McDonough Solar 1, LLC CSG
Solar power plant in McDonough County, Illinois. 4 MW of nameplate capacity across 2 generators, operated by McDonough Solar 1, LLC.
Also known as McDonough Solar 1, LLC (CSG) · EIA plant 64201
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 4 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 2020First generator online
- Operator
- McDonough Solar 1, LLCEIA operator ID 63814
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- McDonough County, IL40.5554, −90.8511
- EIA plant ID
- 64201EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power McDonough Solar 1, LLC CSG produces
Free · EIA-923Net generation, 2025
3.91 GWh
3,907 MWh, final
Capacity factor, 2025
11.2%
2024: 10.7%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2021 to 2025
3.8–4.3
GWh a year. Low 2024, high 2023
| 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 | 1 | Not reported | 1 of 12 |
| 2021 | 4,093 | 11.7% | 12 of 12 |
| 2022 | 4,328 | 12.4% | 12 of 12 |
| 2023 | 4,336 | 12.4% | 12 of 12 |
| 2024 | 3,766 | 10.7% | 12 of 12 |
| 2025 | 3,907 | 11.2% | 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 |
|---|---|---|---|
| MC1B | Solar Photovoltaic | 2.0 | December 2020 |
| MCDH | Solar Photovoltaic | 2.0 | December 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 McDonough Solar 1, 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 McDonough Solar 1, LLC CSG
How much power does McDonough Solar 1, LLC CSG produce?
McDonough Solar 1, LLC CSG reported 3,907 MWh (3.91 GWh) of net generation in 2025, a 11.2% capacity factor on 4 MW of nameplate capacity.
Where is McDonough Solar 1, LLC CSG?
McDonough Solar 1, LLC CSG is in McDonough County, Illinois, at 40.5554, −90.8511. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates McDonough Solar 1, LLC CSG?
EIA-860M for August 2026 lists McDonough Solar 1, LLC as the operator (EIA operator ID 63814). The operator is not always the owner.
When did McDonough Solar 1, LLC CSG start operating?
Its first generator began operating in December 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)
- Project names from the USGS U.S. Large-Scale Solar Photovoltaic Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page