RWE and Masdar have signed contracts with TGS and Fugro for comprehensive geophysical and geotechnical surveys of the proposed Dogger Bank South (DBS) offshore wind farms’ eastern array.
These site investigations aim to improve understanding of seabed conditions over 122 kilometres off the northeast coast of England.
TGS initiated surveys in April, collecting ultra-high-resolution seismic data to evaluate subsea terrain at turbine locations.
“We are pleased to support RWE and Masdar by delivering high-quality geophysical acquisition, imaging, and interpretation at the DBS East array site. This work is crucial to minimize geohazards and ensure safe and efficient project execution in a strategically important UK offshore wind zone,” stated Will Ashby, EVP of New Energy Solutions at TGS.
In the current month, Dutch geo-data firm Fugro will analyze ground conditions at 100 turbine sites, inter-array cable routes, and platform foundations using cone penetration tests (CPTs) and sampling boreholes. Fugro has committed multiple geotechnical vessels to this task.
The contract extends prior work Fugro completed, including initial geophysical and geotechnical investigations, a shallow geotechnical survey on the export cable route, and a detailed DBS West investigation.
DBS comprises two offshore wind farms, DBS East and DBS West, with an estimated combined capacity of 3 GW.
“This year’s site investigation at the eastern array builds upon work completed at the western array in 2024. The detailed surveys are vital for developing effective foundation designs. The DBS projects have the potential to supply 3 million homes,” said Colin McAllister, Development Project Manager for DBS offshore wind farms.
RWE leads both DBS projects, managing development, construction, and operations for partners RWE and Masdar.
The consent decision for these wind farms is anticipated by the year’s end. If approved, construction could start in 2026/2027, following a financial investment decision (FID).
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