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Clearwater Paper IPP Lewiston

Biomass power plant in Idaho, United States of America. Approximate location 46.4231, -116.9764.

BiomassIdahoUnited States of America

Clearwater Paper IPP Lewiston is a 114 MW biomass power station in Idaho, United States of America. It is operated by Clearwater Paper Corporation. Based on reported annual generation of 413 GWh, it can supply roughly 118,000 homes. It ranks #1792 of 9,833 United States of America power plants by installed capacity. Commissioned in 1983, it is around 43 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).

114MW installed capacity
413GWh reported / yr
118,000homes powered
1983commissioned (~43 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0050637.

Reported generation trend

2013: 419 GWh20132014: 380 GWh20142015: 405 GWh20152016: 417 GWh20162017: 347 GWh20172018: 368 GWh20182019: 413 GWh2019419 GWh

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

Owner

Operated by Clearwater Paper Corporation. All plants by this company →

Local climate & thermal context

This biomass plant burns organic material (wood, residues) to raise steam for a turbine. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 46.4°N — which shapes how much energy it can produce and how its output varies through the year.

10.7°Cannual mean temp
2,896heating degree-days (base 18°C)
239cooling degree-days (base 18°C)
497 melevation

Monthly mean temperature

J: 1 °CJF: 3 °CFM: 7 °CMA: 10 °CAM: 14 °CMJ: 18 °CJJ: 22 °CJA: 22 °CAS: 16 °CSO: 10 °CON: 5 °CND: 1 °CD22 °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 #7 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 46.4231, -116.9764 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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