SSEN Transmission will begin ground investigation work this week for the Stornoway Grid Supply Point (GSP) project, marking an important step in preparing for the site's future upgrade.

The work, carried out with support from appointed contractors, involves borehole drilling, trial pits, and peat probing to assess ground conditions ahead of the detailed design and delivery of the GSP extension and associated AC connections from the proposed Lewis Hub.

To allow these investigations to take place safely, temporary traffic management will be in place along the section of road from Lochside Arena to south of Loch Cnoc a Choillich, with traffic lights now in operation until 21 November. These investigations are being undertaken under permitted development activity as part of the project’s early development phase.

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Subject to planning consent, the Stornoway GSP upgrade will involve civil works to redevelop the existing site, including earthworks, drainage, and access road improvements. Two new 120MVA 132/33kV transformers will be installed within dedicated buildings, supported by a new control building housing upgraded protection and control systems. The existing 60MVA 132/33kV transformer, its building, and associated control facilities will be decommissioned. Around 500 metres of underground cable will connect the new transformers to the Lewis Hub.

The upgraded infrastructure will enable the connection of new renewable generation in the Western Isles and strengthen the resilience of the local electricity network.

For further information, visit Stornoway Grid Supply Point (GSP) Upgrade - SSEN Transmission.