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 April 1, 2002  through  June 30,  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 April 1, 2002  through  June 30,
     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:  August 9, 2002              By:
       -----------------               -----------------------------------------
                                       Thomas Hanson, Treasurer




                           Alliant Energy Corporation
                                  Form U-6B-2

                                   Schedule 1


PERIOD FROM APRIL 1, 2002 THROUGH JUNE 30, 2002

     1.  During the period from April 1, 2002  through  June 30,  2002,  Alliant
Energy Corporation issued commercial paper to fund borrowings by participants in
the Utility Money Pool and for other business purposes as follows:

                                               
                       April            May             June
                      -------------------------------------------------------
   Beginning Balance  $ 47,224,000    $  24,000,000    $  99,694,000
   CP Issued          $ 36,000,000    $ 231,000,000    $ 278,500,000
   CP Matured         $ 59,224,000    $ 155,306,000    $ 262,459,000
   Ending Balance     $ 24,000,000    $  99,694,000    $ 115,735,000



     2. The weighted average interest rate for the period was 2.20%.





                           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       2,332,340,637
                                               -------------------
     Total                                     $   3,642,988,637
                                                              5%
                                               -------------------
     5% of Total                               $     182,149,432
                                               ===================