SIEMENS ENERGY AG NA O.N. revenue for the last year amounted to 34.47 B EUR, the most of which — 10.78 B EUR — came from its highest performing source at the moment, Gas Services. The greatest contribution to the revenue figure was made by Europe, Commonwealth of Independent States, Africa, Middle East — last year it brought SIEMENS ENERGY AG NA O.N. 12.24 B EUR, and the year before that — 11.96 B EUR.