Japan’s Organization for Cross-regional Coordination of Transmission Operators (OCCTO) has approved the Chugoku–Kyushu interconnection plan, a major initiative aimed at strengthening electricity transmission capacity along the country’s west coast. The project is part of Japan’s broader effort to enhance grid reliability, integrate renewable energy sources, and ensure a more resilient national power network.
The proposed interconnection will improve the transfer capability between the Chugoku and Kyushu regions, enabling more efficient power sharing and balancing of supply and demand across western Japan. It will also support the growing integration of solar and wind power, which are rapidly expanding in Kyushu.
By enhancing transmission flexibility, the project is expected to reduce regional power imbalances, optimize generation resources, and contribute to Japan’s decarbonization goals. OCCTO’s approval marks a significant step forward in Japan’s long-term grid modernization strategy aimed at creating a more stable and sustainable electricity system.
Construction is anticipated to begin after detailed engineering and environmental assessments, with the interconnection expected to play a key role in improving grid stability and supporting the country’s clean energy transition.
