Kashiwazaki-Kariwa Nuclear Plant Restart Suspended
Analysis based on 6 articles · First reported Jan 22, 2026 · Last updated Jan 23, 2026
The suspension of the Kashiwazaki-Kariwa Nuclear Power Plant restart creates uncertainty for Tokyo Electric Power Company's operational and financial outlook, potentially impacting its stock price. For Japan, this delay hinders its strategy to reduce reliance on fossil fuels and achieve carbon neutrality, which could affect energy markets and related industries.
The restart of a reactor at the Kashiwazaki-Kariwa Nuclear Power Plant, operated by Tokyo Electric Power Company, was suspended just hours after it began due to a monitoring alarm and technical issues related to control rods. This plant, the world's largest by potential capacity, had been offline since the 2011 Fukushima disaster. The Japan — Nuclear Regulation Authority had given the final approval for the restart, which was part of Japan's broader strategy to revive atomic energy to reduce fossil fuel dependence and achieve carbon neutrality by 2050. Public opinion in Japan — Ōita Prefecture, where the plant is located, is divided, with many residents opposing the restart due to safety concerns, especially given the plant's location on an active seismic fault zone. Tokyo Electric Power Company officials confirmed the reactor remains stable and there is no radioactive impact outside, but the timeline for resolving the issue and resuming operations is currently unknown.
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