Jeffrey

Hydro power plant in Nebraska, United States of America. Approximate location 40.9594, -100.3979.

HydroNebraskaUnited States of America

Jeffrey is a 22 MW hydro power plant in Nebraska, United States of America. It is operated by Central Nebraska Pub P&I Dist. Based on reported annual generation of 132 GWh, it can supply roughly 37,857 homes. It ranks #3606 of 9,833 United States of America power plants by installed capacity. Commissioned in 1941, it is around 85 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).

22MW installed capacity
132GWh reported / yr
37,857homes powered
1941commissioned (~85 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0002227.

Reported generation trend

2013: 84 GWh20132014: 96 GWh20142015: 139 GWh20152016: 144 GWh20162017: 115 GWh20172018: 115 GWh20182019: 132 GWh2019144 GWh

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

Owner

Operated by Central Nebraska Pub P&I Dist. 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 41.0°N — which shapes how much energy it can produce and how its output varies through the year.

9.6°Cannual mean temp
3,448heating degree-days (base 18°C)
390cooling degree-days (base 18°C)
816 melevation

Monthly mean temperature

J: -5 °CJF: -2 °CFM: 3 °CMA: 9 °CAM: 15 °CMJ: 20 °CJJ: 24 °CJA: 23 °CAS: 17 °CSO: 10 °CON: 2 °CND: -3 °CD24 °C

Heating degree-days here run 40% 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: 75/100 — 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 #464 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 40.9594, -100.3979 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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