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    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#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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              <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 style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 279pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left" 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;<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">June
      25, 2008</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><a name="Registrant"><br></a></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="MARGIN-LEFT: 36pt" align="center">
      <table cellpadding="0" cellspacing="0" width="88%">
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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"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Commission File
      Number</font></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">Exact
      Name of Registrant as </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">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
      <font style="TEXT-DECORATION: none">of Incorporation;</font></font></div>
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      Number</font></font></div>
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            </td>
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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">IRS
      Employer</font></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"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Identification
      Number</font></font></div>
            </td>
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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"><a name="jurisdiction">1-14756</a></font></div>
            </td>
            <td align="left" valign="top" width="26%">
              <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"><a name="cfn">Ameren Corporation</a></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 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; TEXT-INDENT: 0pt">&#160;</div>
            </td>
            <td valign="top" width="25%">
              <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"><a name="ein">43-1723446</a></font></div>
            </td>
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    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 45pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><a name="Address" /><a name="Zip">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:</a></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="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#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: 45pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#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: 45pt; MARGIN-RIGHT: -4.5pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#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: 45pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#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="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#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">ITEM
1.01&#160;&#160;&#160; Entry into a Material Definitive Agreement.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">
      <div style="DISPLAY: block; TEXT-INDENT: 0pt">
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><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 June 25, 2008, Ameren Corporation
(&#8220;Ameren&#8221;), JPMorgan Chase Bank, N.A., as agent and the other lenders identified
therein entered into a Credit Agreement dated as of June 25, 2008 (the &#8220;Term
Loan Agreement&#8221;).&#160;&#160;The Term Loan Agreement provides a $300 million
term loan to Ameren due June 24, 2009, which was fully drawn on June 26,
2008.&#160;&#160;In the event Ameren issues capital stock or other equity
interests (except for director or employee benefit or dividend reinvestment plan
purposes), certain hybrid securities or, in amounts exceeding $25 million,
certain additional indebtedness, Ameren is required under the Term Loan
Agreement to use the net proceeds thereof to prepay amounts borrowed under the
Term Loan Agreement.&#160;&#160;In addition, if Ameren replaces its Amended and
Restated Five-Year Revolving Credit Agreement, dated as of July 14, 2006, among
Ameren, certain of its subsidiaries, JPMorgan Chase Bank, N.A. as agent and the
other lenders identified therein (the &#8220;2006 Ameren Credit Agreement&#8221;) with one
or more credit facilities having a total available commitment in excess of $1.15
billion, Ameren is required under the Term Loan Agreement to prepay amounts
borrowed thereunder in an amount equal to the excess new commitments over $1.15
billion.&#160;&#160;Such mandatory prepayments are without premium or penalty
(except for any funding indemnity due in respect of Eurodollar
loans).&#160;&#160;A copy of the Term Loan Agreement is filed as Exhibit 10.1 to
this Current Report on Form 8-K.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></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">Borrowings
under the Term Loan Agreement will bear interest, at the election of Ameren, at
(1) a Eurodollar rate plus a margin, which margin is subject to a floor of 0.90%
per annum and a cap of 1.50% per annum or (2) a rate equal to the higher of the
prime rate of JPMorgan Chase Bank, N.A or the federal funds effective rate plus
&#189;% per annum.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></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">Ameren
will use the proceeds borrowed under the Term Loan Agreement for general
corporate purposes, including without limitation, to reduce amounts borrowed
under the 2006 Ameren Credit Agreement which would make additional amounts
available for borrowing thereunder.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><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 obligations of Ameren under the
Term Loan Agreement are unsecured.&#160;&#160;No subsidiary of Ameren is a party
to, guarantor of, or borrower under, the Term Loan Agreement.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></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">The Term
Loan Agreement has terms similar to the 2006 Ameren Credit Agreement (a copy of
which was filed as Exhibit 10.1 to the Form 8-K filed July 18, 2006) except that
