Exhibit 24.4


                               POWER OF ATTORNEY

     WHEREAS,  AMEREN ENERGY GENERATING COMPANY, an Illinois corporation (herein
referred  to as the  "Company"),  is required  to file with the  Securities  and
Exchange  Commission,  under the  provisions of the  Securities  Exchange Act of
1934, as amended, its annual report on Form 10-K for the year ended December 31,
2003; and

       WHEREAS, each of the below undersigned holds the office or offices in the
Company set opposite his or her name;

     NOW,  THEREFORE,  each of the undersigned  hereby  constitutes and appoints
Thomas R. Voss and/or Warner L. Baxter  and/or Steven R. Sullivan  and/or Martin
J. Lyons and/or Jerre E. Birdsong the true and lawful  attorneys-in-fact  of the
undersigned,  for and in the name, place and stead of the undersigned,  to affix
the name of the undersigned to said Form 10-K and any amendments  thereto,  and,
for the  performance of the same acts, each with power to appoint in their place
and  stead  and as  their  substitute,  one or  more  attorneys-in-fact  for the
undersigned,  with full power of revocation; hereby ratifying and confirming all
that said attorneys-in-fact may do by virtue hereof.

     IN WITNESS WHEREOF, the undersigned have hereunto set their hands this 13th
day of February 2004:

<TABLE>
<S>                                                          <C>
Thomas R. Voss, President and Director
       (Principal Executive Officer)                                         /s/ Thomas R. Voss
                                                              ------------------------------------------------

Warner L. Baxter, Executive Vice President
       and Chief Financial Officer and Director
       (Principal Financial Officer)                                         /s/ Warner L. Baxter
                                                              -----------------------------------------------

Daniel F. Cole, Director                                                     /s/ Daniel. F. Cole
                                                              -----------------------------------------------

Richard A. Liddy, Director                                                   /s/ Richard A. Liddy
                                                              -----------------------------------------------

Richard A. Lumpkin, Director                                                 /s/ Richard A. Lumpkin
                                                              -----------------------------------------------

Paul L. Miller, Jr., Director                                                /s/ Paul L. Miller, Jr.
                                                              -----------------------------------------------

Douglas R. Oberhelman, Director                                              /s/ Douglas R. Oberhelman
                                                              -----------------------------------------------

Gary L. Rainwater, Director                                                  /s/ G. L. Rainwater
                                                              -----------------------------------------------

Harvey Saligman, Director                                                    /s/ Harvey Saligman
                                                              -----------------------------------------------

Steven R. Sullivan, Director                                                 /s/ Steve Sullivan
                                                              -----------------------------------------------

David A. Whiteley, Director                                                  /s/ David A. Whiteley
                                                              -----------------------------------------------

Martin J. Lyons, Vice President
       and Controller
       (Principal Accounting Officer)                                        /s/ Martin J. Lyons
                                                              -----------------------------------------------

</TABLE>


<PAGE>

                                                                    Exhibit 24.4

STATE OF MISSOURI        )
                         )  SS.
CITY OF ST. LOUIS        )

     On this 13th day of  February,  2004,  before  me, the  undersigned  Notary
Public in and for said State,  personally appeared the above-named  officers and
directors of Ameren  Energy  Generating  Company,  known to me to be the persons
described in and who executed the foregoing  power of attorney and  acknowledged
to me that they  executed  the same as their free act and deed for the  purposes
therein stated.

       IN TESTIMONY WHEREOF, I have hereunto set my hand and affixed my official
seal.


                                                /s/ S. A. Kitchens
                                    --------------------------------------------
                                                    S. A. Kitchens
                                             Notary Public - Notary Seal
                                                  STATE OF MISSOURI
                                                 St. Louis County
                                         My Commission Expires: July 9, 2007