Green Volt teams using data from TGS survey for North Sea floating wind farm design

TGS’ recent ultra-high-resolution 3D seismic survey over the Green Volt development in the UK North Sea was the largest of its type for any offshore wind survey to date, according to the project developer.

The campaign, using the Ramform Vanguard vessel, is said to have delivered unprecedented channel counts and streamer spreads during the survey of the 560-MW floating offshore wind site. 

Green Volt, a co-development between Flotation Energy and Vårgrønn, is set to be the first commercial-scale floating wind farm in Europe. Results from the survey are being integrated with multibeam echo sounder, sub-bottom profiler, side scan sonar and magnetometer data into a single, unified database.

Geoscientists from the joint venture are using the results to interpret subsurface features and analyze soil elastic properties to identify potential geohazards and characterize soil conditions at the turbine array site.

Engineers are using the data to optimize foundation design, anchor placement and cable routing. In-house planning teams are factoring the findings into construction methods, assessing risks and studies to minimize the environmental impact.

TGS originally reported about the seismic survey on June 6, and the Green Volt website announced completion of the survey on July 31. 

Worley to perform FEED for onshore substation

The joint venture has just appointed Worley to perform the front-end engineering design (FEED) contract for the onshore substation, to be located north of Peterhead on Scotland’s east coast, that will receive the generated electricity.

Worley’s global integrated delivery center in India is managing the program, which should be completed in May 2026. The scope also includes the electrical low-voltage design for the substation and interface to the high-voltage equipment.

There is an option in the contract for Worley to tender for further support to the offshore development during the subsequent engineering, procurement and construction phase and the construction management phase.