Volume 124 (2004) Issue 8 Pages 727-732
This paper has been developed on the base of a presentation and its discussion made in the HEE (Technical Committee on History of Electrical Engineering) study meeting, in which authors showed their experiences in the construction work of pumped storage power stations in Japan. History study on these experiences will provide us with several important suggestions to understand the essence of engineering so that we will find the key to the successful technological innovation. This paper reviews the history and experiences of pumped storage power stations construction in Japan to analyze the key to the success in applying the innovative technology to practical engineering and to commercial plant construction, taking some actual cases into account. One of the most important suggestions is that “common sense” will sometimes be an obstacle to the successful innovation.