SHL Offshore Contractors has awarded a contract to Siem Offshore Contractors (SOC) to supply and install an inner array grid cable system for the 588MW Beatrice offshore wind farm off the coast of Scotland.


SOC will provide submarine cable installation works, associated materials and services.

The company will deliver the submarine composite cables, cable protection systems and related accessories as well as post-installation termination, trenching and testing services.

The wind farm will be located 13.5km from Caithness coastline in the ‘Outer’ Moray Firth on the north-western point of Smith Bank.

It will comprise of 84 Siemens wind turbines, each producing 7MW of electricity.

Each of these wind turbines will be connected using the inner array grid cable system that will be supplied and installed by Siem Offshore.

The turbines will be inter-linked by an inner array grid of 91x 33 kV medium voltage alternating current submarine composite cables with a total length of about 164km.

SSE holds 40% stake in the Beatrice project. Copenhagen Infrastructure Partners and China’s SDIC Power own 35% and 25% interests, respectively.

After completion, the project will generate enough energy to power more than 400,000 homes in the UK.

Image: Siem Offshore Contractors to supply and install inner array grid cables at Beatrice offshore wind farm in Scotland. Photo:

Courtesy of Siem Offshore Contractors GmbH.