Abstract
Japan modernization was very rapidly promoted about 200 years ago. Before that time Japan had national isolation policy but the emperor at that time and the worrier who led society realized that Japan should develop quickly to compete with the US and European countries.
Compared with other power stations, the construction of the Keage Hydroelectric Power Station was somewhat delayed, but it was achieved during the development of the Biwako Sosui (Lake Biwa Canal) Project and was the first hydroelectric power generation station for public service in Japan. We can see the history of the development of technology in the world by looking at Keage as it sequentially adopted new technology during its construction.
