Great Britain is undergoing an energy transformation, with the energy we use increasingly coming from more secure, cleaner, home-grown sources. National Grid is at the heart of this transition, with a plan to invest around £31 billion in our electricity transmission network over the next five years to 2031. We’re delivering infrastructure that will ensure reliable, cleaner and increasingly affordable energy for customers and communities.
Working with communities and local people
It’s also important to keep the impact on bills, people, places and our natural environment as low as possible. It’s our role to future-proof our energy networks in the most cost-effective way possible.
As we upgrade the electricity transmission network and develop proposals to connect new electricity generation sources, we work with a wide range of stakeholders and experts. Listening to the views of communities where the network needs to be developed gives us valuable feedback and insight as we look to minimise those impacts.
We work closely with local communities to make sure we minimise construction impacts whenever possible, and support community initiatives in areas where we’re working to deliver social, economic or environmental benefits.
Many of our projects are fantastic feats of engineering, delivered by a diverse and varied workforce using world-leading technology, innovation and expertise. Working closely with schools and educational organisations, we look for opportunities to use our projects to help inspire the next generation of budding engineers and provide real opportunities for local people to grow their potential and capabilities – helping deliver a cleaner future in a way that benefits us all.
Share your views
Where our plans affect you or your community, we welcome your opinions on our proposals. Your views are important to us and will help shape our plans as our infrastructure projects develop. Explore the projects below for more information and details of how to contact us.
Our projects
Weston Marsh to East Leicestershire
We are proposing roughly 60 km of new 400 kV overhead line which would run east to west from the infrastructure at Weston Marsh substation(s)
Weston Marsh to East Leicestershire
Chesterfield to Willington
The Chesterfield to Willington project will reinforce the electricity transmission network and provide the necessary increased capacity between the North and the Midlands.
Chesterfield to Willington
Brinsworth to High Marnham Uprating
We propose an uprating of the existing 275kV overhead lines to facilitate a transmission load of 400kV and the development of three new substations to help carry more green power f...
Brinsworth to High Marnham Uprating
Braybrooke Network Rail Connection Project
We are building a new electricity substation near Braybrooke, on the outskirts of Market Harborough in Leicestershire.
Braybrooke Network Rail Connection Project
West Burton to Ratcliffe-on-Soar
West Burton to Ratcliffe-on-Soar is a project to upgrade approximately 100 kilometres of existing single circuit lines to enhance capacity and resilience across the network, linking West Burton, High Marnham, Stoke Bardolph and Ratcliffe-on-Soar.
West Burton to Ratcliffe-on-Soar
Navenby Substation
National Grid Electricity Transmission is currently investigating suitable sites close to Navenby in Lincolnshire for a proposed new substation to connect to several proposed solar...
Navenby Substation
Bicker Fen – transformer installation for a new customer connection
Over the next few years we’ll invest in new equipment at Bicker Fen substation.
Bicker Fen – transformer installation for a new customer connection
Cottam to Wymondley Overhead line refurbishment
Over the next 2 years, we will be completing some essential refurbishment work to ensure that the line continues to provide a safe and reliable supply of electricity to homes and b...
Cottam to Wymondley Overhead line refurbishment
Norwich to Tilbury
The Norwich to Tilbury project is a proposal to build a new high voltage network reinforcement between Norwich, Bramford and Tilbury.
Norwich to Tilbury
Sea Link
National Grid Electricity Transmission is currently developing proposals for Sea Link, a new planned high voltage undersea electricity link between Suffolk and Kent.
Sea Link
Bramford to Twinstead
We need to strengthen the network here to increase the network capability in the region to carry the clean green energy that is proposed in East Anglia.
Bramford to Twinstead
Bramford to Norwich overhead line refurbishment
In May 2024, we completed the refurbishment of the existing 400,000 volt overhead line between Bramford substation in Suffolk and Norwich substation in Norfolk.
