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Port Townsend Paper

Biomass power plant in Washington, United States of America. Approximate location 48.0931, -122.7958.

BiomassWashingtonUnited States of America

Port Townsend Paper is a 8 MW biomass power plant in Washington, United States of America. It is operated by Port Townsend Paper Co. Based on reported annual generation of 38 GWh, it can supply roughly 10,942 homes. It ranks #5007 of 9,833 United States of America power plants by installed capacity. Commissioned in 1985, it is around 41 years old — long-established. In context, biomass supplies about 1.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

8MW installed capacity
38GWh reported / yr
10,942homes powered
1985commissioned (~41 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0050544.

Reported generation trend

2013: 0 GWh20132014: 0 GWh20142015: 25 GWh20152016: 31 GWh20162017: 34 GWh20172018: 37 GWh20182019: 38 GWh201938 GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Port Townsend Paper Co.

Local climate & thermal context

This biomass plant burns organic material (wood, residues) to raise steam for a turbine. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 48.1°N — which shapes how much energy it can produce and how its output varies through the year.

10.0°Cannual mean temp
2,894heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
57 melevation

Monthly mean temperature

J: 5 °CJF: 6 °CFM: 7 °CMA: 9 °CAM: 12 °CMJ: 14 °CJJ: 16 °CJA: 16 °CAS: 14 °CSO: 10 °CON: 7 °CND: 5 °CD16 °C

Heating degree-days here run 18% 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: 60/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

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.

How it compares & nearby plants

The #76 largest biomass power plant of 153 in United States of America by capacity.

United States of America has 153 biomass power plants in this dataset, together about 5,123 MW of capacity.

Nearby power plants

Location

Coordinates 48.0931, -122.7958 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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