The world’s deepest wind turbine foundation being installed at what will be Scotland’s largest offshore wind farm.
The world’s deepest wind turbine foundation being installed at what will be Scotland’s largest offshore wind farm.
Photo: SSE Renewables
The world’s deepest wind turbine foundation being installed at what will be Scotland’s largest offshore wind farm.

Deepest wind turbine foundation installed at Scotland’s largest offshore wind farm

The world’s deepest wind turbine foundation has been installed at Seagreen, Scotland’s largest offshore wind farm, located off the coast of Angus, UK. The announcement came from SSE, one of the partners in the £3 billion ($3.74 billion) joint venture with TotalEnergies.

The main contractor, Seaway 7, transported the turbine foundation, known as a jacket, to the site situated 27 km off the eastern coast of Scotland. The Saipem 7000, a semi-submersible crane vessel, assisted in lifting and placing the 2,000-tonne foundation. Installed at a record-breaking depth of 58.6 metres, the foundation surpasses Seagreen’s previous record from October 2022, which was at 57.4 metres.

The installation process involves over 50 personnel, including onshore teams, engineers, and crew members. John Hill, Seagreen’s project director, highlighted the significance of this milestone in terms of the UK’s energy security and its ability to harness the strong winds in the North Sea.

With 112 out of 114 jackets installed at the offshore wind farm, the final wind turbine foundation is expected to be in place later this week. Each foundation will support a Vestas V164-10 MW wind turbine. Seagreen achieved its first power generation in August 2022 and is anticipated to enter commercial operation later this year.

Once completed, the 1.1 GW wind farm will generate approximately 5 TWh of renewable energy annually, providing power to over 1.6 million homes.

NorthWind research partner NGI involved

NorthWind research partner NGI has been involved in jacket technology research and consultancy for the past three decades. The Institute also provides digital monitoring of the foundations. The technology was originally developed for the oil and gas sector, but is now used for renewable energy installations.