Windyhill-Lambhill-Denny North Upgrading Project
SP Energy Networks is upgrading the grid in central and southern Scotland.
With total electricity demand set to double by 2050, we need a grid that’s ready to meet future energy needs, while boosting the nation’s energy security for generations to come.
To help make this happen, we need to uprate our existing overhead lines between Denny North, Lambhill and Windyhill substations and complete some internal substation works. This will help strengthen the electricity transmission network and guarantee secure energy supplies for the future. This existing infrastructure feeds the wider Dunbartonshire, City of Glasgow and Renfrewshire transmission networks.
All relevant materials will be made available on this page prior to the consultation period commencing on Tuesday 3rd November
Public Consultation Advert 2026
Proposal
We need to uprate and refurbish the existing overhead electricity lines from 275 kV to 400 kV between Windyhill and Lambhill substations (XE Route) and
Lambhill and Denny North substations (XD Route). This will help strengthen the electricity transmission network and help guarantee
secure energy supplies for the future. Work will include upgrades to tower foundations, access routes and upgrades at Windyhill, Lambhill and Denny North substations to enable the network to operate at 400 kV (400,000 volts).We are now consulting on our outline plans and want to hear from local communities before we further develop our proposals.
Our upcoming consultation period runs from Tuesday 3rd November to Monday 7th December 2026.

OHL
Further information on the Overhead Line Changes will be uploaded here prior to the beginning of the consultation period.
Substation Changes
Further information on the Substation Changes will be uploaded here prior to the beginning of the consultation period.
Documents
All documents that will be presented at our public consultation events will be made available here prior to the beginning of the consultation period.
FAQs
FAQ's will be uploaded here prior to the beginning of the consultation period.
Have your say
We are running in person Public Exhibitions at the following dates and times:
Tuesday 3 November 2026
2pm - 7pm:
Dunipace Football Club,
3 Town House St
Denny FK6 5DX Wednesday 4 November 2026
2pm - 7pm
Clydebank & District Golf Club
Glasgow Rd
Hardgate
Clydebank G81 5QY
Monday 9 November 2026
2pm - 7pm: Monday 9 November 2026
Lambhill Stables,
11 Canal Bank North,
Lambhill Bridge
Glasgow G22 6RDInformation on how to provide a response digitally will be provided here prior to the beginning of the consultation period.
Please note that any data collected through your consultation feedback will only be used to help understand views regarding the DLUP Project. The data will not be used for any other purposes. The data will be collated and analysed to help in the reporting of consultation feedback.
SP Energy Networks is committed to respecting your privacy and will comply with all applicable data protection and privacy laws. We’re consulting you to get your views on the proposed DLUP Project, so we may need to share your information with certain other bodies for the purposes of the consultation and for creating reports. These are: other Scottish Power Group companies, third party service providers, contractors or advisors who provide services to us; relevant planning authorities.
For further information on our Privacy Policy, please visit https://www.spenergynetworks.co.uk/pages/privacy.aspx
What Happens Next
Following our initial public consultation, we will continue to develop our proposals, taking feedback from communities and stakeholders into consideration, alongside ongoing environmental assessment and engineering work. Once we have refined our proposals, we will hold a further public consultation to share our updated proposals and explain how your feedback has helped to shape their development.
We are seeking to submit an application under Section 37 of the Electricity Act 1989 and apply to the Scottish Ministers for deemed planning permission under Section 57(2) of the Town and Country Planning (Scotland) Act 1997 for consent to construct the project. This will be submitted along with an Environmental Impact Assessment (EIA) Report which will assess and report on the project’s potential environmental impacts.
All comments made through this consultation are not formal representations to the consenting authority. You will have an opportunity to make formal representation once we submit a Section 37 consent application for all proposed works to the Scottish Government’s Energy Consents Unit (ECU).