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Arpin Dam

Hydro power plant · Sawyer County, Wisconsin

Nameplate capacity
1.4 MW
Rank in Wisconsin
#250
of 278 plants
In service since
1971
September 1971

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Zero6 Energy Hydro
County
Sawyer County
Generating units
3
Share of state capacity
0.01%
Rank among hydro plants in Wisconsin
#50 of 61
EIA plant code
3995

Generating units

Individual generating units at Arpin Dam
UnitTechnologyNameplateSummerOnlineStatus
1Conventional Hydroelectric0.6 MW0.6 MW1971Operating
2Conventional Hydroelectric0.6 MW0.6 MW1971Operating
3Conventional Hydroelectric0.2 MW0.2 MW1973Operating

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

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 1.4 MW solar plant and a 1.4 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