SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 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):
                                January 14, 2004


<TABLE>
<CAPTION>


                Exact Name of Registrant as specified in its charter;
Commission      State of Incorporation;                                       IRS Employer
File Number     Address and Telephone Number                                  Identification No.
-----------     ----------------------------                                  ------------------
<S>            <C>                                                               <C>
1-14756         Ameren Corporation                                                43-1723446
                (Missouri Corporation)
                1901 Chouteau Avenue
                St. Louis, Missouri 63103
                (314) 621-3222

1-2967          Union Electric Company                                            43-0559760
                (Missouri Corporation)
                1901 Chouteau Avenue
                St. Louis, Missouri 63103
                (314) 621-3222

</TABLE>


<PAGE>


ITEM 5. OTHER EVENTS AND REGULATION FD DISCLOSURE.

     Reference is made to the Current Report on Form 8-K dated December 10, 2003
of Ameren  Corporation and Union Electric Company (AmerenUE) for a discussion of
the  settlement  reached  with  respect to  AmerenUE's  May 2003  request to the
Missouri  Public  Service  Commission  for an increase  in natural gas  delivery
rates. On January 14, 2004, Ameren Corporation issued a press release announcing
that the Missouri  Public  Service  Commission  on January 13, 2004 approved the
settlement  authorizing  new  natural  gas  delivery  rates  that will  increase
AmerenUE's  operating revenues by approximately $13 million annually.  A copy of
the press release is attached hereto as Exhibit 99.1 and is incorporated  herein
by this reference.

     This combined Form 8-K is being filed separately by Ameren  Corporation and
Union Electric Company  (Registrants).  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.


ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS.

     (a) Financial Statements: Not applicable

     (b) Pro Forma Financial Information: Not applicable

     (c) Exhibits:


     Exhibit
      No.      Description
     -------   -----------

     99.1      Press Release issued on January 14, 2004 by Ameren Corporation.


<PAGE>


                                   SIGNATURES

     Pursuant to the  requirements of the Exchange Act, 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.



                                                 AMEREN CORPORATION
                                                     (Registrant)

                                               -------------------------------
                                                     Martin J. Lyons
                                                Vice President and Controller

                                                (Principal Accounting Officer)



                                                UNION ELECTRIC COMPANY
                                                     (Registrant)

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


Date:  January 14, 2004

<PAGE>




                                  Exhibit Index
                                  -------------

Exhibit No.                    Description
-----------                    -----------

      99.1      Press release issued on January 14, 2004 by Ameren Corporation.
[{"type": "8-K", "sequence": "1", "filename": "amc-ue8kjan142004.txt", "description": "AMEREN/UE8KJAN142004", "secsgml_size_bytes": 4369}]
[{"company-data": {"conformed-name": "AMEREN CORP", "cik": "0001002910", "assigned-sic": "4931", "irs-number": "431723446", "state-of-incorporation": "MO", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-14756", "film-number": "04523969"}, "business-address": {"street1": "1901 CHOUTEAU AVE", "street2": "MC 1370", "city": "ST LOUIS", "state": "MO", "zip": "63166-6149", "phone": "431723446"}, "mail-address": {"street1": "1901 CHOUTEAU AVE", "street2": "MC 1370", "city": "ST LOUIS", "state": "MO", "zip": "63103"}}, {"company-data": {"conformed-name": "UNION ELECTRIC CO", "cik": "0000100826", "assigned-sic": "4911", "irs-number": "430559760", "state-of-incorporation": "MO", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-02967", "film-number": "04523970"}, "business-address": {"street1": "1901 CHOUTEAU AVENUE", "street2": "MC 1370", "city": "ST LOUIS", "state": "MO", "zip": "63166", "phone": "3146213222"}, "mail-address": {"street1": "1901 CHOUTEAU AVENUE", "street2": "MC 1370", "city": "ST LOUIS", "state": "MO", "zip": "63166"}}]
SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 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):
                                January 14, 2004
Exact Name of Registrant as specified in its charter;
Commission      State of Incorporation;                                       IRS Employer
File Number     Address and Telephone Number                                  Identification No.
-----------     ----------------------------                                  ------------------
1-14756         Ameren Corporation                                                43-1723446
                (Missouri Corporation)
                1901 Chouteau Avenue
                St. Louis, Missouri 63103
                (314) 621-3222

1-2967          Union Electric Company                                            43-0559760
                (Missouri Corporation)
                1901 Chouteau Avenue
                St. Louis, Missouri 63103
                (314) 621-3222
ITEM 5. OTHER EVENTS AND REGULATION FD DISCLOSURE.

     Reference is made to the Current Report on Form 8-K dated December 10, 2003
of Ameren  Corporation and Union Electric Company (AmerenUE) for a discussion of
the  settlement  reached  with  respect to  AmerenUE's  May 2003  request to the
Missouri  Public  Service  Commission  for an increase  in natural gas  delivery
rates. On January 14, 2004, Ameren Corporation issued a press release announcing
that the Missouri  Public  Service  Commission  on January 13, 2004 approved the
settlement  authorizing  new  natural  gas  delivery  rates  that will  increase
AmerenUE's  operating revenues by approximately $13 million annually.  A copy of
the press release is attached hereto as Exhibit 99.1 and is incorporated  herein
by this reference.

     This combined Form 8-K is being filed separately by Ameren  Corporation and
Union Electric Company  (Registrants).  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.

ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS.

     (a) Financial Statements: Not applicable

     (b) Pro Forma Financial Information: Not applicable

     (c) Exhibits:

     Exhibit
      No.      Description
     -------   -----------

     99.1      Press Release issued on January 14, 2004 by Ameren Corporation.
SIGNATURES

     Pursuant to the  requirements of the Exchange Act, 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.

                                                 AMEREN CORPORATION
                                                     (Registrant)

                                               -------------------------------
                                                     Martin J. Lyons
                                                Vice President and Controller

                                                (Principal Accounting Officer)

                                                UNION ELECTRIC COMPANY
                                                     (Registrant)

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

Date:  January 14, 2004
Exhibit Index
                                  -------------

Exhibit No.                    Description
-----------                    -----------

      99.1      Press release issued on January 14, 2004 by Ameren Corporation.