Overview
Pre-application Public Events
New location for proposed switching station and overhead line changes
We invite all interested stakeholders to come along to the first-round of our pre-application drop-in public events where we will be presenting the proposed new location of the switching station and proposed changes to the 400kV overhead line alignment.
Our project team will be in attendance to discuss and listen to feedback on our proposals, ahead of further consultation later this year.
The events will be held on:
Wednesday 30 July 2025, 3-7pm at Glengarry Community Hall, Invergarry
and
Thursday 31 July 2025, 3-7pm at Fort Augustus Village Hall, Church Road, Fort Augustus.
If you have any questions please don't hesitate to contact our Community Liaison Manager: Sally.cooper@sse.com / Tel: 07918 470281
Proposed Loch Lundie Substation – Consultation period now closed
Thank you to all stakeholders who submitted feedback and took the time to come along to our final statutory consultation feedback event on February 26th in Glengarry Community Hall for the proposed Loch Lundie substation project.
We hope you found the event useful and informative. We intend to submit the planning application late Spring early Summer. Further public events for the proposed Coire Glas Switching Station and overhead line will be planned once the design is further developed.
About the Project
We have received a Transmission Owner Agreement to connect the Coire Glas Pumped Hydro Scheme to our network for December 2027. The scheme will be the first large-scale pumped storage scheme to be developed in the UK for more than 30 years and has a potential capacity of up to 1500 Megawatts (MW), which supports the UK's drive towards Net Zero by 2050. A degree of rationalisation of the existing infrastructure will form part of these works.
The scheme is located southwest of Laggan Locks, near to Loch Lochy, Highland. The connection is for a total of 1296MW Export/1360MW Demand and will be carried out in two phases.
- Phase 1 will see the connection of 612MW Export/660MW Demand in December 2027
- Phase 2 will see the connection of a further 684MW Export/700MW Demand in October 2029
Phase 1 (connection December 2027)
- A new Coire Glas 400kV external Air Insulated Switching Station (AIS), this will include 2 control buildings
- Approximately 3.5km of 400kV overhead line - this will be installed from the proposed Coire Glas switching station to a new substation located in the vicinity of Loch Lundie
- A new 400/132kV substation in the vicinity of Loch Lundie - this will comprise a control building, 2 transformers and outdoor AIS equipment
- Approximately 8.5km of 400kV of overhead line - this will be between the proposed Loch Lundie substation to the existing Fort Augustus substation at Auchterawe
Phase 2 (connection October 2029)
There will be no further development work in the Fort Augustus area as part of this project. The works will include:
- The upgrade of the Beauly - Denny Overhead Line second circuit to 400kV operation
- Construction of the Eastern HVDC Peterhead – Drax link
Find Out More About Beauly - Denny 400kV Upgrade
Community Engagement
Throughout the life of our projects, we aim to work positively with local communities and keep people informed about what we are doing. This is particularly important when we are developing a project and we want to understand what local people think about our plans.
We endeavour to take the time to discuss our proposals with local community councils, Ward Councillors, and the wider affected community and to carry out engagement at key stages, listening to feedback before finalising project plans.
We will do our best to answer any questions and address issues or concerns that are raised with us.
When our project progresses into construction, we will continue working closely with the local community to ensure that our work has as little impact on the lives of those living and working in the area, and as many long term positive effects as possible.
To see the latest design update, please see the presentation slides which can be found in the Project Documents tab on this webpage.
How we’re embracing artificial intelligence (AI)
We intend to use AI to assist our experienced teams in the analysis of your feedback, so we can categorise key points raised more quickly. You can learn more about how we’re utilising AI on this dedicated web page.
Project Updates
Featured updates
Featured updates for this project
Project updates
Documents
PAC 1 Consultation for Coire Glas Switching Station (new location) and Coire Glas 400kV overhead line
Final Pre-Application Feedback Consultation Events Documents
Loch Lundie Substation Consultation Documents
Section 37 documents
Section 37 non technical summary
Section 37 volume 1 main report
Section 37 volume 2 figures
Section 37 volume 3a Nature Scot standard visualisations
Section 37 volume 3b The Highland Council standard visualisations
Section 37 volume 4 technical appendices
Project documents
-
Coire-Glas-Connection-Project-Consultation-Booklet-July 23.pdf
- Type:
- Date:
- 27 July 2023
- Size:
- 26.6 MB
-
Coire Glas A5 Mailer-July23.pdf
- Type:
- Date:
- 27 July 2023
- Size:
- 252.4 KB
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Coire Glas A4 Poster-July23.pdf
- Type:
- Date:
- 27 July 2023
- Size:
- 230.3 KB
-
Report on Consultation
- Type:
- Date:
- 27 April 2023
- Size:
- 4.4 MB
-
Coire Glas A4 Poster
- Type:
- Date:
- 14 April 2023
- Size:
- 168.3 KB
-
Coire Glas Connection Project Consultation Booklet
- Type:
- Date:
- 14 April 2023
- Size:
- 18.3 MB
-
Coire Glas Connection Presentation January 2022
- Type:
- Date:
- 16 September 2022
- Size:
- 1.7 MB
-
Coire Glas Connection Project Consultation May 2022
- Type:
- Date:
- 16 September 2022
- Size:
- 970.4 KB
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Coire Glas Grid Project Consultation Appendices
- Type:
- Date:
- 16 September 2022
- Size:
- 4.6 MB
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Coire Glas Grid Project Consultation Figures
- Type:
- Date:
- 16 September 2022
- Size:
- 34.1 MB
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Corie Glas Connection Project Consultation Booklet May 2022
- Type:
- Date:
- 16 September 2022
- Size:
- 4 MB
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Fig 5 Preferred Alignment
- Type:
- Date:
- 16 September 2022
- Size:
- 2.2 MB
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Figure 131 Viewpoint Auchterawe Road At Torr Dhuin
- Type:
- Date:
- 16 September 2022
- Size:
- 6.3 MB
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Figure 2a Coire Glas Grid Connection Indicative Route and Substation Options
- Type:
- Date:
- 16 September 2022
- Size:
- 2.6 MB
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