National Grid Transco, PLC National Grid PLC (NEW) revenue for the last year amounted to 25.41 B USD, the most of which — 7.66 B USD — came from its highest performing source at the moment, New York, the year earlier bringing 8.42 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought National Grid Transco, PLC National Grid PLC (NEW) 13.55 B USD, and the year before that — 14.50 B USD.