Exelon Corp. revenue for the last year amounted to 19.68 B EUR, the most of which — 7.09 B EUR — came from its highest performing source at the moment, Commonwealth Edison Company, the year earlier bringing 5.37 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought Exelon Corp. 19.68 B EUR, and the year before that — 17.83 B EUR.