Gas power plant in Illinois, United States of America. Approximate location 39.5698, -90.436.
GasIllinoisUnited States of AmericaCO₂ reported
Alsey is a 173 MW gas power station in Illinois, United States of America. It is operated by Prairie Power Inc. Based on reported annual generation of 15 GWh, it can supply roughly 4,285 homes. It ranks #1392 of 9,833 United States of America power plants by installed capacity. Commissioned in 2003, it is around 23 years old — relatively modern. Its measured emissions of 11,569 t CO₂/yr (US EPA GHGRP) are equivalent to about 2,697 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).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0007818.
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to US EPA GHGRP.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by Prairie Power Inc. All plants by this company →
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 39.6°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 16% 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: 58/100 — this site sits in the mid 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.
The #724 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.
Coordinates 39.5698, -90.436 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
