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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">UNITED
STATES</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">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-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">WASHINGTON,
D.C.&#160;&#160;20549</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="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">FORM
8-K</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="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">CURRENT
REPORT</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
to Section&#160;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-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Securities
Exchange Act of 1934</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: 36pt; 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;July&#160;28,
2008</font></div>
    <div align="center">
      <table cellpadding="0" cellspacing="0" width="88%">
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            <td valign="bottom" width="28%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
                <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#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; TEXT-DECORATION: underline">Commission
      File Number</font></div>
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </div>
            </td>
            <td valign="bottom" width="34%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
                <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#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">Exact
      Name of Registrant</font></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">as
      Specified in Charter;</font></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">State
      of Incorporation;</font></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; TEXT-DECORATION: underline">Address
      and Telephone Number</font></div>
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </div>
            </td>
            <td valign="bottom" width="19%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
                <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#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">IRS
      Employer</font></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; TEXT-DECORATION: underline">Identification
      Number</font></div>
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="28%">
            </td>
            <td valign="top" width="34%">
            </td>
            <td valign="top" width="19%">
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%">
              <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">1-2967</font></div>
            </td>
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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">Union
      Electric Company</font></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">(Missouri
      Corporation)</font></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">1901
      Chouteau Avenue</font></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">St.
      Louis, Missouri&#160;&#160;63103</font></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">(314)
      621-3222</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="top" width="19%">
              <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">43-0559760</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%">
              <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">1-3672</font></div>
            </td>
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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">Central
      Illinois Public Service Company</font></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">(Illinois
      Corporation)</font></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">607
      East Adams Street</font></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">Springfield,
      Illinois&#160;&#160;62739</font></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">(888)
      789-2477</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
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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">37-0211380</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%">
              <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">1-2732</font></div>
            </td>
            <td align="left" valign="top" width="34%">
              <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">Central
      Illinois Light Company</font></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">(Illinois
      Corporation)</font></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">300
      Liberty Street</font></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">Peoria,
      Illinois&#160;&#160;61602</font></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">(309)
      677-5271</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="top" width="19%">
              <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">37-0211050</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%">
              <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">1-3004</font></div>
            </td>
            <td align="left" valign="top" width="34%">
              <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">Illinois
      Power Company</font></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">(Illinois
      Corporation)</font></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">370
      South Main Street</font></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">Decatur,
      Illinois&#160;&#160;62523</font></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">(217)
      424-6600</font></div>
            </td>
            <td align="left" valign="top" width="19%">
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            </td>
          </tr>
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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: 18pt; 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&#160;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>
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          <tr valign="top">
            <td style="WIDTH: 36pt">
              <div style="TEXT-INDENT: 18pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;[&#160;&#160;&#160;]</font></div>
            </td>
            <td>
              <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)</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: 36pt">
              <div style="TEXT-INDENT: 18pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;[&#160;&#160;
      ]&#160;</font></div>
            </td>
            <td>
              <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)</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: 36pt">
              <div style="TEXT-INDENT: 18pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;[&#160;&#160;
      ]</font></div>
            </td>
            <td>
              <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act </font>

                <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(17
      CFR 240.14d-2(b))</font></div>
              </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: 36pt">
              <div style="TEXT-INDENT: 18pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;[&#160;&#160;
      ]&#160;</font></div>
            </td>
            <td>
              <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act </font>

                <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(17
      CFR 240.13e-4(c))</font></div>
              </div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div align="center">
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </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%">
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            <td style="WIDTH: 36pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;<font style="DISPLAY: inline; FONT-WEIGHT: bold">ITEM&#160;5.03</font></font></div>
            </td>
            <td>
              <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;<font style="DISPLAY: inline; FONT-WEIGHT: bold">Amendments to Articles of
