Toyo Construction Co., Ltd. (Chiyoda-ku, Tokyo Metropolis, President and Representative
Director: Kyoji Takezawa, hereinafter “Toyo Construction”) and Hitachi Zosen Corporation (Osaka
City, Osaka prefecture, Sadao Mino: Representative Director President & COO, hereinafter “Hitachi
Zosen”) have conducted a verification test of construction technology for the suction bucket
foundation (multiple buckets), aiming at application to bottom-mounted offshore wind power
generation facilities, in a real sea area this summer. This project is implemented with subsidy from
New Energy and Industrial Technology Development Organization (NEDO) for the “Low-Cost
Construction Technology Development for Offshore Wind Power Generation (Verification of
Construction Technology)” of Research and Development of Wind Power Generation Technologies
(Research and Development of Offshore Wind Power Generation Technologies).
In this development, Toyo Construction is in charge of construction and Hitachi Zosen is in charge
of design & manufacturing; following the demonstration experiment of mono bucket in a real sea area
last fiscal year, in FY 2022, the demonstration experiment of multiple buckets in a real sea area for
large-sized windmills of 15MW or more was conducted.
Regarding the workability, in addition to assured removability and low impact of vibration, noise,
and pollution on the surrounding environment, we confirmed that the vertical accuracy is ensured in a
manner easier than mono bucket. In the future, we aim for practical use of the suction bucket
foundation around 2026.
The two companies will contribute to the realization of a low carbon & sound material-cycle society
by developing technologies for spread of clean energy.
Status of Verification Test
Contact
Toyo Construction Co., Ltd.
Civil Construction Div., Offshore Wind Dept.
Phone: 03-6361-5462
Hitachi Zosen Corporation
Corporate Planning Dept., Publicity and IR Section
Phone: 06-6569-0005 (Osaka)
03-6404-0802 (Tokyo)