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Cheyenne Prairie Generating Station

Gas power plant in Wyoming, United States of America. Approximate location 41.1236, -104.72.

GasWyomingUnited States of America

Cheyenne Prairie Generating Station is a 140 MW gas power station in Wyoming, United States of America. It is operated by Black Hills Service Company LLC. Based on reported annual generation of 313 GWh, it can supply roughly 89,457 homes. It ranks #1608 of 9,833 United States of America power plants by installed capacity. Commissioned in 2014, it is around 12 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).

140MW installed capacity
313GWh reported / yr
89,457homes powered
2014commissioned (~12 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0057703.

~125,240 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

29,193passenger cars driven for a year
16,333homes' yearly energy use
2,087,333tree 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

2014: 49 GWh20142015: 109 GWh20152016: 162 GWh20162017: 124 GWh20172018: 187 GWh20182019: 313 GWh2019313 GWh

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

Owner

Operated by Black Hills Service Company LLC. 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 cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 41.1°N — which shapes how much energy it can produce and how its output varies through the year.

8.1°Cannual mean temp
3,746heating degree-days (base 18°C)
146cooling degree-days (base 18°C)
1,775 melevation

Monthly mean temperature

J: -3 °CJF: -1 °CFM: 2 °CMA: 6 °CAM: 12 °CMJ: 17 °CJJ: 21 °CJA: 20 °CAS: 15 °CSO: 9 °CON: 2 °CND: -2 °CD21 °C

Heating degree-days here run 52% 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: 81/100 — 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 #779 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 41.1236, -104.72 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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