Scope of Work
Categories:
Submarine Cable DesignSubmarine Cable ManufactureSubmarine Cable InstallationOnshore Cable DesignOnshore Cable ManufactureOnshore Cable Installation
Lifecycle Stages:
DevelopmentConstruction
Quantities:162 km submarine cable (island link), 168 km onshore cable
Cable Specifications:
TypeHVDC
Purposeisland link
Voltage525 kV
Route Length165 km
Source text:
1.8 GW, ±525 kV bipole HVDC link from Arnish Point/Stornoway on the Isle of Lewis to the Beauly area on the Scottish mainland, comprising approximately 4 km + 80 km of underground HVDC cable on land and 81 km of subsea HVDC cable, installed as a two-cable bipole system.
Contract Details
Description
NKT was awarded by SSEN Transmission a major turnkey contract to design, manufacture and install the 525 kV HVDC power cable system for the Western Isles HVDC Link, as part of a wider package that also covers the Spittal–Peterhead link. For the Western Isles project, NKT will deliver both subsea and underground HVDC cable systems connecting the new Lewis Hub near Stornoway to the mainland converter station near Beauly, enabling a 1.8 GW bipole interconnection between the Western Isles and the GB transmission network. The scope covers detailed cable system engineering, production of XLPE-insulated HVDC cables, supply of all associated accessories, and installation of the offshore and onshore sections. Based on the bipole configuration and the defined route (about 81 km subsea and 84 km onshore), NKT is expected to supply approximately 162 km of subsea cable and 168 km of underground HVDC cable (two parallel poles), with commissioning targeted around 2030 under SSEN’s Pathway to 2030 programme.