Gavins Point

Hydro power plant in South Dakota, United States of America. Approximate location 42.8488, -97.4815.

HydroSouth DakotaUnited States of America

Gavins Point is a 132 MW hydro power station in South Dakota, United States of America. It is operated by USACE-Omaha. Based on reported annual generation of 638 GWh, it can supply roughly 182,314 homes. It ranks #1649 of 9,833 United States of America power plants by installed capacity. Commissioned in 1956, it is around 70 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 5.3% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

132MW installed capacity
638GWh reported / yr
182,314homes powered
1956commissioned (~70 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0006624.

Reported generation trend

2013: 671 GWh20132014: 653 GWh20142015: 886 GWh20152016: 673 GWh20162017: 795 GWh20172018: 721 GWh20182019: 638 GWh2019886 GWh

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

Owner

Operated by USACE-Omaha. All plants by this company →

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. 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.

8.9°Cannual mean temp
3,713heating degree-days (base 18°C)
426cooling degree-days (base 18°C)
428 melevation

Monthly mean temperature

J: -8 °CJF: -4 °CFM: 2 °CMA: 9 °CAM: 16 °CMJ: 21 °CJJ: 24 °CJA: 23 °CAS: 18 °CSO: 10 °CON: 1 °CND: -5 °CD24 °C

Heating degree-days here run 51% 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: 80/100 — 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 #142 largest hydro power plant of 1449 in United States of America by capacity.

United States of America has 1449 hydro power plants in this dataset, together about 101,657 MW of capacity.

Nearby power plants

Location

Coordinates 42.8488, -97.4815 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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