Contact Us
We are a considerate constructor and want to help answer any questions you may have.
Have a query?
You can email us at LCD@sse.com
Have a complaint?
You can email us at customercomplaints@ssen.co.uk or call us on 0800 980 1395.
Concerned about vulnerability in a power cut?
Visit www.ssen.co.uk/priorityservices or call us on 0800 284 3259.
Beginning in January 2026, the project will install a new 33kV underground electricity cable between Stokenchurch Substation and High Wycombe Substation, helping to improve the reliability and capacity of power supplies for homes, businesses and public services across the area. The new cable will improve network capacity and resilience, ensuring the local electricity network can meet growing demand now and in the future.
Why is this investment is needed?
Electricity is playing an increasingly important role in our daily lives, from how we heat our
homes to how we travel. Buckinghamshire is also growing rapidly, with thousands of
new homes, businesses and public services needing reliable, sustainable power.
This project will:
• Increase capacity across the local network.
• Reduce the risk of outages.
• Support the transition to a low-carbon future.
• Help enable electric vehicle charging infrastructure.
• Futureproof power supplies for housing and economic growth.
By investing now, SSEN is helping to futureproof the electricity network for homes, businesses and public services across Buckinghamshire.
Where are we working?
The new underground cable route is approximately 13.5 kilometres (8.4 miles) long and will run:
• From Stokenchurch Substation, Marlow Road (B482).
• Through Stokenchurch and along key local roads including sections of the A40.
• To High Wycombe Substation, Coronation Road.
The majority of the works will take place within the highway, with only short sections carried out at any one time to reduce disruption.
Our Cable Route
What can I expect during the works?
We understand that roadworks can be disruptive. We are working closely with Buckinghamshire Council and other stakeholders to minimise inconvenience wherever possible.
During the works you can expect:
- Temporary traffic management, including traffic lights in place 24/7 where required.
- Clear signage in advance of works.
- Works planned in short sections to keep disruption localised.
Power Cuts
There are no planned Power Supply Interruptions (PSI) scheduled to take place during the works, but anyone who has concerns about vulnerability during power cuts should register for our Priority Services.