Port Westward — United States of America
Gas power plant in Oregon, United States of America. Approximate location 46.1789, -123.172.
GasOregonUnited States of AmericaCCGT · HRSG
Port Westward is a 483 MW gas power station in Oregon, United States of America. It is operated by Portland General Electric Co. Based on reported annual generation of 2,738 GWh, it can supply roughly 782k homes. It ranks #1259 of 10,884 United States of America power plants by installed capacity. Commissioned in 2007, it is around 19 years old — relatively modern. In context, gas supplies about 40.0% 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 USA0056227.
Data status
Known data
Calculated from dataset
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 · L100000402208; fuel: WRI GPPD
In context: how this plant compares
At 483 MW, Port Westward is well above the median gas plant in United States of America (121.2 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Load factor
- 65%, from 2,738 GWh of reported generation; the median for 1622 gas plants in United States of America that report generation is 26%
- Generation trend
- 2,384 GWh in 2013 and 2,738 GWh in 2019 (+15%)
- Highest and lowest year
- 2019: 2,738 GWh; 2014: 1,943 GWh
- Share of United States of America gas capacity
- less than 0.1% of 789,950 MW across 2,165 plants in this dataset
- Age among peers
- 1,380 of 1,973 dated gas 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 gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 46.2°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 19% 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: 61/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).
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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), 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 #612 largest gas power plant of 2165 in United States of America by capacity.
United States of America has 2165 gas power plants in this dataset, together about 789,950 MW of capacity.
Nearby power plants
- Port Westward Unit 2 · Gas · 225.6 MW · Oregon
- Beaver · Gas · 586 MW · Oregon
- Mint Farm Generating Station · Gas · 319 MW · Washington
- Nippon Dynawave Packaging Longview WA · Waste · 62.4 MW · Washington
- Alden Bailey Power Plant · Gas · 10.9 MW · Washington
- Georgia-Pacific Wauna Mill · Biomass · 39.8 MW · Washington
Location
Coordinates 46.1789, -123.172 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Port Westward?
Port Westward is a 483 MW gas power plant in Oregon, United States of America, commissioned in 2007.
How much electricity does Port Westward generate?
Port Westward generates about 2,738 GWh of electricity per year.
Who operates Port Westward?
Port Westward is operated by Portland General Electric Co.