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Washington · TransAlta

Centralia

Key facts

1Coal unitsof 382 tracked nationally
730 MWCapacity0.4% of the tracked fleet
53 yearsAge of oldest unitcame online in 1973
3.4 MtCO2 in 20250.4% of fleet-wide emissions
1,022 tSO2 in 2025
18.1 lbsMercury in 2025
3,150 GWh2025 net generation0.4% of tracked generation
$58.9M202c cost to ratepayers

In 2021, clean power produced energy 37.1% more cheaply

How this is calculated
Annual savings with clean power in 2021$36.4M≈37.1% cheaper than running this plant — estimated from its capacity at a 42% capacity factor.
Gap
$13.6/MWh
Difference
+37.1%
Cheapest clean power alternative
regional wind

Units (1)

ExpandTypeStatusRetirement
BW22Tangentially-fired7301973 (53yrs)Operating12/11/2026 (was 12/2025)

Documents & sources

Health cost of the 202(c) orders

Every figure below is for one year of this plant running — not a total for its lifetime, and not tied to how long the 202(c) orders last. They are what one more year of operation costs the people living downwind of Centralia.

$962.3K–$993.5K

Health damages

In 2023 dollars.


41 daysSchool days lost

Figures are rounded for readability; exact modelled values are shown below. See the full methodology here.

Source: EDF ran EPA’s CO-Benefits Risk Assessment (COBRA) screening model on this plant. COBRA is a screening tool, not a full air-quality model: it works at the county level and covers health impacts from fine particles and ozone only — it does not estimate health harms from mercury or other air toxics.

DOE Coal Plant Mandates

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