Bramford to Norwich overhead line refurbishment
Kiln Lane substation
We are building a new 400 kV substation near Friston, which will connect ScottishPower Renewables' (SPR) East Anglia ONE North and East Anglia TWO offshore wind farms to our transmission network.
Kiln Lane substation
Norwich Main substation extension
Our existing substation at Norwich Main has been in service for around 50 years. The time has now come when we need to extend the site to enable new sources of electricity generation to connect into the grid, including the Hornsea Project Three offshore wind farm, and the Equinor Sheringham Shoal and Dudgeon wind farm extensions.
Norwich Main substation extension
Sundon substation
We need to upgrade our existing Sundon substation near the village of Chalton and adjacent to the M1 motorway in Bedfordshire.
Sundon substation
Walpole Substation Expansion
Walpole Substation Expansion is a proposal to upgrade and expand the existing Walpole substation. The project will enable the connection of new renewable energy sources, manage electricity flows across the network and support growing demand for power.
Walpole Substation Expansion
North London Reinforcement
The North London Reinforcement project will see work being conducted on the existing overhead line between Pelham and Rye House substation and Hackney substation.
North London Reinforcement
London Power Tunnels
In Spring 2020 we embarked upon a seven-year, £1 billion project, to rewire South London via deep underground tunnels. This vital work will help keep Londoners connected to safe an...
London Power Tunnels
North West London Upgrade (NWLU)
The North West London Upgrade is a major investment into the electricity infrastructure running between Sundon in Bedfordshire and St John’s Wood in London.
North West London Upgrade (NWLU)
Blyth Substation
We are planning essential upgrades to Blyth Substation to connect new customers to our electricity network and meet future energy demand.
Blyth Substation
South Shields Substation
This work will include the erection of two new compounds on land already owned by National Grid for the installation of this equipment, and for some other associated works includin...
South Shields Substation
Eastern Green Link 3 and Eastern Green Link 4
The Eastern Green Link 3 (EGL3) and Eastern Green Link 4 (EGL4) projects are needed to increase network capability to connect the numerous new offshore wind farms that are being de...
Eastern Green Link 3 and Eastern Green Link 4
Grimsby to Walpole
The Grimsby to Walpole upgrade is a proposal to build a new high voltage overhead line in Lincolnshire, including building new pylons and new substations. It is needed to increase ...
Grimsby to Walpole
North Humber to High Marnham
We are proposing to build a new high voltage electricity transmission line and associated works between a new substation north of Hull at Creyke Beck in the East Riding of Yorkshir...
North Humber to High Marnham
Eastern Green Link 1
EGL1 is a two gigawatt (GW) high voltage direct current (HVDC) electrical superhighway to be built between the Torness area in East Lothian, Scotland and Hawthorn Pit in County Dur...
Eastern Green Link 1
Tyne Crossing Strategic Replacement
National Grid is working with the North East Combined Authority (NECA), Port of Tyne and regional partners to remove the restriction posed by existing overhead electricity lines that cross the River Tyne at Wallsend and Jarrow.
Tyne Crossing Strategic Replacement
Wanlass Beck and Birkhill Wood (Creyke Beck extension and new substation)
In July 2023, we consulted on our proposals for works in the Cottingham area, north of Hull. Since then, we've worked to refine our plans in response to the feedback we've received.
Wanlass Beck and Birkhill Wood (Creyke Beck extension and new substation)
Tees Dock substation
We are developing proposals to construct a new substation at Dorman Point, within the established industrial Teesworks area on the south bank of the River Tees, east of Middlesbrough, and we wanted to make you aware of our plans.
Tees Dock substation
Tees Dock Substation
We are developing proposals to construct a new substation at Dorman Point, within the established industrial Teesworks area on the south bank of the River Tees, east of Middlesbrough.
Tees Dock Substation
Cross Border Connection
This project is designed to strengthen the electricity network between Scotland and England. It will connect new sources of energy in the Scottish Borders to the wider network.
Cross Border Connection
Kearsley to Whitegate
We are carrying out refurbishment work on our electricity transmission line that runs between our substations in Kearsley and Whitegate. This line is 15km long and has 45 pylons.
