Exhibit 32.2

 Written Statement of the Chief Executive Officer and Chief Financial Officer
                   Pursuant to 18 U.S.C. Section 1350

Solely for the purposes of complying with 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, we, the
undersigned Chief Executive Officer and Chief Financial Officer of Interstate
Power and Light Company (the "Company"), hereby certify, based on our
knowledge, that the Quarterly Report on Form 10-Q of the Company for the
quarter ended June 30, 2003 (the "Report") fully complies with the
requirements of Section 13(a) of the Securities Exchange Act of 1934 and that
information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company.




/s/ Erroll B. Davis, Jr.
------------------------
Erroll B. Davis, Jr.
Chairman and Chief Executive Officer




/s/ Thomas M. Walker
--------------------
Thomas M. Walker
Executive Vice President and Chief Financial Officer

August 14, 2003