Beauly-Denny 400kV Overhead Line
Beauly to Denny, Scotland · 2011–2015 (Fully operational in 2015) [1] [2] · Approximately £290 million (Balfour Beatty contract for overhead line construction, part of a larger £1.1 billion investment by SHE Transmission) [3] [4]
The judgement call
Account-gated at launchThe project faced extensive public inquiry and legal battles, leading to some sections being undergrounded to mitigate visual impact. It was a critical upgrade to enable the transmission of renewable energy from the north of Scotland to demand centers further south. [5]
Key engineering challenges
Significant public opposition and legal challenges due to visual impact on sensitive landscapes. [5] - Construction in challenging and remote Scottish terrain, including mountainous areas. - Integration of the new 400kV line with existing infrastructure and environmental mitigation measures.
Project facts
- Client / owner
- SSEN Transmission (formerly SHE Transmission)
- Lead contractor
- Balfour Beatty (for overhead line construction) [3]
- Lead designers
- —
- Project type
- upgrade / new build
- Scale
- 137 miles (approx. 220 km) long; 400kV; double circuit overhead line [1] [2]
- Disciplines
- electrical; civil; structural; environmental; project management
- Standards & frameworks
- UK grid codes, relevant environmental regulations.
Sources: SSEN Transmission: Beauly Denny 400kV Upgrade (https://www.ssen-transmission.co.uk/projects/project-map/beauly-denny-400kv-upgrade/?panel=panel-2) [1] - Wikipedia: Beauly–Denny Link (https://en.wikipedia.org/wiki/Beauly%E2%80%93Denny_Link) [2] - Balfour Beatty: Balfour Beatty awarded multi million pound Beauly-Denny replacement electricity transmission line contract (https://www.balfourbeatty.com/media-centre/latest/balfour-beatty-awarded-multi-million-pound-beauly-denny-replacement-electricity-transmission-line-contract/) [3] - HVDC Centre: Caithness-Moray HVDC Project During Delivery (https://www.hvdccentre.com/hosting/caithness-moray/) [4] - Durham University: The Case of the Beauly–Denny Project in Scotland (https://durham-repository.worktribe.com/OutputFile/1413864) [5]