Scope of Work
Categories:
Submarine Cable ManufactureOnshore Cable Manufacture
Lifecycle Stages:
Construction
Quantities:170 km submarine cable (export), 90 onshore_cables
Cable Specifications:
TypeHVDC
Purposeexport
Voltage250 kV
Route Length130 km
Source text:
HelWin1 HVDC export cable (HelWin alpha – Büttel)
Contract Details
Client:
TenneT
Description
Prysmian Group supplied the high-voltage direct current export cable system for TenneT’s HelWin1 offshore grid connection in the German North Sea. HelWin1 links the HelWin Alpha offshore converter platform to the onshore converter station at Büttel, Schleswig-Holstein, transmitting power from the Nordsee Ost and Meerwind Süd/Ost wind farms to the German grid. The project used approximately 130 km of Prysmian extruded ±250 kV HVDC cable in a symmetric monopole configuration, covering both the subsea route and the underground onshore section. Prysmian’s scope covered manufacture of the subsea export cables and the associated land cables required to complete the point-to-point HVDC link. This work formed part of Prysmian’s broader portfolio of German HVDC offshore grid connections, including BorWin and DolWin projects.