Project Type: Transmission reinforcement
Location: Perth & Kinross

Contact Details

Liaison Manager

Louise Anderson
Title: Community Liaison Manager
Telephone: 07384 454233
Address: Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ

Land Manager

Robin Cameron
Title: Land Manager
Mobile: 07500 912921
Address: Inveralmond House, 200 Dunkeld Perth, PH1 3AQ
Status: Project assessment

2nd public consultation event

In recognition of feedback received from our previous consultations held in April this year plans have been developed for the reinforcement works required at Errochty switching station and SSEN Transmission are pleased to be hosting a face to face public consultation feedback event to present the updated design and gain views and feedback on our updated proposals to facilitate the installation of two new 90MVA 132/33kV transformers, along with appropriate 132kV and 33kV switchgear to create a new Grid Supply Point (GSP) adjacent to the existing Errochty 132kV substation in Tummel Bridge.

We would like to extend an invitation to all interested parties to attend. We would like to ensure we progress with the most appropriate option and welcome the views of the local community and interested parties to have their say.

The open-door drop-in face to face consultation will be held on the below date:

Wednesday 6 July between 2-7pm at Kynachan Hall, Tummel Bridge

We understand and recognise the value of the feedback provided by members of the public during all engagements and consultations. Without this valuable feedback, the project development team would be unable to progress projects and reach a balanced proposal.  Your views and comments can be provided to the project team by completing a feedback form which can be accessed here.  We will be seeking feedback from members of the public and Statutory Bodies by 22 July 2022.

Project overview

SSE Renewables are looking to increase their load capacity at Tummel Power Station, driving a connection modification application from our sister company SSEN Distribution, which requires an increase in the transformer capacity at Tummel Bridge. 

It is proposed that a new site, adjacent to the existing Errochty 132kV substation, be developed to facilitate the installation of two new 90MVA 132/33kV transformers, along with appropriate 132kV and 33kV switchgear to create a new Grid Supply Point (GSP).

This new Errochty GSP will provide a 33kV connection point, to accommodate all generation and demand currently served by Tummel Bridge GSP, including the requested capacity increase for Tummel Bridge Hydro Power station.  

Site selection - Why Errochty

There is insufficient room at the existing site; Tummel Bridge GSP to accommodate fire pools to meet current standards. The site is also over sailed by 132kV overhead lines, providing a considerable construction challenge, therefore the proposal is for the new transformers to be relocated to Errochty along with construction of a new 33kV switch room for SSEN Distribution.

Direct upgrading of the two 21MVA transformers currently in place at Tummel Bridge GSP was considered as a possible option. This option was however discarded due to the lack of available space at Tummel bridge GSP for 90MVA transformers.

The site of the existing Tummel Bridge GSP will be decommissioned and cleared of SSEN Transmission assets, as part of the work.

Transformers - What they do

Transformers allow us to increase and decrease the voltage of electricity when required, this allows delivery of electricity across the transmission network to be much more manageable and efficient.

Transformers vary in size, and in some cases, can require specialist haulage equipment to transport them to site. Our Community Liaison Team will work alongside all local communities that may be affected by the delivery of a Transformer to ensure that any disruption is kept to a minimum.

External 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 proposal and we want to understand what local people think about our plans.

We endeavour to take the time to discuss proposals with local community councils, encourage engagement from the wider community and listen to the feedback we receive.

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.

Recite me

To support everyone online, we provide accessibility and language options on our website through ‘Recite Me’. The accessibility and language support options provided by ‘Recite Me’ include text-to-speech functionality, fully customisable styling features, reading aids, and a translation tool with over 100 languages, including 35 text-to-speech. Please select “Accessibility” on our website to try out our inclusive toolbar.

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

The data in this map is provided for indicative purposes only and may be subject to change. Scottish Hydro Electric Transmission plc do not accept responsibility for its accuracy, completeness or validity. The data should not be copied, reproduced or utilised externally without permission.

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.

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. 

2nd Public consultation event

In recognition of feedback received from our previous consultations held in April this year plans have been developed for the reinforcement works required at Errochty switching station and SSEN Transmission are pleased to be hosting a face to face public consultation feedback event to present the updated design and gain views and feedback on our updated proposals to facilitate the installation of two new 90MVA 132/33kV transformers, along with appropriate 132kV and 33kV switchgear to create a new Grid Supply Point (GSP) adjacent to the existing Errochty 132kV substation in Tummel Bridge. We would like to extend an invitation to all interested parties to attend. We would like to ensure we progress with the most appropriate option and welcome the views of the local community and interested parties to have their say. An information poster providing more detail can be downloaded from the project documentation tab of this webpage.

Consultation feedback

The feedback period on our proposals that we presented at public consultations across 20 and 21 April for the Errochty GSP project is now closed. Thanks to everyone who took the time to provide feedback. All responses received will now be reviewed ahead of a second round of consultation events in July.

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 event that was held on 20 April and to those that visited our virtual online consultation and submitted questions to the team via the live text chat function on 21 April. 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. The feedback period is open until 13 May 2022.
Feedback form

Proposal of Application Notice

We have now submitted the Proposal of Application Notice (PAN) to Perth and Kinross Council under the terms of the Town and Country Planning (Development Management Procedure)(Scotland) Regulations 2013. This notice states our intent to submit a planning application so that land adjacent to the existing Errochty 132kV switching station, be developed to facilitate the installation of two new 90MVA 132/33kV transformers, along with appropriate 132kV and 33kV switchgear to create a new Grid Supply Point (GSP) .

Public consultations

SSEN Transmission are hosting both face to face public consultations along with a virtual online consultation exhibition to gain views and feedback on our proposals to facilitate the installation of two new 90MVA 132/33kV transformers, along with appropriate 132kV and 33kV switchgear to create a new Grid Supply Point (GSP) adjacent to the existing Errochty 132kV substation in Tummel Bridge. We would encourage members of the local community and all interested parties to attend the events. To find out more please download the consultation information poster from the project documentation section or view the project overview section of this website via the below link .
Project overview

July 2022 public consultation information poster

Related Projects: Errochty GSP

File Type: pdf
Published: 17 Jun 2022
April 2022 Public Consultation Booklet

Related Projects: Errochty GSP

File Type: pdf
Published: 04 Apr 2022
April 2022 Public Consultation Banners

Related Projects: Errochty GSP

File Type: pdf
Published: 04 Apr 2022
Proposed Layout

Related Projects: Errochty GSP

File Type: pdf
Published: 04 Apr 2022
April 2022 Public Consultation Information Poster

Related Projects: Errochty GSP

File Type: pdf
Published: 17 Feb 2022

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