Storm Lake II

Wind power plant in Iowa, United States of America. Approximate location 42.8417, -95.405.

WindIowaUnited States of America

Storm Lake II is a 80 MW wind power plant in Iowa, United States of America. It is operated by Allete Clean Energy. Based on reported annual generation of 137 GWh, it can supply roughly 39,057 homes. It ranks #2201 of 9,833 United States of America power plants by installed capacity. Commissioned in 1999, it is around 27 years old — long-established. 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).

80MW installed capacity
137GWh reported / yr
39,057homes powered
1999commissioned (~27 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0055287.

Reported generation trend

2013: 193 GWh20132014: 193 GWh20142015: 186 GWh20152016: 154 GWh20162017: 152 GWh20172018: 134 GWh20182019: 137 GWh2019193 GWh

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

Owner

Operated by Allete Clean Energy. 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 hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 42.8°N — which shapes how much energy it can produce and how its output varies through the year.

8.0°Cannual mean temp
3,944heating degree-days (base 18°C)
330cooling degree-days (base 18°C)
424 melevation

Monthly mean temperature

J: -9 °CJF: -6 °CFM: 1 °CMA: 9 °CAM: 16 °CMJ: 21 °CJJ: 23 °CJA: 21 °CAS: 17 °CSO: 10 °CON: 1 °CND: -6 °CD23 °C

Heating degree-days here run 60% 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: 84/100 — 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 #513 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 42.8417, -95.405 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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