Monthly Report

Invenergy begins EIA process for up to 140MW onshore wind power plant in Shimamaki Village, Hokkaido

January 17, 2025
Invenergy Onshore Wind Japan
Invenergy currently has one operational wind power plant in Japan with multiple other under construction and under development. (Image: Invenergy)

On January 10, 2025, Invenergy Group’s Shimamaki Wind LLC submitted a “planning-stage document on primary environmental impact consideration” for an up to 140MW onshore wind project it is developing in Hokkaido.

According to the document, the “Shimamaki Wind Generation Project” will consist of up to 33 turbines, each with an output of 4.2MW to 6.1MW. Overall, the project will span an area of approximately 3.9ha with the turbines covering approximately 1.3ha of that. While mainly located in Shimamaki Village, it will extend into portions of the neighboring Suttsu Town and Kuromatsunai Town.

Invenergy eyes December 2035 COD for the project. It plans to start construction in April 2031 and trial operations in May 2035.

Currently, there is only one operational wind project in Shimamaki Village, J-POWER’s single-turbine 4.3MW Shin-Shimamaki Wind Farm. That said, several projects in the village are in various stages of the environmental impact assessment process.

Cosmo Eco Power submitted a draft assessment for an up to 94.6MW onshore project, Japan Wind Development has a 50MW project in the assessment methodology stage, and Miura Denki and GPSS-affiliated Japan Wind Power Service each have an up to 130MW project that they submitted a “planning-stage document on primary environmental impact consideration” for.

Separately, Kansai Electric Power and RWE, Eurus Energy, Vena Energy’s Japan Wind Energy, Cosmo Eco Power, and Copenhagen Infrastructure Partners and Mitsubishi Heavy Industries’ joint venture Hokkaido Offshore Wind Development started the environmental impact assessment process for potential projects in “Sea Area Offshore Shimamaki,” one of the potential locations for Japan’s next offshore wind auction round.

According to its website, Invenergy had one operational onshore wind project, the 63MW Rusutsu Wind Power Plant in Hokkaido that will be used for a virtual PPA with Honda, in Japan as of November 2024. It also had two projects, a 134MW one in Iwate Prefecture and an 80MW one spanning Ibaraki and Fukushima prefectures, under construction with expected March 2028 COD.

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