At National Grid Electricity Transmission, we’re investing around £1.3bn each year to adapt and develop our network - of pylons, overhead electricity lines, cables and substations - to connect new sources of low carbon energy to homes and businesses. 

The Brinsworth to Chesterfield and Chesterfield to High Marnham Projects (formerly Brinsworth to High Marnham) are separate but closely linked reinforcement projects. Together they would enable us to uprate the existing 275 kV overhead lines between Brinsworth and Chesterfield and Chesterfield and High Marnham to 400 kV.  

The Brinsworth to Chesterfield Project includes the construction of a new substation on land east of Long Lane in Brinsworth and another near Chesterfield in North East Derbyshire. These substations are required to uprate the Brinsworth to Chesterfield section of the overhead line from 275 kV to 400 kV. 

The Chesterfield to High Marnham Project is a separate reinforcement that would uprate the 275 kV line between Chesterfield and High Marnham to 400 kV. It will make use of the new substation near Chesterfield and a new substation at High Marnham in Bassetlaw.  

Together, these projects would provide the necessary increased capacity of the electricity transmission network, transporting clean energy from the North of England to homes and businesses in the Midlands and beyond and play an important role in building a more secure and resilient future energy system.  

Both Projects form part of The Great Grid Upgrade, the largest overhaul of the grid in generations, which would play a big part in the UK government’s plan to boost homegrown power. It would help the UK switch to clean energy and make sure our electricity network is fit for the future; carrying more clean, secure energy from where it’s generated to where it’s needed.

Overview of Projects  

The Brinsworth to Chesterfield Project involves constructing a new substation on land east of Long Lane in Rotherham, South Yorkshire.  This substation will enable us to uprate the existing 275 kV electricity transmission network between Brinsworth and Chesterfield to 400 kV.  This Project will also include works to connect the uprated network to a new substation near Chesterfield in Derbyshire. 

The Chesterfield to High Marnham Project involves constructing two substations, one near Chesterfield in Derbyshire and another in High Marnham, near Normanton on Trent in Nottinghamshire. These new substations will enable us to uprate the existing 275 kV electricity transmission network between Chesterfield and High Marnham to 400 kV.  

The delivery of both Projects will ensure that we continue to deliver electricity safely, reliably and efficiently to the customers and communities we serve - all while working towards building a cleaner, fairer and more affordable energy system for the future. 

The new substations will support the transfer of renewable energy and improve system resilience between the North of England and the Midlands and beyond. 

By getting greater capability out of the existing network, more electricity can pass through the transmission network and help accelerate the connection of clean energy projects. 
 

View a route map

Other Information

We undertook an extensive consultation with local residents, businesses and stakeholders in summer 2024. The feedback we received helped us to shape our proposals for both Projects and finalise our planning applications.  

Compulsory Purchase Order: Brinsworth to Chesterfield Refurbishment Project

On 1 October 2026 National Grid Electricity Transmission plc (“National Grid”) made The National Grid Electricity Transmission Plc (Brinsworth to Chesterfield Refurbishment Project) Compulsory Purchase Order 2026 (“Order”) to enable it to compulsorily acquire the land and rights over land necessary to refurbish infrastructure between Brinsworth and Chesterfield. The full Notice of Making of the Compulsory Purchase Order, including the description of the land and rights, details where the Order and map may be inspected and viewed online, and the final day and manner for Making objections, is available here.

National Grid is continuing to engage with all known affected landowners and, where required, the occupiers, to discuss the required rights and proposals to deliver the project. We will continue to negotiate in a collaborative and positive manner to conclude voluntary agreements with these parties. National Grid’s preference will always be to secure land and land rights on the basis of voluntary agreements with affected landowners/occupiers.

A copy of the Notice of Making of the Order has been served on all those with an interest in the land included in the Order. The Notice of Making has been published in local newspapers circulating within the vicinity of the land and site notices erected at intervals in or near to the land included in the Order.

Click the Document Library tab at the top of this page to view a copy of the Order as well as relevant documents, including the Statement of Reasons, Core Documents and maps that show the land included in the Order. These documents will also be made available at the following locations: 

Please check with the relevant venue for the most up-to-date opening times.   

Further information and guidance on the compulsory purchase process can be found here.

If you’d like to find out more information about the Order, please contact National Grid’s appointed land agent, Ardent Management, using the contact details below:

Telephone: 0203 442 8509 

Post: Ardent, 3rd Floor, 37 King St, Manchester, M2 7AT

Email: [email protected]

Compulsory Purchase Order: Chesterfield to High Marnham Refurbishment Project

On 15 October 2026 National Grid Electricity Transmission plc (“National Grid”) made The National Grid Electricity Transmission Plc (Chesterfield to High Marnham Refurbishment Project) Compulsory Purchase Order 2026 (“Order”) to enable it to compulsorily acquire the land and rights over land necessary to refurbish infrastructure between Chesterfield and High Marnham. The full Notice of Making of the Compulsory Purchase order, including the description of the land and rights, details where the Order and map may be inspected and viewed online, and the final day and manner for Making objections, is available here.

National Grid is continuing to engage with all known affected landowners and, where required, the occupiers, to discuss the required rights and proposals to deliver the project. We will continue to negotiate in a collaborative and positive manner to conclude voluntary agreements with these parties. National Grid’s preference will always be to secure land and land rights on the basis of voluntary agreements with affected landowners/occupiers.

A copy of the Notice of Making of the Order has been served on all those with an interest in the land which is included in the Order. The Notice of Making has been published in local newspapers circulating within the vicinity of the land and site notices erected at intervals in or near to the land included in the Order.

Click the Document Library tab at the top of this page to view a copy of the Order as well as relevant documents, including the Statement of Reasons, Core Documents and maps that show the land included in the Order. These documents will also be made available at the following locations:  

Please check with the relevant venue for the most up-to-date opening times.   

Further information and guidance on the compulsory purchase process can be found here.

If you’d like to find out more information about the Order, please contact National Grid’s appointed land agent, Ardent Management, using the contact details below:

Telephone: 0203 442 8509 

Post: Ardent, 3rd Floor, 37 King St, Manchester, M2 7AT

Email: [email protected]