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Japan to restart world's biggest nuclear plant

This photo taken on December 2, 2025 shows Tokyo Electric Power Company's Kashiwazaki-Kariwa Nuclear Power Plant Unit 6 in Kashiwazaki, Niigata Prefecture. The world's biggest nuclear power plant was restarted January 21, 2026 for the first time since the
The operation to restart the Kashiwazaki-Kariwa plant were suspended last month

Japan will switch the world's largest nuclear power plant back on next week, after a glitch with an alarm forced the suspension of its first restart since the 2011 Fukushima disaster.

Takeyuki Inagaki, the head of the Kashiwazaki-Kariwa plant run by Tokyo Electric Power, told a press conference that they planned "to start up the reactor on February 9".

Tokyo Electric Power Co.'s (Tepco) Kashiwazaki Kariwa nuclear power station in Kashiwazaki City, Niigata Prefecture, Japan
Kashiwazaki-Kariwa was among 54 reactors shut after the 2011 earthquake and tsunami

The glitch was linked to the setting on an alarm and did not affect the safe operation of the plant, he said.

Operations to relaunch a reactor at the plant in Niigata province last month were suspended just hours into the process.

The facility had been offline since Japan pulled the plug on nuclear power after a colossal earthquake and tsunami sent three reactors at the Fukushima atomic plant into meltdown in 2011.


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Japan prepares to restart world's biggest nuclear plant