The operator of Unit III of the Finnish nuclear power plant Olkiluoto (OL3) – Teollisuuden Voima Oyj (TVO) received permission to initially bring the reactor to a minimum controllable power level and perform the necessary tests. The permit was issued by the Finnish Regulatory Authority (STUK) after successful fulfillment of preconditions related to the confirmation of the readiness of the unit for initial power uprate. It is envisaged that a further increase in power over 5%, 30% and 60%, respectively, will take place after the issuance of the necessary permits by STUK. The unit has an EPR (European Pressurized Reactor) reactor with a maximum electrical power of 1600 MW.