING STATISTICS

                                      Three Months Ended  Nine Months Ended
                                         September 30,      September 30,
                                         2007     2006     2007       2006

  Electric Sales - kilowatt-hour (in
   millions):
  Missouri Regulated
     Residential                          4,409    3,965   11,123    10,085
     Commercial                           4,407    4,024   11,280    10,708
     Industrial                           2,617    2,527    7,244     7,213
     Other                                  219      214      577       561
       Native                            11,652   10,730   30,224    28,567
     Non-affiliate interchange sales      2,219      682    7,186     1,982
     Affiliate interchange sales              -    2,073        -     7,507
       Subtotal                          13,871   13,485   37,410    38,056

  Illinois Regulated
     Residential
       Generation and delivery service    3,624    3,531    9,137     8,907
     Commercial
       Generation and delivery service    1,839    3,193    5,652     8,642
       Delivery service only              1,609       68    3,924       201
     Industrial
       Generation and delivery service      147    2,975    1,383     8,062
       Delivery service only              3,317      390    8,752     2,038
     Other                                  140      154      431       454
       Subtotal                          10,676   10,311   29,279    28,304

  Non-rate-regulated Generation
     Non-affiliate energy sales           6,708    5,872   18,420    18,241
     Affiliate energy sales               2,088    5,088    5,682    13,942
       Subtotal                           8,796   10,960   24,102    32,183

  Eliminate affiliate sales              (2,086)  (6,695)  (5,663)  (21,371)
  Eliminate Illinois Regulated/Non-
   rate-regulated Generation common
   customers                             (1,444)    (368)  (4,488)   (1,737)

     Ameren Total                        29,813   27,693   80,640    75,435

  Electric Revenues (in millions):
  Missouri Regulated
     Residential                           $366     $322     $801     $728
     Commercial                             302      267      674      639
     Industrial                             129      124      308      314
     Other                                   37       33       81       77
       Native                               834      746    1,864    1,758
     Non-affiliate interchange sales         92       56      303      175
     Affiliate interchange sales              -       34        -      156
       Subtotal                             926      836    2,167    2,089

  Illinois Regulated
     Residential
       Generation and delivery service      217      293      808      679
     Commercial
       Generation and delivery service      171      242      532      610
       Delivery service only                 18        -       37        2
     Industrial
       Generation and delivery service       13      148       88      365
       Delivery service only                  7        -       17        2
     Other                                  187       34      285       85
       Subtotal                             613      717    1,767    1,743

  Non-rate-regulated Generation
     Non-affiliate energy sales             333      282      940      781
     Affiliate native energy sales          142      180      382      502
     Affiliate other sales                   19        5       37       13
       Subtotal                             494      467    1,359    1,296

  Eliminate affiliate sales                (161)    (253)    (449)    (772)
     Ameren Total                        $1,872   $1,767   $4,844   $4,356



                           AMEREN CORPORATION (AEE)
                      CONSOLIDATED OPERATING STATISTICS

                                      Three Months Ended   Nine Months Ended
                                        September 30,         September 30,
                                        2007       2006     2007       2006

  Electric Generation - KWH (in
   millions):
  Missouri Regulated                      13.6     13.4      37.4      38.0
  Non-rate-regulated Generation
     Genco                                 4.8      4.3      13.0      11.0
     AERG                                  1.3      1.7       3.9       5.0
     EEI                                   2.0      2.3       5.9       6.2
       Subtotal                            8.1      8.3      22.8      22.2
       Ameren Total                       21.7     21.7      60.2      60.2

  Fuel Cost per KWH (cents)
     Missouri Regulated                  1.372    1.132     1.245     1.046
     Non-rate-regulated Generation       1.810    1.606     1.711     1.576

  Gas Sales - Dth (in thousands)
     Missouri Regulated                    862      932     7,986     6,989
     Illinois Regulated                  6,282    8,970    64,653    60,890

  Net Income(Loss) by Segment (in
   millions):
     Missouri Regulated                   $179     $142      $264      $255
     Illinois Regulated                     (9)      83        45       125
     Non-rate-regulated Generation          73       62       197       102
     Other                                   1        6         4         4
       Ameren Total                       $244     $293      $510      $486


                                             September 30,      December 31,
                                                     2007              2006
  Common Stock:
     Shares outstanding (in millions)               208.0             206.6
     Book value per share                          $32.41            $31.87

  Capitalization Ratios:
     Common equity                                  49.3%             50.6%
     Preferred stock                                 1.4%              1.5%
     Debt, net of cash                              49.3%             47.9%

SOURCE: Ameren Corporation

CONTACT: Analysts, Bruce Steinke, +1-314-554-2574, bsteinke@ameren.com,
or Missouri/National Media, Tim Fox, +1-314-554-3120, tfox@ameren.com, or
Illinois Media, Erica Abbett, +1-618-236-4329, eabbett@ameren.com, or
Investors, Investor Services, 1-800-255-2237, invest@ameren.com, all of Ameren
Corporation

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