Wolfskill Energy Center
Natural gas power plant in Solano County, California. 48 MW of nameplate capacity across 1 generator, operated by Gilroy Energy Center LLC.
Also known as EIA plant 55855
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 48 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- January 2003First generator online
- Operator
- Gilroy Energy Center LLCEIA operator ID 49972
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Solano County, CA38.2285, −122.0753
- EIA plant ID
- 55855EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Wolfskill produces
Free · EIA-923Net generation, 2025
3.93 GWh
3,927 MWh, final
Capacity factor, 2025
0.9%
2024: Not reported
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
3.9–26.3
GWh a year. Low 2025, high 2015
| 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 | 16,142 | Not reported | 12 of 12 |
| 2004 | 21,107 | Not reported | 12 of 12 |
| 2005 | 15,757 | Not reported | 12 of 12 |
| 2006 | 16,798 | Not reported | 12 of 12 |
| 2007 | 20,517 | Not reported | 12 of 12 |
| 2008 | 25,855 | Not reported | 12 of 12 |
| 2009 | 19,186 | Not reported | 12 of 12 |
| 2010 | 7,636 | 1.9% | 12 of 12 |
| 2011 | 9,869 | 2.4% | 12 of 12 |
| 2012 | 16,549 | 4.0% | 12 of 12 |
| 2013 | 19,023 | 4.6% | 12 of 12 |
| 2014 | 18,102 | 4.4% | 12 of 12 |
| 2015 | 26,284 | 6.4% | 12 of 12 |
| 2016 | 16,450 | 4.0% | 12 of 12 |
| 2017 | 15,432 | 3.7% | 12 of 12 |
| 2018 | 9,388 | 2.3% | 12 of 12 |
| 2019 | 7,008 | 1.7% | 12 of 12 |
| 2020 | 8,863 | 2.1% | 12 of 12 |
| 2021 | 9,426 | 2.3% | 12 of 12 |
| 2022 | 9,245 | 2.2% | 12 of 12 |
| 2023 | 7,956 | 1.9% | 12 of 12 |
| 2024 | 7,416 | Not reported | 12 of 12 |
| 2025 | 3,927 | 0.9% | 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 CAMPDCO₂, 2025
2,543
US short tons. 2024: 4,900
SO₂, 2025
0
US short tons
NOx, 2025
0
US short tons
CO₂ per MWh, calculated
0.65 t
About 1,295 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (UNIT1), matched to EIA plant 55855 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, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | 48.0 | January 2003 |
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 Gilroy Energy Center 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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Power plants near Wolfskill
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Questions about Wolfskill
How much power does Wolfskill Energy Center produce?
Wolfskill Energy Center reported 3,927 MWh (3.93 GWh) of net generation in 2025, a 0.9% capacity factor on 48 MW of nameplate capacity.
Where is Wolfskill Energy Center?
Wolfskill Energy Center is in Solano County, California, at 38.2285, −122.0753. It is in the California Independent System Operator balancing area (CISO).
Who operates Wolfskill Energy Center?
EIA-860M for August 2026 lists Gilroy Energy Center LLC as the operator (EIA operator ID 49972). The operator is not always the owner.
When did Wolfskill Energy Center start operating?
Its first generator began operating in January 2003, according to EIA-860M.
Does InfraMap have power prices for Wolfskill Energy Center?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Wolfskill Energy Center, 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
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page