Hydroelectric Power Plants in Wisconsin
Every operating hydroelectric power plant in Wisconsin on EIA-860M for 2026-07: 61 plants, 225 generating units and 519 MW of nameplate capacity across 26 counties, most of it inside MISO.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Plants
- 61
- 225 generating units
- Nameplate capacity
- 519 MW
- Counties
- 26
- Grid operator
- MISO
- covers most of these plants
Map of hydroelectric power plants in Wisconsin
Every one of the 61 plants is drawn at the coordinate EIA files for it.
Loading map…
- Hydro · 61
List of hydroelectric power plants in Wisconsin
Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.
| Jim FallsConventional Hydroelectric | Northern States Power Co - Minnesota | Chippewa | 59.8 | 3 | 1988 | Operating |
| WissotaConventional Hydroelectric | Northern States Power Co - Minnesota | Chippewa | 39.4 | 6 | 1917 | Operating |
| CornellConventional Hydroelectric | Northern States Power Co - Minnesota | Chippewa | 35.3 | 4 | 1976 | Operating |
| HolcombeConventional Hydroelectric | Northern States Power Co - Minnesota | Chippewa | 33.9 | 3 | 1950 | Operating |
| Prairie Du SacConventional Hydroelectric | Wisconsin Power & Light Co | Sauk | 33.4 | 8 | 1915 | Operating |
| St Croix FallsConventional Hydroelectric | Northern States Power Co - Minnesota | Polk | 23.2 | 8 | 1910 | Operating |
| Chippewa FallsConventional Hydroelectric | Northern States Power Co - Minnesota | Chippewa | 21.6 | 6 | 1928 | Operating |
| PetenwellConventional Hydroelectric | Wisconsin River Power Company | Juneau | 20 | 4 | 1949 | Operating |
| Flambeau Hydroelectric StationConventional Hydroelectric | Dairyland Power Coop | Rusk | 19.1 | 3 | 1951 | Operating |
| Grandfather FallsConventional Hydroelectric | Wisconsin Public Service Corp | Lincoln | 17.2 | 2 | 1938 | Operating |
| Castle RockConventional Hydroelectric | Wisconsin River Power Company | Adams | 15 | 5 | 1950 | Operating |
| DellsConventional Hydroelectric | Northern States Power Co - Minnesota | Eau Claire | 12.3 | 5 | 1923 | Operating |
| KilbournConventional Hydroelectric | Wisconsin Power & Light Co | Columbia | 9.7 | 4 | 1926 | Operating |
| Twin Falls (WI)Conventional Hydroelectric | Wisconsin Electric Power Co | Florence | 9.2 | 2 | 2016 | Operating |
| Little Quinnesec Falls Hydro ProjectConventional Hydroelectric | Eagle Creek Renewable Energy, LLC | Marinette | 9 | 6 | 1900 | Operating |
| New BadgerConventional Hydroelectric | City of Kaukauna (WI) | Outagamie | 8.2 | 2 | 2014 | Operating |
| Wisconsin RapidsConventional Hydroelectric | Consolidated Water Power Co | Wood | 8.1 | 10 | 1903 | Operating |
| Big FallsConventional Hydroelectric | Northern States Power Co - Minnesota | Rusk | 7.7 | 3 | 1922 | Operating |
| Du BayConventional Hydroelectric | Consolidated Water Power Co | Portage | 7.2 | 4 | 1942 | Operating |
| High Falls (WI)Conventional Hydroelectric | Wisconsin Public Service Corp | Marinette | 7 | 5 | 1910 | Operating |
| Port Edwards MillConventional Hydroelectric | Domtar Industries Inc | Wood | 6.7 | 11 | 1913 | Operating |
| Caldron FallsConventional Hydroelectric | Wisconsin Public Service Corp | Marinette | 6.4 | 2 | 1924 | Operating |
| Combined LocksConventional Hydroelectric | City of Kaukauna (WI) | Outagamie | 6.2 | 2 | 1988 | Operating |
