Japan Offshore Marine, a joint venture between DEME and Penta-Ocean Construction, has secured a contract to install 21 Vestas V236-15-megawatt wind turbines for the Oga-Katagami-Akita project. Scheduled for late 2027, this marks the first deployment of 15 MW-class turbines in Japan and outside Europe and China.
Japan Offshore Marine (JOM), a joint venture between marine engineering firm DEME and local partner Penta-Ocean Construction, has been awarded a major offshore engineering and vessel charter contract for the Oga-Katagami-Akita Offshore Wind Project. Under the agreement with project developer Oga Katagami Akita Offshore Green Energy LLC, JOM will manage the transport and offshore installation of 21 Vestas V236-15 MW wind turbines. Marine operations are scheduled to commence in the second half of 2027 using the jack-up installation vessel Sea Challenger, which will operate under a Japanese flag.
This development represents a critical technical milestone for Asia Pacific's renewable energy infrastructure. The initiative marks the first time 15 MW-class wind turbines will be deployed in Japan, and represents the first commercial installation of turbines of this scale outside Europe and China. DEME specializes in global dredging and offshore energy infrastructure, while Penta-Ocean Construction is a prominent Japanese marine contractor specializing in coastal engineering. The contract underscores a significant shift toward higher-capacity turbines to optimize clean energy yields in complex marine environments.
For international engineering firms and equipment manufacturers, successful execution will establish critical operational benchmarks and supply chain frameworks within the East Asian regulatory environment. This project solidifies the regional market entry of next-generation turbine technology, signaling advanced commercial opportunities for institutional investors and offshore logistics suppliers targeting Japan's expanding net-zero energy infrastructure pipeline.
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