Japan Approves Restart of World’s Largest Nuclear Plant, Kashiwazaki-Kariwa
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Japan is poised to reactivate its nuclear energy program with the local approval of the kashiwazaki-Kariwa Nuclear Power Plant, the world’s largest, marking a notable shift in energy policy for the first time since the 2011 fukushima disaster. The decision, made on Friday, signals a renewed commitment to nuclear power as the nation grapples with energy security and ambitious climate goals.
A Nation Reconsiders Nuclear Energy
the governor of Niigata province, Hideyo Hanazumi, announced his approval for the plant’s resumption, though final authorization still rests with Japan’s nuclear regulator. The kashiwazaki-Kariwa plant, taken offline following the devastating earthquake and tsunami that triggered the Fukushima meltdown, represents a pivotal moment in Japan’s energy future. For over a decade, Japan largely eschewed nuclear power, but a combination of factors – including rising fossil fuel costs and concerns about energy independence – is driving a reassessment.
Extensive safety upgrades have been implemented at the plant, including the construction of a tsunami wall and enhanced power backup systems located on higher ground, to mitigate the risks that led to the 2011 disaster.
Before the 2011 earthquake and tsunami, which claimed approximately 18,000 lives, nuclear power accounted for roughly one-third of Japan’s electricity generation, with fossil fuels filling the remaining gap. The nation’s energy landscape has dramatically shifted since then, but the economic and strategic imperatives for nuclear power are once again gaining prominence.
Political Shifts and Energy Policy
A senior official noted that Prime Minister Sanae Takaichi, who assumed office last month, is prioritizing the restart of nuclear power more aggressively than her predecessors. “Takaichi places nuclear power capacity build-out and energy self-sufficiency more centrally in energy policy, without much emphasis on renewables expansion,” the official stated. Kansai Electric, another major power company, announced in July its initial steps toward constructing the nation’s first new nuclear reactor since the Fukushima disaster.
The Challenge of Renewable Energy and Fossil fuel Dependence
Despite the push for nuclear energy,Japan also aims to become a leader in renewable energy. Tokyo intends to make renewables its primary power source by 2040, with nuclear power contributing around 20% of the energy supply by the fiscal year beginning in April 2040 – a significant increase from the 8.5% share in 2023/24. Ambitious targets have been set to increase wind power’s contribution to between four and eight percent by the 2040 fiscal year, up from approximately one percent currently.
However, the transition to renewable energy is not without its challenges. Rising costs are impacting the viability of wind power projects, as evidenced by Mitsubishi’s withdrawal from three key projects at the end of August, citing profitability concerns. Currently, nearly 70% of Japan’s power needs are met by fossil fuels – coal, gas, and oil – almost all of which must be imported at a daily cost of around $500 million.
The Long Road to Fukushima Decommissioning
Japan continues to grapple with the immense task of decommissioning the Fukushima Daiichi Nuclear Power Plant, a project expected to span decades. In August, technicians deployed remote-controlled robots into one of the damaged reactor buildings to begin preparations for removing radioactive debris. The process is fraught with difficulty due to dangerously high radiation levels, making the removal of melted fuel and other contaminated materials exceptionally challenging.
As Japan cautiously steps back into the realm of nuclear energy, the lessons of Fukushima remain paramount. The restart of Kashiwazaki-Kariwa represents not just a shift in energy policy, but a test of the nation’s commitment to safety, innovation, and a sustainable energy future.
© 2025 AFP
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