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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">UNITED
      STATES</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">SECURITIES
      AND EXCHANGE COMMISSION</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Washington,
      D.C.&#160;&#160;20549</font></div>
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            <td valign="top" width="24%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;
              </font>
              <hr style="COLOR: black" align="center" noshade size="2" width="20%">
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">FORM
                8-K</font></div>
            </td>
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            <td valign="top" width="24%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">CURRENT
      REPORT</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Pursuant
      to Section 13 or 15(d) of the</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Securities
      Exchange Act of 1934</font></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 207pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Date
      of
      report (Date of earliest event
      reported):&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;<a name="ReportDate"/></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">August
                2, 2007</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><a name="Jurisdiction"/>&#160;</div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><a name="Address"/><a name="Zip">AMEREN
      CORPORATION</a></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(Exact
      name of registrant as specified in its charter)</font></div>
    <div><br></div>
    <div><br></div>
    <div>
      <div><br></div>
      <div>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">Missouri</font></div>
              </td>
              <td valign="top" width="32%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">1-14756</font></div>
              </td>
              <td valign="top" width="34%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">43-1723446</font></div>
              </td>
            </tr>
            <tr>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">(State
                  or other jurisdiction</font></div>
              </td>
              <td valign="top" width="32%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">(Commission</font></div>
              </td>
              <td valign="top" width="34%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">(I.R.S.
                  Employer</font></div>
              </td>
            </tr>
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              <td valign="top" width="34%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">of
                  incorporation)</font></div>
              </td>
              <td valign="top" width="32%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">File
                  Number)</font></div>
              </td>
              <td valign="top" width="34%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">Identification
                  No.)</font></div>
              </td>
            </tr>

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      </div>
    </div>
    <div>&#160;</div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">1901
      Chouteau Avenue, St. Louis, Missouri 63103</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(Address
      of principal executive offices and Zip Code)</font></div>
    <div>&#160;</div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Registrant&#8217;s
      telephone number, including area code:&#160;&#160;(314) 621-3222</font></div>
    <div>&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Check
      the
      appropriate box below if the Form 8-K filing is intended to simultaneously
      satisfy the filing obligation of the registrant under any of the following
      provisions:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">&#160;&#160;&#160;&#160;&#160;[
      ] Written communications pursuant to Rule 425 under the Securities Act (17
      CFR
      230.425)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">&#160;&#160;&#160;&#160;&#160;[
      ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">&#160;&#160;&#160;&#160;&#160;[
      ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
      Act (17 CFR 240.14d-2(b))</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">&#160;&#160;&#160;&#160;&#160;[
      ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
      Act (17 CFR 240.13e-4(c))</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">ITEM
      2.02&#160;&#160;Results of Operations and Financial Condition.</font></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font id="TAB1" style="MARGIN-LEFT: 36pt;"></font>On
      August 2, 2007, Ameren Corporation
      (the &#8220;Registrant&#8221;) issued a press release announcing its earnings for the
      quarterly period ended June 30, 2007.&#160;&#160;The press release is attached
      as Exhibit 99.1 and is incorporated herein by reference.&#160;&#160;The
      information furnished pursuant to this Item 2.02, including Exhibit 99.1, shall
      not be deemed &#8220;filed&#8221; for purposes of Section 18 of the Securities Exchange Act
      of 1934 (the "Exchange Act") or otherwise subject to the liabilities under
      that
      Section and shall not be deemed to be incorporated by reference into any filing
      of the Registrant under the Securities Act of 1933 (the &#8220;Securities Act&#8221;) or the
      Exchange Act.</font></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font id="TAB1" style="MARGIN-LEFT: 36pt;"></font>The
      information contained in Exhibit
      99.2 shall be deemed filed for purposes of Section 18 of the Exchange Act and
      shall be deemed to be incorporated by reference into any filing of the
      Registrant under the Securities Act or the Exchange Act.</font></div>
    <div><br></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">ITEM
      8.01&#160;&#160;Other Events.</font></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font id="TAB1" style="MARGIN-LEFT: 36pt;"></font>In
      its press release dated August 2,
      2007, the Registrant disclosed the following unaudited consolidated financial
      statements:&#160;&#160;Statement of Income for the three months and six months
      ended June&#160;30, 2007 and June 30, 2006, Statement of Cash Flows for the six
      months ended June 30, 2007 and June 30, 2006 and Balance Sheet at June 30,
      2007
      and December 31, 2006.&#160;&#160;The foregoing consolidated financial
      statements are attached as Exhibit 99.2 and the Registrant hereby incorporates
      such consolidated financial statements into this Item 8.01 of this Current
      Report on Form 8-K.</font></div>
    <div><br></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">ITEM
      9.01&#160;&#160;Financial Statements and Exhibits.</font></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(d)
      Exhibits</font></div>
    <div><br></div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
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              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><u>Exhibit
                Number:</u></font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><u>Title:</u></font></div>
            </td>
          </tr>

