Hokkaido Electric Power launched the environmental impact assessment process for an up to 172MW onshore wind project in Shimamaki Village, Hokkaido.
According to a primary consideration document submitted to METI and other stakeholders on September 24, 2025, the utility plans to install up to 40 turbines, 4.2MW to 4.3MW each, across 1,036ha. It plans to break ground on the Shimamaki-Toyooka project around April 2030 and begin commercial operation about four years later.
Multiple onshore wind projects are already operating in the area, including the Osaka Gas-affiliated 27MW Shiribetsu Wind Power Plant commissioned in September 2021, the single-turbine 4.3MW New Shimamaki Wind Farm brought online by J-Wind in February 2023, and several smaller assets owned by Suttsu Town.
The neighboring town additionally launched an environmental impact assessment for a 49MW wind farm in 2018. Cosmo Eco Power, Japan Wind Development, Miura Denki, and GPSS-affiliated Japan Wind Power Service also have projects undergoing the process.
Hokkaido EPCO targets adding over 300MW of renewable capacity, adjusted for ownership share, to its portfolio by FY2030. In addition to Shimamaki-Toyooka, the company’s wind pipeline includes the up to 183MW Miyakoshi-Yunotai onshore project being developed jointly with Chubu Electric Power and Kanadevia and an up to 1.14GW wind project in the area off the coast of Hiyama, which the utility is expected to bid with in the next offshore wind auction round.
