Castaic
Pumped storage power plant in Los Angeles County, California. 1,682 MW of nameplate capacity across 7 generators, operated by Los Angeles Department of Water & Power.
Also known as Castaic Power Plant · EIA plant 392
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1,682 MWPumped storage 1,626.0 · Hydro 56.0
- Generators
- 7 operatingEIA-860M, August 2026
- Operating since
- January 1972First generator online
- Operator
- Los Angeles Department of Water & PowerEIA operator ID 11208
- Grid
- LDWPBalancing authority LDWP
- Price nodes
- None linkedNo verified ISO node
- Location
- Los Angeles County, CA34.5872, −118.6566
- EIA plant ID
- 392EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Castaic produces
Free · EIA-923Net generation, 2025
159 GWh
158,926 MWh, final
Capacity factor, 2025
Not reported
2024: Not reported
January to July 2026
125 GWh
Provisional
Range, 2015 to 2025
93.3–378.9
GWh a year. Low 2024, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 130,302 | Not reported | 12 of 12 |
| 2001 | −49,012 | Not reported | 12 of 12 |
| 2002 | 342,382 | Not reported | 12 of 12 |
| 2003 | 314,840 | Not reported | 12 of 12 |
| 2004 | 458,029 | Not reported | 12 of 12 |
| 2005 | 295,809 | Not reported | 12 of 12 |
| 2006 | 368,476 | Not reported | 12 of 12 |
| 2007 | 585,127 | Not reported | 12 of 12 |
| 2008 | 410,744 | Not reported | 12 of 12 |
| 2009 | 465,360 | Not reported | 12 of 12 |
| 2010 | 241,544 | Not reported | 12 of 12 |
| 2011 | 184,108 | Not reported | 12 of 12 |
| 2012 | 452,887 | Not reported | 12 of 12 |
| 2013 | 463,971 | Not reported | 12 of 12 |
| 2014 | 141,609 | Not reported | 11 of 12 |
| 2015 | 334,078 | Not reported | 12 of 12 |
| 2016 | 378,922 | Not reported | 12 of 12 |
| 2017 | 356,720 | Not reported | 12 of 12 |
| 2018 | 232,402 | Not reported | 12 of 12 |
| 2019 | 193,141 | Not reported | 12 of 12 |
| 2020 | 274,273 | Not reported | 12 of 12 |
| 2021 | 118,774 | Not reported | 12 of 12 |
| 2022 | 139,365 | Not reported | 12 of 12 |
| 2023 | 136,341 | Not reported | 12 of 12 |
| 2024 | 93,298 | Not reported | 12 of 12 |
| 2025 | 158,926 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | 125,232 | Not reported | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | 271.0 | September 1973 |
| 2 | Hydroelectric Pumped Storage | 271.0 | July 1974 |
| 3 | Hydroelectric Pumped Storage | 271.0 | July 1976 |
| 4 | Hydroelectric Pumped Storage | 271.0 | June 1977 |
| 5 | Hydroelectric Pumped Storage | 271.0 | December 1977 |
| 6 | Hydroelectric Pumped Storage | 271.0 | August 1978 |
| 7 | Conventional Hydroelectric | 56.0 | January 1972 |
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 Los Angeles Department of Water & Power as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Castaic
More plants operated by Los Angeles Department of Water & Power
Questions about Castaic
How much power does Castaic produce?
Castaic reported 158,926 MWh (159 GWh) of net generation in 2025. From January to July 2026 it reported 125 GWh, which is provisional.
Where is Castaic?
Castaic is in Los Angeles County, California, at 34.5872, −118.6566. It is in the Los Angeles Department of Water and Power balancing area (LDWP).
Who operates Castaic?
EIA-860M for August 2026 lists Los Angeles Department of Water & Power as the operator (EIA operator ID 11208). The operator is not always the owner.
When did Castaic start operating?
Its first generator began operating in January 1972, according to EIA-860M.
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)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page