Home > Our company > What’s new > FY2025 > Judgments Issued in the Appeal Trials of the Lawsuit Seeking an Injunction to Halt Operation of Genkai Nuclear Power Plant Units 3 and 4, and of the Lawsuit on Action to Revoke the Units’ Permission for a Change in Reactor Installation (Administrative Lawsuit) - Japanese Government and Our Company have won their cases -

What’s new

January 20, 2026
Kyushu Electric Power Co., Inc.

Judgments Issued in the Appeal Trials of the Lawsuit Seeking an Injunction to Halt Operation of Genkai Nuclear Power Plant Units 3 and 4, and of the Lawsuit on Action to Revoke the Units’ Permission for a Change in Reactor Installation (Administrative Lawsuit) - Japanese Government and Our Company have won their cases -

 Today, at the Fukuoka High Court, a judgment was issued as follows, dismissing the appeals in the above-mentioned lawsuits. We believe this judgment reflects the fact that the court accepted the arguments of Japanese government and our company.
 Moving forward, we will continue to proactively and continuously pursue further improvements in safety and reliability, ensuring the utmost safety of our nuclear power plant.

1. Appeal trial in the lawsuit seeking an injunction to halt operation

 This case concerns a request to enjoin the operation of Genkai Nuclear Power Plant Units 3 and 4. Dissatisfied with the Saga District Court judgment dismissing that request (dated March 12, 2021), an appeal was filed on March 25, 2021.
 We have argued that, at the Genkai Nuclear Power Plant, we have strengthened safety measures based on the concept of multiple layers of protection, and that safety is sufficiently ensured through appropriate evaluations of the effects of natural phenomena such as earthquakes and volcanic activity. We have also stated that, in preparation for any contingency, we have implemented nuclear emergency preparedness measures in cooperation with the Japanese government and local authorities. For these reasons, we have maintained that there is no concrete danger of a serious accident occurring that would infringe the appellants’ personal rights.
 Today, the Fukuoka High Court dismissed the appeal, finding that there is no specific risk of a serious accident occurring at the Genkai Nuclear Power Plant.

2. Appeal trial in the administrative lawsuit

 This case concerns a request to revoke the permission granted for a change to the reactor installation for Genkai Nuclear Power Plant Units 3 and 4 (dated January 18, 2017). Dissatisfied with the Saga District Court judgment dismissing that request (dated March 12, 2021), an appeal was filed with the Fukuoka High Court on March 25, 2021.
 We have continued to participate in the lawsuit, as in the first-instance proceedings, and have argued that there is nothing unlawful about the permission for a change to the reactor installation at the Genkai Nuclear Power Plant, and that the original judgment is appropriate.
 Today, the Fukuoka High Court dismissed the appeal, finding that the review of conformity with the new regulatory standards is not unreasonable, that the disposition is lawful, and that safety is ensured.