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The first turbine jacket foundation is installed at the Seagreen Wind Farm site, 27 km off the coast of the county of Angus in Scotland (Credit: SSE Renewables)

SCT - Scotland's Largest Offshore Wind Farm Fits First Turbine Base

The first turbine jacket foundation has been installed at Seagreen, Scotland’s largest and the world’s deepest, fixed bottom offshore wind farm. Each jacket foundation will support a Vestas V164-10 MW turbine.

First power is expected by early 2022 with the offshore wind farm expected to enter commercial operation in 2023.

Two jackets operated by main contractor Seaway 7 made their way on a barge from Global Energy Group’s Port of Nigg in the Highlands of Scotland to the site 27 km off the coast of Angus. It was met by the Saipem 7000, the semisubmersible crane vessel which is used to lift each of the 2,000 ton jackets.

The maiden voyage marked the start of works for the 1.1 GW Seagreen Wind Farm project site, a joint venture between SSE Renewables and TotalEnergies. SSE Renewables is leading the development and construction of the project, supported by TotalEnergies, and will operate Seagreen on completion.

The installation campaign marks the first-ever GW-scale deployment of suction caisson technology to fix offshore wind turbine foundations to the seabed.

Several barges will work in continuous rotation with each other carrying two jackets from Nigg to the offshore site before returning to Nigg for replenishment. Each journey from Nigg out to site will take approximately 36 hours depending on the weather.

“It is fantastic to get our campaign to install all 114 wind turbine foundations in underway and on schedule for what will be the world’s deepest, fixed bottom offshore wind farm,” says Paul Cooley, director of capital projects at SSE Renewables. “It is testament to the skill of our project team and all our contractors including our Scottish and UK supply chain that we have been able to get to this landmark point.”

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