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Preliminary 2025 facility recordOperating

Middletown, CA · EIA plant 52158

Aidlin Geothermal Power Plant

Aidlin Geothermal Power Plant is a geothermal power facility in Middletown, CA, with 25 MW of operating capacity.

Open on mapView CA profileOpen EIA source
Operating capacity25 MW2 operating generators
Proposed capacity0 MW0 proposed generators
UtilityGeysers Power Co LLCEIA-reported operator
Balancing authorityCISOCalifornia Independent System Operator

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Geothermal25 MW
ProposedNo proposed capacity reported
Reported technologiesGeothermal

Nearby in CA

Related facilities

CA · 6.1 miBottle Rock Power55 MW →CA · 7.1 miASTI1 MW →CA · 7.4 miSonoma California Geothermal78 MW →CA · 8.1 miCalistoga Power Plant176 MW →

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 methodologyEIA-860 source