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:                           35-CERT
  SEC ACT:
  SEC FILE NUMBER:                     070-9317
  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




                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington D. C. 20549

PUBLIC UTILITY HOLDING COMPANY ACT OF 1935
File No. 70-9317

REPORT PERIOD
January 1, 2002 through March 31, 2002

In the Matter of

ALLIANT ENERGY CORPORATION, ET AL

     ALLIANT ENERGY CORPORATION ("AEC") hereby certifies on behalf of itself and
IES Utilities  Inc.  ("IESU"),  Interstate  Power Company  ("IPC"),  and Alliant
Energy Corporate Services, Inc. ("Services") that during the period from January
1, 2002 through March 31, 2002 (the "Reporting Period"):

1.   For each of the  companies  participating  in the Utility Money Pool during
     the Reporting Period, the maximum principal amount of short-term borrowings
     outstanding  from the Utility  Money Pool,  sources  other than the Utility
     Money Pool, and the maximum total short-term borrowings  outstanding during
     the Reporting Period,  and the Securities and Exchange  Commission  ("SEC")
     borrowing limit for each  participant as of the end of the Reporting Period
     were as follows:



                                                            
                                   Maximum
                 Maximum           Other            Maximum
                Money Pool        Short-Term         Total              SEC
Company         Borrowings        Borrowings       Borrowings          Limit

IESU             $ 28,424,976      $ 0.00        $ 28,424,976     $ 150,000,000
IPC              $ 41,549,602      $ 0.00        $ 41,549,602     $ 100,000,000
WP&L     (*)     $ 91,153,418      $ 0.00        $ 91,153,418       NA
SERVICES         $ 81,939,771      $ 0.00        $ 81,939,771     $ 100,000,000


     (*) All  borrowings by WP&L from the Money Pool are exempt under Rule 52(a)
and are shown here for information purposes only.

2.   During  the  Reporting  Period,  the  weighted  average  interest  rate for
     borrowings through the Money Pool was 1.96 %.


3.   The maximum amount of AEC's  short-term  borrowings on behalf of itself and
     the above named participants in the Utility Money Pool during the Reporting
     Period,  and its SEC limit as of the end of the Reporting  Period,  were as
     follows:

                                                        

                Maximum         Maximum          Maximum
                Loans to       Corporate       Short-Term           SEC
               Money Pool      Borrowings      Borrowings          Limit

AEC           $ 182,958,935    $ 206,032,820   $ 77,197,000      $ 475,000,000
________________



     Said  transactions  have been carried out in accordance  with the terms and
conditions   of,   and  for  the   purpose   represented   in,   the   Form  U-1
Application-Declaration,  as  amended,  of AEC, et al, in File  70-9317,  and in
accordance  with the terms and  conditions of the SEC's order dated December 15,
2000, permitting said Application-Declaration to become effective.


        DATED:  May  14, 2002

                                     ALLIANT ENERGY CORPORATION
                                     IES UTILITIES INC.
                                     INTERSTATE POWER COMPANY
                                     WISCONSIN POWER AND LIGHT COMPANY
                                     ALLIANT ENERGY CORPORATE SERVICES INC.

                                     BY:  ALLIANT ENERGY CORPORATION



                                     BY: _________________________________
                                     Thomas L. Hanson
                                     Vice President, Treasurer
                                     and Corporate Secretary