Transalta Centralia Generation
Coal power plant in Lewis County, Washington. 729.9 MW of nameplate capacity across 1 generator, operated by TransAlta Centralia Gen LLC.
Also known as Centralia Power Plant · EIA plant 3845
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Key facts
- Capacity
- 729.9 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- July 1973First generator online
- Operator
- TransAlta Centralia Gen LLCEIA operator ID 19099
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Lewis County, WA46.7559, −122.8598
- EIA plant ID
- 3845EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Transalta Centralia Generation produces
Free · EIA-923Net generation, 2025
3.15 TWh
3,150,473 MWh, final
Capacity factor, 2025
49.3%
2024: 44.2%
January to July 2026
0 MWh
Provisional
Range, 2016 to 2025
2.8–7.2
TWh a year. Low 2024, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 9,505,770 | Not reported | 12 of 12 |
| 2001 | 9,021,136 | Not reported | 12 of 12 |
| 2002 | 4,769,153 | Not reported | 5 of 12 |
| 2003 | 11,469,358 | Not reported | 12 of 12 |
| 2004 | 10,642,806 | Not reported | 12 of 12 |
| 2005 | 10,739,697 | Not reported | 12 of 12 |
| 2006 | 6,952,417 | Not reported | 12 of 12 |
| 2007 | 8,881,169 | Not reported | 12 of 12 |
| 2008 | 9,049,253 | Not reported | 12 of 12 |
| 2009 | 7,828,715 | Not reported | 12 of 12 |
| 2010 | 8,759,401 | 56.1% | 12 of 12 |
| 2011 | 5,209,099 | 33.4% | 12 of 12 |
| 2012 | 3,735,730 | 23.9% | 12 of 12 |
| 2013 | 1,701,013 | Not reported | 4 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 5,023,377 | 42.9% | 11 of 12 |
| 2016 | 4,576,835 | Not reported | 12 of 12 |
| 2017 | 5,471,714 | 42.8% | 12 of 12 |
| 2018 | 5,367,383 | 42.0% | 12 of 12 |
| 2019 | 7,154,907 | 56.0% | 12 of 12 |
| 2020 | 5,149,037 | Not reported | 12 of 12 |
| 2021 | 3,114,315 | 48.7% | 12 of 12 |
| 2022 | 3,555,037 | Not reported | 12 of 12 |
| 2023 | 4,143,372 | 64.8% | 12 of 12 |
| 2024 | 2,831,744 | 44.2% | 12 of 12 |
| 2025 | 3,150,473 | 49.3% | 12 of 12 |
| 2026 (provisional, partial year) | 0 | 0.0% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
3.39M
US short tons. 2024: 3.51M
SO₂, 2025
1,022
US short tons
NOx, 2025
2,902
US short tons
CO₂ per MWh, calculated
1.08 t
About 2,155 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (30, 40, 50, 60, BW21, BW22), matched to EIA plant 3845 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
5,226
million gallons
Consumption, 2024
2,922
million gallons
Source
Skookumchuck River
Surface, Fresh. Induced-draft tower
Watershed stress
Low · 0.295
USGS SUI, HUC12 Hanaford Creek
12 of 12 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 2 | Conventional Steam Coal | 729.9 | July 1973 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists TransAlta Centralia Gen LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Transalta Centralia Generation
How much power does Transalta Centralia Generation produce?
Transalta Centralia Generation reported 3,150,473 MWh (3.15 TWh) of net generation in 2025, a 49.3% capacity factor on 729.9 MW of nameplate capacity. From January to July 2026 it reported 0 MWh, which is provisional.
Where is Transalta Centralia Generation?
Transalta Centralia Generation is in Lewis County, Washington, at 46.7559, −122.8598. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Transalta Centralia Generation?
EIA-860M for August 2026 lists TransAlta Centralia Gen LLC as the operator (EIA operator ID 19099). The operator is not always the owner.
When did Transalta Centralia Generation start operating?
Its first generator began operating in July 1973, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page