amounts prepaid under the Term Loan Agreement may not be
reborrowed.&#160;&#160;The Term Loan Agreement contains non-financial covenants
including restrictions on the ability to incur liens, dispose of assets and
merge with other entities.&#160;&#160;In addition, the Term Loan Agreement has
non-financial covenants to limit the ability of Ameren to invest in or transfer
assets to other entities, including affiliates.&#160;&#160;The events of default
in the Term Loan Agreement, including a cross default to the occurrence of an
event of default under the 2006 Ameren Credit Agreement or any other agreement
covering indebtedness of Ameren and its Subsidiaries (as defined in the Term
Loan Agreement) in excess of $25 million in the aggregate, are similar to those
contained in the 2006 Ameren Credit Agreement.&#160;&#160;&#8220;Subsidiary&#8221; is
defined in the Term Loan Agreement to include all entities in which Ameren has
at least a majority control but excludes, for most purposes under the Term Loan
Agreement, project finance subsidiaries, non-material subsidiaries and special
purpose entities formed to conduct permitted securitization
transactions.&#160;&#160;Also excluded from the definition of &#8220;Subsidiary&#8221; and
accordingly not subject to the covenants and representations and warranties
under the Term Loan Agreement are Central Illinois Public Service Company,
AmerenEnergy Resources Generating Company, CILCORP Inc., Central Illinois Light
Company and Illinois Power Company and each of their subsidiaries.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></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">The Term
Loan Agreement requires Ameren to maintain consolidated indebtedness of not more
than 65% of consolidated total capitalization.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></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">JPMorgan
Chase Bank, N.A. and certain of the other lenders are also lenders under other
credit agreements of Ameren and its subsidiaries and certain of them provide
other commercial or investment banking services to Ameren and its subsidiaries
from time to time.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">-2-</font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#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">ITEM&#160;2.03&#160;&#160;&#160;
&#160;Creation of a Direct Financial Obligation or an Obligation under an
Off-Balance Sheet Arrangement of a Registrant.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><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>See Item&#160;1.01 above for a
description of the Term Loan Agreement, a copy of which is attached hereto as
Exhibit&#160;10.1 and is incorporated herein by reference.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><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;&#160; Financial Statements and Exhibits.</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><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>
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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"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Exhibit
      Number</font>:</font></font></div>
                  <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
                </td>
                <td align="left" valign="top" width="20%" style="PADDING-BOTTOM: 2px">
                  <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 style="DISPLAY: inline; TEXT-DECORATION: underline">Registrant(s):</font></font></div>
                </td>
                <td align="left" valign="top" width="46%">
                  <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 style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Title</font>:</font></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">10.1</font></div>
                </td>
                <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">Ameren</font></div>
                  <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
                </td>
                <td align="left" valign="top" width="46%">
                  <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">Credit
      Agreement dated as June 25, 2008 (&#8220;Term Loan </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">Agreement&#8221;)</font></div>
                  <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
                </td>
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        <div style="DISPLAY: block; TEXT-INDENT: 333pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">SIGNATURE</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></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"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font>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; TEXT-INDENT: 0pt"><br></div>
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CORPORATION</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 333pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Registrant)</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 333pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">&#160;/s/ Jerre E.
Birdsong&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
</font>&#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;</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 333pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Jerre E.
Birdsong</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 333pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Vice
President and Treasurer</font></div>
        <div style="DISPLAY: block; TEXT-INDENT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date:&#160;&#160;June
27, 2008</font></div>
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Index</font></div>
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      Number</font>:</font></font></div>
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      Agreement dated as of June 25, 2008 (&#8220;Term Loan</font></div>
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ameren8k06272008.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):
June
      25, 2008
Commission File
      Number
Exact
      Name of Registrant as
Specified
      in Charter;
State
of Incorporation;
Address and Telephone
      Number
IRS
      Employer
Identification
      Number
1-14756
Ameren Corporation
(Missouri
      Corporation)
1901
      Chouteau Avenue
St.
      Louis, Missouri 63103
(314)
