FILER:

    COMPANY DATA:
    COMPANY CONFORMED NAME:                WISCONSIN POWER AND LIGHT COMPANY
    CENTRAL INDEX KEY:
    STANDARD INDUSTRIAL CLASSIFICATION:
    IRS NUMBER:
    STATE OF INCORPORATION:
    FISCAL YEAR END:

    FILING VALUES:
    FORM TYPE:                             U-6B-2
    SEC ACT:
    SEC FILE NUMBER:                       040-00459
    FILM NUMBER:

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

    MAIL 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

                       WISCONSIN POWER AND LIGHT COMPANY


     This  certificate  is filed by Wisconsin  Power and Light Company  ("WPL").
This  certificate  is notice that WPL,  during the period  from  January 1, 2003
through  March 31,  2003,  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 WPL.

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, 2003 through March 31,
     2003

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 52 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),  :
        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, :  X

13.  Not Applicable

14.  Not Applicable

15.  Exempt from provisions of 6(a) under Rule 52.




                                      WISCONSIN POWER AND LIGHT CO.

Date: May 2, 2003               By:  /s/ Steven F Price
     --------------                 ---------------------------------------
                                      Steven F Price, Assistant Treasurer



                                  Form U-6B-2
                                   Schedule 1

                       WISCONSIN POWER AND LIGHT COMPANY

               PERIOD FROM JANUARY 1, 2003 THROUGH MARCH 31, 2003

1.   During the period  from  January 1, 2003  through  March 31,  2003,  WPL
issued commercial paper as follows:


                                                                          
                        January            February              March              Quarter
                      --------------------------------------------------------------------------------

 Begin Balance         $ 60,000,000       $ 40,000,000       $  53,000,000       $  60,000,000
 CP Issued             $ 68,000,000       $ 69,500,000       $ 100,000,000       $ 237,500,000
 CP Matured            $ 88,000,000       $ 56,500,000       $  96,500,000       $ 241,000,000
 Ending Balance        $ 40,000,000       $ 53,000,000       $  56,500,000       $  56,500,000



2.   The weighted average interest rate for the period was as follows:


                   
    January         1.528%
    February        1.439%
    March           1.414%
    Quarter         1.465%