Fort Rock IV
Solar power plant in Lake County, Oregon. 10 MW of nameplate capacity across 1 generator, operated by Fort Rock Solar IV LLC.
Also known as EIA plant 63926
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 10 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- June 2020First generator online
- Operator
- Fort Rock Solar IV LLCEIA operator ID 63593
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Lake County, OR43.3899, −120.9561
- EIA plant ID
- 63926EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Fort Rock IV produces
Free · EIA-923Net generation, 2025
24.1 GWh
24,081 MWh, final
Capacity factor, 2025
27.5%
2024: 27.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2021 to 2025
20.5–24.7
GWh a year. Low 2022, high 2021
| 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 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | 14,011 | Not reported | 7 of 12 |
| 2021 | 24,710 | 28.2% | 12 of 12 |
| 2022 | 20,450 | 23.3% | 12 of 12 |
| 2023 | 22,681 | 25.9% | 12 of 12 |
| 2024 | 24,031 | 27.4% | 12 of 12 |
| 2025 | 24,081 | 27.5% | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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 |
|---|---|---|---|
| FRIV | Solar Photovoltaic | 10.0 | June 2020 |
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 Fort Rock Solar IV 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 Fort Rock IV
How much power does Fort Rock IV produce?
Fort Rock IV reported 24,081 MWh (24.1 GWh) of net generation in 2025, a 27.5% capacity factor on 10 MW of nameplate capacity.
Where is Fort Rock IV?
Fort Rock IV is in Lake County, Oregon, at 43.3899, −120.9561. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Fort Rock IV?
EIA-860M for August 2026 lists Fort Rock Solar IV LLC as the operator (EIA operator ID 63593). The operator is not always the owner.
When did Fort Rock IV start operating?
Its first generator began operating in June 2020, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page