Calpine Corp; Comision Federal de; Energy Development Corp.; Electricadad (CFE) Enel SpA; Chevron Corporation; COMISION FEDERAL DE ELECTRICADAD (CFE); ENEL SPA; U.S. Geothermal Inc.; KenGen; Contact Energy; Orkuveita Reykjavikur; Pertamina Geothermal Energy; CalEnergy Generation; Star Energy Ltd; Northern California Power Agency; Terra-Gen
LLC; ORMAT; Aboitiz Power; Calpine Corporation; Mercury; Pertamina Geothermal Energy; Raya Group; Cyrq Energy