The Sofia offshore wind farm has completed the installation of 80 wind turbines at its site on Dogger Bank in the central North Sea, moving the 1.4 GW project closer to start-up.
The development will use 100 Siemens Gamesa SG 14-222 DD turbines in total. When all units are in place, the project will have a total capacity of 1.4 GW.
Installation work is being carried out by Wind Peak, the vessel operated by Cadeler. The ship installed the first turbine in March 2025 and is transporting components for six turbines on each voyage from Hull. IWS Seawalker, a service operation vessel, is supporting the offshore campaign.
Each turbine extends more than 252 m above sea level. The blades measure 108 m and sweep about 39,000 square metres. Half of the turbines at the site use recyclable blades, and all of those units were installed in 2025.
Owned by RWE, the Sofia offshore wind farm is due to enter service in 2025. Once fully operational, the project will be able to generate enough electricity to meet the equivalent demand of 1.2 million UK homes.
