Home / North America / United States of America / Sidney A Murray Jr Hydroelectric

Sidney A Murray Jr Hydroelectric

Hydro power plant in Louisiana, United States of America. Approximate location 31.088, -91.6189.

HydroLouisianaUnited States of America

Sidney A Murray Jr Hydroelectric is a 192 MW hydro power station in Louisiana, United States of America. It is operated by First National Bank-Commerce. Based on reported annual generation of 1,366 GWh, it can supply roughly 390,200 homes. It ranks #1322 of 9,833 United States of America power plants by installed capacity. Commissioned in 1990, it is around 36 years old — long-established. 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).

192MW installed capacity
1,366GWh reported / yr
390,200homes powered
1990commissioned (~36 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0054678.

Reported generation trend

2013: 1,045 GWh20132014: 1,090 GWh20142015: 999 GWh20152016: 1,103 GWh20162017: 906 GWh20172018: 1,180 GWh20182019: 1,366 GWh20191k GWh

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

Owner

Operated by First National Bank-Commerce.

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 31.1°N — which shapes how much energy it can produce and how its output varies through the year.

18.8°Cannual mean temp
907heating degree-days (base 18°C)
1,227cooling degree-days (base 18°C)
35 melevation

Monthly mean temperature

J: 9 °CJF: 11 °CFM: 15 °CMA: 19 °CAM: 23 °CMJ: 26 °CJJ: 28 °CJA: 27 °CAS: 25 °CSO: 19 °CON: 14 °CND: 11 °CD28 °C

Heating degree-days here run 63% below 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: 25/100 — this site sits in the bottom 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 #94 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 31.088, -91.6189 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Built from open public data; no personal information. Operate this site? Request a correction or removal.