Trinity

Hydro power plant · Trinity County, California

Nameplate capacity
140 MW
Rank in California
#201
of 1,897 plants
In service since
1964
February 1964

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
U S Bureau of Reclamation
County
Trinity County
Generating units
2
Share of state capacity
0.13%
Rank among hydro plants in California
#25 of 244
EIA plant code
451

Generating units

Individual generating units at Trinity
UnitTechnologyNameplateSummerOnlineStatus
1Conventional Hydroelectric70 MW70 MW1964Operating
2Conventional Hydroelectric70 MW70 MW1964Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

Similarly sized plants in California

Pit 5Hydro142 MW
Panoche Valley Solar FarmSolar140 MW
Midway Peaking LLCNatural gas140 MW
Kerckhoff 2Hydro140 MW

About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 140 MW solar plant and a 140 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All California power plants · What California actually generates