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Tiber Dam Hydroelectric Plant

Hydro power plant in Montana, United States of America. Approximate location 48.318, -111.1018.

HydroMontanaUnited States of America

Tiber Dam Hydroelectric Plant is a 8 MW hydro power plant in Montana, United States of America. It is operated by Tiber Montana LLC. Based on reported annual generation of 56 GWh, it can supply roughly 15,942 homes. It ranks #5079 of 9,833 United States of America power plants by installed capacity. Commissioned in 2004, it is around 22 years old — relatively modern. 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).

8MW installed capacity
56GWh reported / yr
15,942homes powered
2004commissioned (~22 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0056499.

Reported generation trend

2013: 52 GWh20132014: 56 GWh20142015: 55 GWh20152016: 52 GWh20162017: 51 GWh20172018: 54 GWh20182019: 56 GWh201956 GWh

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

Owner

Operated by Tiber Montana LLC.

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 48.3°N — which shapes how much energy it can produce and how its output varies through the year.

6.9°Cannual mean temp
4,167heating degree-days (base 18°C)
137cooling degree-days (base 18°C)
924 melevation

Monthly mean temperature

J: -8 °CJF: -4 °CFM: 1 °CMA: 7 °CAM: 12 °CMJ: 17 °CJJ: 20 °CJA: 20 °CAS: 14 °CSO: 8 °CON: 0 °CND: -5 °CD20 °C

Heating degree-days here run 70% 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: 86/100 — 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 #739 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 48.318, -111.1018 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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