Finnish Nuclear Reactors Overview
Olkiluoto 1
Current power
877
/ 890 MW
Teollisuuden Voima Oyj
Olkiluoto 2
Current power
740
/ 890 MW
Teollisuuden Voima Oyj
Olkiluoto 3
Current power
1,303
/ 1,600 MW
Teollisuuden Voima Oyj
Loviisa 1 & 2
Current power
926
/ 1,014 MW
Fortum Power and Heat Oy
Finnish nuclear power: current reactor status
Finland has five reactors in commercial operation at Olkiluoto and Loviisa. Olkiluoto's three reactors are shown individually using TVO data. Loviisa's two reactors are combined into one shared card.
Nuclear power in Finland
Olkiluoto in Eurajoki has three reactors: two boiling water reactors and the Olkiluoto 3 pressurized water reactor. Loviisa has two VVER-440 pressurized water reactors.
The Finnish view combines operator data from TVO with Fingrid's measurement of Finland's total nuclear generation. Nordic Nuclear Power is independent of both organizations.
Finnish Nuclear Reactors Overview
Olkiluoto
Olkiluoto nuclear power plant in Eurajoki operates three reactors. Olkiluoto 1 and 2 are boiling water reactors with a net output of 890 MW each. Olkiluoto 3 is an EPR pressurized water reactor with a net output of 1,600 MW.
Eurajoki, Satakunta, Finland
BWR (OL1–2), PWR/EPR (OL3)
Teollisuuden Voima Oyj (TVO)
Loviisa
Loviisa nuclear power plant operates two VVER-440 pressurized water reactors with a net output of 507 MW each. Because the real-time source used here does not split generation by unit, the plant's calculated total is shown as one combined card.
Loviisa, Uusimaa, Finland
Two pressurized water reactors (VVER-440)
Fortum Power and Heat Oy
Frequently Asked Questions About Finnish Nuclear Power
How many nuclear reactors operate in Finland?
Finland has five reactors in commercial operation: three at Olkiluoto and two at Loviisa.
How is Loviisa's output calculated?
Loviisa's combined output is calculated by subtracting TVO's current Olkiluoto 1–3 output from Fingrid's measurement of Finland's total nuclear generation.
Why are Loviisa 1 and 2 combined?
Fingrid's real-time series reports the national total rather than separate values for Loviisa's two reactors. A combined card avoids splitting the calculated value between units without supporting source data.
How often is the Finnish data updated?
Fingrid's nuclear generation total updates every three minutes. This service briefly caches the data to use the source responsibly.
Data Sources and Reliability
All power data presented on this dashboard comes from official data sources. Power data for Olkiluoto 1–3 comes directly from Teollisuuden Voima Oyj (TVO), while Finland's total nuclear generation comes from Fingrid. Loviisa's combined value is calculated by subtracting Olkiluoto 1–3 from Fingrid's total. This ensures accurate, up-to-date information about Finland's nuclear power generation.
Data sources include Teollisuuden Voima Oyj (TVO) and Fingrid Open Data, providing comprehensive coverage of all Finnish nuclear reactors. Fingrid data is used under CC BY 4.0, and the Loviisa calculation is a modification of the source data made by Nordic Nuclear Power.