J Lamar Stall Unit

Gas power plant in Louisiana, United States of America. Approximate location 32.5195, -93.7601.

GasLouisianaUnited States of America

J Lamar Stall Unit is a 624 MW gas power station in Louisiana, United States of America. It is operated by Southwestern Electric Power Co. Based on reported annual generation of 2,530 GWh, it can supply roughly 722,714 homes. It ranks #584 of 9,833 United States of America power plants by installed capacity. Commissioned in 2010, it is around 16 years old — relatively modern. In context, gas supplies about 40.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

624MW installed capacity
2,530GWh reported / yr
722,714homes powered
2010commissioned (~16 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0056565.

~1,011,800 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

235,851passenger cars driven for a year
131,951homes' yearly energy use
16,863,333tree seedlings grown 10 years to absorb it

Estimated, not measured: from reported annual generation × a typical gas emission factor (~400 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.

Reported generation trend

2013: 2,925 GWh20132014: 3,303 GWh20142015: 3,589 GWh20152016: 3,559 GWh20162017: 2,886 GWh20172018: 2,677 GWh20182019: 2,530 GWh20194k GWh

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

Owner

Operated by Southwestern Electric Power Co. All plants by this company →

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 32.5°N — which shapes how much energy it can produce and how its output varies through the year.

18.2°Cannual mean temp
1,125heating degree-days (base 18°C)
1,214cooling degree-days (base 18°C)
62 melevation

Monthly mean temperature

J: 7 °CJF: 10 °CFM: 14 °CMA: 18 °CAM: 22 °CMJ: 26 °CJJ: 28 °CJA: 28 °CAS: 25 °CSO: 19 °CON: 13 °CND: 9 °CD28 °C

Heating degree-days here run 54% 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: 28/100 — 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.

A gas turbine here also runs ~2% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

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 #329 largest gas power plant of 1818 in United States of America by capacity.

United States of America has 1818 gas power plants in this dataset, together about 546,436 MW of capacity.

Nearby power plants

Location

Coordinates 32.5195, -93.7601 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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