Thomson
Hydro power plant in Carlton County, Minnesota. 72.6 MW of nameplate capacity across 6 generators, operated by ALLETE, Inc..
Also known as Thomson Hydro Station · EIA plant 1901
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 72.6 MWNameplate
- Generators
- 6 operatingEIA-860M, August 2026
- Operating since
- January 1907First generator online
- Operator
- ALLETE, Inc.EIA operator ID 12647
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Carlton County, MN46.6550, −92.3333
- EIA plant ID
- 1901EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Thomson produces
Free · EIA-923Net generation, 2025
198 GWh
198,234 MWh, final
Capacity factor, 2025
31.2%
2024: 45.5%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
184.7–477.9
GWh a year. Low 2021, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 276,061 | Not reported | 12 of 12 |
| 2001 | 261,828 | Not reported | 12 of 12 |
| 2002 | 305,623 | Not reported | 12 of 12 |
| 2003 | 212,673 | Not reported | 12 of 12 |
| 2004 | 232,527 | Not reported | 12 of 12 |
| 2005 | 241,929 | Not reported | 12 of 12 |
| 2006 | 167,274 | Not reported | 12 of 12 |
| 2007 | 236,646 | Not reported | 12 of 12 |
| 2008 | 270,413 | Not reported | 12 of 12 |
| 2009 | 223,602 | Not reported | 12 of 12 |
| 2010 | 197,934 | 31.1% | 12 of 12 |
| 2011 | 212,550 | 33.4% | 12 of 12 |
| 2012 | 131,792 | 20.7% | 12 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | 11,395 | 1.8% | 12 of 12 |
| 2015 | 199,037 | 31.3% | 12 of 12 |
| 2016 | 417,421 | 65.5% | 12 of 12 |
| 2017 | 477,947 | 75.2% | 12 of 12 |
| 2018 | 355,802 | 55.9% | 12 of 12 |
| 2019 | 371,547 | 58.4% | 12 of 12 |
| 2020 | 289,999 | 45.5% | 12 of 12 |
| 2021 | 184,660 | 29.0% | 12 of 12 |
| 2022 | 333,713 | 52.5% | 12 of 12 |
| 2023 | 258,743 | 40.7% | 12 of 12 |
| 2024 | 290,470 | 45.5% | 12 of 12 |
| 2025 | 198,234 | 31.2% | 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 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 |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 13.0 | January 1907 |
| 2 | Conventional Hydroelectric | 13.0 | January 1907 |
| 3 | Conventional Hydroelectric | 13.0 | January 1907 |
| 4 | Conventional Hydroelectric | 10.8 | January 1914 |
| 5 | Conventional Hydroelectric | 10.8 | January 1919 |
| 6 | Conventional Hydroelectric | 12.0 | January 1949 |
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 ALLETE, Inc. as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Thomson and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Thomson
More plants operated by ALLETE, Inc.
Questions about Thomson
How much power does Thomson produce?
Thomson reported 198,234 MWh (198 GWh) of net generation in 2025, a 31.2% capacity factor on 72.6 MW of nameplate capacity.
Where is Thomson?
Thomson is in Carlton County, Minnesota, at 46.6550, −92.3333. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Thomson?
EIA-860M for August 2026 lists ALLETE, Inc. as the operator (EIA operator ID 12647). The operator is not always the owner.
When did Thomson start operating?
Its first generator began operating in January 1907, according to EIA-860M.
Does InfraMap have power prices for Thomson?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Thomson, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page