Positive
Project advancing - milestone achieved
High Impact
Major milestone or critical setback
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.