Temescal
Hydro power plant in Riverside County, California. 2.9 MW of nameplate capacity across 1 generator, operated by Metropolitan Water District of S CA.
Also known as EIA plant 479
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2.9 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- July 1983First generator online
- Operator
- Metropolitan Water District of S CAEIA operator ID 12397
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Riverside County, CA33.8343, −117.4971
- EIA plant ID
- 479EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Temescal produces
Free · EIA-923Net generation, 2025
1.88 GWh
1,882 MWh, final
Capacity factor, 2025
7.4%
2024: 65.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
1.2–21.0
GWh a year. Low 2017, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 17,379 | Not reported | 12 of 12 |
| 2002 | 16,227 | Not reported | 12 of 12 |
| 2003 | 8,870 | Not reported | 12 of 12 |
| 2004 | 11,427 | Not reported | 12 of 12 |
| 2005 | 13,798 | Not reported | 12 of 12 |
| 2006 | 6,969 | Not reported | 12 of 12 |
| 2007 | 10,535 | Not reported | 12 of 12 |
| 2008 | 16,451 | Not reported | 12 of 12 |
| 2009 | 18,372 | Not reported | 12 of 12 |
| 2010 | 19,519 | 76.8% | 12 of 12 |
| 2011 | 13,699 | 53.9% | 12 of 12 |
| 2012 | 17,151 | 67.3% | 12 of 12 |
| 2013 | 17,713 | 69.7% | 12 of 12 |
| 2014 | 16,144 | 63.5% | 12 of 12 |
| 2015 | 20,973 | 82.6% | 12 of 12 |
| 2016 | 16,278 | 63.9% | 12 of 12 |
| 2017 | 1,154 | 4.5% | 12 of 12 |
| 2018 | 4,998 | 19.7% | 12 of 12 |
| 2019 | 1,691 | 6.7% | 12 of 12 |
| 2020 | 8,408 | 33.0% | 12 of 12 |
| 2021 | 9,949 | 39.2% | 12 of 12 |
| 2022 | 8,172 | 32.2% | 12 of 12 |
| 2023 | 7,087 | 27.9% | 12 of 12 |
| 2024 | 16,799 | 65.9% | 12 of 12 |
| 2025 | 1,882 | 7.4% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 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 | Conventional Hydroelectric | 2.9 | July 1983 |
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 Metropolitan Water District of S CA 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 Temescal
More plants operated by Metropolitan Water District of S CA
Questions about Temescal
How much power does Temescal produce?
Temescal reported 1,882 MWh (1.88 GWh) of net generation in 2025, a 7.4% capacity factor on 2.9 MW of nameplate capacity.
Where is Temescal?
Temescal is in Riverside County, California, at 33.8343, −117.4971. It is in the California Independent System Operator balancing area (CISO).
Who operates Temescal?
EIA-860M for August 2026 lists Metropolitan Water District of S CA as the operator (EIA operator ID 12397). The operator is not always the owner.
When did Temescal start operating?
Its first generator began operating in July 1983, according to EIA-860M.
Does InfraMap have power prices for Temescal?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Temescal, 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)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page