Project Type: Transmission reinforcement
Location: Highland

Contact Details

Liaison Manager

Sally Cooper
Telephone: 07918 470281
Address: 10 Henderson Road, Inverness, IV1 1SN

Land Manager

Nicola Ross
Title: Wayleaves Officer
Mobile: 07825 015057
Address: 10 Henderson Road, Inverness, IV1 1SN
Status: Project assessment

Project Overview

SSEN Transmission are taking forward proposals for new substations required at Deanie, Culligran, Aigas and Kilmorack, collectively termed as The Beauly Cluster projects. Upgrades are required to the four existing substation assets from Deanie to Kilmorack Power Stations, which converts the 11 kilovolt (kV) output to 132kV for export to the Transmission network and consists of the construction of the four new separate but linked substations to provide hydro generation connections to the associated generator.

All have ageing assets, approximately 60 years old, which need to be replaced to meet modern standards and to provide reliability of supply

Project Elements

The following elements are anticipated requirements for each of the four new substations

  • Design and construction of a new offline substation compound with 132/11kV transformer. These will be separate but linked substations, with indicative platform sizes of 50 x 95 metres
  • A new 132kV circuit breaker and earth switch Control building housing 11kV switch gear and control protection equipment
  • Landscaping and biodiversity requirements
  • Permanent access to the sites
  • Upgrade of existing/new access tracks and temporary site compounds and construction laydown areas where required.


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 be holding public and online consultation events in June 2022.


For these we will welcome community members and all interested parties to visit either one of our face to face events or to attend our virtual online consultation to see our project proposals and to give feedback and ask any questions about the The Beauly Cluster.


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To make use of this function please click on the 'accessibility' button at the top right of the website. 

Who is Scottish and Southern Electricity Networks?

Scottish and Southern Electricity Networks is the trading name of Scottish and Southern Energy Power Distribution Limited, Scottish Hydro Electric Transmission plc, Scottish Hydro Electric Power Distribution plc and Southern Electric Power Distribution plc.

How are Transmission network upgrades paid for?

Investments in projects are made by SHE Transmission plc. Electricity transmission companies are authorised to recover the costs of such investments through 'use of system' charges which are levied by National Grid Electricity Transmission plc on generators and suppliers of electricity. Suppliers recover their costs from all electricity customers. In order to protect the interests of customers, the transmission companies have to demonstrate to the energy regulator, Ofgem (Office for Gas and Electricity Markets) that proposed investments are necessary, are efficient and are economical so that the charges which are ultimately levied on all electricity customers are justified.

This means SHE Transmission is subject to a funding mechanism established by Parliament and regulated by Ofgem. Cross subsidies between different businesses in the SSE group is not permitted.

How are proposals scrutinised?

The Scottish Ministers are responsible for determination of applications submitted under Section 37 of the Electricity Act 1989. Both statutory consultees and members of the public have the right to submit their representations on the application. All representations will be considered by Scottish Ministers in their determination of the application.
The Office for Gas and Electricity Markets (Ofgem), as the regulator, has to approve all investment so project proposals are developed under license conditions.
Preferred route corridors chosen will comply with revised ‘Holford Rules’ which are the recognised industry approach to routeing overhead lines amended to reflect Scottish circumstances.

What are The Holford Rules?

The Holford Rules originated in 1959 as the result of work by Lord Holford, a part-time member of the Central Electricity Generating Board (National Grid's predecessor). The Holford Rules have been augmented by both National Grid and SHE Transmission plc to reflect environmental legislation and best practice in recent years. We have continued to use them as a valuable set of guidelines for reducing the impact of our assets on landscapes.
The guidance recommends appropriate application of the Holford Rules to inform routeing. These rules advocate the application of a hierarchical approach to routeing which first avoids major areas of highest amenity, then smaller areas of high amenity, and finally considers factors such as backdrop, woodland and orientation. The Holford Rules apply the term ‘amenity’ to refer to environmental designations and classifications such as Natura 2000 sites, Sites of Special Scientific Interest (SSSI), Scheduled Monuments, Listed Buildings, National Parks.
The guidance also recognises that the key effect of overhead lines is visual and it advises that the routeing of overhead lines should consider the types of mitigation (screening) that could offset any visual effects.
In their National Policy Statement EN-5, the Government has stated that the Holford Rules “should be followed by developers when designing their proposals.” Their use is therefore Government policy, rather than a voluntary choice of SHE Transmission plc.

How and to what extent are electricity consumers' interests considered?

SHE Transmission are regulated by the Office for Gas and Electricity Markets (Ofgem), the regulator responsible for representing consumers' interests. Electricity consumer interests are therefore one of our key drivers and this is enshrined in our statutory duties under the Electricity Act.

In particular we have a statutory duty to develop, maintain and operate an efficient, economic and co-ordinated transmission system. Since the costs of these projects will ultimately be paid for by electricity consumers, we have a responsibility to take cost into account with due weighting in a comparison against other important factors.

What is the transmission network?

It’s the highest voltage electricity network in the UK – the ‘motorway network’ of the energy world. It transmits large quantities of electricity over long distances via wires carried on a system of mainly metal towers (pylons) and large substations. Transmission voltages in Scotland are 132kV, 275kV and 400kV. Larger generation schemes usually connect to the Transmission system.

The lower voltage parts of the system are called distribution networks. In Scotland, these local networks operate below 132kV whereas in England the distribution network includes 132kV. 

July 2022 - Feedback Period Closed

SSEN Transmission would like to extend thanks to all members of the public, local stakeholders and other interested parties who took the time to provide feedback on our proposals for the Beauly Cluster Asset Replacement projects. The feedback period for providing comments following our consultation events held in June 2022 has now closed. All responses received are being reviewed and assessed by the project team and will help to inform the designs. Further consultation events will be held later this year

June 2022 - Feedback Period Open

The project team would like to extend thanks to all members of the public and interested parties who took the time to come along to our public consultation events that were held in Kilmorack and Cannich Halls on the 22nd and 23rd June and to those that visited our virtual online consultation and submitted questions to the team via the live text chat function on the 28th June. We hope you found the consultations informative and beneficial. If you were unable to join any of the events, all the content that was presented on our proposals can be found within the project documentation tab of this website. We encourage those with an interest to share their views and feedback on our proposals by completing a feedback form which is on the project documentation tab. The feedback period is open until 1700 hrs, Thursday 21st July 2022.

Beauly Cluster Consultation Booklet June 2022

Related Projects: Beauly Cluster Asset Replacement Projects

File Type: pdf
Published: 13 Jun 2022
Beauly Cluster Banners

Related Projects: Beauly Cluster Asset Replacement Projects

File Type: pdf
Published: 22 Jun 2022
West of Beauly Cluster Site Selection Consultation Report
File Type: pdf
Published: 27 Jun 2022

Local People

Sally Cooper
  • Email:
  • Telephone: 07918 470281
  • Address: 10 Henderson Road, Inverness, IV1 1SN


Beauly Cluster Asset Replacement Feedback Form

Beauly Cluster Asset Replacement Feedback Form

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