Tokyo Electric Power Co. will postpone restarting its Niigata nuclear plant, according to a report from broadcaster NHK. The delay follows the discovery of an alarm system issue over the weekend. This marks another setback for the utility's efforts to bring offline reactors back online.

The restart has been a long-awaited goal for TEPCO, which has spent years on safety upgrades since the Fukushima disaster. Delays like this one reinforce public skepticism about nuclear power's reliability in Japan. The industry faces strict scrutiny from regulators before any reactor can operate again.

What comes next? TEPCO must now investigate and fix the alarm problem before seeking regulatory approval for a new restart date. This incident will likely be a key topic when Japan's nuclear safety authority reviews the plant's readiness. The timeline for returning the unit to service remains uncertain.