California Valley Solar Ranch
Solar power plant in San Luis Obispo County, California. 249.8 MW of nameplate capacity across 5 generators, operated by Clearway Energy Operating LLC.
Also known as EIA plant 57439
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 249.8 MWNameplate
- Generators
- 5 operatingEIA-860M, August 2026
- Operating since
- September 2012First generator online
- Operator
- Clearway Energy Operating LLCEIA operator ID 64536
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 2 CAISO nodesResource nodes with prices
- Location
- San Luis Obispo County, CA35.3237, −119.9166
- EIA plant ID
- 57439EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power California Valley Solar Ranch produces
Free · EIA-923Net generation, 2025
559 GWh
558,684 MWh, final
Capacity factor, 2025
25.5%
2024: 27.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
476.4–690.6
GWh a year. Low 2022, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | 21,727 | Not reported | 4 of 12 |
| 2013 | 399,364 | Not reported | 12 of 12 |
| 2014 | 684,403 | 31.3% | 12 of 12 |
| 2015 | 688,253 | 31.5% | 12 of 12 |
| 2016 | 679,796 | 31.0% | 12 of 12 |
| 2017 | 647,541 | 29.6% | 12 of 12 |
| 2018 | 676,633 | 30.9% | 12 of 12 |
| 2019 | 584,795 | 26.7% | 12 of 12 |
| 2020 | 643,559 | 29.3% | 12 of 12 |
| 2021 | 690,646 | 31.6% | 12 of 12 |
| 2022 | 476,358 | 21.8% | 12 of 12 |
| 2023 | 623,763 | 28.5% | 12 of 12 |
| 2024 | 597,676 | 27.2% | 12 of 12 |
| 2025 | 558,684 | 25.5% | 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 |
|---|---|---|---|
| HPR2 | Solar Photovoltaic | 32.3 | October 2013 |
| HPR2A | Solar Photovoltaic | 21.0 | September 2012 |
| HPR2B | Solar Photovoltaic | 86.5 | January 2013 |
| HPR2C | Solar Photovoltaic | 70.0 | October 2013 |
| HPR2D | Solar Photovoltaic | 40.0 | January 2013 |
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 Clearway Energy Operating LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near California Valley Solar Ranch
More plants operated by Clearway Energy Operating LLC
Questions about California Valley Solar Ranch
How much power does California Valley Solar Ranch produce?
California Valley Solar Ranch reported 558,684 MWh (559 GWh) of net generation in 2025, a 25.5% capacity factor on 249.8 MW of nameplate capacity.
Where is California Valley Solar Ranch?
California Valley Solar Ranch is in San Luis Obispo County, California, at 35.3237, −119.9166. It is in the California Independent System Operator balancing area (CISO).
Who operates California Valley Solar Ranch?
EIA-860M for August 2026 lists Clearway Energy Operating LLC as the operator (EIA operator ID 64536). The operator is not always the owner.
When did California Valley Solar Ranch start operating?
Its first generator began operating in September 2012, according to EIA-860M.
Does InfraMap have power prices for California Valley Solar Ranch?
Yes. InfraMap has CAISO day-ahead and real-time prices at 2 price nodes linked to California Valley Solar Ranch, 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