CABLE SOLUTIONS
FEATURE SPONSOR
CABLE INFRASTRUCTURE TO CONNECT THE GROWING GLOBAL
OFFSHORE WIND MARKET With total global wind power set to grow by a staggering 300GW by the end of 2021, effectively connecting, protecting and repairing the valuable cable infrastructure of these assets has become a critical agenda item for developers and operators alike.
INSTALLATION Incidents relating to the installation and operation of high voltage subsea cables are the main cause of financial losses in the global offshore wind industry. Between 2002 and 2015 a total of 28 UK offshore wind claims caused £213 million in insurance losses, more than €60 million of which came in 2015 alone. This figure includes two faults at Gwynt -Y-Môr costing £24.4 million to repair and a single repair at Thanet that amounted to an astounding £11.7 million, all before factoring in the cost of service interruption. 68% of these claims were directly due to cable faults occurring during the construction phase, which demonstrates how key it is to contract a partner with proven cable experience.
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www.windenergynetwork.co.uk
Chelmsford-based CWind delivers power cable capabilities for the Global Marine Group, a market leader in offshore engineering. The group has operated in offshore wind since its conception and was responsible for installing the inter-array cables at Blyth, the UK’s first offshore windfarm, in 2000; at Europe’s first windfarm Horns Rev in 2002; and in 2004 at the Kentish Flats, the UK’s first commercial windfarm. The Global Marine Group collaboratively has installed 387 inter-array cables and completed 421 cable pull-ins at over 40 European windfarms, with the multi-role DPS- 2 vessel C.S. Sovereign alone being responsible for the installation of almost 15% of all inter-array cables globally. Since 2009, CWind has provided service
support for Operations and Maintenance (O&M) activities for over 1.5GW of power generated by the offshore wind sector.
REPAIR
Once installed, costly cable failures continue. On average at least 10 subsea cable failures are declared to insurers each year in the offshore wind sector. 85% of all offshore power cable faults are caused by ‘external aggression,’ principally from fishing and ship anchors that are prevalent in the shallower waters where the majority of established windfarms are located. Earlier in 2017, a power cable was damaged by an anchor off the Isles of Scilly leaving all the inhabitants on the islands without power beyond backup generators. To minimise
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