The Japanese utility Kansai Electric Power Co (Kepco) is likely to shut down the ageing Ohi 1-2 nuclear reactors (Fukui Prefecture, Japan) because of the new safety standards rising costs. Kepco also estimates that the overhaul works required to obtain the authorization to extend their operating life would be too expensive. However, the company has not taken any decision yet. It is in discussions with the local authorities and expects to take a final decision by the end of 2017.
The two 1,175 MW units have an average output of 1.18 TWh/year. They were put into service back in 1979 and are therefore approaching the 40-year age limit. In the wake of the 2011 Fukushima catastrophe, Japan has restricted the nuclear plants' operating lifespan to 40 years as a general rule. This lifespan can be extended to a maximum of 60 years with the Nuclear Regulation Authority's approval, but requires safety investments of up to Yen100bn per unit (US$894m).