| Cedar Falls (WI)Conventional Hydroelectric | Northern States Power Co - Minnesota | Dunn | 6 | 3 | 1910 | Operating |
| BironConventional Hydroelectric | Consolidated Water Power Co | Wood | 5.8 | 8 | 1896 | Operating |
| MenomonieConventional Hydroelectric | Northern States Power Co - Minnesota | Dunn | 5.4 | 2 | 1958 | Operating |
| WausauConventional Hydroelectric | Wisconsin Public Service Corp | Marathon | 5.4 | 3 | 1921 | Operating |
| BruleConventional Hydroelectric | Wisconsin Electric Power Co | Florence | 5.3 | 3 | 1919 | Operating |
| WhitingConventional Hydroelectric | Consolidated Water Power Co | Portage | 5.1 | 10 | 1891 | Operating |
| Stevens PointConventional Hydroelectric | Consolidated Water Power Co | Portage | 4.8 | 6 | 1918 | Operating |
| Kaukauna City HydroConventional Hydroelectric | City of Kaukauna (WI) | Outagamie | 4.8 | 2 | 1940 | Operating |
| AlexanderConventional Hydroelectric | Wisconsin Public Service Corp | Lincoln | 4.2 | 3 | 1925 | Operating |
| Sandstone RapidsConventional Hydroelectric | Wisconsin Public Service Corp | Marinette | 3.8 | 2 | 1925 | Operating |
| PineConventional Hydroelectric | Wisconsin Electric Power Co | Florence | 3.6 | 2 | 1922 | Operating |
| Ladysmith DamConventional Hydroelectric | Northern States Power Co - Minnesota | Rusk | 3.4 | 3 | 1940 | Operating |
| Johnson FallsConventional Hydroelectric | Wisconsin Public Service Corp | Marinette | 3.4 | 2 | 1923 | Operating |
| LAC Courte Oreilles HydroelectConventional Hydroelectric | Zero6 Energy Hydro | Sawyer | 3.4 | 3 | 1986 | Operating |
| Little ChuteConventional Hydroelectric | City of Kaukauna (WI) | Outagamie | 3.3 | 3 | 1948 | Operating |
| TomahawkConventional Hydroelectric | Wisconsin Public Service Corp | Lincoln | 2.6 | 2 | 1938 | Operating |
| Rapide CrocheConventional Hydroelectric | City of Kaukauna (WI) | Outagamie | 2.4 | 4 | 1926 | Operating |
| Apple RiverConventional Hydroelectric | Northern States Power Co - Minnesota | St Croix | 2.4 | 3 | 1901 | Operating |
| MerrillConventional Hydroelectric | Wisconsin Public Service Corp | Lincoln | 2.3 | 3 | 1917 | Operating |
| AppletonConventional Hydroelectric | Wisconsin Electric Power Co | Outagamie | 2.2 | 3 | 1916 | Operating |
| Park MillConventional Hydroelectric | Eagle Creek Renewable Energy, LLC | Marinette | 2.1 | 6 | 1920 | Operating |
| Kimberly MillConventional Hydroelectric | City of Kaukauna (WI) | Outagamie | 2.1 | 3 | 1926 | Operating |
| Oconto Falls LowerConventional Hydroelectric | Eagle Creek Renewable Energy, LLC | Oconto | 2 | 2 | 1971 | Out of service and NOT expected to return to service in next calendar year |
| Hat RapidsConventional Hydroelectric | Wisconsin Public Service Corp | Oneida | 1.7 | 3 | 1923 | Operating |
| Saxon FallsConventional Hydroelectric | Northern States Power Co - Minnesota | Iron | 1.6 | 2 | 1913 | Operating |
| Flambeau Crowley Rapids ProjectConventional Hydroelectric | Zero6 Energy Hydro | Price | 1.5 | 2 | 1930 | Operating |
| ThornappleConventional Hydroelectric | Northern States Power Co - Minnesota | Rusk | 1.4 | 2 | 1927 | Operating |
| Arpin DamConventional Hydroelectric | Zero6 Energy Hydro | Sawyer | 1.4 | 3 | 1971 | Operating |
| Potato RapidsConventional Hydroelectric | Wisconsin Public Service Corp | Marinette | 1.3 | 3 | 1921 | Operating |
