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TEPCO to Restart Reactor at World’s Largest Nuclear Plant in First Return Since Fukushima

The step supports Japan’s goal for nuclear to supply about one-fifth of electricity by 2040.

Overview

  • Tokyo Electric Power said it will remove control rods after 7pm local time on Jan 21 to start up one unit at the Kashiwazaki-Kariwa complex in Niigata.
  • Wednesday’s green light follows prior approvals from the Nuclear Regulation Authority and Niigata’s governor, marking TEPCO’s first reactor restart since 2011.
  • Only one of the site’s seven reactors is restarting, with TEPCO planning to ramp output to about 50% within a week and aiming for commercial operation in late February pending clearance.
  • Residents remain divided, with a September survey showing about 60% opposed, recent protests at the plant, and a petition of nearly 40,000 signatures citing seismic risks.
  • TEPCO highlights safety upgrades including a 15-metre tsunami wall and elevated backup power, while scrutiny has intensified after Chubu Electric’s seismic data falsification and a local alarm test failure.