LNT) announced the pricing of its public offering of $725 million aggregate principal amount of 5.750% junior subordinated notes due 2056. The junior subordinated notes will be due on April 1, 2056. Alliant Energy intends to use the net proceeds from this offering to reduce outstanding commercial paper, retire long term debt and/or for general corporate purposes. The closing of the offering is expected to occ. MADISON, Wis.--(BUSINESS WIRE)--Alliant Energy Corporation ("Alliant Energy†) (NASDAQ: ...