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News Release

Alliant Energy Corporation declares common stock dividend

MADISON, Wis. – January 17, 2014 – Alliant Energy Corporation (NYSE: LNT) announced today quarterly dividends on common stock were declared by the Board of Directors.

The common stock dividend is $0.51 per share payable on February 14, 2014, to shareowners of record on close of business January 31, 2014.

Dividends on common stock have been paid for 273 consecutive quarters since 1946.