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Niigata's Kashiwazaki-Kariwa nuclear plant, world's largest, faced immediate suspension after a 14-year shutdown.

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Niigata province is the location of the Kashiwazaki-Kariwa nuclear power plant, the world's largest. Operated by Tokyo Electric Power Company (TEPCO), the plant has been largely offline since the 2011 Fukushima disaster, which triggered a nationwide shutdown of nuclear reactors in Japan. The plant is newsworthy due to recent attempts to restart operations after a 15-year shutdown. On Wednesday, operations to relaunch reactor number six began, but were suspended the following day due to an alarm during start-up procedures. Despite the alarm, TEPCO stated the reactor remained stable. The restart is controversial, with petitions citing concerns over seismic activity near the plant. The plant's status is significant as Japan grapples with its energy policy following Fukushima, balancing energy needs with public safety concerns and reliance on nuclear power.
Last updated: April 4, 2026