The impending reactivation of reactors shut down following the 2011 nuclear crisis has raised a difficult question: Who will take responsibility for the decision?

On Wednesday, the Nuclear Regulation Authority effectively finished screening the two reactors at the Sendai plant in Kyushu, certifying they meet the new safety standards adopted after the Fukushima meltdowns.

Once they go online, likely in the fall, they will be the only reactors in operation in the nation.