Scope of Work
Categories:
Onshore Cable InstallationSubmarine Cable ManufactureSubmarine Cable DesignOnshore Cable DesignOnshore Cable ManufactureSubmarine Cable Installation
Lifecycle Stages:
DevelopmentConstruction
Quantities:495 km submarine cable (offshore grid connection), 330 km onshore cable
Cable Specifications:
TypeHVDC
Purposeoffshore grid connection
Voltage525 kV
Route Length275 km
Source text:
LanWin1 2,000 MW ±525 kV HVDC offshore grid connection export cable system from area NOR-12-1 in the German North Sea to the onshore converter/grid point at Unterweser (Wesermarsch), with an approximate route length of 275 km (about 165 km subsea and 110 km onshore) and three DC power cables (plus, minus and metallic return) plus a fibre-optic communication cable.
Contract Details
Award Date:6 Dec 2023
Client:
TenneT
Description
LS Cable & System secured a contract within TenneT’s 2 GW programme, as part of a consortium with Jan De Nul Group and Denys, to design, manufacture, terminate and test the HVDC cable systems for the BalWin4 and LanWin1 offshore grid connections in the German North Sea. For LanWin1, LS Cable will supply approximately 825 km of 525 kV HVDC power cable, covering both subsea and onshore sections between the offshore converter platform in cluster NOR-12-1 and the onshore converter/grid connection at Unterweser (Wesermarsch). This comprises about 495 km of submarine export cable and 330 km of land cable, including the plus and minus poles and the metallic return conductor. Cable production in LS Cable’s Donghae (South Korea) plant started in 2024 and is scheduled to complete in 2028, ahead of offshore laying from 2026 and planned commissioning of LanWin1 in 2030. TenneT awarded the underlying multi-project 525 kV HVDC cable framework and specific BalWin4/LanWin1 call-off to the consortium in 2023.