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  • Rousay-Westray Cable Replacement

  • Project overview

    Work to install a 33kV electricity cable measuring 10.8km between the islands of Rousay and Westray was completed in 2018. It replaced the existing cable which was installed in 1983 and was nearing the end of its operational life.

    The new submarine cable was installed along a similar route to the existing cable and buried into the sand if the natural environment allowed. Where seabed conditions were not suitable for burial, rock bags have been placed on top of the cable in pre-determined locations to prevent tidal movement and to provide additional protection. 

    At both shore ends, the cable has been buried underground. The installation approach taken reduces risks and provides a cost-effective cable crossing from island to island.

    The installation method is based on a cost benefit analysis undertaken by SSEN to determine the best value method to replace the submarine electricity cables that serve the islands. The analysis considered all the feedback received during extensive local consultation and events, alongside detailed technical and environmental surveys.

    The cable replacement has secured the power supplies to the island of Westray and supports the security of supply to the neighbouring islands.

    Stage 1