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Haynes

Natural gas power plant · Los Angeles County, California

Nameplate capacity
1,739 MW
Rank in California
#3
of 1,897 plants
In service since
1962
September 1962

Details

Primary fuel
Natural gas
Technology
Natural Gas Fired Combined Cycle
Operator
Los Angeles Department of Water & Power
County
Los Angeles County
Generating units
11
Share of state capacity
1.61%
Rank among natural gas plants in California
#1 of 309
EIA plant code
400

Generating units

Individual generating units at Haynes
UnitTechnologyNameplateSummerOnlineStatus
8Natural Gas Fired Combined Cycle264 MW235 MW2005Operating
1Natural Gas Steam Turbine230 MW222 MW1962Operating
2Natural Gas Steam Turbine230 MW222 MW1963Operating
10Natural Gas Fired Combined Cycle183 MW163 MW2005Operating
9Natural Gas Fired Combined Cycle183 MW163 MW2005Operating
11Natural Gas Fired Combustion Turbine108 MW99 MW2013Operating
12Natural Gas Fired Combustion Turbine108 MW99 MW2013Operating
13Natural Gas Fired Combustion Turbine108 MW99 MW2013Operating
14Natural Gas Fired Combustion Turbine108 MW99 MW2013Operating
15Natural Gas Fired Combustion Turbine108 MW99 MW2013Operating
16Natural Gas Fired Combustion Turbine108 MW99 MW2013Operating

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

Diablo CanyonNuclear2,323 MW
Dynegy Moss Landing Power Plant HybridBattery storage1,848 MW
CastaicHydro1,682 MW
Ormond BeachNatural gas1,612 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 1,739 MW solar plant and a 1,739 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