FIRSTENERGY CORP revenue for the last year amounted to 11.69 B EUR, the most of which — 9.79 B EUR — came from its highest performing source at the moment, Regulated Distribution, the year earlier bringing 9.88 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought FIRSTENERGY CORP 11.66 B EUR, and the year before that — 11.64 B EUR.