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TEPCO Delays Kashiwazaki-Kariwa Nuclear Restart After Leak

3/17/2026

Summary

Story summary

Tokyo Electric Power Company Holdings, Incorporated (TEPCO) announced Kashiwazaki-Kariwa nuclear power plant will delay commercial operations after a No. 6 reactor leak, postponing March 18 restart.
The No. 6 reactor remains operational with no abnormalities, but TEPCO will run at 20% during the investigation and may take a week to restore full output.
Kashiwazaki-Kariwa is the largest nuclear facility globally and was the first to restart since Fukushima in 2011.

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Story summary

Tokyo Electric Power Company Holdings, Incorporated (TEPCO) announced Kashiwazaki-Kariwa nuclear power plant will delay commercial operations after a No. 6 reactor leak, postponing March 18 restart.
The No. 6 reactor remains operational with no abnormalities, but TEPCO will run at 20% during the investigation and may take a week to restore full output.
Kashiwazaki-Kariwa is the largest nuclear facility globally and was the first to restart since Fukushima in 2011.