Solar Star 1
Solar power plant in Kern County, California. 318 MW of nameplate capacity across 7 generators, operated by Solar Star California XIX, LLC.
Also known as EIA plant 58388
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 318 MWNameplate
- Generators
- 7 operatingEIA-860M, August 2026
- Operating since
- March 2014First generator online
- Operator
- Solar Star California XIX, LLCEIA operator ID 59873
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Kern County, CA34.8181, −118.4036
- EIA plant ID
- 58388EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Solar Star 1 produces
Free · EIA-923Net generation, 2025
897 GWh
897,067 MWh, final
Capacity factor, 2025
32.2%
2024: 31.3%
January to July 2026
558 GWh
Provisional
Range, 2016 to 2025
679.2–926.2
GWh a year. Low 2016, high 2022
| 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 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | 325,345 | Not reported | 10 of 12 |
| 2015 | 821,889 | Not reported | 11 of 12 |
| 2016 | 679,158 | 24.3% | 12 of 12 |
| 2017 | 905,531 | 32.5% | 12 of 12 |
| 2018 | 906,341 | 32.5% | 12 of 12 |
| 2019 | 861,867 | 30.9% | 12 of 12 |
| 2020 | 826,320 | 29.6% | 12 of 12 |
| 2021 | 892,353 | 32.0% | 12 of 12 |
| 2022 | 926,187 | 33.2% | 12 of 12 |
| 2023 | 844,421 | 30.3% | 12 of 12 |
| 2024 | 874,743 | 31.3% | 12 of 12 |
| 2025 | 897,067 | 32.2% | 12 of 12 |
| 2026 (provisional, partial year) | 557,733 | 34.5% | 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 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 |
|---|---|---|---|
| AVS1 | Solar Photovoltaic | 39.0 | March 2014 |
| SS11 | Solar Photovoltaic | 54.0 | June 2015 |
| SS12 | Solar Photovoltaic | 54.0 | February 2015 |
| SS13 | Solar Photovoltaic | 58.5 | October 2014 |
| SS14 | Solar Photovoltaic | 33.0 | June 2015 |
| SS15 | Solar Photovoltaic | 15.0 | October 2014 |
| SS16 | Solar Photovoltaic | 64.5 | April 2014 |
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 Solar Star California XIX, 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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Questions about Solar Star 1
How much power does Solar Star 1 produce?
Solar Star 1 reported 897,067 MWh (897 GWh) of net generation in 2025, a 32.2% capacity factor on 318 MW of nameplate capacity. From January to July 2026 it reported 558 GWh, which is provisional.
Where is Solar Star 1?
Solar Star 1 is in Kern County, California, at 34.8181, −118.4036. It is in the California Independent System Operator balancing area (CISO).
Who operates Solar Star 1?
EIA-860M for August 2026 lists Solar Star California XIX, LLC as the operator (EIA operator ID 59873). The operator is not always the owner.
When did Solar Star 1 start operating?
Its first generator began operating in March 2014, according to EIA-860M.
Does InfraMap have power prices for Solar Star 1?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Solar Star 1, 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