Helgoland cable
Island LinkOperationalDE5 MW30 kV53 km2009
Also known as:Helgolandkabel, Heligoland Power Cable, Helgoland Power Cable, Stromkabel nach Helgoland
Status:Operational
Capacity:5 MW
Project Company:
E.ON Hanse AG
Type:island link
Expected Life:40 years
Website:www.hansewerk.com
The Helgoland island cable is an HVAC subsea/land cable connection that provides secure power supply to the German North Sea island of Helgoland. The installation consists of a medium-voltage alternating‑current (MV/AC) cable laid between the island and the German mainland; industry references note a subsea route length of approximately 53...
Supply Chain (1)
Project Timeline (2)
1 Sept 2009Commercial Operations Full Power
The Helgoland cable, a 30 kV AC subsea power cable built by Norddeutsche Seekabelwerke for utility E.ON Hanse to supply the island of Helgoland from St. Peter-Ording, entered full commercial operation in September 2009, when all connections were completed and Helgoland was connected to the European interconnected power system, replacing its previous diesel-based electricity supply. The project’s subsea cable, which also incorporates fibre-optic elements for data transmission, has operated since then as the island’s grid connection to the continental network.
18 Jun 2009Cable Installation Complete
The offshore installation of the Helgolandkabel subsea power cable was completed in June 2009, when the cable‑lay vessel Nostag 10, having started work from St. Peter‑Ording on 6 June 2009, reached Helgoland after 12 days of laying the approximately 53‑kilometre cable, which was buried about 1.5 metres into the sandy seabed.