Set some 22.5 miles off the Suffolk coast, Greater Gabbard is the first UK offshore wind farm to be built outside territorial waters, using up to 140 wind turbines to generate over 500 megawatts of renewable electricity, enough to power more than 415,000 homes and equivalent to the approximate domestic demand of the county of Suffolk.

The scope awarded to JDR included over 200 km of inter-array subsea power cables and associated terminations which will provide the essential links between the 3.6MW turbine generators and the Gabbard and Galloper offshore substations. The JDR custom designed, manufactured and supplied products form 200 km of inter-array subsea power cables and terminations which provide the essential link between the 140 3.6MW wind turbine generators and the Gabbard and Galloper offshore substations.

Under development by Airtricity, the renewable energy development division of Scottish and Southern Energy Plc (SSE), Greater Gabbard will be the world’s largest offshore wind farm upon completion in 2011.




The cables each comprise 3 phase 18/30(36)kV power cores and fibre optic communications.



The Greater Gabbard cables are engineered to give the smallest diameter whilst still maintaining the strength and weight required to suit the field installation and service conditions. The phase conductors will be insulated with XLPe and a triple extrusion process used for simultaneous application of the conductor screen, insulation and metallic screen. JDR will provide flexible pull-in terminations and hang-offs. JDR Cable Systems also provide experienced and certified technicians to terminate the cables and fibre-optics offshore during the installation phase.