AES Alamitos LLC
Natural gas power plant in Los Angeles County, California. 1,115 MW of nameplate capacity across 3 generators, operated by AES Alamitos LLC.
Also known as EIA plant 315
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Key facts
- Capacity
- 1,115 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- December 1961First generator online
- Operator
- AES Alamitos LLCEIA operator ID 22148
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 3 CAISO nodesResource nodes with prices
- Location
- Los Angeles County, CA33.7688, −118.1009
- EIA plant ID
- 315EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power AES Alamitos produces
Free · EIA-923Net generation, 2025
28.2 GWh
28,213 MWh, final
Capacity factor, 2025
0.3%
2024: 0.3%
January to July 2026
6.02 GWh
Provisional
Range, 2015 to 2025
0.0–1.1
TWh a year. Low 2025, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 6,323,415 | Not reported | 12 of 12 |
| 2001 | 7,901,896 | Not reported | 11 of 12 |
| 2002 | 4,101,417 | Not reported | 12 of 12 |
| 2003 | 3,078,131 | Not reported | 11 of 12 |
| 2004 | 2,954,395 | Not reported | 12 of 12 |
| 2005 | 1,311,102 | Not reported | 12 of 12 |
| 2006 | 1,792,357 | Not reported | 12 of 12 |
| 2007 | 1,476,333 | Not reported | 12 of 12 |
| 2008 | 2,534,359 | Not reported | 12 of 12 |
| 2009 | 1,718,183 | Not reported | 12 of 12 |
| 2010 | 881,390 | 5.2% | 12 of 12 |
| 2011 | 1,025,357 | 6.1% | 12 of 12 |
| 2012 | 1,464,747 | 8.7% | 12 of 12 |
| 2013 | 1,528,931 | 9.1% | 12 of 12 |
| 2014 | 1,369,722 | 8.1% | 12 of 12 |
| 2015 | 1,052,825 | 6.3% | 12 of 12 |
| 2016 | 889,395 | 5.3% | 12 of 12 |
| 2017 | 855,083 | 5.1% | 12 of 12 |
| 2018 | 958,300 | 5.7% | 12 of 12 |
| 2019 | 581,118 | Not reported | 12 of 12 |
| 2020 | 544,278 | 5.6% | 12 of 12 |
| 2021 | 536,845 | 5.5% | 12 of 12 |
| 2022 | 630,475 | 6.5% | 12 of 12 |
| 2023 | 598,254 | 6.1% | 12 of 12 |
| 2024 | 33,985 | 0.3% | 12 of 12 |
| 2025 | 28,213 | 0.3% | 12 of 12 |
| 2026 (provisional, partial year) | 6,024 | 0.1% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · CAISOEmissions
Free · EPA CAMPDCO₂, 2025
26,019
US short tons. 2024: 32,687
SO₂, 2025
0
US short tons
NOx, 2025
4
US short tons
CO₂ per MWh, calculated
0.92 t
About 1,844 lb per MWh
3 of 3 EPA units reported CO₂ in 2025 (1, 2, 3, 4, 5, 6), matched to EIA plant 315 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
18,784
million gallons
Consumption, 2024
0
million gallons
Source
Los Cerritos Channel
Surface, Saline. Once-through
Watershed stress
High · 0.799
USGS SUI, HUC12 Alamitos Bay
36 of 36 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 3 | Natural Gas Steam Turbine | 310.0 | December 1961 |
| 4 | Natural Gas Steam Turbine | 310.0 | June 1962 |
| 5 | Natural Gas Steam Turbine | 495.0 | March 1964 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists AES Alamitos LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about AES Alamitos
How much power does AES Alamitos LLC produce?
AES Alamitos LLC reported 28,213 MWh (28.2 GWh) of net generation in 2025, a 0.3% capacity factor on 1,115 MW of nameplate capacity. From January to July 2026 it reported 6.02 GWh, which is provisional.
Where is AES Alamitos LLC?
AES Alamitos LLC is in Los Angeles County, California, at 33.7688, −118.1009. It is in the California Independent System Operator balancing area (CISO).
Who operates AES Alamitos LLC?
EIA-860M for August 2026 lists AES Alamitos LLC as the operator (EIA operator ID 22148). The operator is not always the owner.
When did AES Alamitos LLC start operating?
Its first generator began operating in December 1961, according to EIA-860M.
Does InfraMap have power prices for AES Alamitos LLC?
Yes. InfraMap has CAISO day-ahead and real-time prices at 3 price nodes linked to AES Alamitos LLC, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page