      Incorporation or Bylaws; Change in Fiscal
  Year.</font></font></div>
            </td>
          </tr>
      </table>
    </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: 45pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
July&#160;28, 2008, the By-Laws of Union Electric Company, doing business as
AmerenUE (&#8220;UE&#8221;), a subsidiary of Ameren Corporation (&#8220;Ameren&#8221;), were amended by
action by unanimous written consent of UE&#8217;s board of directors as
follows:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" id="list" width="100%">
          <tr valign="top">
            <td align="right" style="WIDTH: 54pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Section&#160;5
      of Article&#160;I was revised to give UE&#8217;s board of directors the
      authority to select a person to preside over meetings of stockholders and
      to provide that if neither the Secretary nor an Assistant Secretary is
      present the board of directors may designate a secretary pro tem to act as
      secretary of the meeting.&#160;&#160;The By-Laws previously designated
      certain persons in a specified order to preside at meetings of
      stockholders and provided that the presiding officer would designate a
      secretary pro tem, if necessary, to act as secretary of the
      meeting.</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 cellpadding="0" cellspacing="0" id="list" width="100%">
          <tr valign="top">
            <td align="right" style="WIDTH: 54pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
            </td>
            <td>
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Article&#160;V
      was amended to give UE authority to use uncertificated shares, as
      permitted by Missouri law.</font></div>
            </td>
          </tr>
      </table>
    </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"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
complete copy of the UE By-Laws as amended is included as
Exhibit&#160;3.1(ii).</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: 45pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
July&#160;28, 2008, the Bylaws of Central Illinois Public Service Company, doing
business as AmerenCIPS (&#8220;CIPS&#8221;), a subsidiary of Ameren, were amended by action
by unanimous written consent of CIPS&#8217; board of directors as
follows:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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      select the persons to act as Chairman and Secretary, respectively, of
      shareholders&#8217; meetings.&#160;&#160;The Bylaws previously designated
      certain persons to act as Chairman and Secretary at shareholders&#8217;
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complete copy of the CIPS Bylaws as amended is included as
Exhibit&#160;3.2(ii).</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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July&#160;28, 2008, the Bylaws of Central Illinois Light Company, doing business
as AmerenCILCO (&#8220;CILCO&#8221;), a subsidiary of CILCORP Inc., which is a subsidiary of
Ameren, were amended by action by unanimous written consent of CILCO&#8217;s board of
directors as follows:</font></div>
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      determine who shall preside at all meetings of the shareholders and the
      board of directors.&#160;&#160;The Bylaws previously designated the
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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complete copy of the CILCO Bylaws as amended is included as
Exhibit&#160;3.3(ii).</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: 45pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
July&#160;28, 2008, the Bylaws of Illinois Power Company, doing business as
AmerenIP (&#8220;IP&#8221;), a subsidiary of Ameren, were amended by action by unanimous
written consent of IP&#8217;s board of directors as follows:</font></div>
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      of Article&#160;I was amended to provide that the board of directors may
      select the person to act as Chairman at meetings of the shareholders and
      in the event the Secretary or an Assistant is not present, the board of
      directors may select a secretary to act as secretary of the
      meeting.&#160;&#160;The Bylaws previously designated certain persons in a
      specified order to preside at meetings of shareholders and provided that
      if neither the Secretary nor an Assistant Secretary was present, a
      secretary chosen at the meeting would act as secretary of the
      meeting.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
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      was amended to give IP authority to use uncertificated shares, as
      permitted by Illinois law.</font></div>
            </td>
          </tr>
      </table>
    </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"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
complete copy of the IP Bylaws as amended is included as
Exhibit&#160;3.4(ii).</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"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">ITEM&#160;9.01
Financial Statements and Exhibits.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(d)&#160;Exhibits</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">
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            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="19%">
              <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">3.1(ii)</font></div>
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            <td align="left" valign="top" width="19%">
              <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">3.2(ii)</font></div>
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          <tr>
            <td align="left" valign="top" width="19%">
              <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">3.3(ii)</font></div>
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            <td align="left" valign="top" width="19%">
              <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">3.4(ii)</font></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">Bylaws
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 45pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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combined Form 8-K is being filed separately by Union Electric Company, Central
Illinois Public Service Company, Central Illinois Light Company and Illinois
Power Company (each a &#8220;registrant&#8221;).&#160;&#160;Information contained herein
relating to any individual registrant has been filed by such registrant on its
own behalf.&#160;&#160;No registrant makes any representation as to information
relating to any other 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: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
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      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 45pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">Signatures</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: 45pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
to the requirements of the Securities Exchange Act of 1934, each registrant has
duly caused this report to be signed on its behalf by the undersigned thereunto
duly authorized.&#160;&#160;The signature for each undersigned company shall be
deemed to relate only to matters having reference to such company or its
subsidiaries.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 342pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">UNION
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          </tr>
      </table>
    </div>
    <div align="center">
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          <tr valign="top">
            <td style="WIDTH: 342pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
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            <td>
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          <tr valign="top">
            <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr valign="top">
            <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman"><font style="TEXT-DECORATION: underline">/s/ Martin J.