      </table>
    </div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

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            <td style="WIDTH: 180pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">99.1</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Press
                release regarding earnings for the quarterly period ended</font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">June
                30, 2007, issued on August 2, 2007 by Ameren </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Corporation.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 180pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">99.2
                *</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Ameren
                Corporation&#8217;s Unaudited Consolidated Statement of </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Income
                for the three months and six months ended June&#160;30, 2007 </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">and
                June 30, 2006, Unaudited Consolidated Statement of Cash </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Flows
                for the six months ended June 30, 2007 and June 30, 2006 </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">and
                Unaudited Consolidated Balance Sheet at June 30, 2007 and </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">December
                31, 2006.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">_________________</div>
    <div><a name="ref.id5122203">&#160;<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif"><sup>*</sup></font>
      Exhibit 99.2 is intended to be deemed filed rather than furnished pursuant
      to
      General Instruction B.2. of Form 8-K.</font></a></div>
    <div>&#160;</div>
    <div>&#160;</div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">SIGNATURE</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Pursuant
      to the requirements of the Securities Exchange Act of 1934, the Registrant
      has
      duly caused this report to be signed on its behalf by the undersigned thereunto
      duly authorized.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 342pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">AMEREN
      CORPORATION</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 342pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(Registrant)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 342pt; MARGIN-RIGHT: 0pt" align="left"><u><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">/s/
      Martin J.
      Lyons&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
</font></u></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 342pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Martin
      J.
      Lyons</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 342pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Vice
      President and Controller</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 342pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(Principal
      Accounting Officer)</font></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Date:&#160;&#160;August
      2, 2007</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><u>Exhibit
      Index</u></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div><br></div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 180pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><u>Exhibit
                Number:</u></font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><u>Title:</u></font></div>
            </td>
          </tr>

      </table>
    </div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 180pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">99.1</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Press
                release regarding earnings for the quarterly period ended </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">June
                30, 2007, issued on August 2, 2007 by Ameren </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Corporation.</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 180pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">99.2</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Ameren
                Corporation&#8217;s Unaudited Consolidated Statement of </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Income
                for the three months and six months ended June&#160;30, 2007 </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">and
                June 30, 2006, Unaudited Consolidated Statement of Cash </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Flows
                for the six months ended June 30, 2007 and June 30, 2006</font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">and
                Unaudited Consolidated Balance Sheet at June 30, 2007 and </font></div>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">December
                31, 2006.</font></div>
            </td>
          </tr>

