Olkiluoto Nuclear Power Plant

nuclear power plant in Eurajoki, Finland

Key facts

Official name: Olkiluodon ydinvoimalaitos
Country: Finland
Location: Eurajoki , Region of Satakunta
Status: Operational
Construction began: Unit 1: 1 February 1974 ( 1974-02-01 ) , Unit 2: 1 November 1975 ( 1975-11-01 ) , Unit 3: 12 August 2005 ( 2005-08-12 )
Commission date: Unit 1: 10 October 1979 ( 1979-10-10 ) , Unit 2: 10 July 1982 ( 1982-07-10 ) , Unit 3: 16 April 2023 ( 2023-04-16 )
Owner: Teollisuuden Voima Oyj (TVO)
Operator: TVO
Employees: 1000 (2021)
Reactor type: Units 1–2: BWR , Unit 3: PWR ( EPR )
Reactor supplier: Units 1–2: AB ASEA-ATOM , Unit 3: Areva S.A.
Cooling source

~20 min read

Article

The Olkiluoto Nuclear Power Plant (Finnish: Olkiluodon ydinvoimalaitos, Swedish: Olkiluoto kärnkraftverk) is one of Finland's two nuclear power plants, the other being the two-unit Loviisa Nuclear Power Plant. The plant is owned and operated by Teollisuuden Voima (TVO), and is located on Olkiluoto Island, on the shore of the Gulf of Bothnia, in the municipality of Eurajoki in western Finland, about 20 kilometres (12 mi) from the town of Rauma and about 50 kilometres (31 mi) from the city of Pori.

The Olkiluoto plant consists of two boiling water reactors (BWRs), each with a capacity of 890 MW, and one EPR type reactor (unit 3) with a capacity of 1,600 MW. This makes unit 3 currently the most powerful nuclear power plant unit in Europe and the third most powerful globally. Construction of unit 3 began in 2005. Commercial operation, originally scheduled for May 2009, began on 1 May 2023.