Siem Offshore Contractors Nets Trianel Borkum II Inter-Array Cable Contract

Siem Offshore Contractors GmbH (SOC) has been awarded a contract for a turnkey supply and installation of the inner array grid cable system for the Trianel Windpark Borkum Phase II (TWB-II) offshore wind farm in the German part of the North Sea.

The contract was awarded by Trianel Windkraftwerk Borkum II.

The TWB-II offshore wind farm is located approximately 40 kilometres north of the island of Borkum, within the German Bight sector of the North Sea.

The 32 monopile-mounted Senvion 6.33 MW wind turbine generators will be inter-connected by 36 x 33 kV medium voltage alternating current submarine composite cables with a total length of up to 61 kilometres. SOC will be utilising vessels and resources within the Siem Offshore group.

In addition to the submarine cable installation works, SOC will provide associated materials and services including the supply of the submarine composite cables, cable protection systems and related accessories as well as post-installation termination, trenching and testing services.

The project engineering works will commence immediately, SOC said.

The marine installation works are currently scheduled to be undertaken as of the third quarter of 2018, but are subject to the project final investment decision, which is expected to be taken in the second quarter of 2017.

In mid-July 2015, the 200MW Trianel Windpark Borkum became fully operational.

In October 2015, EWE AG and Trianel have set up a joint venture to develop the second stage of the offshore wind farm.