Transalta Centralia Generation — United States of America
Coal power plant in Washington, United States of America. Approximate location 46.7559, -122.8598.
CoalWashingtonUnited States of AmericaCO₂ measured
Transalta Centralia Generation is a 1,459.8 MW coal power station in Washington, United States of America. It is operated by TransAlta Centralia Gen LLC. Based on reported annual generation of 7,155 GWh, it can supply roughly 2.0 million homes. It ranks #341 of 10,884 United States of America power plants by installed capacity. Commissioned in 1973, it is around 53 years old — an older, legacy facility. Its annual emissions of 4,536,949 t CO₂/yr (US EPA GHGRP) are equivalent to about 1.1 million 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 USA0003845.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 1,459.8 MW, Transalta Centralia Generation is well above 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.
4,536,949 t CO₂/yr — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions per US EPA GHGRP (measured for US EPA/EU ETS, modelled for Climate TRACE).
Key facts
- Load factor
- 56%, from 7,155 GWh of reported generation; the median for 244 coal plants in United States of America that report generation is 41%
- Generation trend
- 5,023 GWh in 2015 and 7,155 GWh in 2019 (+42%)
- Highest and lowest year
- 2019: 7,155 GWh; 2016: 4,577 GWh
- Share of United States of America coal capacity
- 0.2% of 621,194 MW across 802 plants in this dataset
- Age among peers
- 346 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 TransAlta Centralia Gen LLC.
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 46.8°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 20% 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: 61/100 — this site sits in the mid 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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), 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 #145 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
- Centralia Power Plant · Gas · 729.9 MW · Washington
- Skookumchuck · Hydro · 1 MW · Washington
- Chehalis Generating Facility · Gas · 593 MW · Washington
- Yelm · Hydro · 12 MW · Washington
- Mayfield · Hydro · 162 MW · Washington
- Mossyrock · Hydro · 300 MW · Washington
Location
Coordinates 46.7559, -122.8598 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Transalta Centralia Generation?
Transalta Centralia Generation is a 1,459.8 MW coal power plant in Washington, United States of America, commissioned in 1973.
How much electricity does Transalta Centralia Generation generate?
Transalta Centralia Generation generates about 7,155 GWh of electricity per year.
Who operates Transalta Centralia Generation?
Transalta Centralia Generation is operated by TransAlta Centralia Gen LLC.
How much CO₂ does Transalta Centralia Generation emit?
Transalta Centralia Generation has measured emissions of about 4,536,949 tonnes of CO₂ per year (US EPA GHGRP).