Overview
At Brimsdown substation we will install a new cable sealing end compound at the existing overhead line (OHL) tower to the north east of the site. This will allow for secure connections between overhead line circuits to underground cables, improving reliability and reducing maintenance.
Additionally we will replace the two existing 275/132 V transformers with two new 400/132 kV supergrid transformers in Spring 2026 and Spring 2027. This will enable the substation to operate at a higher voltage, enhancing network stability and future-proofing the infrastructure to accommodate growing energy needs.
The site will be accessed via a new access road adjacent to the current footpath. Pedestrian access along this path will still be enabled via a fenced off area.
For the latest updates on work in these areas, click on the relevant location below:
Timeline
| September 2024 | Enabling works at Brimsdown substation. Enabling works are preparatory activities such as vegetation clearance, which is necessary before the main substation upgrades can begin. |
| Spring 2026 | Delivery and installation of supergrid transformers (SGTs) and cable works at Brimsdown substation |
Address
Brimsdown Substation, Brimsdown, Mollison Ave, Enfield, EN3 7NJ
Community involvement
We are committed to engaging with communities to ensure the projects deliver other localised benefits, including social benefits via our Community Grant Programme and environmental benefits via biodiversity net gain (i.e., increasing biodiversity in the area we are operating in above what is currently there).
The Community Grant Programme is run by the National Grid Electricity Transmission (NGET) business. The programme is aimed at community organisations and charities in areas where our work is impacting local people through our operations and construction activities.
Communities impacted by the maintenance of existing infrastructure (e.g. refurbishment of overhead lines or substations resulting in road closures and other impacts) can apply for grants of up to £10,000.
You can read more about the Community Grant Programme here: https://www.nationalgrid.com/responsibility/community/community-grant-programme.
Contact us
If you would like any further information or to speak to a member of the community relations team about the works, please use the contact form on our website or via the contact details below.
Email: [email protected]
Phone: 0800 279 3408