Compare power plants

Registry, engineering, and operating metrics shown on a consistent EIA basis.

Metric	Calistoga Power Plant Lake County	Geysers Unit 5-20 Sonoma County
Capacity	176.4 MW	1,236 MW
Technology	Geothermal	Geothermal
Operator	Geysers Power Co LLC	Geysers Power Co LLC
Operating units	2	12
Latest 12-month generation	453.3 GWh	4.19 TWh
Latest complete-year capacity factor	29.4% (2025)	39.9% (2025)
National technology rank	#2 of 63	#1 of 63
Latest EIA report	2026-06	2026-06

Generation comes from EIA-923. Capacity, unit counts, technology, and reporting relationships come from EIA-860. Incomplete reporting years are excluded from capacity-factor comparisons.