Ridgetop
Wind power plant in Kern County, California. 46.8 MW of nameplate capacity across 1 generator, operated by Terra-Gen Operating Co-Wind.
Also known as EIA plant 54931
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 46.8 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 1994First generator online
- Operator
- Terra-Gen Operating Co-WindEIA operator ID 2770
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Kern County, CA35.0740, −118.3153
- EIA plant ID
- 54931EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ridgetop produces
Free · EIA-923Net generation, 2025
118 GWh
117,599 MWh, final
Capacity factor, 2025
28.7%
2024: 35.5%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
117.6–152.0
GWh a year. Low 2025, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 42,899 | Not reported | 12 of 12 |
| 2001 | 36,532 | Not reported | 12 of 12 |
| 2002 | 38,985 | Not reported | 12 of 12 |
| 2003 | 39,764 | Not reported | 12 of 12 |
| 2004 | 144,535 | Not reported | 12 of 12 |
| 2005 | 136,903 | Not reported | 12 of 12 |
| 2006 | 142,241 | Not reported | 12 of 12 |
| 2007 | 160,150 | Not reported | 12 of 12 |
| 2008 | 156,178 | Not reported | 12 of 12 |
| 2009 | 143,839 | Not reported | 12 of 12 |
| 2010 | 144,339 | 35.2% | 12 of 12 |
| 2011 | 145,151 | 35.4% | 12 of 12 |
| 2012 | 122,925 | 29.9% | 12 of 12 |
| 2013 | 132,885 | 32.4% | 12 of 12 |
| 2014 | 144,769 | 35.3% | 12 of 12 |
| 2015 | 132,125 | 32.2% | 12 of 12 |
| 2016 | 151,962 | 37.0% | 12 of 12 |
| 2017 | 144,091 | 35.1% | 12 of 12 |
| 2018 | 137,760 | 33.6% | 12 of 12 |
| 2019 | 133,872 | 32.7% | 12 of 12 |
| 2020 | 139,753 | 34.0% | 12 of 12 |
| 2021 | 151,800 | 37.0% | 12 of 12 |
| 2022 | 135,462 | 33.0% | 12 of 12 |
| 2023 | 119,524 | 29.2% | 12 of 12 |
| 2024 | 145,880 | 35.5% | 12 of 12 |
| 2025 | 117,599 | 28.7% | 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 |
|---|---|---|---|
| WGN1 | Onshore Wind Turbine | 46.8 | April 1994 |
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 Terra-Gen Operating Co-Wind 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 Ridgetop
More plants operated by Terra-Gen Operating Co-Wind
Questions about Ridgetop
How much power does Ridgetop produce?
Ridgetop reported 117,599 MWh (118 GWh) of net generation in 2025, a 28.7% capacity factor on 46.8 MW of nameplate capacity.
Where is Ridgetop?
Ridgetop is in Kern County, California, at 35.0740, −118.3153. It is in the California Independent System Operator balancing area (CISO).
Who operates Ridgetop?
EIA-860M for August 2026 lists Terra-Gen Operating Co-Wind as the operator (EIA operator ID 2770). The operator is not always the owner.
When did Ridgetop start operating?
Its first generator began operating in April 1994, according to EIA-860M.
Does InfraMap have power prices for Ridgetop?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Ridgetop, 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