| TregoConventional Hydroelectric | Northern States Power Co - Minnesota | Washburn | 1.2 | 2 | 1927 | Operating |
| Clam River DamConventional Hydroelectric | Zero6 Energy Hydro | Burnett | 1.2 | 3 | 1942 | Operating |
| Flambeau Lower ProjectConventional Hydroelectric | Zero6 Energy Hydro | Price | 1.2 | 3 | 1923 | Operating |
| Oconto Falls UpperConventional Hydroelectric | Eagle Creek Renewable Energy, LLC | Oconto | 1.1 | 3 | 1918 | Operating |
| Domtar Paper Company RothschildConventional Hydroelectric | Domtar Paper Company Rothschild | Marathon | 1.1 | 2 | 1910 | Operating |
| White River (WI)Conventional Hydroelectric | Northern States Power Co - Minnesota | Ashland | 1 | 2 | 1907 | Operating |
| Danbury DamConventional Hydroelectric | Zero6 Energy Hydro | Burnett | 1 | 3 | 1921 | Operating |
| StilesConventional Hydroelectric | Oconto Electric Cooperative | Oconto | 1 | 2 | 1949 | Operating |
| BarronConventional Hydroelectric | City of Barron - (WI) | Barron | 0.1 | 1 | 1923 | Operating |
Largest hydroelectric power plants in Wisconsin
- 1Jim FallsChippewa County, Wisconsin59.8 MW
- 2WissotaChippewa County, Wisconsin39.4 MW
- 3CornellChippewa County, Wisconsin35.3 MW
- 4HolcombeChippewa County, Wisconsin33.9 MW
- 5Prairie Du SacSauk County, Wisconsin33.4 MW
- 6St Croix FallsPolk County, Wisconsin23.2 MW
- 7Chippewa FallsChippewa County, Wisconsin21.6 MW
- 8PetenwellJuneau County, Wisconsin20 MW
- 9Flambeau Hydroelectric StationRusk County, Wisconsin19.1 MW
- 10Grandfather FallsLincoln County, Wisconsin17.2 MW
Hydroelectric power plants by county in Wisconsin
The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.
| County | Plants | Nameplate MW |
|---|---|---|
| Chippewa | 5 | 190 |
| Sauk | 1 | 33.4 |
| Marinette | 7 | 33 |
| Rusk | 4 | 31.6 |
| Outagamie | 7 | 29.2 |
| Lincoln | 4 | 26.3 |
| Polk | 1 | 23.2 |
| Wood | 3 | 20.6 |
| Juneau | 1 | 20 |
| Florence | 3 | 18.1 |
| Portage | 3 | 17.1 |
| Adams | 1 | 15 |
| Eau Claire | 1 | 12.3 |
| Dunn | 2 | 11.4 |
| Columbia | 1 | 9.7 |
| Marathon | 2 | 6.5 |
| Sawyer | 2 | 4.8 |
| Oconto | 3 | 4.1 |
| Price | 2 | 2.7 |
| St Croix | 1 | 2.4 |
| Burnett | 2 | 2.2 |
| Oneida | 1 | 1.7 |
| Iron | 1 | 1.6 |
| Washburn | 1 | 1.2 |
| Ashland | 1 | 1 |
| Barron | 1 | 0.1 |
Hydroelectric Power Plants in Wisconsin: FAQ
- How many hydroelectric power plants are in Wisconsin?
- 61, with 519 MW of nameplate capacity between them, spread over 26 counties. That is the EIA-860M operating count for 2026-07.
- Is there a map of Wisconsin hydroelectric power plants?
- Yes — the map above. Each dot is one hydroelectric power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.
- Which is the largest hydroelectric power plant in Wisconsin?
- Jim Falls, at 60 MW. The table is sorted largest first, so the rest follow it.
- Is there a hydroelectric power plant near me in Wisconsin?
- The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
- Which grid operator runs Wisconsin's hydroelectric power plants?
- Most of them sit inside MISO, according to the balancing-authority code EIA files against each plant. Live conditions for that market are on this site.
- How current is this, and what is left out?
- EIA-860M for 2026-07. Conventional hydroelectric. Pumped storage is counted separately. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.