DIAMONDBACK ENER I revenue for the last year amounted to 7.08 B CHF, the most of which — 7.03 B CHF — came from its highest performing source at the moment, Upstream, the year earlier bringing 8.85 B CHF. The greatest contribution to the revenue figure was made by United States — last year it brought DIAMONDBACK ENER I 7.08 B CHF, and the year before that — 8.92 B CHF.