Forbestown
Hydro power plant in Butte County, California. 41.9 MW of nameplate capacity across 1 generator, operated by South Feather Water and Power Agency.
Also known as EIA plant 417
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 41.9 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 1963First generator online
- Operator
- South Feather Water and Power AgencyEIA operator ID 14191
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Butte County, CA39.5510, −121.2788
- EIA plant ID
- 417EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Forbestown produces
Free · EIA-923Net generation, 2025
115 GWh
114,901 MWh, final
Capacity factor, 2025
31.3%
2024: 34.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
49.5–160.7
GWh a year. Low 2021, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 188,971 | Not reported | 12 of 12 |
| 2001 | 86,862 | Not reported | 12 of 12 |
| 2002 | 163,084 | Not reported | 12 of 12 |
| 2003 | 209,426 | Not reported | 12 of 12 |
| 2004 | 175,952 | Not reported | 12 of 12 |
| 2005 | 175,559 | Not reported | 12 of 12 |
| 2006 | 166,967 | Not reported | 12 of 12 |
| 2007 | 91,971 | Not reported | 12 of 12 |
| 2008 | 101,214 | Not reported | 12 of 12 |
| 2009 | 134,298 | Not reported | 12 of 12 |
| 2010 | 174,683 | 47.6% | 12 of 12 |
| 2011 | 152,876 | 41.7% | 12 of 12 |
| 2012 | 129,534 | 35.2% | 12 of 12 |
| 2013 | 86,279 | 23.5% | 12 of 12 |
| 2014 | 58,149 | 15.8% | 12 of 12 |
| 2015 | 70,138 | 19.1% | 12 of 12 |
| 2016 | 128,938 | 35.0% | 12 of 12 |
| 2017 | 160,691 | 43.8% | 12 of 12 |
| 2018 | 84,275 | 23.0% | 12 of 12 |
| 2019 | 157,783 | 43.0% | 12 of 12 |
| 2020 | 51,550 | 14.0% | 12 of 12 |
| 2021 | 49,467 | 13.5% | 12 of 12 |
| 2022 | 95,468 | 26.0% | 12 of 12 |
| 2023 | 155,030 | 42.2% | 12 of 12 |
| 2024 | 128,541 | 34.9% | 12 of 12 |
| 2025 | 114,901 | 31.3% | 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 |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 41.9 | October 1963 |
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 South Feather Water and Power Agency 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 Forbestown
More plants operated by South Feather Water and Power Agency
Questions about Forbestown
How much power does Forbestown produce?
Forbestown reported 114,901 MWh (115 GWh) of net generation in 2025, a 31.3% capacity factor on 41.9 MW of nameplate capacity.
Where is Forbestown?
Forbestown is in Butte County, California, at 39.5510, −121.2788. It is in the California Independent System Operator balancing area (CISO).
Who operates Forbestown?
EIA-860M for August 2026 lists South Feather Water and Power Agency as the operator (EIA operator ID 14191). The operator is not always the owner.
When did Forbestown start operating?
Its first generator began operating in October 1963, according to EIA-860M.
Does InfraMap have power prices for Forbestown?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Forbestown, 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