A.J. Mihm Generating Station
Natural gas power plant in Baraga County, Michigan. 56.4 MW of nameplate capacity across 3 generators, operated by Upper Michigan Energy Resources Company.
Also known as EIA plant 61391
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 56.4 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- March 2019First generator online
- Operator
- Upper Michigan Energy Resources CompanyEIA operator ID 61029
- Grid
- MISOBalancing authority MISO
- Price nodes
- 3 MISO nodesResource nodes with prices
- Location
- Baraga County, MI46.7927, −88.6140
- EIA plant ID
- 61391EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power A.J. Mihm produces
Free · EIA-923Net generation, 2025
185 GWh
184,546 MWh, final
Capacity factor, 2025
37.4%
2024: 34.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2020 to 2025
170.3–246.0
GWh a year. Low 2024, high 2020
| 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 | 187,627 | Not reported | 10 of 12 |
| 2020 | 246,033 | 49.7% | 12 of 12 |
| 2021 | 237,478 | 48.1% | 12 of 12 |
| 2022 | 222,006 | 44.9% | 12 of 12 |
| 2023 | 207,891 | 42.1% | 12 of 12 |
| 2024 | 170,304 | 34.4% | 12 of 12 |
| 2025 | 184,546 | 37.4% | 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| M1 | Natural Gas Internal Combustion Engine | 18.8 | March 2019 |
| M2 | Natural Gas Internal Combustion Engine | 18.8 | March 2019 |
| M3 | Natural Gas Internal Combustion Engine | 18.8 | March 2019 |
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 Upper Michigan Energy Resources Company 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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Power plants near A.J. Mihm
More plants operated by Upper Michigan Energy Resources Company
Questions about A.J. Mihm
How much power does A.J. Mihm Generating Station produce?
A.J. Mihm Generating Station reported 184,546 MWh (185 GWh) of net generation in 2025, a 37.4% capacity factor on 56.4 MW of nameplate capacity.
Where is A.J. Mihm Generating Station?
A.J. Mihm Generating Station is in Baraga County, Michigan, at 46.7927, −88.6140. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates A.J. Mihm Generating Station?
EIA-860M for August 2026 lists Upper Michigan Energy Resources Company as the operator (EIA operator ID 61029). The operator is not always the owner.
When did A.J. Mihm Generating Station start operating?
Its first generator began operating in March 2019, according to EIA-860M.
Does InfraMap have power prices for A.J. Mihm Generating Station?
Yes. InfraMap has MISO day-ahead and real-time prices at 3 price nodes linked to A.J. Mihm Generating Station, 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