construction on the dam started in may 2000 but by may 2004 j-power and chubu electric announced they had changed the design of the project due to the concerns and protests of locals and groups. instead of the pumped-storage hydroelectric scheme, only the tokuyama dam would be constructed with a 153 mw conventional power station. subsequently, the sugihara dam and sugihara power plant were scrapped from the project. during construction, the long tokunoyama