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:                      070-10052
 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. 70-10052

REPORT PERIOD
July 1, 2003 through September 30, 2003

In the Matter of

ALLIANT ENERGY CORPORATION, ET AL

     ALLIANT ENERGY  CORPORATION  ("AEC") hereby certifies on behalf of itself ,
Wisconsin Power and Light Company,  Interstate  Power and Light Company ("IPL"),
and Alliant Energy Corporate Services,  Inc. ("Services") that during the period
from July 1, 2003 through September 30, 2003 (the "Reporting Period"):


1(a). Alliant Energy Corporation issued commercial paper as follows:


                                                                        

                      July                August                September             Quarter
                 ----------------------------------------------------------------------------------
Begin Balance      $   86,000,000      $  114,000,000        $  102,000,000        $   86,000,000
CP Issued          $1,794,500,000      $1,682,000,000        $2,412,000,000        $5,888,500,000
CP Matured        ($1,766,500,000)    ($1,694,000,000)      ($2,416,000,000)      ($5,876,500,000)
Ending Balance     $  114,000,000      $  102,000,000        $   98,000,000        $   98,000,000



1(b).The weighted  average interest rate for the period for all commercial paper
     was as follows:


             
    July        1.712%
    August      1.695%
    September   1.679%
    Quarter     1.692%


1(c). Alliant Energy Corporation borrowed from Banks as follows:

           N/A

1(d).The weighted  average  interest rate for the period for the bank borrowings
     was as follows:

           N/A

2(a). Interstate Power and Light Company issued commercial paper as follows:


                                                                           
                      July                August                September             Quarter
                 ----------------------------------------------------------------------------------
Begin Balance      $  155,900,000      $  38,000,000         $  59,000,000         $  155,900,000
CP Issued          $   92,000,000      $ 162,500,000         $  54,500,000         $  309,000,000
CP Matured        ($  209,900,000)    ($ 141,500,000)       ($ 109,500,000)       ($  460,900,000)
Ending Balance     $   38,000,000      $  59,000,000         $   4,000,000         $    4,000,000



2(b).Weighted  Average for the interest rate for the period for commercial paper
     was as follows:


             
    July        1.221%
    August      1.183%
    September   1.185%
    Quarter     1.208%



3(a). Interstate Power and Light Company borrowed from Bank as follows:

           N/A

3(b).The weighted  average  interest rate for the period for the bank borrowings
     was as follows:

           N/A

4(a).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

IPL (*)                    0      155,900,000       155,900,000      250,000,000
WP&L     (**)              0       77,500,000        77,500,000              NA
SERVICES (***)    85,837,271                0        85,837,271              NA


(*)  IPL ceased borrowing from the Money Pool as of October 11, 2002.

(**) All  borrowings by WP&L from the Money Pool are exempt under Rule 52(a) and
     are shown here for  information  purposes only. WPL ceased  borrowings from
     the Money Pool as of July 25, 2002.

(***)Borrowings  by Services  are exempt under Rule 52(b) and are shown here for
     information purposes only.


5.   During  the  Reporting  Period,  the  weighted  average  interest  rate for
     borrowings through the Money Pool was 1.694%.

6.   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             $ 85,837,271      $ 65,162,729     $ 151,000,000     $1,000,000,000
________________


     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  70-10052,  and in
accordance  with the terms and conditions of the SEC's order dated June 21,2002,
permitting said Application-Declaration to become effective.


 DATED:  November 12, 2003

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

                                   BY:  ALLIANT ENERGY CORPORATION



                                   BY:   /s/ Thomas L Hanson
                                        -----------------------------------
                                        Thomas L. Hanson
                                        Vice President and Treasurer