Frederickson
Pierce County, Washington · EIA plant ID 99 · Operator: Puget Sound Energy Inc
Nameplate178MWSummer 134 MW
Generators2in service
Net generation21GWh12 mo to Dec 2025
Capacity factor2%gas/coal/oil units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online1981Runs as peaking
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 | 570.6 | 41.2% | 12,778 |
| 2002 | 3.8 | 0.3% | 13,691 |
| 2003 | 4.9 | 0.4% | 13,669 |
| 2004 | 1.9 | 0.1% | 26,571 |
| 2005 | 1.4 | 0.1% | 14,894 |
| 2006 | 12.7 | 1.0% | 14,664 |
| 2007 | 8.9 | 0.7% | 11,833 |
| 2008 | 14.1 | 1.3% | 17,526 |
| 2009 | 16.2 | 1.5% | 16,026 |
| 2010 | 10.7 | 0.9% | 15,154 |
| 2011 | 11.8 | 1.0% | 17,867 |
| 2012 | 33.9 | 2.9% | 17,042 |
| 2013 | 30.7 | 2.6% | 21,052 |
| 2014 | 14.2 | 1.2% | — |
| 2015 | 39.9 | 3.4% | 21,585 |
| 2016 | 19.5 | 1.7% | 27,568 |
| 2017 | 25.5 | 2.2% | — |
| 2018 | 29.9 | 2.5% | 28,593 |
| 2019 | 81.4 | 6.9% | 14,998 |
| 2020 | 29 | 2.5% | 16,103 |
| 2021 | 54.1 | 4.6% | 14,447 |
| 2022 | 49.7 | 4.2% | 12,741 |
| 2023 | 159.6 | 13.6% | 14,535 |
| 2024 | 87.8 | 7.5% | 16,684 |
| 2025 | 20.8 | 1.8% | — |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo448,202 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas134
Net summer MW on oil134
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 88.9 | 67 | Nov 1981 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 88.9 | 67 | Nov 1981 | Operating | — | coming soon |
Owner / operator
Operator: Puget Sound Energy Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Puget Sound Energy Inc | 100.0% | 178 MW |
Nearby plants
Within 80 km.
| Frederickson Power LP | 318 MW | 0.7 km |
| LRI LFGTE Facility | 5 MW | 12.9 km |
| Electron | 23 MW | 17.5 km |
| Greenwater BESS | — | 20.3 km |
| WestRock (WA) | retired | 21.3 km |
| Yelm | 12 MW | 23.6 km |