Vuosaari power station is a 648 MW coal power station in , Finland. It is operated by Helen Oy [100%]. Based on its capacity (estimated), it can supply roughly 811k homes (estimated). It ranks #5 of 203 Finland power plants by installed capacity. Commissioned in 2015, it is around 11 years old — relatively modern. In context, coal supplies about 0.2% 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 GEM_coa_vuosaari_finla.
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 · L100000101852; fuel: GEM GCPT
In context: how this plant compares
At 648 MW, Vuosaari power station is well above the median coal plant in Finland (230 MW). Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Finland coal capacity
- 15.4% of 4,217 MW across 13 plants in this dataset
- Age among peers
- 12 of 13 dated coal plants in Finland are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Finland
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Helen Oy [100%].
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 60.2°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 93% 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: 92/100 — this site sits in the top 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 corrosive environment (estimated ISO 9223 class C4 — High), with marine corrosion 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 #2 largest coal power plant of 13 in Finland by capacity.
Finland has 13 coal power plants in this dataset, together about 4,217 MW of capacity.
Nearby power plants
- Vuosaari A · Gas · 163 MW · Uusimaa
- Vuosaari B · Gas · 485 MW · Uusimaa
- Hanasaari B · Coal · 212 MW · Uusimaa
- Kellosaari · Oil · 120 MW · Uusimaa
- Salmisaari B · Coal · 163 MW · Uusimaa
- Martinlaakso · Gas · 171.7 MW · Uusimaa
Location
Coordinates 60.22032, 25.16966 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Vuosaari power station?
Vuosaari power station is a 648 MW coal power plant in , Finland, commissioned in 2015.
Who operates Vuosaari power station?
Vuosaari power station is operated by Helen Oy [100%].