AES Alamitos LLC
AES Alamitos LLC is a natural gas plant in Los Angeles County, California, operated by AES Alamitos LLC. The operator has reported planned retirement dates for 1,115 MW of it, in 2026. Retired units here add up to 940 MW across 4 units, taken out of service between 2003 and 2019.
Nameplate capacity, 2025
1,115 MW
1,142 MW net summer capacity
3 operable units
- Gas steam turbine1,115 MW100%
Unit by unit, 1956 to 2025
operating in 2025retiredreported planned retirementbar height follows unit size
Unit 1 Gas steam turbine, 156 MW, 1956–2019
Unit 2 Gas steam turbine, 156 MW, 1957–2019
Unit 3 Gas steam turbine, 310 MW, 1961
Unit 4 Gas steam turbine, 310 MW, 1962
Unit 5 Gas steam turbine, 495 MW, 1964
Unit 6 Gas steam turbine, 495 MW, 1966–2019
Unit 7 Gas combustion turbine, 133 MW, 1969–2003
Among California’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Diablo Canyon2,323 MW
- 2Dynegy Moss Landing Power Plant Hybrid1,848 MW
- 3Haynes1,739 MW
- 6Geysers Unit 5-201,236 MW
- 7La Paloma Generating Plant1,156 MW
- 8AES Alamitos LLCthis plant
- 9Helms Pumped Storage1,053 MW
- 10Mountainview Generating Station1,037 MW
Other rankings
- All US power plants
- 260th of 14,286
- Power plants in California
- 8th of 1,870
- US natural gas plants
- 121st of 1,961
- Natural gas plants in California
- 5th of 303
- Plants in the California ISO balancing area
- 6th of 1,637
- Biggest single unit, among California’s plants
- 4th of 1,870
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Gas steam turbine | 310 MW | 327 MW | 1961 | Operating, retirement planned for 2026 |
| 4 | Gas steam turbine | 310 MW | 335 MW | 1962 | Operating, retirement planned for 2026 |
| 5 | Gas steam turbine | 495 MW | 480 MW | 1964 | Operating, retirement planned for 2026 |
Retired units
| Unit | Technology | Nameplate | In service |
|---|---|---|---|
| 7 | Gas combustion turbine | 133 MW | 1969–2003 |
| 1 | Gas steam turbine | 156 MW | 1956–2019 |
| 2 | Gas steam turbine | 156 MW | 1957–2019 |
| 6 | Gas steam turbine | 495 MW | 1966–2019 |
Grid and site
- Balancing area
- California ISO
- Reliability region
- Western Electricity Coordinating Council
- Highest grid connection voltage
- 220 kV
- Water source
- Los Cerritos Channel
- Nearest town on record
- Long Beach
- Operator type
- Independent producer
- Coordinates
- 33.769°N, 118.101°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| AES ES Alamitos 2 LLC | Battery storage | 82 MW | 0.1 mi northeast |
| AES Alamitos Energy Center | Natural gas | 678 MW | 0.1 mi south |
| AES ES Alamitos, LLC | Battery storage | 100 MW | 0.1 mi northeast |
| Haynes | Natural gas | 1,739 MW | 0.3 mi south |
| CSU Long Beach | Battery storage | 2.5 MW | 1.1 mi north |
| CSU Long Beach Lots 7 & 14 | Solar | 4.5 MW | 1.1 mi northwest |
| BCE Los Alamitos 1 | Battery storage | 20 MW | 2.6 mi northeast |
| BCE Los Alamitos 2 | Battery storage | 20 MW | 3.1 mi east |