NRG ENERGY INC revenue for the last year amounted to 489.56 B MXN, the most of which — 213.11 B MXN — came from its highest performing source at the moment, East, the year earlier bringing 326.96 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought NRG ENERGY INC 489.56 B MXN, and the year before that — 615.23 B MXN.