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Port Edwards Mill

Hydro power plant · Wood County, Wisconsin

Nameplate capacity

6.7 MW

Rank in Wisconsin

#129

of 278 plants

In service since

1938

January 1938

Details

Primary fuel: Hydro
Technology: Conventional Hydroelectric
Operator: Domtar Industries Inc
County: Wood County
Generating units: 11
Share of state capacity: 0.03%
Rank among hydro plants in Wisconsin: #21 of 61
EIA plant code: 54103

Generating units

Individual generating units at Port Edwards Mill
Unit	Technology	Nameplate	Summer	Online	Status
JHG1	Conventional Hydroelectric	1.3 MW	1.2 MW	2026	Operating
HG5	Conventional Hydroelectric	0.8 MW	0.8 MW	2026	Operating
HG6	Conventional Hydroelectric	0.8 MW	0.8 MW	2026	Operating
JHG2	Conventional Hydroelectric	0.6 MW	0.6 MW	1938	Operating
JHG3	Conventional Hydroelectric	0.6 MW	0.6 MW	1939	Operating
JHG5	Conventional Hydroelectric	0.6 MW	0.6 MW	1977	Operating
HG1	Conventional Hydroelectric	0.4 MW	0.4 MW	2013	Operating
HG2	Conventional Hydroelectric	0.4 MW	0.4 MW	2013	Operating
HG3	Conventional Hydroelectric	0.4 MW	0.4 MW	2013	Operating
HG4	Conventional Hydroelectric	0.4 MW	0.4 MW	2013	Operating
JHG4	Conventional Hydroelectric	0.4 MW	0.4 MW	1943	Operating

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

Huiskamp BESS	Battery storage	7.0 MW
West Middleton BESS	Battery storage	7.0 MW
Elroy	Other	6.6 MW
Caldron Falls	Hydro	6.4 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 6.7 MW solar plant and a 6.7 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