Geothermal 2

Power plant · Geothermal

Key facts

Power plant · Geothermal Out of service

Commissioned: 1985
Net generation, 2025: 321,675 MWh
Grid: 230 kV to Pacific Gas & Electric Co (CISO)
Location: Sonoma County, California
Operated by: Northern California Power AgnySourceEIA-860M Preliminary Monthly Electric Generator Inventory

Net generation MWh by year, 2002 to 2026

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All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory

Attributes
Attribute	Value
Grid	Nerc region WECC Report year 2025 Grid voltage kv 230 Transmission owner Pacific Gas & Electric Co Balancing authority code CISO Balancing authority name California Independent System Operator
Eia status	By code OP Mw 55 Units 1 OS Mw 55 Units 1 Standby mw 0 Status rule majority_mw_out_of_service In service mw 110 Out of service mw 55
Fuel burned (MMBtu), 2025	1,097,554
Capacity factor, 2025	0.334
Net generation (MWh), 2025	321,675
Balancing authority code	CISO

3 sources

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
EIA-860M Preliminary Monthly Electric Generator Inventory

Projects within 25 km, nearest first.
Project	Kind	Away	MW
Western GeoPower Unit 1 Withdrawn	Geothermal	12.2 km	25
Buckeye Geothermal Power Plant Postponed	Geothermal	13.9 km	56.9
Wild Horse Power Plant Postponed	Geothermal	14.5 km	48

Sources