Prolonged blackout at ZNPP could lead to Fukushima scenario - Guardian Due to the absence of external power for more than 72 hours, emergency generators at Zaporizhzhia NPP are operating at maximum capacity. Uncontrolled heating of the reactors is possible, comparable to the Fukushima scenario. 2 409 15 Previously in trend: Russia’s occupation of ZNPP power fluctuations at nuclear power plants