Mammoth G1

Mammoth G1 is a geothermal power facility in Mammoth lakes, CA, with 10 MW of operating capacity.

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Operating capacity10 MW2 operating generators

Proposed capacity0 MW0 proposed generators

UtilityOrmat Nevada IncEIA-reported operator

Balancing authorityCISOCalifornia Independent System Operator

Capacity profile

Fuel and technology

Nameplate capacity

Operating

Geothermal10 MW

ProposedNo proposed capacity reported

Reported technologiesGeothermal

Source quality

Preliminary facility data

This page uses the EIA-860 2025 Early Release. EIA identifies the release as preliminary, so it should not be used for official state or national aggregation. Capacity is nameplate capacity, not real-time output or annual generation.

Read methodology EIA-860 source

Mammoth G1

Fuel and technology

Related facilities

Preliminary facility data