Project at a glance

In 2020, Seaway7 was awarded the contract by SSE Renewables for the Engineering, Procurement, Construction and Installation (EPCI) of the 114 suction bucket foundations and inner-array cables for Seagreen Offshore Wind Farm, Scotland’s largest and world’s deepest offshore wind farm.

In August 2021, the first jacket foundations arrived on site at the Port of Nigg, shortly followed by the first foundation installation and commencement of the cable lay. In April 2023 the final foundations were installed, including a record-breaking foundation installed at over 58m depth. The final cable was laid on the project the following month and Seaway7 completed the full project scope in July 2023.

Technology and Innovation

• Seaway7 implemented suction bucket foundation technology on jackets for this specific site to overcome the difficult and variable soil conditions, whilst gaining faster installation speed and avoidance of pile driving noise. This technology was the key contributer to the cost reduction on Seagreen.
• The deepest locations across the Seagreen site feature some of the world’s tallest fixed-jacket foundations in offshore wind representing sizable challenges in fabrication, transportation and installation and requiring rigorous engineering and project management.