Big Falls
Hydro power plant in Rusk County, Wisconsin. 7.7 MW of nameplate capacity across 3 generators, operated by Northern States Power Co - Minnesota.
Also known as EIA plant 3983
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 7.7 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- January 1922First generator online
- Operator
- Northern States Power Co - MinnesotaEIA operator ID 13781
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Rusk County, WI45.4917, −91.0469
- EIA plant ID
- 3983EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Big Falls produces
Free · EIA-923Net generation, 2025
27.3 GWh
27,321 MWh, final
Capacity factor, 2025
40.5%
2024: 53.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
20.4–52.7
GWh a year. Low 2022, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 32,863 | Not reported | 12 of 12 |
| 2001 | 36,585 | Not reported | 12 of 12 |
| 2002 | 39,930 | Not reported | 12 of 12 |
| 2003 | 30,189 | Not reported | 12 of 12 |
| 2004 | 32,009 | Not reported | 12 of 12 |
| 2005 | 29,981 | Not reported | 12 of 12 |
| 2006 | 26,853 | Not reported | 12 of 12 |
| 2007 | 23,188 | Not reported | 12 of 12 |
| 2008 | 25,997 | Not reported | 12 of 12 |
| 2009 | 20,571 | Not reported | 12 of 12 |
| 2010 | 33,575 | 49.8% | 12 of 12 |
| 2011 | 25,648 | 38.0% | 12 of 12 |
| 2012 | 23,883 | 35.3% | 12 of 12 |
| 2013 | 31,882 | Not reported | 12 of 12 |
| 2014 | 47,502 | 70.4% | 12 of 12 |
| 2015 | 44,633 | 66.2% | 12 of 12 |
| 2016 | 52,712 | 77.9% | 12 of 12 |
| 2017 | 51,830 | 76.8% | 12 of 12 |
| 2018 | 43,423 | 64.4% | 12 of 12 |
| 2019 | 32,788 | 48.6% | 12 of 12 |
| 2020 | 43,337 | 64.1% | 12 of 12 |
| 2021 | 37,092 | 55.0% | 12 of 12 |
| 2022 | 20,430 | 30.3% | 12 of 12 |
| 2023 | 32,753 | 48.6% | 12 of 12 |
| 2024 | 36,115 | 53.4% | 12 of 12 |
| 2025 | 27,321 | 40.5% | 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 |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 2.6 | January 1922 |
| 2 | Conventional Hydroelectric | 2.6 | January 1922 |
| 3 | Conventional Hydroelectric | 2.5 | September 1993 |
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 Northern States Power Co - Minnesota as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Big Falls
More plants operated by Northern States Power Co - Minnesota
Questions about Big Falls
How much power does Big Falls produce?
Big Falls reported 27,321 MWh (27.3 GWh) of net generation in 2025, a 40.5% capacity factor on 7.7 MW of nameplate capacity.
Where is Big Falls?
Big Falls is in Rusk County, Wisconsin, at 45.4917, −91.0469. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Big Falls?
EIA-860M for August 2026 lists Northern States Power Co - Minnesota as the operator (EIA operator ID 13781). The operator is not always the owner.
When did Big Falls start operating?
Its first generator began operating in January 1922, according to EIA-860M.
Does InfraMap have power prices for Big Falls?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Big Falls, 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