Japan’s Kumagai Gumi joins Spain’s floating wind pioneer for 2027 research
Saitec Offshore Technologies has welcomed Japanese construction giant Kumagai Gumi as a strategic partner in the DemoSATH floating offshore wind project, extending the demonstrator’s operational life through 2027 to accelerate research into decommissioning and scalable construction techniques.
The agreement, signed by Saitec, The Kansai Electric Power Company (KEPCO) Company (KEPCO), and Kumagai Gumi, marks a shift from technology validation to full-scale research at the BiMEP test site in Armintza, Bizkaia.
From validation to mass-production research: floating offshore wind
Over the past three years, it has validated the SATH floating technology under real offshore conditions, withstanding waves up to 13 m and wind gusts of 100 km/h. The platform’s instrumentation has collected critical data on structural, dynamic, and operational behaviour, which will now underpin the next phase of research.
Kumagai Gumi’s role as a general contractor in the construction sector brings specialised expertise to the project. The company will focus on two key areas: optimising decommissioning methods for floating wind installations and evaluating rationalised construction procedures to enable mass production.
DemoSATH Lab: A testbed for marine coexistence and innovation
Beyond its technical validation, DemoSATH has also served as a testbed for environmental and operational innovations through the DemoSATH Lab initiative. The project has explored systems to support coexistence with marine ecosystems, promote biodiversity, and investigate potential aquaculture applications.
The extended research phase will expand these activities, leveraging the extensive operational data generated by DemoSATH to refine predictive models and characterise the response of floating wind systems under varying offshore conditions.
Kumagai Gumi’s involvement, the focus now shifts to the practical challenges of scaling up, including construction efficiency and end-of-life management.
The BiMEP test site, located in the Cantabrian Sea, provides an ideal environment for testing floating wind technologies, given its demanding wave and wind conditions.
The research activities planned for the next two years will cover a broad range of areas, including optimised monitoring of key system components, data analysis, and predictive modelling. These efforts will build on the operational data already collected by DemoSATH, further enhancing the understanding of floating wind technology. The project’s findings will be shared with industry stakeholders to support the development, design, and optimisation of future commercial-scale floating offshore wind farms.
As the floating wind sector continues to mature, projects like DemoSATH are essential for de-risking the technology and demonstrating its viability in real-world conditions. The involvement of international partners like Kumagai Gumi and KEPCO underscores the global interest in floating wind and the collaborative approach needed to scale the industry. With the technical feasibility of SATH technology now proven, the focus on research and knowledge transfer will be critical to unlocking the sector’s full potential.
The next phase of DemoSATH’s operation will also provide valuable insights into the regulatory and permitting challenges associated with floating wind. As governments and industry stakeholders work to establish frameworks for commercial deployments, demonstrator projects like this one will play a key role in shaping the future of offshore wind. The lessons learned from DemoSATH could inform policies and best practices for floating wind development worldwide, accelerating the transition to a low-carbon energy future.
For stakeholders in the maritime and energy sectors, the extension of DemoSATH’s operational life offers a unique opportunity to engage with cutting-edge floating wind research. The project’s findings will be particularly relevant for ports, shipyards, and construction firms looking to expand their capabilities in offshore renewables. As the sector evolves, collaboration between technology developers, contractors, and energy companies will be essential to driving innovation and reducing costs.
The DemoSATH project’s new phase begins at a pivotal moment for the floating wind industry. With commercial deployments on the horizon, the insights generated by this research platform could shape the future of offshore wind for decades to come. As the sector moves from demonstration to commercialisation, projects like DemoSATH will be instrumental in ensuring that floating wind fulfils its promise as a key pillar of the global energy transition.
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