Overview

At Hackney substation we will be removing two 400/275kV and two 275/66kV transformers, replacing them with two 400/66 kV transformers. These will be gas insulated and free of SF6, a highly potent greenhouse gas which is now being phased out of most substation builds. The new transformers will be quieter than the existing units, reducing noise impacts on surrounding residents and park users. 

One transformer will be delivered in Spring 2026, with the second in Spring 2027. Additional minor works will be undertaken within the substation boundaries. 

To bring the new transformers into the site, access will be provided via the existing park path, highlighted in the image below. A small laydown area will be required on the green space adjacent to the park for around 72hrs during the removal of the existing transformers and installation of the new transformers. 

We are holding discussions with Hackney Council around how we could provide funding to improve the basketball area with additional outdoor facilities. 
 

Timeline

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

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

Address

Hackney Substation

Lower Clapton

London

E5 0BU

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.