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Port Washington Generating Station

Natural gas power plant · Ozaukee County, Wisconsin

Nameplate capacity

1,230 MW

Rank in Wisconsin

of 278 plants

In service since

2005

July 2005

Details

Primary fuel: Natural gas
Technology: Natural Gas Fired Combined Cycle
Operator: Wisconsin Electric Power Co
County: Ozaukee County
Generating units: 6
Share of state capacity: 6.23%
Rank among natural gas plants in Wisconsin: #1 of 41
EIA plant code: 4040

Generating units

Individual generating units at Port Washington Generating Station
Unit	Technology	Nameplate	Summer	Online	Status
ST1	Natural Gas Fired Combined Cycle	269 MW	265 MW	2008	Operating
ST2	Natural Gas Fired Combined Cycle	269 MW	265 MW	2005	Operating
1CT1	Natural Gas Fired Combined Cycle	173 MW	178 MW	2008	Operating
1CT2	Natural Gas Fired Combined Cycle	173 MW	179 MW	2008	Operating
2CT1	Natural Gas Fired Combined Cycle	173 MW	175 MW	2005	Operating
2CT2	Natural Gas Fired Combined Cycle	173 MW	175 MW	2005	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

Elm Road Generating Station	Coal	1,403 MW
Point Beach Nuclear Plant	Nuclear	1,311 MW
Columbia (WI)	Coal	1,112 MW
Weston	Coal	946 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 1,230 MW solar plant and a 1,230 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