IBERDROLA revenue for the last year amounted to 44.74 B EUR, the most of which — 23.55 B EUR — came from its highest performing source at the moment, Customers, the year earlier bringing 30.09 B EUR. The greatest contribution to the revenue figure was made by Spain — last year it brought IBERDROLA 16.98 B EUR, and the year before that — 18.33 B EUR.