Nowadays people praise the Japanese 'Miracle' would wide. They are eager to find the reason why Japan achieved such drastic economical development. The present paper how that Japanese economical 'success' is not a special event but an usual historical process. Japan was not a third world country even before World War I, and Japan utilized this potential power for it economical development after World War II. This opinion is coroborated by the discussion concerning the institutionalization of Japanese electric technology in Meiji Period. Japan was able to organize higher technological education system, research institutes and academic societies before the beginning of this century. Japan also had developed electric power supply system before World War I. These system functioned well indeed. This will be attested by two indicators: the amount of the electricity supplied and the time lag for technology transfer. I shall conclude that there are two indicators to evaluate technological power: originality and the degree of systematization. Though Japanese technology is not mature in its originality, still Japan have kept strong systematic technological power since the nineteenth century.
