Subsea electricity interconnectors are a well-proven technology for the long distance transport of electricity.
To reduce energy losses and optimise the costs of transporting electricity, the interconnector cable operates with High Voltage direct current. The cable is connected to converter stations at each end, where the electricity is transformed to High Voltage alternating current for feeding into the national grids.
A range of alternative designs for cables and converter stations are available. The choice of the design typically depends on the capacity of the interconnector, cable length, space availability, performance requirements and costs.
Independent technical studies have been carried out to evaluate the technology and identify the alternatives available for implementation and their cost-benefits.
Please find links to relevant documents below: