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Langley Gulch Power Plant

Gas power plant in Idaho, United States of America. Approximate location 43.9044, -116.8197.

GasIdahoUnited States of America

Langley Gulch Power Plant is a 318 MW gas power station in Idaho, United States of America. It is operated by Idaho Power Co. Based on reported annual generation of 1,501 GWh, it can supply roughly 428,971 homes. It ranks #917 of 9,833 United States of America power plants by installed capacity. Commissioned in 2012, it is around 14 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).

318MW installed capacity
1,501GWh reported / yr
428,971homes powered
2012commissioned (~14 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0057028.

~600,560 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

139,991passenger cars driven for a year
78,320homes' yearly energy use
10,009,333tree 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: 0 GWh20132014: 0 GWh20142015: 0 GWh20152016: 0 GWh20162017: 1,350 GWh20172018: 1,131 GWh20182019: 1,501 GWh20192k GWh

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

Owner

Operated by Idaho 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 cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 43.9°N — which shapes how much energy it can produce and how its output varies through the year.

10.5°Cannual mean temp
3,035heating degree-days (base 18°C)
327cooling degree-days (base 18°C)
739 melevation

Monthly mean temperature

J: -2 °CJF: 2 °CFM: 6 °CMA: 10 °CAM: 15 °CMJ: 19 °CJJ: 23 °CJA: 22 °CAS: 17 °CSO: 11 °CON: 4 °CND: -1 °CD23 °C

Heating degree-days here run 23% 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: 63/100 — 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.

A gas turbine here also runs ~0% 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 #559 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 43.9044, -116.8197 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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