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729.9 MW Sub. Coal operating in Lewis, WA
729.9 MW
Nameplate Capacity
1
Generators
unit
Conventional Steam Coal
Technology
1973
Operating Since
Coordinates
46.7559, -122.8598
County
Lewis, WA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | TransAlta Centralia Gen LLC | — | — |
| Owner(s) | TransAlta Centralia Gen LLC | — | — |
| Status | Operating | — | — |
The Centralia Power Plant, known also as the Centralia Coal Plant, Centralia Steam Plant, or Centralia Steam-Electric Plant, is a coal-fired power plant supplemented with a natural gas power plant known as the Big Hanaford Power Plant. The combined coal and natural gas facility is located east of Centralia in the Hanaford Valley of Lewis County, Washington.
Read more on WikipediaTransalta Centralia Generation is a 729.9 MW coal-fired power plant located in Lewis County, Washington. The plant began operating in 1973 and is owned and operated by TransAlta Centralia Gen LLC. It utilizes conventional steam coal technology and subbituminous coal (SUB) as its primary fuel source. The facility consists of a single generator.
In the most recent year with available data, Transalta Centralia Generation produced 3,150,473 MWh of electricity, achieving a capacity factor of 49.4%. The plant operates within the Bonneville Power Administration balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region. It is ranked as the largest coal plant in Washington state (1 of 1) and the 42nd largest in the United States (out of 75 coal plants).
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Bonneville Power Administration (BPAT)
Grid Voltage
500.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
84.1K MWh
Latest Month
3.2M MWh
Annual Generation
49.4%
Capacity Factor
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CO₂ Intensity
2394 lb/MWh
NOx
2 lb/MWh
SO₂
0.561 lb/MWh
CH₄
0.282 lb/MWh
N₂O
0.041 lb/MWh
Capacity Factor
64.8%
Annual Net Gen
4143 GWh
CO₂eq
2413 lb/MWh
Subregion
WECC Northwest
No financial data available for this plant.
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-05-31
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