US EditionJapan restarts world's biggest nuclear plant again
TEPCO adjusted a sensitive alarm causing an earlier halt and will gradually increase output aiming for commercial operation by March 18 at the world’s largest nuclear plant.
- On February 9, 2026, Tokyo Electric Power Company switched on one reactor at the Kashiwazaki-Kariwa nuclear power plant, the world's biggest by potential capacity.
- A monitoring alarm triggered the January suspension when an electrical problem in the control-panel used for control rods halted Tepco's restart on January 21, but investigators found the inverter was not broken and adjusted the alarm settings.
- At 2:00 pm local time , the restarted reactor, equipped with 205 control rods, reached criticality, starting a controlled, self-sustaining fission reaction.
- With regulator approval secured, Tepco said it will gradually increase power aiming for March 18, 2026 commercial operations while demonstrating TEPCO's safety commitment.
- Amid a national push to cut emissions and secure power, the Japanese government re-embraces atomic energy while seven groups filed a petition with nearly 40,000 signatories and a Niigata prefecture survey found around 60 percent oppose.
56 Articles
56 Articles
The world's largest nuclear power plant will try to start for the second time: EADaily
EADaily, February 9th, 2026. At the Kashiwazaki-Kariwa NPP, they will try to start the power unit on the second attempt. The first one ended with a failure in the electrical system of the equipment controlling the rods. They are trying to start the nuclear power plant after almost 14 years of downtime — after the Fukushima disaster.
Malay Mail
AlKhaleej TodayGlitch fixed, debate continues: Japan flips the switch again on world’s largest nuclear plant amid public unease
TOKYO, Feb 9 — Japan switched on the world’s biggest nuclear power plant again on Monday, its operator said, after an earlier attempt was quickly suspended due to a minor glitch.A problem with a monitoring alarm in January forced the suspension of its first restart since the 2011 Fukushima disaster.The Kashiwazaki-Kariwa plant in the Niigata region restarted at 2:00 pm (0500 GMT), the Tokyo Electric Power Company (Tepco) said in a statement.The …
TEPCO restarts nuclear reactor after determining cause of alarm trouble
Tokyo Electric Power Company Holdings Inc. restarted a reactor at its seven-unit nuclear power plant in Niigata Prefecture, northwest of Tokyo, on Monday after determining the cause of an alarm that halted the facility last month.
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