AES Alamitos LLC

Gas power plant in California, United States of America. Approximate location 33.7688, -118.1009.

GasCaliforniaUnited States of AmericaCO₂ reported

AES Alamitos LLC is a 1,115 MW gas power station in California, United States of America. It is operated by AES Alamitos LLC. Based on reported annual generation of 581 GWh, it can supply roughly 166,028 homes. It ranks #269 of 9,833 United States of America power plants by installed capacity. Commissioned in 1962, it is around 64 years old — an older, legacy facility. Its measured emissions of 1,519,042 t CO₂/yr (US EPA GHGRP) are equivalent to about 354,089 cars driven for a year. 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).

1,115MW installed capacity
581GWh reported / yr
166,028homes powered
1,519,042t CO₂ / yr (US EPA GHGRP)
1962commissioned (~64 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0000315.

1,519,042 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

354,089passenger cars driven for a year
198,101homes' yearly energy use
25,317,367tree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to US EPA GHGRP.

Reported generation trend

2013: 1,529 GWh20132014: 1,370 GWh20142015: 1,053 GWh20152016: 889 GWh20162017: 855 GWh20172018: 958 GWh20182019: 581 GWh20192k GWh

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

Owner

Operated by AES Alamitos LLC.

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 33.8°N — which shapes how much energy it can produce and how its output varies through the year.

17.9°Cannual mean temp
544heating degree-days (base 18°C)
499cooling degree-days (base 18°C)
12 melevation

Monthly mean temperature

J: 14 °CJF: 15 °CFM: 15 °CMA: 17 °CAM: 18 °CMJ: 20 °CJJ: 22 °CJA: 23 °CAS: 22 °CSO: 20 °CON: 16 °CND: 14 °CD23 °C

Heating degree-days here run 78% 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: 21/100 — 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 #106 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 33.7688, -118.1009 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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