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Park Mill

Hydro power plant · Marinette County, Wisconsin

Nameplate capacity
2.1 MW
Rank in Wisconsin
#224
of 278 plants
In service since
1946
January 1946

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Eagle Creek Renewable Energy, LLC
County
Marinette County
Generating units
6
Share of state capacity
0.01%
Rank among hydro plants in Wisconsin
#45 of 61
EIA plant code
50408

Generating units

Individual generating units at Park Mill
UnitTechnologyNameplateSummerOnlineStatus
1Conventional Hydroelectric0.4 MW0.4 MW2020Operating
3Conventional Hydroelectric0.4 MW0.4 MW1946Operating
6Conventional Hydroelectric0.4 MW0.4 MW1966Operating
7Conventional Hydroelectric0.4 MW0.4 MW1968Operating
10Conventional Hydroelectric0.3 MW0.3 MW1988Operating
2Conventional Hydroelectric0.2 MW0.2 MW2022Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

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About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 2.1 MW solar plant and a 2.1 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Wisconsin power plants · What Wisconsin actually generates