The application follows on the recent completion of a £78m ($120m) upgrade to the overhead lines running between Dounreay, along the north coast of Caithness, and Beauly, more than 100km to the south in Inverness-shire.

The 1.2GW Moray Firth link will run between Spittal in Caithness – in Scotland’s extreme northwestern tip – and Keith, in the council area of Moray.

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