Autonomous Underwater Robots Revolutionize Offshore Wind Maintenance

The National Robotarium is spearheading groundbreaking research into autonomous underwater robots that could transform offshore wind farm maintenance. Through advanced artificial intelligence (AI) and cutting-edge control systems, these robots may soon perform precision repairs in turbulent seas, reducing fuel use and enhancing operational safety.

Revolutionizing Wind Farm Maintenance

The initiative is part of the £1.4 million UNITE project, funded by UK Research and Innovation’s EPSRC Prosperity Partnership. It brings together Heriot-Watt University, Imperial College London, geo-data specialists Fugro, and software innovators Frontier Robotics. The National Robotarium, the UK’s robotics and AI hub, provides key research and technical support.

David Morrison, Project Manager at the National Robotarium, shared promising results from the trials:

“Our trials are showing promising results in enabling underwater robots to maintain stable contact with offshore structures in challenging conditions. If successful, the technology could transform offshore wind maintenance, potentially reducing fuel consumption of maintenance missions by up to 97%—from 7,000 litres per day to just 200 litres.”

Advanced Robotics for Precision Repairs

The robots are designed to autonomously inspect and repair offshore wind turbines. Capabilities include:

• Precise Measurements: Monitoring turbine integrity.
• Visual Inspections: Detecting structural damage.
• Cleaning and Repairs: Removing debris and fixing defects.

Yvan Petillot, Professor of Robotics at Heriot-Watt University, explained the project’s unique challenges:

“We are especially interested in subsea inspection and manipulation in dynamic environments where existing solutions cannot be used.”

Solving the “Chicken Head Problem”

One of the project’s key technical challenges is stabilizing robotic arms in harsh underwater conditions—a concept researchers call the “chicken head problem.” By developing real-time adaptive control systems, the robots can keep their tools steady even while facing strong currents and waves.

Smarter Navigation with 3D Mapping

The robots also leverage advanced 3D semantic mapping, creating detailed underwater maps to enhance navigation and identify turbine components needing attention. Enhanced coordination between Remotely Operated Vehicles (ROVs) and Electric ROVs (eROVs) further supports fully autonomous inspections.

Mark Bruce, Global Product Manager of Next Generation ROV Systems at Fugro, highlighted the significance of the system:

“Our USVs and eROVs deliver unmatched efficiency, hugely reduced environmental impact, and most importantly, they eliminate human risk offshore by removing people from harm’s way.”

Scaling Up for a Greener Future

With over 2,600 offshore wind turbines currently in UK waters and plans to quadruple capacity by 2030, scaling up autonomous maintenance systems is critical. Each turbine requires up to three maintenance visits annually, with increased servicing as they age.

Jonatan Scharff Willners, CEO of Frontier Robotics, emphasized the importance of robotics in enabling a sustainable renewable energy sector:

“With the exponential growth of offshore infrastructure, we need to deploy more AI, robots, and autonomy to scale with global demand.”

Business and Research Collaboration

The National Robotarium also supports start-up companies like Frontier Robotics through business acceleration programs. Its world-class labs, office space, and engineering expertise provide a unique innovation ecosystem for robotics research.

For energy companies interested in collaborating on this transformative technology, contact the National Robotarium.