The North London Reinforcement project will see work being conducted on the existing overhead line between Pelham and Rye House substation and Hackney substation.

The works will comprise of upgrading the existing 275kV overhead line to a 400kV operation from Pelham and Rye House substation, Hertfordshire to Waltham Cross substation in Epping Forest, through Enfield, and then to Tottenham substation in Haringey, thus avoiding the need for a new overhead line connection.

There will also be associated works to the substations at Pelham and Rye House, Waltham Cross, Brimsdown, Tottenham and Hackney.

The North London Reinforcement Project was approved in May 2014 by the Secretary of State and then subsequently put on hold by National Grid following a change in energy demand. Given Government targets to connect 50GW of offshore wind by 2030, the project has since been brought forward as part of the Accelerated Strategic Transmission Investment programme.

The North London Reinforcement Project will provide the necessary upgrade to enable future energy demands whilst playing a key role in helping the UK achieve targets for renewables and net zero.
 


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

 

Frequently asked questions

What works will take place as part of the North London Reinforcement project?

The project involves reinforcing the substations at Pelham and Rye House, Waltham Cross, Brimsdown, Tottenham and Hackney. We will also be replacing the existing 275KV overhead line with a 400kV overhead line that runs from Pelham Rye to Hackney.

This upgrade is required to increase the capacity of electricity transmission and enable future energy demands utilising the existing infrastructure where possible, taking renewable energy from offshore wind.

Will the construction work cause disturbance to the local community?

We always plan to complete any work with the minimum of disturbance for people living near to our sites.

The first noticeable work will be vegetation clearances next to the Pelham and Rye House substation and Waltham Cross substation, taking place from January 2024 to March 2024.

To allow safe access to the site we will unfortunately have to close access to the car park next to the Waltham Cross substation which is currently used by the local angling club. 

We are committed to working with our neighbours to ensure that disruption and visual impact of our activity is kept to a minimum.

What are the timings for your work?

Vegetation clearance work will take place between January 2024 and March 2024. The clearance work is being conducted between these months to protect breeding seasons for local wildlife.

The clearance works will be conducted during normal working hours, 8am- 5pm.

Following the vegetation clearance, the substation expansion work at Waltham Cross will begin in May 2024.

The North London Reinforcement project will be completed by the end of 2027.

Will you keep us up to date as the project progresses?

Yes, we’ll continue to keep local communities up to date.

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

How will the project support the UK's renewable energy and net zero targets?

The North London Reinforcement project will support the UK’s net zero targets by facilitating the transmission of electricity generated by off shore wind. It will also future proofing the route and ensure it remains operational for decades to come. 

How will the vegetation clearance impact local wildlife and biodiversity?

To reduce the impact on local wildlife and biodiversity, the vegetation work taking place at Waltham Cross is being conducted between January and March. This is to protect breeding seasons along with taking into consideration the peak season of park users. Three ecology reports have been completed as well as a Habitats Regulations Assessment which has been accepted by Natural England in line with the clearance. We will also have an ecologist onsite for the works if required.

National Grid have set a 10% Net Gain in environmental value target on all construction projects and is aiming to achieve 15% on this project. We are still in discussions with Lea Valley Park about how and where biodiversity net gains following this project will take place.
 

What measures are being taken to minimise disruption during construction?

Work to clear the vegetation next to Waltham Cross substation will be conducted in a clearly defined area and will not affect other areas of Lea Valley Park.

A clearly defined access route alongside the River Lea will ensure all traffic enters the site via one route, reducing impact on the wider Park. We are aiming to only dispose of waste from the vegetation clearances during certain hours to reduce continuous noise and minimise construction traffic interactions.