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Port Washington Generating Station

Gas power plant in Wisconsin, United States of America. Approximate location 43.3842, -87.8689.

GasWisconsinUnited States of America

Port Washington Generating Station is a 1,209 MW gas power station in Wisconsin, United States of America. It is operated by Wisconsin Electric Power Co. Based on reported annual generation of 7,868 GWh, it can supply roughly 2,247,885 homes. It ranks #230 of 9,833 United States of America power plants by installed capacity. Commissioned in 2006, it is around 20 years old — relatively modern. In context, gas supplies about 40.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

1,209MW installed capacity
7,868GWh reported / yr
2,247,885homes powered
2006commissioned (~20 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0004040.

~3,147,040 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

733,576passenger cars driven for a year
410,412homes' yearly energy use
52,450,667tree seedlings grown 10 years to absorb it

Estimated, not measured: from reported annual generation × a typical gas emission factor (~400 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.

Reported generation trend

2013: 3,351 GWh20132014: 2,943 GWh20142015: 4,748 GWh20152016: 5,818 GWh20162017: 5,232 GWh20172018: 5,829 GWh20182019: 7,868 GWh20198k GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Wisconsin Electric Power Co. All plants by this company →

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 43.4°N — which shapes how much energy it can produce and how its output varies through the year.

8.5°Cannual mean temp
3,615heating degree-days (base 18°C)
156cooling degree-days (base 18°C)
175 melevation

Monthly mean temperature

J: -4 °CJF: -2 °CFM: 1 °CMA: 5 °CAM: 10 °CMJ: 16 °CJJ: 20 °CJA: 20 °CAS: 17 °CSO: 11 °CON: 5 °CND: 0 °CD20 °C

Heating degree-days here run 47% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 78/100 — this site sits in the top third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

How it compares & nearby plants

The #84 largest gas power plant of 1818 in United States of America by capacity.

United States of America has 1818 gas power plants in this dataset, together about 546,436 MW of capacity.

Nearby power plants

Location

Coordinates 43.3842, -87.8689 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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