◆ Unavoidable passage through rocky areas / The need to regulate fishing rights
Image of the current state of the ocean floor
Send renewable electricity from the Hokkaido and Tohoku regions, where large amounts of renewable energy such as offshore wind power generation are being introduced, to Tokyo, a large electricity consumer. Review of the ongoing DC Power Transmission submarine development plan. Although the Wide Area System Development Committee of the Electric Power Industry Promotion Organization (Wide Area Organization) points out that it is technically possible to secure a route for laying submarine power cables, coordination is needed. with fishing rights owners along that route. There are challenges to making this possible, including the presence of seas and rocky areas that could damage the cable.
◇ Direct undersea power transmission from Hokkaido, which has steep underground terrain, is being considered for development with a target of 2030. At the meeting of the large-area system development committee held in November Last year, the results of field surveys carried out along the cable laying route in the waters between Hokkaido and Niigata Prefecture were presented. The route, which stretches from Shishi, the southern tip of Hokkaido, to Oshima, has steep canyon-like terrain and about 12% of the seabed's geology is rocky.
