MADISON, Wis.–(BUSINESS WIRE)–Interstate Power and Light Company (“IPL”), a wholly owned subsidiary of Alliant Energy Corporation (NASDAQ: LNT), announced the pricing of its public offering of $500 million aggregate principal amount of 5.100% senior debentures due 2031. The senior debentures will be due on September 30, 2031. IPL intends to use the net proceeds from this offering to reduce outstanding capital under its receivables purchase and sale program, to reduce outstanding commercial pa