Closed-loop system would inject water from surface for underground heating
Mitsui Fudosan and its partners have drilled a well for their demonstration at this site in Kagoshima prefecture. (Mitsui Fudosan)
MOE SAITO and MASAMITSU ITO
October 14, 2026 06:40 JST
TOKYO/KAGOSHIMA, Japan -- Property developer Mitsui Fudosan looks to achieve Japan's first commercial deployment of a next-generation geothermal system that can be introduced in areas where conventional projects have not been feasible.