How many hydro power plants are in Wisconsin?

Wisconsin has 66 operating utility-scale hydro power plants with 0.5 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest hydro power plant in Wisconsin?

Jim Falls in Chippewa County, Wisconsin is the largest, at 60 MW. It came online in 1988.

How many hydro power plants were built in Wisconsin in 2025?

0 hydro power plants came online in Wisconsin in 2025, with 0 MW of capacity.

Who is developing hydro power plants in Wisconsin?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Hydro power plants in Wisconsin

Wisconsin has 66 operating hydro power plants with 0.5 GW of capacity.

Operating66

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

Wisconsin had 66 hydro power plants online in 2016 and 66 in 2026

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Hydro power plants online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest hydro power plants in Wisconsin

Operating, by capacity

#	Hydro power plant	County	Year online	Capacity
1	Jim Falls	Chippewa County	1988	60 MW
2	Wissota	Chippewa County	1917	39 MW
3	Cornell	Chippewa County	1977	35 MW
4	Holcombe	Chippewa County	1950	34 MW
5	Prairie Du Sac	Sauk County	1940	33 MW
6	St Croix Falls	Polk County	1923	23 MW
7	Chippewa Falls	Chippewa County	1928	22 MW
8	Petenwell	Juneau County	1950	20 MW
9	Flambeau Hydroelectric Station	Rusk County	1951	19 MW
10	Grandfather Falls	Lincoln County	1938	17 MW

Hydro power plants that came online most recently in Wisconsin

Newest first

#	Hydro power plant	County	Year online	Capacity
1	Twin Falls (WI)	Florence County	2016	9 MW
2	New Badger	Outagamie County	2014	8 MW
3	Big Falls	Rusk County	1993	8 MW
4	Jim Falls	Chippewa County	1988	60 MW
5	Park Mill	Marinette County	1988	2 MW
6	Combined Locks	Outagamie County	1988	6 MW
7	LAC Courte Oreilles Hydroelect	Sawyer County	1986	3 MW
8	Hat Rapids	Oneida County	1984	2 MW
9	Merrill	Lincoln County	1984	2 MW
10	Ladysmith Dam	Rusk County	1983	3 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks hydro power plants

Operating hydro power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about hydro power plants in Wisconsin

How many hydro power plants are in Wisconsin?: Wisconsin has 66 operating utility-scale hydro power plants with 0.5 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest hydro power plant in Wisconsin?: Jim Falls in Chippewa County, Wisconsin is the largest, at 60 MW. It came online in 1988.
How many hydro power plants were built in Wisconsin in 2025?: 0 hydro power plants came online in Wisconsin in 2025, with 0 MW of capacity.
Who is developing hydro power plants in Wisconsin?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.