WEC Energy Group, Inc. revenue for the last year amounted to 8.89 B USD, the most of which — 6.63 B USD — came from its highest performing source at the moment, Utility Operations - Wisconsin, the year earlier bringing 6.96 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought WEC Energy Group, Inc. 8.89 B USD, and the year before that — 9.60 B USD.