The "strategic roadmap", which was revised by the Ministerial Conference on Nuclear Power in December 2022, stipulates a plan to perform conceptual design and R&D of a demonstration sodium-cooled fast reactor between fiscal 2024 and fiscal 2028, and to make a decision to start the basic design work of the demonstration reactor and the licensing phase around fiscal 2028.
In July 2023, Mitsubishi Heavy Industries, Ltd. was selected as the core company to develop the demonstration reactor. Mitsubishi Heavy Industries, Ltd. has been working on the development of fast reactors to reduce radioactive waste and realize a future that does not depend on fossil fuels, as the core company to undertake the development of fast reactors in Japan.
