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Work set to begin between Dounreay and Mybster to prepare for overhead line upgrade

The next phase of work on Scottish Hydro Electric Transmission’s Caithness-Moray project is set to begin next week.

To date, construction activity has been focused on the Spittal site which will be at the heart of the north’s renewed electricity system and the underground cable route from there to Noss Head, north of Wick.

To enable efficient transmission of electricity to the Spittal site, the existing overhead line network between Dounreay and Mybster is set to be upgraded, with the addition of a new substation at Geiselittle, south of Thurso, and the eventual removal of the existing substation immediately next to the A9.  

A new overhead line, supported by steel towers, will be installed capable of operating at 275 kilovolts.  Once the new line is complete, the existing 132 kilovolt overhead line between Dounreay and Spittal will be dismantled and removed. 

Bellmouth field entrances and other associated public road improvements along the route will start from Monday 1 June, followed by work to establish access tracks to the construction sites of individual new steel towers.

The Caithness-Moray project as a whole will enables a further 1200MW of wind, wave and tidal energy to be connected and is due for completion in 2018.


SHE Transmission’s Project Manager for the Dounreay-Mybster work Ian Clark  said: 

“We recognise construction work will cause some disruption so we plan our work carefully to keep this to a minimum. 

“We also aim to be approachable, so we can identify and respond to any issues that arise during our work. Anyone with any queries or concerns can get in touch via our website at www.ssepd.co.uk/CaithnessMoray or by contacting our Liaison Manager on 07825 015507.”