      </table>
    </div>
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    <div><br></div>
    <div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">4</font></div>
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ameren8k080207.htm
UNITED
      STATES
SECURITIES
      AND EXCHANGE COMMISSION
Washington,
      D.C.  20549
FORM
                8-K
CURRENT
      REPORT
Pursuant
      to Section 13 or 15(d) of the
Securities
      Exchange Act of 1934
Date
      of
      report (Date of earliest event
      reported):
August
                2, 2007
AMEREN
      CORPORATION
(Exact
      name of registrant as specified in its charter)
Missouri
1-14756
43-1723446
(State
                  or other jurisdiction
(Commission
(I.R.S.
                  Employer
of
                  incorporation)
File
                  Number)
Identification
                  No.)
1901
      Chouteau Avenue, St. Louis, Missouri 63103
(Address
      of principal executive offices and Zip Code)
Registrant's
      telephone number, including area code:  (314) 621-3222
Check
      the
      appropriate box below if the Form 8-K filing is intended to simultaneously
      satisfy the filing obligation of the registrant under any of the following
      provisions:
[
      ] Written communications pursuant to Rule 425 under the Securities Act (17
      CFR
      230.425)
[
      ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
[
      ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
      Act (17 CFR 240.14d-2(b))
[
      ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
      Act (17 CFR 240.13e-4(c))
ITEM
      2.02  Results of Operations and Financial Condition.
On
      August 2, 2007, Ameren Corporation
      (the "Registrant") issued a press release announcing its earnings for the
      quarterly period ended June 30, 2007.  The press release is attached
      as Exhibit 99.1 and is incorporated herein by reference.  The
      information furnished pursuant to this Item 2.02, including Exhibit 99.1, shall
      not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act
      of 1934 (the "Exchange Act") or otherwise subject to the liabilities under
      that
      Section and shall not be deemed to be incorporated by reference into any filing
      of the Registrant under the Securities Act of 1933 (the "Securities Act") or the
      Exchange Act.
The
      information contained in Exhibit
      99.2 shall be deemed filed for purposes of Section 18 of the Exchange Act and
      shall be deemed to be incorporated by reference into any filing of the
      Registrant under the Securities Act or the Exchange Act.
ITEM
      8.01  Other Events.
In
      its press release dated August 2,
      2007, the Registrant disclosed the following unaudited consolidated financial
      statements:  Statement of Income for the three months and six months
      ended June 30, 2007 and June 30, 2006, Statement of Cash Flows for the six
      months ended June 30, 2007 and June 30, 2006 and Balance Sheet at June 30,
      2007
      and December 31, 2006.  The foregoing consolidated financial
      statements are attached as Exhibit 99.2 and the Registrant hereby incorporates
      such consolidated financial statements into this Item 8.01 of this Current
      Report on Form 8-K.
ITEM
      9.01  Financial Statements and Exhibits.
(d)
      Exhibits
Exhibit
                Number:
Title:
99.1
Press
                release regarding earnings for the quarterly period ended
June
                30, 2007, issued on August 2, 2007 by Ameren
Corporation.
99.2
                *
Ameren
                Corporation's Unaudited Consolidated Statement of
Income
                for the three months and six months ended June 30, 2007
and
                June 30, 2006, Unaudited Consolidated Statement of Cash
Flows
                for the six months ended June 30, 2007 and June 30, 2006
and
                Unaudited Consolidated Balance Sheet at June 30, 2007 and
December
                31, 2006.
_________________
*
Exhibit 99.2 is intended to be deemed filed rather than furnished pursuant
      to
      General Instruction B.2. of Form 8-K.
2
SIGNATURE
Pursuant
      to the requirements of the Securities Exchange Act of 1934, the Registrant
      has
      duly caused this report to be signed on its behalf by the undersigned thereunto
      duly authorized.
AMEREN
      CORPORATION
(Registrant)
/s/
      Martin J.
      Lyons
Martin
      J.
      Lyons
Vice
      President and Controller
(Principal
      Accounting Officer)
Date:  August
      2, 2007
3
Exhibit
      Index
Exhibit
                Number:
Title:
99.1
Press
                release regarding earnings for the quarterly period ended
June
                30, 2007, issued on August 2, 2007 by Ameren
Corporation.
99.2
Ameren
                Corporation's Unaudited Consolidated Statement of
Income
                for the three months and six months ended June 30, 2007
and
                June 30, 2006, Unaudited Consolidated Statement of Cash
Flows
                for the six months ended June 30, 2007 and June 30, 2006
and
                Unaudited Consolidated Balance Sheet at June 30, 2007 and
December
                31, 2006.
4