Kashiwazaki-Kariwa

The world's largest nuclear power plant restarts.

December 22, 2025

7 reactors — combined 8.2 GW capacity

14 years — time since Fukushima meltdown

14 of 33 — operable Japanese plants now restarted

$68 billion — Japan's 2024 fossil fuel imports

What happened

On December 22, 2025, Niigata prefecture's assembly voted to allow Tokyo Electric Power Co (TEPCO) to restart the Kashiwazaki-Kariwa Nuclear Power Plant. It's the first TEPCO plant to restart since the 2011 Fukushima disaster.

The vote was a confidence motion in Governor Hideyo Hanazumi, who backed the restart. TEPCO is considering reactivating the first reactor on January 20, 2026.

The opposition

About 300 protesters rallied outside, holding signs reading "No Nukes" and "Support Fukushima."

"We know firsthand the risk of a nuclear accident and cannot dismiss it."
— Ayako Oga, 52, farmer and activist who fled Fukushima in 2011

Oga evacuated from within the 20km irradiated exclusion zone with 160,000 others. She still experiences PTSD-like symptoms.

Why restart

Prime Minister Sanae Takaichi backs nuclear restarts to reduce reliance on imported fossil fuels. Japan spent $68 billion on LNG and coal last year—one-tenth of total imports.

The first reactor alone would boost Tokyo's electricity supply by 2%.

The tension

Climate goals push toward nuclear. Fukushima's memory pushes back. Neither force is dishonest. Both are real.

This is what energy transition looks like: not a clean path, but competing traumas.

Source: Al Jazeera
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