Tucannon River Wind Farm
Columbia County, Washington · EIA plant ID 58571 · Operator: Portland General Electric Co
Nameplate267MWSummer 267 MW
Generators1in service
Net generation737GWh12 mo to Dec 2025
Capacity factor32%wind units, summer MW
Heat rate—thermal plants only
First online2014
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), wind 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2015 | 758.2 | 32.4% | — |
| 2016 | 869.4 | 37.1% | — |
| 2017 | 710.1 | 30.4% | — |
| 2018 | 843.7 | 36.1% | — |
| 2019 | 723.5 | 30.9% | — |
| 2020 | 941.7 | 40.2% | — |
| 2021 | 866.1 | 37.1% | — |
| 2022 | 738.1 | 31.6% | — |
| 2023 | 678.5 | 29.0% | — |
| 2024 | 808.3 | 34.5% | — |
| 2025 | 736.8 | 31.5% | — |
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 | Onshore Wind Turbine | WT | 266.8 | 266.8 | Dec 2014 | Operating | — | siemens SWT-2.3-108 |
Owner / operator
Operator: Portland General Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Portland General Electric Co | 100.0% | 267 MW |
Nearby plants
Within 80 km.
| Hopkins Ridge Wind | 157 MW | 14.9 km |
| Lower Snake Solar Generation BESS | — | 17.8 km |
| Little Goose | 810 MW | 18.1 km |
| Lower Snake River Wind Energy Project | 343 MW | 19.5 km |
| Marengo Wind Plant | 234 MW | 19.8 km |
| Twin Reservoirs | 2 MW | 40.9 km |