The Olkiluoto Nuclear Power Plant began operations in Eurajoki, Satakunta, Finland.

The Olkiluoto Nuclear Power Plant 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.

Eurajoki is a municipality of Finland located in the region of Satakunta in the province of Western Finland. The municipality has a population of 9,000 and covers an area of 1,504.96 square kilometres (581.07 sq mi) of which 298.39 km² (115.21 sq mi) is water. The population density is 17.48 inhabitants per square kilometre (45.3/sq mi).

October 10 is the 283rd day of the year in the Gregorian calendar; 82 days remain until the end of the year.