Kearsley to Whitegate
Carlisle to Newcastle
Carlisle to Newcastle is a proposal in its early stages of development to upgrade the electricity network between the North West and North East of England.
Carlisle to Newcastle
Rainhill Substation extension
National Grid is extending Rainhill Substation, which is located in St Helens, Merseyside. This work will boost capacity for local energy distributor SP Energy Networks (SPEN) and connect a new Battery Energy Storage System (BESS).
Rainhill Substation extension
Harker substation project
We are extending our substation at Harker, which will help to increase network capacity between Harker and the Scottish Border whilst boosting energy security.
Harker substation project
Harker Substation
We are extending our substation at Harker, which will help to increase network capacity between Harker and the Scottish Border whilst boosting energy security.
Harker Substation
Grain to Tilbury
The Grain to Tilbury project is a proposed electricity infrastructure upgrade, involving the replacement of the existing 1960s Thames Cable Tunnel beneath the Thames between Tilbur...
Grain to Tilbury
Essex overhead line
Over the coming months, we will be replacing the remainder of the overhead line, conductors, and fittings on the Bramford to Braintree to Rayleigh route.
Essex overhead line
Littlebrook to Kemsley Overhead Line
In recent years we’ve been refurbishing part of our overhead line network in Kent County.
Littlebrook to Kemsley Overhead Line
Fleet to Lovedean Overhead Line
The overhead lines running between Fleet and Lovedean have been operational for many years and National Grid has identified the route as needing refurbishment.
Fleet to Lovedean Overhead Line
Littlebrook substation
The current substation at Littlebrook, Dartford is no longer fit for purpose and a new facility is needed to ensure that we continue to provide a reliable supply of electricity for...
Littlebrook substation
Little Horsted – we are building a new substation (electricity supply point)
Establishing a new grid supply point near Little Horsted, connected to UK Power Networks’ Lewes substation via new underground electricity cables.
Little Horsted – we are building a new substation (electricity supply point)
Richborough Connection
The Richborough Connection will connect the high-voltage electricity link between Belgium and Richborough near Sandwich to the National Grid.
Richborough Connection
Bramley to Melksham Upgrade
National Grid Electricity Transmission (NGET) is carrying out essential upgrades to the overhead electricity line from Bramley in Hampshire to Melksham in Wiltshire.
Bramley to Melksham Upgrade
East Claydon replacement substation
We are developing early proposals for a replacement substation in East Claydon, Buckinghamshire. The proposed substation would eventually replace the existing substation in the area.
East Claydon replacement substation
New electricity infrastructure near Farmoor
We are exploring options for new electricity infrastructure near Farmoor, Oxfordshire. The purpose of the project would be to reinforce the grid whilst meeting demand for new renewable and low carbon energy sources in the region.
New electricity infrastructure near Farmoor
Hinksey Cable Replacement
National Grid Electricity Transmission (NGET) is looking to replace underground cables along what is commonly known as the ‘electric road’ footpath in South Hinksey.
Hinksey Cable Replacement
Lovedean to Bolney Overhead Line Refurbishment
We have carried out essential maintenance work on the 400kV overhead electricity transmission line between Lovedean in Hampshire and Bolney in West Sussex.
Lovedean to Bolney Overhead Line Refurbishment
Pelham to Rayleigh Overhead Line Reinforcement
This project involves upgrading around 100 km of existing high voltage overhead electricity transmission lines between Pelham and Rayleigh, enabling more power to be transported through the network.
Pelham to Rayleigh Overhead Line Reinforcement
Uxbridge Moor substation
National Grid is building a new electricity substation (‘Uxbridge Moor’) on land bordering our existing substation in Iver Heath.
Uxbridge Moor substation
Wallend Substation
National Grid is constructing a new 400kV substation within the industrial area of the Isle of Grain in Kent to support a new interconnector linking the UK and Germany.
Wallend Substation
Warley replacement substation
National Grid is proposing a new electricity substation within the London Borough of Havering to replace and upgrade our existing Warley substation.
