Washington County Solar
Solar power plant in Washington County, Georgia. 150 MW of nameplate capacity across 1 generator, operated by Washington County Solar, LLC.
Also known as EIA plant 66990
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 150 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- September 2024First generator online
- Operator
- Washington County Solar, LLCEIA operator ID 65875
- Grid
- SOCOBalancing authority SOCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Washington County, GA32.9899, −82.7138
- EIA plant ID
- 66990EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Washington County Solar produces
Free · EIA-923Net generation, 2025
312 GWh
312,217 MWh, final
Capacity factor, 2025
23.8%
2024: Not reported
January to July 2026
215 GWh
Provisional
| 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 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | 85,103 | Not reported | 4 of 12 |
| 2025 | 312,217 | 23.8% | 12 of 12 |
| 2026 (provisional, partial year) | 215,072 | 28.2% | 7 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 |
|---|---|---|---|
| WASH | Solar Photovoltaic | 150.0 | September 2024 |
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 Washington County Solar, 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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Power plants near Washington County Solar
More plants operated by Washington County Solar, LLC
Questions about Washington County Solar
How much power does Washington County Solar produce?
Washington County Solar reported 312,217 MWh (312 GWh) of net generation in 2025, a 23.8% capacity factor on 150 MW of nameplate capacity. From January to July 2026 it reported 215 GWh, which is provisional.
Where is Washington County Solar?
Washington County Solar is in Washington County, Georgia, at 32.9899, −82.7138. It is in the Southern Company Services, Inc. - Trans balancing area (SOCO).
Who operates Washington County Solar?
EIA-860M for August 2026 lists Washington County Solar, LLC as the operator (EIA operator ID 65875). The operator is not always the owner.
When did Washington County Solar start operating?
Its first generator began operating in September 2024, 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