Tucannon River Wind Farm — United States of America
Wind power plant in Washington, United States of America. Approximate location 46.4348, -118.025.
WindWashingtonUnited States of America
Tucannon River Wind Farm is a 266.8 MW wind power station in Washington, United States of America. It is operated by Portland General Electric Co. Based on reported annual generation of 724 GWh, it can supply roughly 207k homes. It ranks #1683 of 10,884 United States of America power plants by installed capacity. Commissioned in 2015, it is around 11 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 10.3% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0058571.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000907525; fuel: WRI GPPD
In context: how this plant compares
At 266.8 MW, Tucannon River Wind Farm is well above the median wind plant in United States of America (67.7 MW). Wind turbines convert moving air into electricity; output is variable and site-dependent, and modern turbines deliver some of the lowest-cost new generation on many grids.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Load factor
- 31%, from 724 GWh of reported generation, in line with the 30% median for 1120 wind plants in United States of America
- Generation trend
- 758 GWh in 2015 and 724 GWh in 2019 (−5%)
- Highest and lowest year
- 2016: 869 GWh; 2017: 710 GWh
- Share of United States of America wind capacity
- 0.3% of 104,873 MW across 1,139 plants in this dataset
- Age among peers
- 822 of 1,139 dated wind plants in United States of America are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Portland General Electric Co. All plants by this company →
Local climate & thermal context
This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a hot-summer Mediterranean climate (Köppen Csa) — Northern Hemisphere, latitude 46.4°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 22% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 62/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #55 largest wind power plant of 1139 in United States of America by capacity.
United States of America has 1139 wind power plants in this dataset, together about 104,873 MW of capacity.
Nearby power plants
- Hopkins Ridge Wind · Wind · 149.4 MW · Washington
- Little Goose · Hydro · 810 MW · Washington
- Lower Snake River Wind Energy Project · Wind · 342.7 MW · Washington
- Marengo Wind Plant · Wind · 234 MW · Washington
- Lower Monumental · Hydro · 810 MW · Washington
- Twin Reservoirs · Hydro · 2.2 MW · Washington
Location
Coordinates 46.4348, -118.025 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Tucannon River Wind Farm?
Tucannon River Wind Farm is a 266.8 MW wind power plant in Washington, United States of America, commissioned in 2015.
How much electricity does Tucannon River Wind Farm generate?
Tucannon River Wind Farm generates about 724 GWh of electricity per year.
Who operates Tucannon River Wind Farm?
Tucannon River Wind Farm is operated by Portland General Electric Co.