Sumitomo Group
with electric distribution companies established under similar state control. In 1943 (Showa 18) it changed its name to the present Sumitomo Group of electric power companies. Japan Electric Generation and Transmission Company took over the development of the improving Central Shikoku Electric Power Company. In 1949 (Showa 24), upstream of Ohashi Dam, as well as Nagasawa Dam (5.2MW), in 1950 (Showa 25) at the water diversion's lowest point the Fourth Diverted Water Power Station (8.1MW) was completed.