GridPlants

Haynes

Natural gasCaliforniaFirst unit online 1962

Haynes is a natural gas plant in Los Angeles County, California, operated by Los Angeles Department of Water & Power. It ranks third by nameplate capacity among California’s 1,870 power plants. Within the LA Department of Water and Power balancing area it is the largest of 95 plants. Retired units here add up to 1,146 MW across 4 units, taken out of service between 2003 and 2013. Two units here can switch between natural gas and oil.

Nameplate capacity, 2025

1,739 MW

1,599 MW net summer capacity

11 operable units

  • Gas combustion turbine649 MW37%
  • Gas combined cycle630 MW36%
  • Gas steam turbine460 MW26%

Unit by unit, 1962 to 2025

operating in 2025retiredbar height follows unit size

Unit 1 Gas steam turbine, 230 MW, 1962
Unit 2 Gas steam turbine, 230 MW, 1963
Unit 3 Gas steam turbine, 230 MW, 1964–2004
Unit 4 Gas steam turbine, 230 MW, 1965–2003
Unit 5 Gas steam turbine, 343 MW, 1966–2013
Unit 6 Gas steam turbine, 343 MW, 1967–2013
Unit 10 Gas combined cycle, 183 MW, 2005
Unit 8 Gas combined cycle, 264 MW, 2005
Unit 9 Gas combined cycle, 183 MW, 2005
Unit 11 Gas combustion turbine, 108 MW, 2013
Unit 12 Gas combustion turbine, 108 MW, 2013
Unit 13 Gas combustion turbine, 108 MW, 2013
Unit 14 Gas combustion turbine, 108 MW, 2013
Unit 15 Gas combustion turbine, 108 MW, 2013
Unit 16 Gas combustion turbine, 108 MW, 2013

Among California’s plants

Largest plants in the state by nameplate capacity, with the plants ranked next to this one.

  1. 1Diablo Canyon2,323 MW
  2. 2Dynegy Moss Landing Power Plant Hybrid1,848 MW
  3. 3Haynesthis plant
  4. 4Castaic1,682 MW
  5. 5Ormond Beach1,612 MW

All power plants in California

Other rankings

All US power plants
107th of 14,286
US natural gas plants
34th of 1,961
Natural gas plants in California
2nd of 303
Plants run by Los Angeles Department of Water & Power
1st of 28
Biggest single unit, among California’s plants
23rd of 1,870

Operable units

UnitTechnologyNameplateSummerOnlineStatus
1Gas steam turbine230 MW222 MW1962Operating
2Gas steam turbine230 MW222 MW1963Operating
10Gas combined cycle183 MW162 MW2005Operating
8Gas combined cycle264 MW235 MW2005Operating
9Gas combined cycle183 MW162 MW2005Operating
11Gas combustion turbine108 MW99.2 MW2013Operating
12Gas combustion turbine108 MW99.2 MW2013Operating
13Gas combustion turbine108 MW99.2 MW2013Operating
14Gas combustion turbine108 MW99.2 MW2013Operating
15Gas combustion turbine108 MW99.2 MW2013Operating
16Gas combustion turbine108 MW99.2 MW2013Operating

Retired units

UnitTechnologyNameplateIn service
4Gas steam turbine230 MW1965–2003
3Gas steam turbine230 MW1964–2004
5Gas steam turbine343 MW1966–2013
6Gas steam turbine343 MW1967–2013

Grid and site

Reliability region
Western Electricity Coordinating Council
Highest grid connection voltage
230 kV
Water source
Pacific Ocean
Nearest town on record
Long Beach
Operator type
Utility
Coordinates
33.765°N, 118.099°W

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