Only one nuclear reactor is currently operating in Japan (see chart), after the Tokyo Electric Power Company took a reactor at the Kashiwazaki-Kariwa power station in Niigata Prefecture offline for routine maintenance on 26 March. None of the reactors closed after an earthquake and tsunami struck the Fukushima Daiichi plant last March has yet reopened, although some have passed official 'stress tests' showing that they could withstand similar disasters.
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