Wedoany.com Report-Oct. 27, Oga Katagami Akita Offshore Green Energy has signed a contract with Kajima Corporation for the manufacturing, procurement, transportation, and installation of turbine foundations for its offshore wind power project in Japan. According to the developer, the agreement covers the main construction works for the wind turbine foundations and represents a key milestone as the project moves into its full-scale construction phase.

The Oga Katagami Akita Offshore Wind Project is being developed by a joint venture established by JERA Nex BP Japan, Electric Power Development Co. (J-POWER), Tohoku Electric Power, and Itochu Corporation. The project has a planned capacity of 315 MW and aims to contribute to Japan’s renewable energy development and regional economic growth.

Located off the coast of Oga City, Akita City, and Katagami City in Akita Prefecture, the project site was secured through Japan’s offshore wind auction in 2023. The initiative marks one of the country’s key steps toward expanding offshore wind generation in its general sea area.

At the end of 2024, the joint venture signed an order with Vestas for 21 V236-15.0 MW turbines, which will be supplied along with a long-term service agreement to ensure reliable operation and maintenance of the wind farm. The collaboration with Vestas is expected to enhance the project’s efficiency and support its long-term energy output targets.

Earlier this year, the developer also entered into a long-term time-charter agreement with Nippon Yusen Kabushiki Kaisha (NYK Line) for a crew transfer vessel (CTV). The vessel will be used to support operations for the Oga Katagami Akita Offshore Wind Project, marking the first CTV contract for an offshore wind project located in Japan’s general sea area.

Kajima Corporation’s participation is seen as an important addition to the project, given its extensive experience in large-scale infrastructure construction. Its responsibilities will include the manufacturing of turbine foundations, offshore installation works, and the coordination of logistics to ensure timely project execution.

The Oga Katagami Akita Offshore Wind Project represents a significant development in Japan’s offshore wind industry, combining advanced turbine technology, experienced engineering partners, and strong domestic collaboration. Once operational, the 315 MW facility is expected to supply clean energy to local communities, reduce carbon emissions, and contribute to Japan’s energy transition goals.

By advancing into its main construction stage, the project highlights the growing momentum of Japan’s offshore wind sector and the increasing role of local and international cooperation in supporting renewable energy infrastructure. The signing of the foundation contract with Kajima Corporation marks another major step toward the successful realization of the Oga Katagami Akita Offshore Wind Project.