Seagreen foundation works reach halfway mark

4C Offshore | Tom Russell
By: 23/09/2022 Seagreen

Construction of the world’s deepest fixed bottom offshore wind farm, which is also Scotland’s largest, has reached a new milestone as over 50% of the jacket foundation substructures have now been installed.

The three-legged jacket foundations each weigh approx. 2,000 tonnes and will support the wind turbines during
Seagreen's 25 year operational lifespan. Installation of the foundations is being carried out by Seaway 7.

The wind farm is a joint venture owned by SSE Renewables and Total Energies. It is located in the outer Firth of Forth and Firth of Tay region of the North Sea, approximately 17.5 nautical miles East-southeast of the Port of Montrose, where the project Marine Coordination Centre (MCC) is located for both construction and O&M.


It will consist of 114 Vestas
V164-10.0 MW turbines, the first of which was installed in December 2021. At 1.1 GW, it is one of Scotland’s largest renewable energy projects. The wind farm is expected to be capable of generating around 5,000 GWh of renewable energy annually, enough electricity to power more than 1.6 million UK homes.  

SSE Renewables is leading the development and construction of the Seagreen project and will operate the project on completion for its expected 25-year lifetime.


According to the project developers, overall turbine foundations installation campaign is supporting over 140 skilled jobs at Port of Nigg.

John Hill, Seagreen’s Project Director, said: “Seeing the jacket installation process reach the halfway point demonstrates successful innovation with the largest ever deployment of foundations using suction caissons in offshore wind. Reaching this milestone is a testament to the hard work and determination of everyone involved in the construction of Scotland’s largest and the world’s deepest fixed bottom offshore wind farm.

“This achievement follows the significant announcement last week where first power was generated from the first turning turbines. Once operational in the first half of 2023, Seagreen will make a significant contribution to Scotland’s and the UK’s net-zero targets.”


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