Origin of heat 2025
Vaasan Sähkö’s district heating is produced with over 80 % renewable energy sources and waste energy. Our goal is to phase out all fossil fuels by the end of the 2020s.
Energy Sources 2025
In 2025, the energy sources for district heating supplied to our customers were distributed as follows:
| Energy sources | GWh | % |
| Non-recyclable municipal waste | 352,5 | 49,5 |
| Electricity | 157 | 22,0 |
| Biomass | 76,6 | 10,7 |
| Waste heat recovery | 66,5 | 9,3 |
| Heat pumps | 47,2 | 6,6 |
| Peat | 6,8 | 1,0 |
| Oil | 5,5 | 0,8 |
| Coal | 0,5 | 0,1 |
| Total | 712,4 | 100 |
The specific emissions of district heating production were 74,5 g/kWh in 2025 (using the consumption-based method).
The excise tax paid on the light fuel oil used for district heating production amounted to a total of 181 042 € (VAT 0 %).