Sleeping Bear LLC

Wind power plant in Oklahoma, United States of America. Approximate location 36.6403, -99.5006.

WindOklahomaUnited States of America

Sleeping Bear LLC is a 94 MW wind power plant in Oklahoma, United States of America. It is operated by NRG Energy Gas & Wind Holdings Inc. Based on reported annual generation of 241 GWh, it can supply roughly 68,885 homes. It ranks #2058 of 9,833 United States of America power plants by installed capacity. Commissioned in 2007, it is around 19 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 10.3% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

94MW installed capacity
241GWh reported / yr
68,885homes powered
2007commissioned (~19 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0056621.

Reported generation trend

2013: 308 GWh20132014: 310 GWh20142015: 281 GWh20152016: 290 GWh20162017: 274 GWh20172018: 270 GWh20182019: 241 GWh2019310 GWh

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

Owner

Operated by NRG Energy Gas & Wind Holdings Inc. All plants by this company →

Local climate & thermal context

This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 36.6°N — which shapes how much energy it can produce and how its output varies through the year.

14.3°Cannual mean temp
2,223heating degree-days (base 18°C)
883cooling degree-days (base 18°C)
617 melevation

Monthly mean temperature

J: 1 °CJF: 4 °CFM: 9 °CMA: 14 °CAM: 19 °CMJ: 24 °CJJ: 27 °CJA: 26 °CAS: 22 °CSO: 15 °CON: 8 °CND: 2 °CD27 °C

Heating degree-days here run 10% below 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: 46/100 — 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.

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 #490 largest wind power plant of 1139 in United States of America by capacity.

United States of America has 1139 wind power plants in this dataset, together about 104,477 MW of capacity.

Nearby power plants

Location

Coordinates 36.6403, -99.5006 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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