Specialist offshore cable laying vessels will be used to install the offshore subsea electricity cables. There are two types of subsea cables - 'export cables' and 'inter-array cables'.
The export cables take the electricity from the offshore substation to the landfall point at Carnoustie.
The inter-array cables form a network within the wind farm site and take the electricity generated by the wind turbines to the offshore substation.
In both cases, the cables are installed by the specialist vessels following careful survey and route clearance. The aim is for cables to be buried wherever possible, however, where this is not possible due to seabed conditions, cables will be protected using rock placement.
The manufacture and installation of the offshore cabling provides significant employment and business opportunity.
The offshore substation will essentially be the backbone of the wind farm, taking the electricity generated by the turbines and converting it to the voltage required for onward transmission to the onshore substation at Tealing.
The installation of the turbines is being undertaken by the specialist heavy lifting vessels Wind Osprey and other support vessels. Such support vessels include local fishing vessels who are employed as guard vessels throughout the offshore construction phase ensuring a safe construction zone for all marine traffic.
The image below shows the first of Seagreen's 114 wind turbines being installed by the Wind Osprey.