Ameren Corporation revenue for the last year amounted to 7.62 B USD, the most of which — 3.96 B USD — came from its highest performing source at the moment, Ameren Missouri, the year earlier bringing 3.83 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought Ameren Corporation 7.62 B USD, and the year before that — 7.50 B USD.