AMERICAN ELECTRIC POWER CO INC COM STK USD6.50 revenue for the last year amounted to 19.00 B USD, the most of which — 11.30 B USD — came from its highest performing source at the moment, Vertically Integrated Utilities, the year earlier bringing 11.29 B USD. The greatest contribution to the revenue figure was made by United States — last year it brought AMERICAN ELECTRIC POWER CO INC COM STK USD6.50 18.98 B USD, and the year before that — 19.64 B USD.