Haapavesi is a 154 MW biomass power station in Northern Ostrobothnia, Finland. It is operated by Kanteleen Voima Oy. Based on reported annual generation of 0 GWh, it can supply roughly 57 homes. It ranks #17 of 185 Finland power plants by installed capacity. In context, biomass supplies about 12.6% of Finland's electricity; the national grid averages 57 gCO₂/kWh (96.3% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1002321.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by Kanteleen Voima Oy.
This biomass plant burns organic material (wood, residues) to raise steam for a turbine. It sits in a subarctic (boreal) climate (Köppen Dfc) — Northern Hemisphere, latitude 64.1°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 135% 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: 98/100 — this site sits in the top 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.
The #2 largest biomass power plant of 39 in Finland by capacity.
Finland has 39 biomass power plants in this dataset, together about 2,180 MW of capacity.
Coordinates 64.1333, 25.3667 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
