SOLVAY S.A. A revenue for the last year amounted to 4.88 B EUR, the most of which — 2.73 B EUR — came from its highest performing source at the moment, Basic Chemicals. The greatest contribution to the revenue figure was made by Other — last year it brought SOLVAY S.A. A 1.47 B EUR, and the year before that — 3.81 B EUR.