About this project
Pembroke substation is located in an industrial area west of Pembroke town, near the coast and just outside Pembrokeshire National Park. The site is surrounded by a power station, oil refinery, and multiple renewable energy projects.
Our plans
As the transmission network owner for England and Wales, National Grid Electricity Transmission (NGET) has identified the need to extend our Pembroke substation site to help meet the growing demand for electricity in the area. As a regulated business, we have a legal obligation to connect customers to our network when a connection is requested.
Pembrokeshire County Council has confirmed that our plans are classed as permitted development under the Town and Country Planning (General Permitted Development) (Amendment) (Wales) Order 2019.
This means we do not need planning permission for the works.
What’s happened so far
Before starting the main construction work, we have carried out a range of surveys and assessments to inform our project design.
What happens next
- Construction is scheduled to start in early 2026.
- As the extension is going to take place within the existing Pembroke sub-station site, we expect the work to have minimal impact on the local community.
- Our experienced contractor, M Group, will be carrying out the work on our behalf.
- Our working hours will be 8am to 6pm Monday to Friday.
- No road closures or installation of traffic management is planned.
- The work will have no impact on local electricity supplies.
- We will update this webpage as our work progresses to keep everyone informed.
The Great Grid Upgrade in Wales
The Great Grid Upgrade is the largest overhaul of the electricity grid in generations. Our infrastructure projects across Wales and England are helping to connect more secure, cleaner, home-grown energy from more affordable sources to your homes and businesses.
The UK’s electricity grid was originally built to connect electricity generated in power stations from fossil fuels, such as coal from the North and Midlands of England and South Wales.
As the UK moves away from fossil fuels and increases clean energy generation, we’ll all be using more electricity than ever before. Demand for electricity is expected to increase by 50% by 2035 and double by 2050, as we decarbonise the energy that’s used for things like heating and transport.
Transitioning to secure, affordable and cleaner energy sources, means we need to build new infrastructure, as well as upgrading the existing grid, to bring this power from where it’s generated to where it’s needed in homes and businesses.
Contact us
If you have any questions about our proposals for the Pembroke substation extension, please get in touch.
- Call our Community Helpline: 0800 279 3408 (Lines are open Monday to Friday, 9am-5:30pm).
- Email us: [email protected]
- Write to us: Freepost, National Grid CR, PO Box 6768, Warwick, CV34 9SH (no stamp required).