Three Forks Water Power Project
Hydro power plant in Trinity County, California. 1.3 MW of nameplate capacity across 1 generator, operated by Grizzly Mountain Ranch.
Also known as EIA plant 54308
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Key facts
- Capacity
- 1.3 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 1984First generator online
- Operator
- Grizzly Mountain RanchEIA operator ID 54722
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Trinity County, CA40.1998, −123.5231
- EIA plant ID
- 54308EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Three Forks Water Power Project produces
Free · EIA-923Net generation, 2025
Not reported
Not reported MWh, final. 0 of 12 months reported
Capacity factor, 2025
Not reported
2024: 23.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2024
2.6–7.7
GWh a year. Low 2024, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 4,637 | Not reported | 12 of 12 |
| 2002 | 5,559 | Not reported | 12 of 12 |
| 2003 | 7,903 | Not reported | 12 of 12 |
| 2004 | 5,838 | Not reported | 12 of 12 |
| 2005 | 8,240 | Not reported | 12 of 12 |
| 2006 | 7,390 | Not reported | 12 of 12 |
| 2007 | 6,007 | Not reported | 12 of 12 |
| 2008 | 6,217 | Not reported | 12 of 12 |
| 2009 | 5,924 | Not reported | 12 of 12 |
| 2010 | 8,895 | 78.1% | 12 of 12 |
| 2011 | 7,843 | 68.9% | 12 of 12 |
| 2012 | 6,622 | 58.0% | 12 of 12 |
| 2013 | 4,181 | 36.7% | 12 of 12 |
| 2014 | 4,996 | 43.9% | 12 of 12 |
| 2015 | 4,223 | 37.1% | 12 of 12 |
| 2016 | 7,702 | 67.4% | 12 of 12 |
| 2017 | 6,837 | 60.0% | 12 of 12 |
| 2018 | 5,594 | 49.1% | 12 of 12 |
| 2019 | 6,591 | 57.9% | 12 of 12 |
| 2020 | 4,043 | 35.4% | 12 of 12 |
| 2021 | 3,423 | 30.1% | 12 of 12 |
| 2022 | 4,555 | 40.0% | 12 of 12 |
| 2023 | 2,687 | 23.6% | 12 of 12 |
| 2024 | 2,641 | 23.1% | 12 of 12 |
| 2025 | Not reported | Not reported | 0 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 | 1.3 | December 1984 |
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 Grizzly Mountain Ranch 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 Three Forks Water Power Project
Questions about Three Forks Water Power Project
Where is Three Forks Water Power Project?
Three Forks Water Power Project is in Trinity County, California, at 40.1998, −123.5231. It is in the California Independent System Operator balancing area (CISO).
Who operates Three Forks Water Power Project?
EIA-860M for August 2026 lists Grizzly Mountain Ranch as the operator (EIA operator ID 54722). The operator is not always the owner.
When did Three Forks Water Power Project start operating?
Its first generator began operating in December 1984, according to EIA-860M.
Does InfraMap have power prices for Three Forks Water Power Project?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Three Forks Water Power Project, 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