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 25, 2000


                           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.
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          On January 25, 2000, Alliant Energy Corporation issued a press release
announcing  that Alliant Energy  Resources,  Inc., the parent company of Alliant
Energy  Corporation's  diversified  operations,  agreed to acquire a significant
stake in four  Brazilian  electric  utilities.  A copy of such press  release is
filed as Exhibit 99.1 and is incorporated by reference herein.


Item 7.   Financial Statements and Exhibits.
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          (a)  Not applicable.

          (b)  Not applicable.

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

               (99.1) Alliant Energy Corporation Press Release dated January 25,
                      2000.



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                                   SIGNATURES
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          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 25, 2000                 By: /s/ Edward M. Gleason
                                            ----------------------------------
                                            Edward M. Gleason
                                            Vice President-Treasurer and
                                            Corporate Secretary




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                           ALLIANT ENERGY CORPORATION

                   Exhibit Index to Current Report on Form 8-K
                             Dated January 25, 2000


Exhibit
Number
- ------

(99.1)      Alliant Energy Corporation Press Release dated January 25, 2000.



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