Your browser does not support JavaScript or has it disabled. To enable full functionality of this site it is necessary to enable JavaScript.
  • Offshore HVDC Hub Project

  • Offshore HVDC Hub project  

    The Offshore HVDC Hub project was undertaken by Scottish Hydro Electric Transmission plc (SHE Transmission), with co-funding from the European Union under the European Energy Programme for Recovery (EEPR).

    SHE Transmission ran a Knowledge Sharing seminar in Glasgow on 20th July 2015 to share key project outputs. A project overview paper and material from the seminar are available at the links below. 


      The EU capital grant allocation in 2009 was intended to support the inclusion of an offshore HVDC hub in the route of a subsea HVDC link already in planning by SHE Transmission and which would run close to the sites of potential future offshore wind farms in the Moray Firth, northeast Scotland. The hub was intended to facilitate an economic transmission solution for the area, including offshore windfarm connections, and provide a supply-chain opportunity for deployment of offshore multi-terminal HVDC technology.

      As at July 2015, SHE Transmission has an important Caithness to Moray subsea HVDC link under construction through the Moray Firth to accommodate the export of onshore renewable energy from Caithness. However,  prevailing circumstances in 2012 meant that when the link design was to be finalised it was done so without the offshore HVDC hub being included. Nevertheless, the pre-construction work co-funded by the EU has delivered several outputs of value to the future development of offshore grids:

        • Detailed Front End Engineering Design (FEED) reports for the offshore structure that represent a significant starting point for the engineering design of any future offshore HVDC substation. (Available on request, contact
        • An HVDC multi-terminal design specification (Available on request, – subsequently adapted and developed for use on the Caithness Moray HVDC scheme.
        • Demonstration that the necessary structures and HVDC technology for offshore HVDC grids can be engineered and are deliverable.
        • Justification for establishment of a National HVDC Centre to enable the modelling and simulation of multi-vendor HVDC systems whilst protecting the intellectual property of equipment suppliers.


          Co - funded by the European Union