“Iwanai hydraulic power electricity incorporated company ” was established only in Sapporo, Otaru and Hakodate in Meiji 38 without an electric light (thermal power generation time)
Iwanai hydroelectricity Ltd. was established in the west of the Mt.Iwanai in 1905. At that time, there were the only thermal power generation at the Sapporo Otaru,Hakodate. Also, there were a few hydroelectricity Ltd. all over the country. It was succeed that the light of hydro-power lit up .Water power generation was not suitable for Hokkaido, due to the freezing of the source of a river. But for the first time in Iwanai in Hokkaido
The water tank of the brick has equipped with the turbine remains now.