Japan’s Tohoku Electric Power is planning to restart Unit 2 at its Onagawa nuclear station later this year after additional safety construction work delayed the process.

The three-unit station, in Miyagi Prefecture, northeastern Japan, was hit by the March 2011 earthquake and tsunami that resulted in meltdowns at Fukushima-Daiichi to the south, but survived with its cooling system intact, saving its reactors from the threat of meltdowns.

Tohoku Electric received a de facto regulatory approval to restart Unit 2 in 2020, but has seen a delay in the completion of safety constructions that needed to be introduced under post-Fukushima rules. It has now said it plans to restart the plant “around September”.