EXECUTION VERSION INTERSTATE POWER AND LIGHT COMPANY (an Iowa corporation) 5.875% SENIOR DEBENTURES DUE 2018 PURCHASE AGREEMENT Dated: September 10, 2003 TABLE OF CONTENTSPurchase Agreement • September 11th, 2003 • Interstate Power & Light Co • Electric & other services combined • New York
Contract Type FiledSeptember 11th, 2003 Company Industry Jurisdiction