EX-23.b DELOITTE & TOUCHE Northwest Bank Building Telephone: (319) 322-4415 101 West Second Street Facsimile: (319) 322-2002 Davenport, Iowa 52801-1813 CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in Registration Statement No. 33-59352 on Form S-3 and Registration Statement No. 33-32529 on Form S-8 of Interstate Power Company of our reports dated February 3, 1994, appearing in and incorporated by reference in the Annual Report on Form 10-K of Interstate Power Company for the year ended December 31, 1993. /s/ Deloitte & Touche Deloitte & Touche March 11, 1994