Coal power plant in Illinois, United States of America. Approximate location 39.870008, -88.890964.
CoalIllinoisUnited States of Americasubcritical
Archer Daniels Midland Decatur Power Plant is a 335 MW coal power station in Illinois, United States of America. It is operated by Archer-Daniels-Midland Co [100%]. Based on its capacity (estimated), it can supply roughly 419k homes (estimated). It ranks #1564 of 10,938 United States of America power plants by installed capacity. Commissioned in 1987, it is around 39 years old — long-established. In context, coal supplies about 16.3% 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 GEM_coa_archerdanielsmidland_unite_3.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.
capacity: GEM · 2026 · L100000103852; fuel: GEM GCPT
At 335 MW, Archer Daniels Midland Decatur Power Plant is below the median coal plant in United States of America (558 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Archer-Daniels-Midland Co [100%].
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 39.9°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 20% 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: 61/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
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 #507 largest coal power plant of 802 in United States of America by capacity.
United States of America has 802 coal power plants in this dataset, together about 621,194 MW of capacity.
Coordinates 39.870008, -88.890964 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Archer Daniels Midland Decatur Power Plant is a 335 MW coal power plant in Illinois, United States of America, commissioned in 1987.
Its output is enough to supply roughly 419,228 homes (estimated).
Archer Daniels Midland Decatur Power Plant is operated by Archer-Daniels-Midland Co [100%].
