Transalta Centralia Generation
Lewis County, Washington · EIA plant ID 3845 · Operator: TransAlta Centralia Gen LLC
×730 MW coal retired since 2020 (latest Dec 2020)
Nameplate730MWSummer 670 MW
Generators1in service
Net generation1,224GWh12 mo to Aug 2026
Capacity factor7%gas/coal/oil units, summer MW
Heat rate11,536Btu/kWhfossil units, electric fuel, HHV
First online1973Runs as peaking
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 9,021.1 | — | — |
| 2002 | 8,836.8 | — | — |
| 2003 | 11,469.4 | 78.8% | 10,354 |
| 2004 | 10,642.8 | 72.9% | 10,539 |
| 2005 | 10,739.7 | 73.8% | 10,505 |
| 2006 | 6,952.4 | 47.8% | 10,319 |
| 2007 | 8,881.2 | 61.0% | 10,757 |
| 2008 | 9,049.3 | 63.1% | 10,383 |
| 2009 | 7,828.7 | 54.8% | 10,697 |
| 2010 | 8,759.4 | 62.6% | 10,769 |
| 2011 | 5,209.1 | 37.3% | 10,601 |
| 2012 | 3,735.7 | 26.7% | 10,878 |
| 2013 | 6,711.4 | 57.2% | 10,881 |
| 2014 | 6,683.7 | 56.9% | 11,061 |
| 2015 | 5,023.4 | 42.8% | 11,235 |
| 2016 | 4,576.8 | 38.9% | 11,255 |
| 2017 | 5,471.7 | 46.6% | 11,041 |
| 2018 | 5,367.4 | 45.7% | 11,155 |
| 2019 | 7,154.9 | 61.0% | 11,105 |
| 2020 | 5,149 | 45.7% | 11,257 |
| 2021 | 3,114.3 | 53.1% | 11,414 |
| 2022 | 3,555 | 60.6% | 11,501 |
| 2023 | 4,143.4 | 70.6% | 11,627 |
| 2024 | 2,831.7 | 48.1% | 11,750 |
| 2025 | 3,150.5 | 53.7% | 11,659 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 2 | Conventional Steam Coal | ST | 729.9 | 670 | Jul 1973 | Operating | — | coming soon |
| BD21 | Conventional Steam Coal | ST | 729.9 | 702.5 | Dec 1972 | not_current | — | coming soon |
| BD22 | Conventional Steam Coal | ST | 729.9 | 702.5 | Jul 1973 | not_current | — | coming soon |
| 1 | Conventional Steam Coal | ST | 729.9 | 670 | Dec 1972 | Retired Dec 2020 | — | coming soon |
| 30 | Natural Gas Fired Combined Cycle | CT | 60.5 | 44 | Aug 2002 | Retired Jan 2013 | — | coming soon |
| 40 | Natural Gas Fired Combined Cycle | CT | 60.5 | 44 | Aug 2002 | Retired Jan 2013 | — | coming soon |
| 50 | Natural Gas Fired Combined Cycle | CT | 60.5 | 44 | Aug 2002 | Retired Jan 2013 | — | coming soon |
| 60 | Natural Gas Fired Combined Cycle | CT | 60.5 | 44 | Aug 2002 | Retired Jan 2013 | — | coming soon |
| 70 | Natural Gas Fired Combined Cycle | CA | 80 | 80 | Aug 2002 | Retired Jan 2013 | — | coming soon |
Owner / operator
Operator: TransAlta Centralia Gen LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| TransAlta Centralia Gen LLC | 100.0% | 730 MW |
Nearby plants
Within 80 km.
| Centralia Battery Energy Storage System | — | 3.3 km |
| Skookumchuck | 1 MW | 11.1 km |
| Chehalis Generating Facility | 593 MW | 15.4 km |
| Skookumchuck Wind Facility | 136 MW | 18.2 km |
| Yelm | 12 MW | 29.7 km |
| Mayfield | 162 MW | 34.9 km |