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):   January 29, 2002


                          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)


             222 West Washington Avenue, Madison, Wisconsin 53703
         ------------------------------------------------------------
         (Address of principal executive offices, including zip code)


                                (608) 252-3311
                        -------------------------------
                        (Registrant's telephone number)



Item 5.    Other Events.
------     ------------

           On January  29,  2002,  Alliant  Energy  Corporation  issued a press
release  announcing  its  earnings  for  the  fourth  quarter  and  year  ended
December 31,  2001.  A copy of such press  release is filed as Exhibit 99.1 and
is incorporated by reference herein.


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

           (a)   Not applicable.

           (b)   Not applicable.

           (c)   Exhibits.  The following exhibit is being filed herewith:
                 --------

                 (99.1)    Alliant  Energy   Corporation   Press  Release  dated
                           January 29, 2002.

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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:  January 29, 2002          By:
                                     ------------------------------
                                     John E. Kratchmer
                                     Corporate Controller and Chief
                                     Accounting Officer

                                       3


                          ALLIANT ENERGY CORPORATION

                  Exhibit Index to Current Report on Form 8-K
                            Dated January 29, 2002


Exhibit
Number
------

(99.1)     Alliant Energy Corporation Press Release dated January 29, 2002.



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