FILER:

  COMPANY DATA:
  COMPANY CONFORMED NAME:               ALLIANT ENERGY CORPORATION
  CENTRAL INDEX KEY:
  STANDARD INDUSTRIAL CLASSIFICATION:   ELECTRIC AND OTHER SERVICES COMB.[4931]
  IRS NUMBER:                           391380265
  STATE OF INCORPORATION:               WI
  FISCAL YEAR END:                      12/31

  FILING VALUES:
  FORM TYPE:                            U-6B-2
  SEC ACT:
  SEC FILE NUMBER:
  FILM NUMBER:

  BUSINESS ADDRESS:
  STREET 1:                             4902 N Biltmore Lane
  CITY:                                 MADISON
  STATE:                                WI
  ZIP:                                  53718
  BUSINESS PHONE:                       608-458-3311

  MAILING ADDRESS
  STREET 1:                             P. O. BOX 77007
  CITY:                                 MADISON
  STATE:                                WI
  ZIP:                                  53707







                       SECURITIES AND EXCHANGE COMMISSION
                             Washington D. C. 20549

                                  FORM U-6B-2

                          Certificate of Notification

                           ALLIANT ENERGY CORPORATION

     This certificate is notice that Alliant Energy Corporation ("AEC"),  during
the period from January 1, 2002 through March 31, 2002,  has issued,  renewed or
guaranteed the security or securities  described herein, which issue, renewal or
guaranty was  exempted  from the  provisions  of Section 6(a) of the Act and was
neither the subject of a  declaration  or  application  on Form U-1 nor included
within the  exemption  provided  by Rule U-48  [Reg.  Section  250.48  Paragraph
36,621].

1.   Type of the  security -  Commercial  paper notes  issued by Alliant  Energy
     Corporation.

2.   Issue, renewal or guaranty - New Issues

3.   Principal amount - See Schedule 1

4.   Rate of interest - See Schedule 1

5.   Date of issue, renewal or guaranty - From January 1, 2002 through March 31,
     2002

6.   If renewal of  security,  give date of original issue - Not Applicable

7.   Date of maturity of each security - various ranging from 1 day to 100 days.

8.   Name of the person to whom each  security  was  issued, renewed or
     guarantied: Cede & Co.

9.   Collateral given with each security: None

10.  Consideration received for each security:  See Schedule 1

11.  Application of proceeds of each security:  See Schedule 1

12.  Indicate  by a check after  the  applicable  statement below  whether  the
     issue, renewal or guaranty of each security was exempt from the provisions
     of Section 6(a) because of
       a. the provisions contained in the first sentence of 6(b),  : X
       b. the provisions contained in the fourth sentence of 6(b),  :
       c. the provisions contained in any rule of the commission other than
          Rule U-48, :

13.  See Schedule 2.

14.  Not Applicable

15.  Not Applicable.




                                        ALLIANT ENERGY CORPORATION

Date:   May 3, 2002                 By:
        ----------------                -------------------------------
                                        Thomas Hanson, Treasurer





                           Alliant Energy Corporation
                                  Form U-6B-2

                                   Schedule 1


               PERIOD FROM JANUARY 1, 2002 THROUGH MARCH 31, 2002


          1.  During the period from  January 1, 2002  through  March 31,  2002,
     Alliant Energy  Corporation  issued  commercial paper to fund borrowings by
     participants  in the Utility Money Pool and for other business  purposes as
     follows:



                                January         February          March
                                                       
                               ------------    ------------     --------------
        Beginning Balance     $ 68,389,000    $ 28,953,000      $ 12,000,000
        Cp Issued             $ 25,000,000    $ 18,000,000      $ 59,990,000
        CP Matured            $ 64,436,000    $ 34,953,000      $ 24,766,000
        Ending Balance        $ 28,953,000    $ 12,000,000      $ 47,224,000
        Max Daily Balance     $ 77,197,000    $ 34,953,000      $ 49,990,000




          2. The weighted average interest rate for the period was 2.58%.




                           Alliant Energy Corporation
                                  Form U-6B-2

                                   Schedule 2


Calculation under item 13 Form U-6B-2:

     Principal  amount of securities  for which Alliant  Energy  Corporation  is
primarily or secondarily  liable and fair market value of equity  securities for
the Reporting Period:

                                               

        Alliant Energy Corporation Senior Notes      $    24,000,000
        Guaranteed Long-term debt of AER               1,286,648,000
        Alliant Energy Corporation Common Stock        2,728,629,000
                                                    -------------------
        Total                                        $ 4,039,277,000
                                                                  5%
                                                    -------------------
        5% of Total                                  $   201,964,000
                                                    ===================