Finland - World Nuclear Performance Report
Finland has two nuclear power plants: Loviisa, a two-unit VVER-440 plant, located 80 km east of Helsinki; and Olkiluoto, about 220 km northwest of the capital, with twin
BWR units and an EPR.
In February 2023 the Finnish government approved Fortum’s operating lifetime extension request for an additional 20-year term, which would extend the operation of Loviisa 1&2 until the end of 2050. The units started up in 1977 and 1980, respectively. In May 2024 Fortum awarded a contract to Doosan Škoda Power to refurbish the low-pressure turbines at Loviisa as part of its
modernization programme.
Teollisuuden Voima Oyj (TVO) is preparing to extend the operational lifetimes and uprate units 1&2 at its Olkiluoto plant. In January 2024 it submitted an environmental impact assessment to the Ministry of Economic Affairs and Employment. In April 2025 TVO signed a €75 million loan agreement with the Nordic Investment Bank to finance the upgrade work.
Fortum launched a feasibility study in October 2022 to explore the possibility of new nuclear in Finland and Sweden, examining different large and small modular reactor designs together with vendors. In March 2025 it announced that it would continue to collaborate with EDF (EPR), Westinghouse-Hyundai (AP1000) and GEHitachi (BWRX-300). In June 2025 Fortum signed early
work agreements with EDF and Westinghouse-Hyundai regarding the potential deployment of their respective reactor designs.
Electricity generation by age of reactor
