George M Sullivan Generation Plant 2 — United States of America
Gas power plant in Alaska, United States of America. Approximate location 61.2297, -149.7167.
GasAlaskaUnited States of AmericaCCGT · HRSGCO₂ modelled
George M Sullivan Generation Plant 2 is a 346.9 MW gas power station in Alaska, United States of America. It is operated by Anchorage Municipal Light and Power. Based on reported annual generation of 626 GWh, it can supply roughly 179k homes. It ranks #1477 of 10,884 United States of America power plants by installed capacity. Commissioned in 1997, it is around 29 years old — long-established. Its modelled annual emissions are 243,840 t CO₂/yr (Climate TRACE), equivalent to about 57k 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).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0006559.
Data status
Known data
Modelled source data
Calculated from dataset
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: Wikidata P2109; fuel: WRI GPPD
In context: how this plant compares
At 346.9 MW, George M Sullivan Generation Plant 2 is well above the median gas plant in United States of America (121.2 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
~243,840 t CO₂/yr (modelled) — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Key facts
- Load factor
- 21%, from 626 GWh of reported generation; the median for 1622 gas plants in United States of America that report generation is 26%
- Generation trend
- 562 GWh in 2013 and 626 GWh in 2019 (+11%)
- Highest and lowest year
- 2018: 843 GWh; 2014: 494 GWh
- Share of United States of America gas capacity
- less than 0.1% of 789,950 MW across 2,165 plants in this dataset
- Age among peers
- 782 of 1,973 dated gas plants in United States of America are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Anchorage Municipal Light and Power.
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 subarctic (boreal) climate (Köppen Dfc) — Northern Hemisphere, latitude 61.2°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 169% 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: 99/100 — this site sits in the top third of the power plants we cover by heating degree-days.
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.
Site climate & environmental severity
This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #735 largest gas power plant of 2165 in United States of America by capacity.
United States of America has 2165 gas power plants in this dataset, together about 789,950 MW of capacity.
Nearby power plants
- Anchorage 1 · Gas · 77.9 MW · Alaska
- Hank Nikkels Plant 1 · Gas · 50.9 MW · Alaska
- JBER Landfill Gas Power Plant · Waste · 11.5 MW · Alaska
- Southcentral Power Project · Gas · 203.9 MW · Alaska
- International · Gas · 30 MW · Alaska
- Fire Island Wind · Wind · 18 MW · Alaska
Location
Coordinates 61.2297, -149.7167 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is George M Sullivan Generation Plant 2?
George M Sullivan Generation Plant 2 is a 346.9 MW gas power plant in Alaska, United States of America, commissioned in 1997.
How much electricity does George M Sullivan Generation Plant 2 generate?
George M Sullivan Generation Plant 2 generates about 626 GWh of electricity per year.
Who operates George M Sullivan Generation Plant 2?
George M Sullivan Generation Plant 2 is operated by Anchorage Municipal Light and Power.
How much CO₂ does George M Sullivan Generation Plant 2 emit?
George M Sullivan Generation Plant 2 has modelled emissions of about 243,840 tonnes of CO₂ per year (Climate TRACE).