ScottishPower Renewables and Abu Dhabi Future Energy Company PJSC – Masdar have completed the installation of all 95 foundations at the £4 billion East Anglia THREE offshore wind farm off the Suffolk coast, marking a major construction milestone for the 1.4 GW project.
The project’s 95 monopiles, weighing between 1,200 and 1,800 tonnes each and standing up to 84 metres tall, are among the largest installed from a jack-up vessel in Europe. Installation of all 95 transition pieces, each measuring 20 metres in height, 8 metres in diameter and weighing more than 400 tonnes, has also been completed.
Foundation installation was carried out by Seaway7 using its jack-up vessel Seaway Ventus, with the company also progressing inter-array cable installation. Meanwhile, turbine installation is already underway, with the project’s 95 turbines featuring 115-metre blades.
East Anglia THREE is expected to become fully operational by the end of 2026, generating 1.4 GW of clean electricity—enough to supply more than 1.3 million UK homes and strengthen the country’s energy security.
The project is a 50:50 joint venture between ScottishPower Renewables and Masdar and represents Masdar’s first offshore wind joint venture in the UK with ScottishPower. It is also the second project developed under Masdar and Iberdrola’s €15 billion strategic partnership.
Around £2 billion is being invested in the UK supply chain, supporting companies involved in foundation design, turbine blade manufacturing, vessel chartering and seabed consultancy. East Anglia THREE is expected to support approximately 2,300 jobs during construction and create around 100 long-term roles in the East of England.
The project forms part of the wider East Anglia offshore wind development and is expected to play a key role in expanding the UK’s domestic renewable energy capacity and reducing reliance on fossil fuels.
