1949

Sumitomo Densetsu Co.,Ltd. operates as a construction company in Japan, Indonesia, Thailand, Cambodia, Myanmar, the Philippines, China, and Malaysia. It constructs overhead and underground power transmission, electrical substations, and electrical power distribution systems; and constructs interconnected systems to supply electricity from new energy facilities, including photovoltaic, wind, and hydroelectric power stations. The company also engages in the construction of photovoltaic, redox flow battery, and biomass power-generating systems; provision of engineering services for various systems, such as electrical work and electrical instrumentation in factories and plants; and establishment of facility management system and building energy management and automation systems.