Spirit Mound

Oil power plant in South Dakota, United States of America. Approximate location 42.8977, -96.9905.

OilSouth DakotaUnited States of AmericaOCGTCO₂ modelled

Spirit Mound is a 135 MW oil power station in South Dakota, United States of America. It is operated by Basin Electric Power Coop. Based on reported annual generation of 5 GWh, it can supply roughly 1.5k homes. It ranks #2457 of 10,938 United States of America power plants by installed capacity. Commissioned in 1978, it is around 48 years old — long-established. Its modelled annual emissions are 88,667 t CO₂/yr (Climate TRACE), equivalent to about 21k cars driven for a year. In context, oil supplies about 0.7% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

135Source-backed capacity
5GWh reported / yr
1,542homes powered
88,667t CO₂ / yr (Climate TRACE)
1978commissioned (~48 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0006092.

Data status

Known data

FacilitySpirit Mound WRI
CountryUnited States of America · South Dakota WRI
Coordinates42.8977, -96.9905 WRI
FuelOil WRI
MW installed capacity135 MW WRI source record; scope not independently normalised
OwnerBasin Electric Power Coop WRI
Commissioned1978 WRI
TechnologyOCGT WRI
GWh reported / yr5 GWh/yr WRI

Modelled source data

CO₂ emissions88,667 t CO₂/yr modelled · Climate TRACE

Calculated from dataset

Capacity rank in country#2457 of 10938 calculated
Fuel-specific rank in country#50 of 902 calculated
Capacity vs country/fuel peers18.75× · 7 MW median · 902 peers calculated
Homes-powered equivalent1,542 calculated from reported generation
Climate8.8°C · HDD 3,758 derived from coordinates
Environmental severityC2 · 34/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

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 tracker 2026 (location L100000408874); fuel: WRI source-record fuel

In context: how this plant compares

At 135 MW, Spirit Mound is well above the median oil plant in United States of America (7 MW). Technically it is described as OCGT. Oil-fired plants burn heavy fuel oil or diesel, usually as peaking or backup capacity on islands and grids without gas pipelines; high fuel cost keeps their utilisation low.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

~88,667 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

21kpassenger cars driven for a year
12khomes' yearly energy use
1.5 milliontree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.

Reported generation trend

2013: 1 GWh20132014: 2 GWh20142015: 0 GWh20152016: 1 GWh20162017: 0 GWh20172018: 1 GWh20182019: 5 GWh20195 GWh

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

Owner

Operated by Basin Electric Power Coop. All plants by this company →

Local climate & thermal context

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 42.9°N — which shapes how much energy it can produce and how its output varies through the year.

8.8°Cannual mean temp
3,758heating degree-days (base 18°C)
411cooling degree-days (base 18°C)
368 melevation

Monthly mean temperature

J: -8 °CJF: -4 °CFM: 2 °CMA: 9 °CAM: 16 °CMJ: 21 °CJJ: 24 °CJA: 22 °CAS: 17 °CSO: 10 °CON: 1 °CND: -6 °CD24 °C

Heating degree-days here run 53% 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.

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.

Site climate & environmental severity

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with thermal cycling the leading environmental stress.

C2ISO 9223 corrosivity (indicative)
34/100environmental-severity index
31.7°Cseasonal temperature swing
716 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #50 largest oil power plant of 902 in United States of America by capacity.

United States of America has 902 oil power plants in this dataset, together about 40,022 MW of capacity.

Nearby power plants

Location

Coordinates 42.8977, -96.9905 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Spirit Mound?

Spirit Mound is a 135 MW source-record oil power plant in South Dakota, United States of America, commissioned in 1978.

How much electricity does Spirit Mound generate?

Spirit Mound generates about 5 GWh of electricity per year.

How many homes can Spirit Mound power?

Its output is enough to supply roughly 1,542 homes.

Who operates Spirit Mound?

Spirit Mound is operated by Basin Electric Power Coop.

How much CO₂ does Spirit Mound emit?

Spirit Mound has modelled emissions of about 88,667 tonnes of CO₂ per year (Climate TRACE).

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