In 2017, Japan’s total installed wind power capacity reached 3,399 MW, including 64.6 MW of offshore capacity. The annual net capacity increase was 169 MW. Total wind-generated electricity during 2017 was about 5.8 TWh, which corresponded to 0.64% of the national electricity demand (906.2 TWh).
Although the environmental impact assessment (EIA) review process has been streamlined, new wind farm projects (with an additional capacity of 16 GW) are still undergoing the EIA review process. Some projects are proceeding in port and ocean areas, where Japan has considerable potential for offshore wind farms
To learn more about wind energy in Japan, please review their chapter in the IEA Wind TCP 2017 Annual Report