SSE installs 5,100 tonne offshore substation jacket
UK: The jacket, which will support the platform substation at Seagreen offshore wind farm, was secured on the seabed using the Saipem 7000 heavy lift vessel.
Image source: SSE
UK: The jacket, which will support the platform substation at Seagreen offshore wind farm, was secured on the seabed using the Saipem 7000 heavy lift vessel.
Engineered, constructed and installed by Petrofac and weighing in at a colossal 5,100 T, the six-legged jacket is now fixed to the seabed, at a water depth of around 55 m. It will play a critical role in safely supporting the offshore substation above the sea during Seagreen’s 25 year operational lifespan.
The jacket has a seabed footprint of 43 m x 43 m and has built in tubing designed to guide the incoming 15 inter-array cables bringing the electricity generated by the turbines to the substation. In addition, the jacket also has tubing to guide the outgoing three export cables from the offshore substation to the seabed.
When completed in late 2022/early 2023, Seagreen will consist of 114 Vestas V164-10.0 MW turbines, the first of which was installed last week.
Situated around 27 km off the Angus coast, the $3.98 B (£3 B) wind farm is a joint venture between SSE Renewables (49 %) and TotalEnergies (51 %).
At 1.1 GW, Seagreen is Scotland’s largest renewable energy project and one of the biggest private investments in Scottish infrastructure. The wind farm will be capable of generating around 5,000 GWh of renewable energy annually which is enough clean and sustainable electricity to power more than 1.6 M UK homes.
SSE Renewables is leading the development and construction of the Seagreen project and will operate Seagreen on completion for its expected 25-year lifetime.
Source: SSE
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