What will be the world’s highest-power offshore electricity trunklines are to be laid by Italy’s Prysian and Denmark’s NKT under a €1.8bn ($1.9bn) deal finalised today (Friday) with European transmission system operator (TSO) TenneT, to link some 4GW of future Dutch North Sea wind plant to the grid.

The EPCI (engineering, procurement, construction and installation) contract, which will use 525kV high voltage direct current (HVDC) cables in the next-generation technology’s maiden outing, will see the two contractors install several hundred kilometres of line connecting five projects in the IJmuiden Ver Beta and Nederwiek zones to landing points at Maasvlakte, at the Port of Rotterdam, and Sloegebied in Zeeland.