Scottish Hydro Electric (part of Perth-based SSE) has got the go-ahead for
plans to reinforce the existing power cable transmission system in Grampian.
National Grid has recommended that work should proceed incrementally to
reinforce and increase the capacity of the existing North East and East
Coast transmission system.
The reinforcements are planned to take place in three stages; this will
initially see one of the overhead lines running south from Kintore upgraded
to enhance its capacity at the existing operating voltage of 275kV by 2023.
This line will then be upgraded along with the existing 275kV lines running
between Blackhillock substation near Keith and Kintore to operate at 400kV
in 2026.
The final stage will see the proposed subsea high voltage direct
current link from Peterhead to Hawthorn Pit in the north east of England
by 2028.
The existing 275kV East Coast transmission line runs from Kintore in the
north east of Scotland in SSEN’s transmission region to Kincardine in SP
Transmission’s region.
The existing 275kV transmission lines between Blackhillock and Peterhead
via Rothienorman and between Rothienorman and Kintore are also due to be
upgraded as part of the recommended reinforcements. While these lines
currently operate at 275kV, the towers are already capable of 400kV operation.
New substations will be required at Alyth, Kintore and Rothienorman.
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