Overview

At Brimsdown substation we will deliver the installation of a new cable sealing end compound at the existing OHL tower to the north east of the site, as well as the replacement of the two existing 275/132 kV transformers with two new 400/132 kV transformers (Spring 2026 and Spring 2027). 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.  

Timeline

• September 2024 – Vegetation clearance at Brimsdown substation 

• Spring 2026 - Installation of supergrid transformers (SGTs) and cable works at Brimsdown substation 

• Spring 2026 - Delivery of first SGT at Hackney and Brimsdown substations 

• Spring 2027 - Delivery of second SGT at Hackney and Brimsdown substations 

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.