QUANTA SERVICES revenue for the last year amounted to 17.58 B CHF, the most of which — 8.16 B CHF — came from its highest performing source at the moment, Electric Power, the year earlier bringing 8.27 B CHF. The greatest contribution to the revenue figure was made by United States — last year it brought QUANTA SERVICES 15.08 B CHF, and the year before that — 13.31 B CHF.