Warley replacement substation
Willesden and Kensal Green Connection project
We will be providing this new connection between our substations at Willesden and Kensal Green. This will involve replacing 3 km of cable along the Grand Union Canal towpath, using the existing high voltage cable troughs.
Willesden and Kensal Green Connection project
Bramley Network Rail Connection
To support Network Rail in the decarbonisation of its network, we are installing a 400/25kV Supergrid transformer at Bramley substation and connecting it to a new trackside substat...
Bramley Network Rail Connection
IFA2 Connection
Constructing an electricity substation to connect the new IFA2 interconnector to the national electricity network.
IFA2 Connection
Hinkley Connection Project
In the South West, EDF Energy has been granted a Development Consent Order for a new nuclear power station at Hinkley Point.
Hinkley Connection Project
Landscape Enhancement Initiative (LEI)
The Landscape Enhancement Initiative (LEI) is an important part of the VIP project. Championed by our stakeholders, the initiative aims to use up to £11m of the Ofgem provision for...
Landscape Enhancement Initiative (LEI)
Mannington to Nursling Overhead Line
From October 2022, National Grid will be working in partnership with its contractor Balfour Beatty to refurbish a 40km/25 mile stretch of overhead power line between Nursling and M...
Mannington to Nursling Overhead Line
Cotswolds VIP
A stunning landscape crossed by the popular Cotswold Way National Trail, with expansive views across farmland, ancient woodland and distinctive escarpments.
Cotswolds VIP
Dorset VIP
The geology is strongly expressed along the Jurassic Coast, a World Heritage Site, and gives rise to a varied landscape of downland, ridges and vales.
Dorset VIP
North Wessex Downs VIP
A predominantly chalkland landscape with dramatic scarp slopes and moulded dip slopes that reflect the area’s underlying chalk geology.
North Wessex Downs VIP
Melksham Substation
We’re upgrading our existing Melksham substation so we can safely connect new sources of low carbon energy generation and energy storage to our network.
Melksham Substation
Woolavington substation
In 2024, Agratas, part of Tata Group, confirmed that it was to build the factory near Bridgwater in Somerset. Construction of the 40GWh factory is now underway, which aims to supply almost half of the batteries needed by the UK’s automotive industry by the early 2030s.
Woolavington substation
Western Link 2 / Cyswllt Gorllewinol 2
A joint proposal between National Grid and Scottish Power Transmission for a new High Voltage Direct Current (HVDC) offshore connection between Scotland and Wales.
Western Link 2 / Cyswllt Gorllewinol 2
Walham to Cilfynydd / Walham i Cilfynydd
We’ll shortly be refurbishing the overhead power lines between Walham and Cilfynydd / Cyn bo hir, byddwn yn adnewyddu'r llinellau pŵer uwchben rhwng Walham a Cilfynydd
Walham to Cilfynydd / Walham i Cilfynydd
Pembroke substation extension/ Estyniad Is-orsaf Penfro
Pembroke substation site extension to help meet the growing demand for electricity in the area.
Pembroke substation extension/ Estyniad Is-orsaf Penfro
Snowdonia VIP
A dramatic and varied landscape which includes spectacular mountain scenery, glacial valleys, extensive moorlands and two dramatic coastal estuaries.
Snowdonia VIP
Dinorwig to Pentir / O Ddinorwig i Bentir
National Grid needs to replace the existing underground cables between Dinorwig power station and our substation at Pentir.
Dinorwig to Pentir / O Ddinorwig i Bentir
Pentir to Trawsfynydd reinforcement / Atgyfnerthu’r cysylltiad rhwng Pentir a Thrawsfynydd
National Grid needs to reinforce and refurbish parts of the existing high voltage power network in North Wales.
