Alliant Energy: Board names Patricia Kampling President & COO and Thomas Hanson CFO

Media Contact: Scott Reigstad (608) 458-3145

Investor Relations Contact: Susan Gille (608) 458-3956

MADISON, WI – Alliant Energy Corporation (NYSE: LNT) announced today that its Board of Directors has elected Patricia Kampling to serve as President and Chief Operating Officer, effective February 9, 2011. Kampling has served as Alliant Energy’s Chief Financial Officer.

“With 24 years at Alliant Energy under my belt, it is time to begin an orderly succession process,” said Bill Harvey, Chairman and Chief Executive Officer of Alliant Energy. “Pat has provided excellent leadership in her financial roles within the organization since 2005 and has a wealth of industry-related experience guiding her decisions that she will continue to utilize in this position.”

“We have an exceptional team in place at Alliant Energy and I feel privileged to play a greater role in leading them to even higher levels of success in the future,” said Kampling. “I appreciate the opportunity and look forward to addressing the challenges facing our industry.”

Thomas Hanson has been named Chief Financial Officer and Treasurer, succeeding Kampling. Hanson has served as Chief Accounting Officer and Treasurer. He has been with the organization since 1980.

“Tom’s experience with the company, and within the utility industry, makes him a natural choice to lead our financial organization,” said Harvey. “His financial experience and in-depth understanding of the business and the challenges faced within our industry will help position Alliant Energy to remain successful into the future.”

Robert Durian will assume the responsibilities of the Chief Accounting Officer in addition to his current role of Controller. He has been with the organization for eighteen years in various finance and accounting positions.

Harvey will continue to serve as Chairman and CEO of Alliant Energy Corporation.