The Olkiluoto 3 EPR, of Franco-German design, will produce 14% of the country's electricity alone. The start-up took place on Sunday, April 16, 2023.
The end of a project that was 13 years late, marked by many technical problems and additional costs. The discovery of several cracks in the turbine island forced the operator TVO to shut down the 1,600-megawatt reactor, which was running at full capacity for the first time.