Japan to Restart World’s Largest Nuclear Plant After Fukushima Shutdown

Japan is set to resume operations at the Kashiwazaki-Kariwa Nuclear Power Plant, the world’s largest nuclear facility, marking a major shift in its energy policy. This will be the first restart of the plant since the 2011 Fukushima nuclear disaster which led to a nationwide shutdown of nuclear reactors.

About Kashiwazaki-Kariwa Nuclear Power Plant

• Location: Kashiwazaki and Kariwa towns, Niigata Prefecture, on the coast of the Sea of Japan (Honshu Island)
• Installed Capacity: Nearly 8,200 MW (largest nuclear plant globally)
• Operator: Tokyo Electric Power Company (TEPCO)
• The plant consists of multiple reactors and plays a critical role in Japan’s power generation capacity.

Why the Restart Is Significant

• First operation since the Fukushima nuclear disaster
• Symbolises renewed trust in nuclear safety after stricter regulations
• Helps Japan cut carbon emissions and reduce fossil fuel imports
• Strengthens energy security amid rising global fuel prices

Japan’s Energy Challenge

Japan faces major energy constraints,

• It is the 5th-largest carbon dioxide emitter globally
• Nearly 70% of electricity in 2023 came from coal, gas, and oil
• Japan imports most of its fossil fuel needs
• Energy security remains a national priority

Before 2011, nuclear power produced around one-third of Japan’s electricity.

Nuclear Energy After Fukushima

Following the Fukushima disaster,

• All nuclear reactors were shut down
• Strict safety rules were introduced
• Public trust became a major concern

So far, 14 reactors, mainly in western and southern Japan, have resumed operations after meeting new safety standards.

Japan’s Long-Term Energy Plan

Japan is reshaping its energy mix,

• Renewables to become the top power source by 2040
• Nuclear power share targeted at 20% by 2040
• Nuclear contribution was only 5.6% in 2022
• Restarting Kashiwazaki-Kariwa is essential to achieving these goals.

Environmental and Economic Impact

• Reduces reliance on coal and gas
• Lowers carbon emissions
• Cuts fuel import costs
• Supports Japan’s climate commitments

Nuclear energy is seen as a stable, low-carbon baseload power source.

Key Takeaways

• Japan plans to restart the world’s largest nuclear plant
• Kashiwazaki-Kariwa has a capacity of ~8,200 MW
• Shut down since the 2011 Fukushima disaster
• Nuclear power to supply 20% of Japan’s energy by 2040
• Move supports clean energy and energy security goals

Question

Q. Japan is preparing to restart which nuclear power plant, the world’s largest by capacity?

A. Fukushima Daiichi
B. Kashiwazaki-Kariwa
C. Onagawa
D. Tokai