Japan Restarts the World’s Largest Nuclear Power Plant Amid Public Concerns

Web Editor

January 21, 2026

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Background on Kashiwazaki-Kariwa Nuclear Power Plant

The Kashiwazaki-Kariwa nuclear power plant in Japan, the world’s largest by capacity, resumed operations on Wednesday for the first time since the 2011 Fukushima disaster, despite ongoing public concerns.

Plant Capacity and Reactors

Initially, only one of the plant’s seven reactors was reactivated. The Kashiwazaki-Kariwa facility is the largest nuclear power plant globally in terms of production capacity.

Reactivation Process and Public Opinion

Tokyo Electric Power Company (Tepco) announced the restart, with operations commencing at 19:02 local time (10:02 GMT), according to Tepco spokesperson Tatsuya Matoba.

The governor of Niigata prefecture, where the plant is located, had previously approved the resumption despite a divided public opinion. A September survey by the prefecture revealed that 60% of residents opposed the restart, while 37% supported it.

Protests and Public Concerns

On Tuesday, several dozen protesters braved the cold to demonstrate near the plant’s entrance along the Japan Sea coast. One local resident, 73-year-old Yumiko Abe, expressed her frustration:

“Electricity for Tokyo is generated here, yet only the local residents are at risk. It makes no sense.”

Historical Context and Impact

Following the Fukushima disaster in March 2011, which involved a devastating earthquake, tsunami, and nuclear accident, Japan shut down all its nuclear reactors. The Kashiwazaki-Kariwa plant was among those affected and remained inactive until its recent restart.

Key Questions and Answers

  • What is the Kashiwazaki-Kariwa Nuclear Power Plant? It is the largest nuclear power plant in the world by capacity, located in Niigata Prefecture, Japan.
  • Why was the plant shut down in 2011? Following the Fukushima disaster, Japan shut down all its nuclear reactors for safety concerns.
  • When did the plant restart? The plant resumed operations on Wednesday, with one of its seven reactors activated.
  • What are public concerns regarding the restart? Despite approval from local authorities, a significant portion of the population remains concerned about potential risks to their health and safety.