Abstract
In the Japanese wind turbine market there are many competitions between the number of 12 domestic and foreign larger sized wind turbine manufacturers. Recent 10 years from 2008 to 2017, there have been many drastic movements: abolishment of subsidy system, introduction of feed in tariff, liberalization of the electricity market, enforcement of environmental assessment act and change of manufacturers’ share of wind turbine. In spite of the electricity price of 22 JPY kWh-1 the market had been shrunk for several years. Japanese accumulated installation value also still much lower than what is expected by its GDP. This paper summarizes the ten-year movement of wind turbine manufacturers and suppliers in Japan to find out proper strategy for Japanese wind turbine generation business.