Key list: geothermal power plant operators by capacity

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This month our power industry key list brings you the 15 largest geothermal power plant operators by capacity, as ranked by GlobalData's Power Intelligence Centre. All numbers up to date as of May 2021.

Company nameEntity typeNumber of employeesActive capacity (MW)
Calpine CorpPrivate2,2562,885
Lopez IncPrivate-2,320
Ormat Technologies IncPublic1,4021,451
Comision Federal de ElectricidadGovernment-918
Terra-Gen Holdings LLCPrivate-691
Contact Energy LtdPublic934569
Star Energy Geothermal (Salak-Darajat) BVPrivate-520
Kenya Electricity Generating Co LtdPublic2,519508
Real Goods Solar IncPublic70436
Orkuveita ReykjavikurPrivate602423
PT Pertamina (Persero)Government31,569367
CalEnergy Generation Operating CoPrivate-366
Sarulla Operations LtdPrivate-330
Kipas Holdings A.SPrivate-324
Instituto Costarricense de ElectricidadGovernment-270