Turku Energia has worked perseveringly to replace fossil fuels with renewable fuels. At the end of 2020, 80 per cent (2019: 61 per cent) of district heat was generated with renewable fuels. The aim is to increase the share of renewables to 85 per cent by the end of 2023.
Supply and specific emissions 2020
Origin of district heat
We are developing our energy supply via our own peak- and reserve-power plants as well as via our affiliate companies. Significant steps were taken during the year to produce district heat without coal. Turku Energia's affiliated company Turun Seudun Energiantuotanto Oy (TSE) had a built-in connection with the multi-fuel unit at the Naantali power station (a flue gas condenser), which intensifies energy generation at the power station without increasing the use of fuels.
Most district heat is produced at the Naantali power station, Oriketo biothermal plant, and Kakola heat pump plant. During peak-loading times during freezing winters and when there are disturbances in the operation of the base generation plant, pellet and oil-fired heating plants are used as well. In addition, Turku Energia procures about five per cent of the total district heat requirement by procuring heat from its co-operation partners and customers that is generated through the use of biofuels and waste heat.
Origin of electrical energy
The distribution of origins was calculated on the basis of the national residual mix reported by the Finnish Energy Authority and the guarantees of origin obtained by Turku Energia. The national residual mix for 2020 has not yet been published, this information will be updated in 2021. This describes the situation in 2019.
The distribution of origins was calculated on the basis of the national residual mix reported by the Finnish Energy Authority and the guarantees of origin obtained by Turku Energia.
The mix is calculated on the basis of the Finnish energy balance residual mix and the guarantees of origin obtained by Turku Energia in accordance with the Energy Authority's guidelines. The residual mix contains electricity generated by fossil fuels and nuclear power as well as its share of renewal electricity-based electricity, which has not been sold separately with guarantees of origin.
CO2 emissions from electricity sold by Turku Energia were on average 95 g/kWh in 2019. The amount of nuclear fuel used in Finland in 2019 was on average 0.52 mg/kWh.