TEPCO Restarts Kashiwazaki Kariwa Reactor No. 6 in Historic Return to Nuclear Operations
Tokyo Electric Power successfully restarted its first reactor since the Fukushima disaster. The move signals a major shift in national energy policy for Japan.
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Tokyo Electric Power Company Holdings Inc successfully restarted reactor No. 6 at the Kashiwazaki-Kariwa nuclear power plant on January 21, 2026, marking a significant milestone for Japan 
JP. This event represents the utility's first reactor restart since the 2011 Fukushima Daiichi disaster. The 1.36-gigawatt (GW) reactor is expected to begin commercial operation by the end of February 2026, though the initial restart was delayed by one day from January 20 to investigate an alarm malfunction that was later found to involve equipment functioning normally.
JP. This event represents the utility's first reactor restart since the 2011 Fukushima Daiichi disaster. The 1.36-gigawatt (GW) reactor is expected to begin commercial operation by the end of February 2026, though the initial restart was delayed by one day from January 20 to investigate an alarm malfunction that was later found to involve equipment functioning normally.
