Sidney MT Plant

Coal power plant in Montana, United States of America. Approximate location 47.7172, -104.1356.

CoalMontanaUnited States of America

Sidney MT Plant is a 4 MW coal power plant in Montana, United States of America. It is operated by Sidney Sugars Incorporated. Based on reported annual generation of 7 GWh, it can supply roughly 2,057 homes. It ranks #6569 of 9,833 United States of America power plants by installed capacity. Commissioned in 1950, it is around 76 years old — an older, legacy facility. 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).

4MW installed capacity
7GWh reported / yr
2,057homes powered
1950commissioned (~76 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0057914.

~7,200 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

1,678passenger cars driven for a year
939homes' yearly energy use
120,000tree seedlings grown 10 years to absorb it

Estimated, not measured: from reported annual generation × a typical coal emission factor (~1000 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: 10 GWh20132014: 9 GWh20142015: 6 GWh20152016: 10 GWh20162017: 10 GWh20172018: 9 GWh20182019: 7 GWh201910 GWh

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

Owner

Operated by Sidney Sugars Incorporated.

Local climate & thermal context

This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 47.7°N — which shapes how much energy it can produce and how its output varies through the year.

7.1°Cannual mean temp
4,256heating degree-days (base 18°C)
312cooling degree-days (base 18°C)
660 melevation

Monthly mean temperature

J: -10 °CJF: -6 °CFM: 0 °CMA: 8 °CAM: 14 °CMJ: 19 °CJJ: 23 °CJA: 22 °CAS: 15 °CSO: 9 °CON: -1 °CND: -8 °CD23 °C

Heating degree-days here run 73% 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: 87/100 — 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.

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 #283 largest coal power plant of 286 in United States of America by capacity.

United States of America has 286 coal power plants in this dataset, together about 249,149 MW of capacity.

Nearby power plants

Location

Coordinates 47.7172, -104.1356 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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