Overview

Waltham Cross substation will be expanded in order to enable the delivery of a new 10 bay substation extension. The eastern 275 kV substation will be demolished as part of the works. In addition, some new tower installations and some existing tower removals will be required. As part of the works, we will also be making improvements to the car park that adjoins the site and is frequently used by anglers.  

Initial vegetation clearance has been undertaken with lay down area construction anticipated to commence in Autumn 2024. National Grid will look to best minimise any impacts on Lee Valley Park users and will work closely with the Lee Valley Regional Park Authority throughout the duration of the works. 
 

Timeline

• January 2024 – Phase 1 vegetation clearance at Waltham Cross substation

• Autumn 2024 - Commencement of lay down area works at Waltham Cross substation 

• 2025-2027 - Reconductoring of 4ZM line between Pelham and Waltham Cross 

Address

• Waltham Cross Substation

• Waltham Cross

• Waltham Abbey

• EN10 6EY 

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.