O'Fallon Renewable Energy Center
Solar power plant in St Charles County, Missouri. 4.5 MW of nameplate capacity across 1 generator, operated by Union Electric Co - (MO).
Also known as EIA plant 61826
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 4.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2014First generator online
- Operator
- Union Electric Co - (MO)EIA operator ID 19436
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- St Charles County, MO38.8266, −90.6781
- EIA plant ID
- 61826EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power O'Fallon Renewable produces
Free · EIA-923Net generation, 2025
600 MWh
600 MWh, final
Capacity factor, 2025
1.5%
2024: 5.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2017 to 2025
0.6–6.2
GWh a year. Low 2025, high 2019
| 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 | 5,943 | 15.1% | 12 of 12 |
| 2018 | 6,148 | 15.6% | 12 of 12 |
| 2019 | 6,151 | 15.6% | 12 of 12 |
| 2020 | 5,913 | 15.0% | 12 of 12 |
| 2021 | 6,088 | 15.4% | 12 of 12 |
| 2022 | 4,190 | 10.6% | 12 of 12 |
| 2023 | 5,253 | 13.3% | 12 of 12 |
| 2024 | 2,283 | 5.8% | 12 of 12 |
| 2025 | 600 | 1.5% | 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 account · MISOEmissions
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 |
|---|---|---|---|
| OREC | Solar Photovoltaic | 4.5 | December 2014 |
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 Union Electric Co - (MO) 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 O'Fallon Renewable
More plants operated by Union Electric Co - (MO)
Questions about O'Fallon Renewable
How much power does O'Fallon Renewable Energy Center produce?
O'Fallon Renewable Energy Center reported 600 MWh (600 MWh) of net generation in 2025, a 1.5% capacity factor on 4.5 MW of nameplate capacity.
Where is O'Fallon Renewable Energy Center?
O'Fallon Renewable Energy Center is in St Charles County, Missouri, at 38.8266, −90.6781. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates O'Fallon Renewable Energy Center?
EIA-860M for August 2026 lists Union Electric Co - (MO) as the operator (EIA operator ID 19436). The operator is not always the owner.
When did O'Fallon Renewable Energy Center start operating?
Its first generator began operating in December 2014, according to EIA-860M.
Does InfraMap have power prices for O'Fallon Renewable Energy Center?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to O'Fallon Renewable Energy Center, 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)
- MISO 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