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):   October 30, 2003


                          Alliant Energy Corporation
            ------------------------------------------------------
            (Exact name of registrant as specified in its charter)


   Wisconsin                    1-9894                    39-1380265
---------------            ----------------             -------------
(State or other            (Commission File             (IRS Employer
jurisdiction of                Number)               Identification No.)
incorporation)


              4902 North Biltmore Lane, Madison, Wisconsin 53718
         ------------------------------------------------------------
         (Address of principal executive offices, including zip code)


                                (608) 458-3311
                        -------------------------------
                        (Registrant's telephone number)



Item 7.    Financial Statements and Exhibits.
------     ---------------------------------

           (a)  Not applicable.

           (b)  Not applicable.

           (c)  Exhibits.  The following exhibits are being furnished herewith:
                --------

                (99.1)  Alliant Energy Corporation press release dated
                        October 30, 2003.

Item 12.   Results of Operations and Financial Condition.
-------    ---------------------------------------------

           On October  30,  2003,  Alliant  Energy  Corporation  issued a press
release  announcing  its earnings for the third  quarter  ended  September  30,
2003 and its  earnings  guidance  for 2003.  A copy of such  press  release  is
furnished as Exhibit 99.1 and is incorporated by reference herein.


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                                  SIGNATURES
                                  ----------

           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 hereunto duly authorized.

                                ALLIANT ENERGY CORPORATION



Date:  October 30, 2003         By:  /s/  John E. Kratchmer
                                     -----------------------------------
                                     John E. Kratchmer
                                     Vice President-Controller and Chief
                                     Accounting Officer




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                          ALLIANT ENERGY CORPORATION

                  Exhibit Index to Current Report on Form 8-K
                            Dated October 30, 2003


Exhibit
Number
------

(99.1)     Alliant Energy Corporation press release dated October 30, 2003.




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