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United States › Power plants › Hydroelectric plants › California

HYDROELECTRIC PLANTS

Thermalito

Thermalito is a 115 MW operating hydroelectric plant in Butte County, California, operated by California Dept. of Water Resources.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingFeb 1968 (current stage)
  5. Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
1Conventional Hydroelectric33 MW OperatingNov 1968
2Hydroelectric Pumped Storage28 MW OperatingJul 1968
3Hydroelectric Pumped Storage28 MW OperatingJul 1968
4Hydroelectric Pumped Storage28 MW OperatingFeb 1968

Plant details

Operator
California Dept. of Water Resources
Location
Butte County, California
Balancing authority
CISO
Sector
Electric Utility
Capacity
Operating: 115 MW
First unit online
Feb 1968
EIA plant ID
438

Location

39.5149, -121.6301

Nearby power plants

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem