Japan has restarted the world's largest nuclear power plant, the Kashiwazaki-Kariwa facility, located in the Niigata region. The Tokyo Electric Power Company (TEPCO) announced the restart of the No. 6 reactor, which has a capacity of 1,360 megawatts, at 2:00 p.m. (0500 GMT) on February 9, 2026, as reported by The Frontier Post. This marks the first restart of a TEPCO reactor since the 2011 Fukushima disaster, which led to a nationwide shutdown of nuclear plants following a massive earthquake and tsunami. The restart comes after a previous attempt in January was halted due to a 'minor glitch' involving an alarm system, as detailed by Bernama. The alarm, which sounded during control rod withdrawal, was found to be overly sensitive to changes in electric current, prompting a shutdown for further investigation.