Taum Sauk

Hydro power plant in Missouri, United States of America. Approximate location 37.5208, -90.8347.

HydroMissouriUnited States of America

Taum Sauk is a 408 MW hydro power station in Missouri, United States of America. It is operated by Union Electric Co - (MO). Based on reported annual generation of -20 GWh, it can supply roughly -5,600 homes. It ranks #810 of 9,833 United States of America power plants by installed capacity. Commissioned in 1964, it is around 62 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).

408MW installed capacity
-20GWh reported / yr
-5,600homes powered
1964commissioned (~62 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0002108.

Reported generation trend

2013: -103 GWh20132014: -136 GWh20142015: -72 GWh20152016: -153 GWh20162017: -148 GWh20172018: -121 GWh20182019: -20 GWh2019-20 GWh

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

Owner

Operated by Union Electric Co - (MO). 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 humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 37.5°N — which shapes how much energy it can produce and how its output varies through the year.

12.9°Cannual mean temp
2,457heating degree-days (base 18°C)
602cooling degree-days (base 18°C)
270 melevation

Monthly mean temperature

J: -1 °CJF: 2 °CFM: 7 °CMA: 13 °CAM: 18 °CMJ: 22 °CJJ: 25 °CJA: 24 °CAS: 20 °CSO: 14 °CON: 8 °CND: 2 °CD25 °C

Heating degree-days here run 0% 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: 50/100 — 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 #56 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 37.5208, -90.8347 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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