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          </tr>
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          </tr>
      </table>
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    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 342pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
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            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Senior
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Officer</font></div>
            </td>
          </tr>
      </table>
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    <div style="DISPLAY: block; TEXT-INDENT: 0pt">
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          <tr valign="top">
            <td style="WIDTH: 342pt">
            </td>
            <td>
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              <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">COMPANY</font></div>
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          </tr>
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      <div align="center">
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            <tr valign="top">
              <td style="WIDTH: 342pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
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              <td>
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            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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            </tr>
            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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            </tr>
        </table>
      </div>
      <div>
        <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
            <tr valign="top">
              <td style="WIDTH: 342pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
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              </td>
              <td>
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Officer</font></div>
              </td>
            </tr>
        </table>
      </div>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 342pt">
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">CENTRAL
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          </tr>
      </table>
      <div align="center">
        <table border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
            <tr valign="top">
              <td style="WIDTH: 342pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
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              <td>
                <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(Registrant)</font></div>
              </td>
            </tr>
            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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            <tr valign="top">
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      Lyons&#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;
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            </tr>
            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Martin
      J. Lyons</font></td>
            </tr>
        </table>
      </div>
      <div>
        <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
            <tr valign="top">
              <td style="WIDTH: 342pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
              </td>
              <td>
                <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Senior
      Vice President and Chief Accounting
Officer</font></div>
              </td>
            </tr>
        </table>
      </div>
    </div>
    <div>&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 342pt">
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">ILLINOIS
      POWER COMPANY</font></div>
            </td>
          </tr>
      </table>
      <div align="center">
        <table border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
            <tr valign="top">
              <td style="WIDTH: 342pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></div>
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              <td>
                <div style="TEXT-INDENT: 9pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(Registrant)</font></div>
              </td>
            </tr>
            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            </tr>
            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman"><font style="TEXT-DECORATION: underline">/s/ Martin J.
      Lyons&#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;
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            </tr>
            <tr valign="top">
              <td style="WIDTH: 234pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Martin
      J. Lyons</font></td>
            </tr>
        </table>
      </div>
      <div>
        <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
            <tr valign="top">
              <td style="WIDTH: 342pt">
                <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
              </td>
              <td>
                <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Senior
      Vice President and Chief Accounting
Officer</font></div>
              </td>
            </tr>
        </table>
      </div>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
    <div style="TEXT-ALIGN: left" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date:&#160;&#160;July&#160;29,
2008</font></div><br>
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</font></div>
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</font></div>
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</font></div>
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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-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">Exhibit
Index</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td align="left" valign="top" width="20%">
              <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">Exhibit
      Number:</font></div>
            </td>
            <td valign="top" width="80%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Title:</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">3.1(ii)</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">By-Laws
      of Union Electric Company as amended July&#160;28, 2008</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">3.2(ii)</font></div>
            </td>
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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">Bylaws
      of Central Illinois Public Service Company as amended </font></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">July&#160;28,
      2008</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
          </tr>
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            <td align="left" valign="top" width="20%">
              <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">3.3(ii)</font></div>
            </td>
            <td align="left" valign="top" width="80%">
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      of Central Illinois Light Company as amended July&#160;28,
      2008</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
          </tr>
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      of Illinois Power Company as amended July&#160;28,
  2008</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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amerencompanies8k072008.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):  July 28,
2008
Commission
      File Number
Exact
      Name of Registrant
as
      Specified in Charter;
State
      of Incorporation;
Address
      and Telephone Number
IRS
      Employer
Identification
      Number
1-2967
Union
      Electric Company
(Missouri
      Corporation)
1901
      Chouteau Avenue
St.
      Louis, Missouri  63103
(314)
      621-3222
43-0559760
1-3672
Central
      Illinois Public Service Company
(Illinois
      Corporation)
607
      East Adams Street
Springfield,
      Illinois  62739
(888)
      789-2477
37-0211380
1-2732
Central
      Illinois Light Company
(Illinois
      Corporation)
300
      Liberty Street
Peoria,
      Illinois  61602
(309)
      677-5271
37-0211050
1-3004
Illinois
      Power Company
(Illinois
      Corporation)
370
      South Main Street
Decatur,
      Illinois  62523
(217)
      424-6600
37-0344645
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 5.03
Amendments to Articles of
      Incorporation or Bylaws; Change in Fiscal
  Year.
On
July 28, 2008, the By-Laws of Union Electric Company, doing business as
AmerenUE ("UE"), a subsidiary of Ameren Corporation ("Ameren"), were amended by
action by unanimous written consent of UE's board of directors as
follows:
·
Section 5
      of Article I was revised to give UE's board of directors the
      authority to select a person to preside over meetings of stockholders and
      to provide that if neither the Secretary nor an Assistant Secretary is
      present the board of directors may designate a secretary pro tem to act as
      secretary of the meeting.  The By-Laws previously designated
      certain persons in a specified order to preside at meetings of
      stockholders and provided that the presiding officer would designate a
      secretary pro tem, if necessary, to act as secretary of the
      meeting.
·
Article V
      was amended to give UE authority to use uncertificated shares, as
      permitted by Missouri law.
