Sumpter

Gas power plant in Michigan, United States of America. Approximate location 42.167, -83.5318.

GasMichiganUnited States of AmericaCO₂ reported

Sumpter is a 340 MW gas power station in Michigan, United States of America. It is operated by Wolverine Power Supply Coop. Based on reported annual generation of 275 GWh, it can supply roughly 78,600 homes. It ranks #899 of 9,833 United States of America power plants by installed capacity. Commissioned in 2002, it is around 24 years old — relatively modern. Its measured emissions of 78,183 t CO₂/yr (US EPA GHGRP) are equivalent to about 18,224 cars driven for a year. 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).

340MW installed capacity
275GWh reported / yr
78,600homes powered
78,183t CO₂ / yr (US EPA GHGRP)
2002commissioned (~24 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0007972.

78,183 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

18,224passenger cars driven for a year
10,196homes' yearly energy use
1,303,050tree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to US EPA GHGRP.

Reported generation trend

2013: 84 GWh20132014: 44 GWh20142015: 239 GWh20152016: 339 GWh20162017: 178 GWh20172018: 399 GWh20182019: 275 GWh2019399 GWh

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

Owner

Operated by Wolverine Power Supply Coop. 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 hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 42.2°N — which shapes how much energy it can produce and how its output varies through the year.

9.4°Cannual mean temp
3,431heating degree-days (base 18°C)
305cooling degree-days (base 18°C)
192 melevation

Monthly mean temperature

J: -5 °CJF: -3 °CFM: 2 °CMA: 8 °CAM: 15 °CMJ: 20 °CJJ: 22 °CJA: 21 °CAS: 17 °CSO: 11 °CON: 4 °CND: -2 °CD22 °C

Heating degree-days here run 40% 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: 74/100 — 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 #547 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 42.167, -83.5318 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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