The project's construction officially began in June 2021 with the start of the enabling works at the onshore converter station site in Teesside. These will continue throughout 2021. Offshore construction works are due to get underway in late 2023. 


Sofia achieved financial go ahead in March 2021 and moved into its official construction phase. Contracts have now been signed with the project's Tier 1 suppliers to provide the main component packages, including turbines, foundations and electrical infrastructure. Construction work on Sofia began June 2021 with enabling works at the site of the project's onshore converter station in Redcar, Teesside. This work will continue throughout the year with the converter station contractor - GE's Grid Solutions - due to move onsite in early 2022. Work continues on the selection of the port(s) that will be used during construction and on the project’s long-term operations & maintenance port.


Both onshore and offshore surveys have been integral to the development of Sofia since early environmental impact assessment work to inform the original development consent application. As the projects moves through its construction phase, surveys will continue to remain an integral part of our activity.


In the lead up to construction and to finalise the wind farm design, a comprehensive six-month offshore site investigation was undertaken in 2020. Comprising geophysical and geotechnical surveys, the work included environmental grab samples, drop down video transects, sub-bottom seismic profiling, side-scan sonar, bathymetry and magnetometer surveys on the Dogger Bank array site along the 220 kilometre export cable. Likely the longest such cable route survey ever undertaken for an offshore wind farm, the information collected built up a comprehensive picture of the seafloor and sub seafloor conditions. The results informed the need for further surveys, the design of the final cable route, the exact landfall location and the most appropriate cable installation methodologies. Offshore surveys continue into 2021 with ornithological monitoring, seabed cone penetration tests and marine ecology research supporting our consents and engineering activity.


Onshore surveys have also been required pre-construction and will continue as the project's on-site works get underway including archaeology trial trenching along the cable corridor and at the converter station site, and site investigation surveys to check ground and other conditions.


Construction started in June 2021 with onshore civils works at the onshore converter station site adjacent to the Wilton Complex, near the village of Lazenby in Teesside. Work on the landfall site and onshore cable corridor will follow in 2022.


Fabrication of the wind farm components such as the offshore converter station, will get underway in 2021 prior to offshore construction starting in 2023. First power is due to be generated in 2024/25 and on the current schedule the wind farm would be fully operational by the end of 2026.



Aligned to the Fishing Liaison with Offshore Wind and Wet Renewables Group (FLOWW) best practice guidance, Sofia’s aim is to allow fishing to continue wherever possible.

Sofia’s approach is set out in the Fisheries Liaison Plan (FLP), which details our consultation and liaison with the fishing industry.

For all mariner enquiries related to Sofia's offshore survey and construction activity, including vessel movements, please contact Precision Marine Survey Limited via email or telephone +44 1964 624423 and for fisheries stakeholders wishing to discuss commercial agreements please contact MacAlister Elliot via email or telephone +44 1590 679016.

Throughout the wind farm’s life-cycle, Sofia will utilise Notices to Mariners to communicate with the fisheries industry. Click below to see the latest notices.

Array Area Coordinates

Point Latitude (decimal degrees) Longitude (decimal degrees)
25 55.12443 2.14572
26 55.13002 2.21780
51 54.97070 2.50189
52 54.96096 2.48529
56 54.83864 2.27783
57 54.83862 2.26336
24 55.01111 1.95454


The health, safety and wellbeing of our project team and contractor personnel is our first priority. We have the highest safety standards and will ensure a positive safety culture is embedded within the project, implemented through focussed safety campaigns and continual reinforcement.

Safety starts at the top and Sofia's leadership will lead the way through a visible commitment to safety in all areas of the project both onshore and offshore.

Exemplary health, safety and wellbeing is vital to the successful construction, commissioning and operation of the wind farm.



Fostering RWE Renewable’s safety principles under the ‘We Care’ campaign:

  • HSE Excellence is the cornerstone of Sustainable performance. We achieve this by working to our care principle in order to #enjoytomorrow.
  • We care together – committed to create a safe and healthy workplace, protect the Environment and constantly strive to find safer ways of working.
  • We are brave in our decisions – we empower and expect everyone to intervene in unsafe/ unhealthy situations.
  • We continually improve – we will openly and regularly discuss and continually improve our HSE performance for a sustainable life.