Positive
Project advancing - milestone achieved
Medium Impact
Significant progress or notable issue
Siemens installed the HelWin Alpha offshore converter platform for the HelWin1 HVDC grid connection at its final position northwest of the island of Helgoland on 26 August 2013, marking a major offshore construction milestone for TenneT’s 576 MW link. The float-over topside, weighing around 12,000 tonnes and measuring 75 m by 50 m, was set onto a support substructure anchored to the seabed with large steel piles in about 23 m water depth in the German North Sea.