St. Charles Power Plant
Oil power plant in Winona County, Minnesota. 8.8 MW of nameplate capacity across 4 generators, operated by City of St Charles - (MN).
Also known as EIA plant 56100
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Key facts
- Capacity
- 8.8 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- December 2004First generator online
- Operator
- City of St Charles - (MN)EIA operator ID 17862
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Winona County, MN43.9742, −92.0597
- EIA plant ID
- 56100EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power St. Charles produces
Free · EIA-923Net generation, 2025
75 MWh
75 MWh, final
Capacity factor, 2025
0.1%
2024: 0.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
40.0–102.0
MWh a year. Low 2015, high 2016
| 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 | 233 | Not reported | 12 of 12 |
| 2006 | 227 | Not reported | 12 of 12 |
| 2007 | 434 | Not reported | 12 of 12 |
| 2008 | 166 | Not reported | 12 of 12 |
| 2009 | 46 | Not reported | 12 of 12 |
| 2010 | 61 | 0.1% | 12 of 12 |
| 2011 | 44 | 0.1% | 12 of 12 |
| 2012 | 80 | 0.1% | 12 of 12 |
| 2013 | 42 | 0.1% | 12 of 12 |
| 2014 | 46 | 0.1% | 12 of 12 |
| 2015 | 40 | 0.1% | 12 of 12 |
| 2016 | 102 | 0.1% | 12 of 12 |
| 2017 | 48 | 0.1% | 12 of 12 |
| 2018 | 81 | 0.1% | 12 of 12 |
| 2019 | 49 | 0.1% | 12 of 12 |
| 2020 | 68 | 0.1% | 12 of 12 |
| 2021 | 101 | 0.1% | 12 of 12 |
| 2022 | 75 | 0.1% | 12 of 12 |
| 2023 | 82 | 0.1% | 12 of 12 |
| 2024 | 71 | 0.1% | 12 of 12 |
| 2025 | 75 | 0.1% | 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Petroleum Liquids | 2.2 | December 2004 |
| 2 | Petroleum Liquids | 2.2 | December 2004 |
| 3 | Petroleum Liquids | 2.2 | December 2004 |
| 4 | Petroleum Liquids | 2.2 | December 2004 |
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 City of St Charles - (MN) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about St. Charles
How much power does St. Charles Power Plant produce?
St. Charles Power Plant reported 75 MWh (75 MWh) of net generation in 2025, a 0.1% capacity factor on 8.8 MW of nameplate capacity.
Where is St. Charles Power Plant?
St. Charles Power Plant is in Winona County, Minnesota, at 43.9742, −92.0597. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates St. Charles Power Plant?
EIA-860M for August 2026 lists City of St Charles - (MN) as the operator (EIA operator ID 17862). The operator is not always the owner.
When did St. Charles Power Plant start operating?
Its first generator began operating in December 2004, 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