HelWin II Platform EPCI: Project Overview

Our client signed the contract for the Engineering, Procurement, Construction and Installation (EPCI) of the HVDC converter platform HelWin II for Siemens in Germany. The HelWin beta platform was built for electricity grid operator TenneT. Fabrication of the platform started in November 2012 and the installation was executed in July 2014.


The HelWin II Offshore Wind Farm will produce 690 MW, enough to power over 500,000 homes in Germany. The 130 kilometres grid connection consists of 85 kilometres sea cable and 45 kilometres land cable. The onshore grid connection will run from the landing point in Büsum to the converter station in Büttel.


Work Scope

Supply of key personnel for manufacture of a turbine manufacturer. Provision of key consultants for construction of the 690MW platform for TenneT’s offshore grid connection project HelWin II, with topsides constructed in Zwijndrecht and the jacket and bridge at the Vlissingen yard. The platform will connect a large wind farm cluster in the German sector of the North Sea.


Brunel project team

  • Sr. Project Planner/Primavera Consultant
  • Expeditor
  • Document Controller
  • Document Controller/Assistance
  • Assistance
  • QA/QC Surveyor

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