      621-3222
43-1723446
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
1.01    Entry into a Material Definitive Agreement.
On June 25, 2008, Ameren Corporation
("Ameren"), JPMorgan Chase Bank, N.A., as agent and the other lenders identified
therein entered into a Credit Agreement dated as of June 25, 2008 (the "Term
Loan Agreement").  The Term Loan Agreement provides a $300 million
term loan to Ameren due June 24, 2009, which was fully drawn on June 26,
2008.  In the event Ameren issues capital stock or other equity
interests (except for director or employee benefit or dividend reinvestment plan
purposes), certain hybrid securities or, in amounts exceeding $25 million,
certain additional indebtedness, Ameren is required under the Term Loan
Agreement to use the net proceeds thereof to prepay amounts borrowed under the
Term Loan Agreement.  In addition, if Ameren replaces its Amended and
Restated Five-Year Revolving Credit Agreement, dated as of July 14, 2006, among
Ameren, certain of its subsidiaries, JPMorgan Chase Bank, N.A. as agent and the
other lenders identified therein (the "2006 Ameren Credit Agreement") with one
or more credit facilities having a total available commitment in excess of $1.15
billion, Ameren is required under the Term Loan Agreement to prepay amounts
borrowed thereunder in an amount equal to the excess new commitments over $1.15
billion.  Such mandatory prepayments are without premium or penalty
(except for any funding indemnity due in respect of Eurodollar
loans).  A copy of the Term Loan Agreement is filed as Exhibit 10.1 to
this Current Report on Form 8-K.
Borrowings
under the Term Loan Agreement will bear interest, at the election of Ameren, at
(1) a Eurodollar rate plus a margin, which margin is subject to a floor of 0.90%
per annum and a cap of 1.50% per annum or (2) a rate equal to the higher of the
prime rate of JPMorgan Chase Bank, N.A or the federal funds effective rate plus
½% per annum.
Ameren
will use the proceeds borrowed under the Term Loan Agreement for general
corporate purposes, including without limitation, to reduce amounts borrowed
under the 2006 Ameren Credit Agreement which would make additional amounts
available for borrowing thereunder.
The obligations of Ameren under the
Term Loan Agreement are unsecured.  No subsidiary of Ameren is a party
to, guarantor of, or borrower under, the Term Loan Agreement.
The Term
Loan Agreement has terms similar to the 2006 Ameren Credit Agreement (a copy of
which was filed as Exhibit 10.1 to the Form 8-K filed July 18, 2006) except that
amounts prepaid under the Term Loan Agreement may not be
reborrowed.  The Term Loan Agreement contains non-financial covenants
including restrictions on the ability to incur liens, dispose of assets and
merge with other entities.  In addition, the Term Loan Agreement has
non-financial covenants to limit the ability of Ameren to invest in or transfer
assets to other entities, including affiliates.  The events of default
in the Term Loan Agreement, including a cross default to the occurrence of an
event of default under the 2006 Ameren Credit Agreement or any other agreement
covering indebtedness of Ameren and its Subsidiaries (as defined in the Term
Loan Agreement) in excess of $25 million in the aggregate, are similar to those
contained in the 2006 Ameren Credit Agreement.  "Subsidiary" is
defined in the Term Loan Agreement to include all entities in which Ameren has
at least a majority control but excludes, for most purposes under the Term Loan
Agreement, project finance subsidiaries, non-material subsidiaries and special
purpose entities formed to conduct permitted securitization
transactions.  Also excluded from the definition of "Subsidiary" and
accordingly not subject to the covenants and representations and warranties
under the Term Loan Agreement are Central Illinois Public Service Company,
AmerenEnergy Resources Generating Company, CILCORP Inc., Central Illinois Light
Company and Illinois Power Company and each of their subsidiaries.
The Term
Loan Agreement requires Ameren to maintain consolidated indebtedness of not more
than 65% of consolidated total capitalization.
JPMorgan
Chase Bank, N.A. and certain of the other lenders are also lenders under other
credit agreements of Ameren and its subsidiaries and certain of them provide
other commercial or investment banking services to Ameren and its subsidiaries
from time to time.
-2-
ITEM 2.03   
 Creation of a Direct Financial Obligation or an Obligation under an
Off-Balance Sheet Arrangement of a Registrant.
See Item 1.01 above for a
description of the Term Loan Agreement, a copy of which is attached hereto as
Exhibit 10.1 and is incorporated herein by reference.
ITEM
9.01    Financial Statements and Exhibits.
(d)
Exhibits
Exhibit
      Number
:
Registrant(s):
Title
:
10.1
Ameren
Credit
      Agreement dated as June 25, 2008 ("Term Loan
Agreement")
-3-
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/ Jerre E.
Birdsong
Jerre E.
Birdsong
Vice
President and Treasurer
Date:  June
27, 2008
-4-
Exhibit
Index
Exhibit
      Number
:
Registrant:
Title
:
10.1
Ameren
Credit
      Agreement dated as of June 25, 2008 ("Term Loan
Agreement")
-5-