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Green Rebel deploys tech for Scottish offshore windfarm

By: Chloe Emanuel 30/03/2023 Healy Communications

General Vessels Windfarms

A technology has been deployed at a proposed offshore wind farm project off the east coast of Scotland, which will collect data on wind speeds, wave heights, and ocean currents. Green Rebel, an offshore survey service company, has successfully deployed its Floating LiDAR system which will remain in place for approximately 12 months.

The project, known as Muir Mhòr, is a joint venture between Fred. Olsen Seawind and Vattenfall, located in the North Sea 70 km off the coast of Aberdeen. It is expected to become operational by 2030, subject to planning and grid infrastructure provision.

Green Rebel was awarded the tender to carry out the MetOcean survey and signed the contracts in November, deploying its technology in February. The data collected during the survey will be used for energy yield analysis and engineering design of the wind turbine array, marking a key milestone for the Muir Mhòr project.

The Floating LiDAR Buoy is a laser-based technology designed to operate autonomously at sea, profiling wind speeds at heights of up to 300m and providing data on waves, ocean currents, and water quality. The data collected is sent to Green Rebel's MetOcean base in Limerick, where a team of specialists interpret it. The buoy has a total height equivalent to a two-storey house and weighs as much as 11 family cars. Currently, it is operating in a North Sea region that is over 70 meters in depth. The buoy weighs 15 tonnes and extends to 12 meters in height, with over 700 meters of mooring lines installed.

David Hinshelwood, Project Director for Muir Mhòr Offshore Wind Farm said: “This technology will gather a valuable dataset which will allow our project team to better understand the combined effect of winds, waves, currents and water quality - which has critical input in turn for the design of foundations, mooring systems and cables as well as planning and operational activities for various project phases."

Green Rebel Technical Director, John Wallace said: "Floating LiDAR systems are typically deployed during the summer months so deployment in the winter at these latitudes was a challenge that the Green Rebel team relished. Short weather windows and large waves at this time of year meant that towing a floating LiDAR solution was problematic and instead, we deployed the equipment directly off the back deck of our vessel using cranes.”

According to industry experts, the Green Rebel Floating LiDAR is one of a limited number of certified solutions for this type of project. It has been purpose-built for LiDAR data collection in extreme locations and has more redundancy, buoyancy, and power than other similar solutions available in the market.

For more information on offshore wind farms worldwide, click here.

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Green Rebel deploys tech for Scottish offshore windfarm

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