The
complete copy of the UE By-Laws as amended is included as
Exhibit 3.1(ii).
On
July 28, 2008, the Bylaws of Central Illinois Public Service Company, doing
business as AmerenCIPS ("CIPS"), a subsidiary of Ameren, were amended by action
by unanimous written consent of CIPS' board of directors as
follows:
·
Article I
      was amended to give CIPS authority to use uncertificated shares, as
      permitted by Illinois law.
·
Section 5
      of Article II was amended to provide that the board of directors may
      select the persons to act as Chairman and Secretary, respectively, of
      shareholders' meetings.  The Bylaws previously designated
      certain persons to act as Chairman and Secretary at shareholders'
      meetings, unless the shareholders represented at the meeting decided
      otherwise.
The
complete copy of the CIPS Bylaws as amended is included as
Exhibit 3.2(ii).
On
July 28, 2008, the Bylaws of Central Illinois Light Company, doing business
as AmerenCILCO ("CILCO"), a subsidiary of CILCORP Inc., which is a subsidiary of
Ameren, were amended by action by unanimous written consent of CILCO's board of
directors as follows:
·
Section 2
      of Article IX was amended to provide that the board of directors may
      determine who shall preside at all meetings of the shareholders and the
      board of directors.  The Bylaws previously designated the
      Chairman of the board to preside at meetings of shareholders and the board
      of directors.
·
Article X
      was amended to give CILCO authority to use uncertificated shares, as
      permitted by Illinois law.
The
complete copy of the CILCO Bylaws as amended is included as
Exhibit 3.3(ii).
On
July 28, 2008, the Bylaws of Illinois Power Company, doing business as
AmerenIP ("IP"), a subsidiary of Ameren, were amended by action by unanimous
written consent of IP's board of directors as follows:
·
Section 5
      of Article I was amended to provide that the board of directors may
      select the person to act as Chairman at meetings of the shareholders and
      in the event the Secretary or an Assistant is not present, the board of
      directors may select a secretary to act as secretary of the
      meeting.  The Bylaws previously designated certain persons in a
      specified order to preside at meetings of shareholders and provided that
      if neither the Secretary nor an Assistant Secretary was present, a
      secretary chosen at the meeting would act as secretary of the
      meeting.
·
Article IV
      was amended to give IP authority to use uncertificated shares, as
      permitted by Illinois law.
The
complete copy of the IP Bylaws as amended is included as
Exhibit 3.4(ii).
ITEM 9.01
Financial Statements and Exhibits.
(d) Exhibits
Exhibit
      Number:
Title
:
3.1(ii)
By-Laws
      of UE as amended July 28, 2008
3.2(ii)
Bylaws
      of CIPS as amended July 28, 2008
3.3(ii)
Bylaws
      of CILCO as amended July 28, 2008
3.4(ii)
Bylaws
      of IP as amended July 28, 2008
This
combined Form 8-K is being filed separately by Union Electric Company, Central
Illinois Public Service Company, Central Illinois Light Company and Illinois
Power Company (each a "registrant").  Information contained herein
relating to any individual registrant has been filed by such registrant on its
own behalf.  No registrant makes any representation as to information
relating to any other registrant.
Signatures
Pursuant
to the requirements of the Securities Exchange Act of 1934, each registrant has
duly caused this report to be signed on its behalf by the undersigned thereunto
duly authorized.  The signature for each undersigned company shall be
deemed to relate only to matters having reference to such company or its
subsidiaries.
UNION
      ELECTRIC COMPANY
(Registrant)
/s/ Martin J.
      Lyons
Martin
      J. Lyons
Senior
      Vice President and Chief Accounting
Officer
CENTRAL
      ILLINOIS PUBLIC SERVICE
COMPANY
(Registrant)
/s/ Martin J.
      Lyons
Martin
      J. Lyons
Senior
      Vice President and Chief Accounting
Officer
CENTRAL
      ILLINOIS LIGHT COMPANY
(Registrant)
/s/ Martin J.
      Lyons
Martin
      J. Lyons
Senior
      Vice President and Chief Accounting
Officer
ILLINOIS
      POWER COMPANY
(Registrant)
/s/ Martin J.
      Lyons
Martin
      J. Lyons
Senior
      Vice President and Chief Accounting
Officer
Date:  July 29,
2008
Exhibit
Index
Exhibit
      Number:
Title:
3.1(ii)
By-Laws
      of Union Electric Company as amended July 28, 2008
3.2(ii)
Bylaws
      of Central Illinois Public Service Company as amended
July 28,
      2008
3.3(ii)
Bylaws
      of Central Illinois Light Company as amended July 28,
      2008
3.4(ii)
Bylaws
      of Illinois Power Company as amended July 28,
  2008