Du Bay

Hydro power plant · Portage County, Wisconsin

Nameplate capacity
7.2 MW
Rank in Wisconsin
#123
of 278 plants
In service since
1942
January 1942

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Consolidated Water Power Co
County
Portage County
Generating units
4
Share of state capacity
0.04%
Rank among hydro plants in Wisconsin
#19 of 61
EIA plant code
3972

Generating units

Individual generating units at Du Bay
UnitTechnologyNameplateSummerOnlineStatus
2Conventional Hydroelectric2.0 MW2.0 MW1942Operating
3Conventional Hydroelectric2.0 MW2.0 MW1942Operating
4Conventional Hydroelectric2.0 MW2.0 MW1942Operating
1Conventional Hydroelectric1.2 MW1.2 MW1942Operating

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

Similarly sized plants in Wisconsin

Spring Prairie Solar WI, LLCSolar7.5 MW
FennimoreOther7.4 MW
Blount BESSBattery storage7.0 MW
GordonOther7.0 MW

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 7.2 MW solar plant and a 7.2 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