Wynoochee
Grays Harbor County, Washington · EIA plant ID 7127 · Operator: City of Tacoma - (WA)
Nameplate13MWSummer 16 MW
Generators1in service
Net generation23GWh12 mo to Dec 2025
Capacity factor17%hydro units, summer MW
Heat rate—thermal plants only
First online1994
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), hydro 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) |
|---|---|---|---|
| 2001 | 26.5 | 19.7% | — |
| 2002 | 24.3 | 18.1% | — |
| 2003 | 43.1 | 32.1% | — |
| 2004 | 28.2 | 20.9% | — |
| 2005 | 22.3 | 16.7% | — |
| 2006 | 33.5 | 25.0% | — |
| 2007 | 35.5 | 26.5% | — |
| 2008 | 25.4 | 18.9% | — |
| 2009 | 5.2 | 3.9% | — |
| 2010 | 36.3 | 26.8% | — |
| 2011 | 35.7 | 26.3% | — |
| 2012 | 38.1 | 28.0% | — |
| 2013 | 24.4 | 18.0% | — |
| 2014 | 14.3 | 10.5% | — |
| 2015 | 12.7 | 9.3% | — |
| 2016 | 37.2 | 27.3% | — |
| 2017 | 34.1 | 25.1% | — |
| 2018 | 26.1 | 19.2% | — |
| 2019 | 13.7 | 10.1% | — |
| 2020 | 29.8 | 21.9% | — |
| 2021 | 35 | 25.8% | — |
| 2022 | 23.6 | 17.4% | — |
| 2023 | 26.4 | 19.4% | — |
| 2024 | 30.8 | 22.7% | — |
| 2025 | 22.5 | 16.6% | — |
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 | Conventional Hydroelectric | HY | 12.8 | 15.5 | Jan 1994 | Operating | — | coming soon |
Owner / operator
Operator: City of Tacoma - (WA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Tacoma - (WA) | 100.0% | 13 MW |
Nearby plants
Within 80 km.
| Cushman 1 | 50 MW | 28.8 km |
| Cushman 2 | 85 MW | 33.5 km |
| Lilliwaup Falls Generating | 1 MW | 38.1 km |
| Grays Harbor Energy Facility | 715 MW | 47.2 km |
| Sierra Pacific Aberdeen | 18 MW | 47.6 km |
| Cosmo Specialty Fibers Plant | 15 MW | 49.4 km |