Healy — United States of America
Coal power plant in Alaska, United States of America. Approximate location 63.8542, -148.95.
CoalAlaskaUnited States of AmericaCO₂ modelled
Healy is a 92.8 MW coal power plant in Alaska, United States of America. It is operated by Golden Valley Elec Assn Inc. Based on reported annual generation of 345 GWh, it can supply roughly 98k homes. It ranks #2898 of 10,884 United States of America power plants by installed capacity. Commissioned in 1987, it is around 39 years old — long-established. Its modelled annual emissions are 248,830 t CO₂/yr (Climate TRACE), equivalent to about 58k cars driven for a year. In context, coal supplies about 16.3% 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 USA0006288.
Data status
Known data
Modelled source data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Capacity provenance
The public capacity above is the current source-record value. A 2026 tracker candidate lists 50 MW for Healy Power Plant, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000103786; fuel: WRI GPPD
In context: how this plant compares
At 92.8 MW, Healy is below the median coal plant in United States of America (558 MW). Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
~248,830 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
- 42%, from 345 GWh of reported generation; the median for 244 coal plants in United States of America that report generation is 41%
- Share of United States of America coal capacity
- less than 0.1% of 621,194 MW across 802 plants in this dataset
- Age among peers
- 574 of 745 dated coal 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 Golden Valley Elec Assn Inc.
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a subarctic (boreal) climate (Köppen Dfc) — Northern Hemisphere, latitude 63.9°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 212% 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: 100/100 — this site sits in the top third of the power plants we cover by heating degree-days.
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 benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with thermal cycling 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 #684 largest coal power plant of 802 in United States of America by capacity.
United States of America has 802 coal power plants in this dataset, together about 621,194 MW of capacity.
Nearby power plants
- Healy Power Plant · Coal · 50 MW · Alaska
- Eva Creek Wind · Wind · 24.6 MW · Alaska
- Battery Energy Storage System · Storage · 40 MW · Alaska
- University of Alaska Fairbanks · Coal · 22.6 MW · Alaska
- Utility Plants Section · Coal · 20 MW · Alaska
- Aurora Energy LLC Chena · Coal · 27.5 MW · Alaska
Location
Coordinates 63.8542, -148.95 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Healy?
Healy is a 92.8 MW coal power plant in Alaska, United States of America, commissioned in 1987.
How much electricity does Healy generate?
Healy generates about 345 GWh of electricity per year.
Who operates Healy?
Healy is operated by Golden Valley Elec Assn Inc.
How much CO₂ does Healy emit?
Healy has modelled emissions of about 248,830 tonnes of CO₂ per year (Climate TRACE).