Pentir to Trawsfynydd reinforcement / Atgyfnerthu’r cysylltiad rhwng Pentir a Thrawsfynydd
Penrhos Substation / Is-orsaf Penrhos
Construction of a new Gas Insulated Substation (GIS) and associated cable replacement
Penrhos Substation / Is-orsaf Penrhos
Is-orsaf Bodelwyddan / Bodelwyddan substation
Bodelwyddan substation is located in Cefn Meiriadog, adjacent to St Asaph Business Park, along the Pentir to Connah’s Quay overhead line route.
Is-orsaf Bodelwyddan / Bodelwyddan substation
Cilfynydd substation expansion
We are currently investigating plans to expand Cilfynydd substation to improve the resilience and reliability of the electricity network.
Cilfynydd substation expansion
Cilfynydd to Melksham overhead power line refurbishment
This overhead 400kV power line runs over a 106 km route between our Cilfynydd substation in South Wales and our Melksham substation in Wiltshire.
Cilfynydd to Melksham overhead power line refurbishment
Connah’s Quay to Bodelwyddan Refurbishment Project / Prosiect i Adnewyddu'r Cysylltiad rhwng Cei Connah a Bodelwyddan
We are carrying out essential upgrades to our existing overhead electricity line between Connah’s Quay Substation and Bodelwyddan Substation.
Connah’s Quay to Bodelwyddan Refurbishment Project / Prosiect i Adnewyddu'r Cysylltiad rhwng Cei Connah a Bodelwyddan
Gwyddelwern Substation
Gwyddelwern Substation is a proposal to build a new substation in North Wales. The project will connect new sources of renewable energy to the transmission network, manage electricity flows and help meet increasing demand for power.
Gwyddelwern Substation
Is-orsaf Llandyfaelog Substation / Llandyfaelog Substation /
National Grid is proposing a new 400 kV substation near Llandyfaelog, south of Carmarthen, to help meet the growing demand for electricity in South and South-West Wales.
Is-orsaf Llandyfaelog Substation / Llandyfaelog Substation /
Cysylltiad Margam Connection
We are proposing an extension to the existing substation at Margam, along with an underground cable route. This will support the electrification of Tata Steel’s new electric arc furnace and provide capacity for future connections.
Cysylltiad Margam Connection
Coleshill to Bedworth
We’ll carry out further upgrade and maintenance work to fully refurbish the 50-year-old line. This concludes the activity we started in 2017. This will keep the transmission networ...
Coleshill to Bedworth
Rugeley 132kV Substation Replacement
We will be carrying out a substation replacement of the 132kV substation located on the old Rugeley Power station site, as the current 132kV substation building is approaching the end of its operational lifespan.
Rugeley 132kV Substation Replacement
Lower Frankton Substation
We are proposing a new substation in the Lower Frankton area. Our existing substations do not have the capacity for additional connections and therefore a new substation is proposed on the existing, high-voltage 400kV overhead line route running between Wrexham Substation (aka Legacy) and Shrewsbury Substation.
Lower Frankton Substation
Drax to Thornton Overhead Line
Our overhead line running between Drax and Thornton, in Yorkshire, has been operational since 1971. To ensure it remains reliable and keeps homes and businesses in the region suppl...
Drax to Thornton Overhead Line
Eastern Green Link 2
EGL2 is a 2GW high voltage direct current (HVDC) electrical ‘superhighway’ cable link to be built between Peterhead in Aberdeenshire, Scotland and Drax in North Yorkshire, England.
Eastern Green Link 2
Yorkshire Green
The Yorkshire GREEN project proposes new infrastructure including substations, overhead lines, underground cables and cable sealing end compounds (where underground cables meet ove...
Yorkshire Green
West Yorkshire Overhead Line
In recent years we’ve been refurbishing part of our overhead line network in West Yorkshire.
West Yorkshire Overhead Line
Middleton Substation
National Grid Electricity Transmission is preparing to submit a planning application for an extension to Middleton Substation, near Heysham.
Middleton Substation
Drax to Fenwick
We are carrying out maintenance work on the steel towers (often known as pylons) along the overhead line between Drax Substation and Fenwick to help keep the electricity transmission network safe and reliable.
Drax to Fenwick