Mint Farm Generating Station
Cowlitz County, Washington · EIA plant ID 55700 · Operator: Puget Sound Energy Inc
Nameplate319MWSummer 270 MW
Generators2in service
Net generation2,220GWh12 mo to Dec 2025
Capacity factor94%gas/coal/oil units, summer MW
Heat rate7,565Btu/kWhfossil units, electric fuel, HHV
First online2008Runs as baseload
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) |
|---|---|---|---|
| 2008 | 718.1 | 28.0% | 7,437 |
| 2009 | 1,392.5 | 54.4% | 7,169 |
| 2010 | 1,443 | 59.7% | 7,151 |
| 2011 | 700.3 | 29.0% | 7,390 |
| 2012 | 1,107 | 45.7% | 7,276 |
| 2013 | 1,614.3 | 66.8% | 7,225 |
| 2014 | 1,288.9 | 53.3% | 7,190 |
| 2015 | 1,699.9 | 70.3% | 7,406 |
| 2016 | 1,057.9 | 43.6% | 7,536 |
| 2017 | 878.5 | 34.8% | 7,425 |
| 2018 | 1,363.4 | 57.6% | 7,301 |
| 2019 | 1,864.7 | 78.8% | 7,419 |
| 2020 | 1,729.6 | 72.9% | 7,534 |
| 2021 | 1,796.5 | 75.9% | 7,332 |
| 2022 | 1,605.4 | 67.9% | 7,459 |
| 2023 | 1,989.6 | 84.1% | 7,303 |
| 2024 | 2,306.4 | 97.3% | 7,269 |
| 2025 | 2,220 | 93.9% | 7,565 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1STG | Natural Gas Fired Combined Cycle | CA | 133 | 120 | Jan 2008 | Operating | — | coming soon |
| CTG1 | Natural Gas Fired Combined Cycle | CT | 186 | 150 | Jan 2008 | 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% | 319 MW |
Nearby plants
Within 80 km.
| Nippon Dynawave Packaging Longview WA | 62 MW | 2 km |
| Longview Fibre | 45 MW | 6.5 km |
| Beaver | 611 MW | 15 km |
| Port Westward Unit 2 | 226 MW | 15 km |
| Port Westward | 483 MW | 15 km |
| Alden Bailey Power Plant | retired | 32.5 km |