ALLIANT ENERGY CORP COM STK USD0.01 revenue for the last year amounted to 3.98 B USD, the most of which — 2.05 B USD — came from its highest performing source at the moment, Utility - Interstate Power and Light Company. The greatest contribution to the revenue figure was made by United States — last year it brought ALLIANT ENERGY CORP COM STK USD0.01 3.98 B USD, and the year before that — 4.03 B USD.