Your browser does not support JavaScript or has it disabled. To enable full functionality of this site it is necessary to enable JavaScript.
  • Submarine Electricity Cables

    Information Centre

  • About us

    We are part of Scottish and Southern Electricity Networks, operating under licence as Scottish Hydro Electric Power Distribution plc (SHEPD). We are responsible for monitoring the efficiency and integrity of the submarine electricity cable network which provides power supplies from the mainland to fifty nine Scottish Islands, including the Inner and Outer Hebrides, Arran and the Orkney Islands.


    Subsea Cable Ship

    We also serve the Shetland Islands, which run as a separate electrical system without a connection to the mainland.
    To ensure these island communities continue to receive a safe and reliable source of electricity we run a programme of inspections and when necessary install new cables to replace those coming to the end of their operational life.

    A significant programme of investment is currently underway to ensure the fifty nine Scottish Islands who depend on us continue to receive a safe a reliable supply of electricity through our submarine cables.

    Find out more about how we manage our Submarine Electricity Cables Programme. 

  • More about what we do

  • To help us understand the impacts that our cable installation decisions have, we work proactively with our regulators, customers and stakeholders to better understand the impacts our engineering decisions can have on the safety of mariners, energy costs for communities we serve, on local and national economic activity and on the natural environment. 

    We have developed a Cost Benefit Analysis Model and apply this to determine the optimum installation method for our cables.

    For more information about Cost Benefit Analysis Model, you can view the summary paper here or read the full method paper here.

  • Document Library

    Find out about all our work and policies, including the latest consultation with fishermen across Scotland.

  • submarine cable area