Europe’s most powerful nuclear reactor begins production in Finland

The Olkiluoto 3 is western Europe’s first new reactor in more than 15 years.

Finland’s much-delayed and costly new nuclear reactor, Europe’s most powerful by production capacity, has completed a test phase lasting over a year and started regular output (Lehtikuva/Antti Aimo-Koivisto/AP/PA)

Finland’s much-delayed and costly new nuclear reactor, Europe’s most powerful by production capacity, has completed a year-long test phase and started regular output, boosting the country’s electricity self-sufficiency.

The Olkiluoto 3 reactor, which has 1,600-megawatt capacity, was connected into the Finnish national power grid in March 2022 and began regular production on Sunday.