SSEN Transmission submits planning application for Kinardochy to Errochty underground cable works

24 April 2026

SSEN Transmission has submitted a planning application for infrastructure and associated works relating to a new underground electricity transmission cable project between Kinardochy and Errochty substations in Perthshire.

The proposed Kinardochy to Errochty Underground Cable project, located near Tummel Bridge, comprises two 132kV underground cable circuits between the substations, each running for approximately 4km.

The project forms part of our proposed upgrade of the Beauly to Denny overhead line from 275kV to 400kV operation, supporting national clean power and energy security ambitions.

The planning application submitted to Perth and Kinross Council includes proposals for temporary and permanent access tracks, along with temporary construction compounds to enable the installation. Two temporary bellmouth junctions would also be created off the B846 public road.

A construction traffic management plan would be in place for the duration of the works to help mitigate any disruption to the local road network.

The application includes an outline development boundary for the project, showing the general area where works would take place. This does not represent the final site boundary, as all temporary construction areas and access tracks would be reinstated following commissioning.

The application follows three pre-application consultation events held last year, where members of the public were able to view the plans and discuss the proposals with project staff.

Kevin Rooney, Project Manager from SSEN Transmission, said:

“The proposed underground cable project is a key part of our plans to upgrade the Beauly to Denny overhead line to 400kV operation, helping to connect new renewable energy and support national clean power and energy security ambitions.

To support the cable installation, we need to put in place access tracks and construction compounds for the duration of the works. Most of this infrastructure will be temporary and reinstated once construction is complete.

This application follows a detailed development process, balancing technical and environmental requirements alongside local feedback. We would like to thank everyone who took part in our consultation events, whose views have helped shape our proposals.”