Electricity has become part of almost everything we rely on, from heating our homes and running local businesses to keeping phones charged, supporting healthcare, and enabling people to work from home.
Much of Barmouth's electricity network was built in the 1960s. While it has served the community well for decades, the way we use electricity is changing rapidly and demand continues to grow.
To help ensure the network can support Barmouth in the years ahead, SP Energy Networks is investing £1.5 million in upgrades to increase capacity and improve resilience. Without this investment, the existing network is forecast to reach its limits by 2028.
The project will involve installing new underground cables beneath sections of the town. While this work will inevitably cause temporary disruption, it is being carried out to help ensure Barmouth continues to have a reliable electricity supply capable of supporting homes, businesses and public services for decades to come.
Why invest now?
Major infrastructure projects often become necessary long before problems are visible.
The challenge facing Barmouth is not today's electricity demand, but tomorrow's. More households are switching to electric heating, more vehicles are being powered by electricity, and more everyday activities depend on a reliable electricity supply than ever before.
Investing now helps avoid future constraints and ensures the network can continue to support the community's ambitions, rather than becoming a barrier to them.
Project Route Map
The map below shows the planned cable route and the different phases of work across Barmouth.
Planned Work and Road Closures
Work is expected to begin in October 2026 and will involve installing cable ducts and new electricity cables along sections of the local road network.
Dates may be subject to change as the programme progresses. This table will be updated regularly to reflect the latest information.
| Road | Traffic measures and impact | Start date | End date | Phase |
| Beach Road | Road closure with local diversion and possible traffic lights | 16 Oct 2026 | 18 Oct 2026 | Duct Install |
| Marine Parade | Road closure with local diversion and possible traffic lights | 19 Oct 2026 | 20 Nov 2026 | Duct Install |
| King Edwards Street | Road closure with significant diversion via A470 | 16 Nov 2026 | 2 Dec 2026 | Duct Install |
| Park Road | Limited access | 19 Oct 2026 | 20 Nov 2026 | Duct Install |
| Ffordd Mynach | Road closure with local diversion and possible traffic lights | 30 Nov 2026 | 18 Dec 2026 | Duct Install |
King Edward Street Closure
To safely install the new infrastructure, King Edward Street will need to close temporarily between 16 November and 2 December.
We recognise this will be one of the most disruptive phases of the project for residents, businesses and visitors.
The closure has been carefully planned with Cyngor Gwynedd and timed to avoid the town's busiest visitor period. While a closure cannot be avoided for this stage of the work, every effort is being made to complete it as safely and efficiently as possible.
A signed diversion route via the A470 will be in place throughout the closure. This diversion route can be found in the document library below, alongside details of all other traffic management arrangements.
Work on other roads in Barmouth will take place before and after the closure, mainly using temporary traffic lights and other local traffic management arrangements.
Shaped by Community Feedback
The people who know Barmouth best are the people who live and work here.
Thank you to everyone who attended our September and October community information events. The questions, concerns and local knowledge shared have directly influenced how the project is being delivered.
Not every concern can be removed, and some disruption will remain unavoidable. However, understanding what matters most to local people helps us make better decisions about how the work is planned, communicated and delivered.
We will continue listening throughout the project and regularly review opportunities to reduce impacts wherever it is practical and safe to do so.
An FAQ document addressing questions raised during the information events will be published here shortly. Members of the project team will remain active in the area throughout the works, providing updates, listening to feedback and ensuring local views continue to help shape our approach as the project progresses.
What Will the Work Involve?
The project will be completed in three main stages:
Stage 1: Duct Installation
The main construction phase, involving excavation works to install underground ducts (protective pipes) for the new cables to run through. This stage typically involves the highest levels of construction activity, traffic management and noise.
Stage 2: Cable Installation
Once the ducts are in place, the new cables are pulled through and connected at specialist access points known as joint bays. Works are usually more localised during this stage, with less intrusive traffic and pedestrian management.
Stage 3: Reinstatement
Roads and footpaths affected by the work will be repaired and returned to their previous condition in accordance with highway requirements.
Our teams may need to return to some locations as the project moves through these stages. This is a normal part of installing, connecting and testing new electricity infrastructure.
Managing Disruption While Delivering Essential Upgrades
No roadworks are convenient. The challenge is balancing the short-term disruption of construction with the long-term benefits of a stronger and more reliable electricity network.
Working closely with Cyngor Gwynedd and local stakeholders, we are continually reviewing the programme to minimise impacts wherever possible while maintaining safety and ensuring the work can be completed efficiently. For example, original project plans had seen the road closure on King Edwards Street in place for 6 weeks, but after working with stakeholders, and our contractor, we’re working to complete this section in three weeks.
Throughout the project:
- Traffic management and diversion routes will be clearly signposted.
- Advance notice will be provided before significant changes are introduced.
- Access for residents and businesses will be maintained wherever possible.
- Pedestrian routes will remain available wherever it is safe to do so.
- Emergency services, waste collection teams and key local organisations will be kept informed.
- No interruption to local electricity supplies is expected as a result of the work.
Traffic management arrangements will be reviewed regularly and any issues raised by residents, businesses or community organisations will be considered as the project progresses.
Document Library
Stay Informed
Infrastructure projects work best when information flows both ways.
This page will be updated regularly as the programme progresses, including confirmed dates, traffic management arrangements and project updates.
Once available, we will upload a Welsh language version of this text and presentation.
If you have questions, concerns, or specific access requirements, please contact the project team. Local knowledge helps us understand impacts on the community and identify opportunities to improve how the work is delivered.
Telephone: 0800 024 1439
Email: barmouthreinforcement@spenenquiries.co.uk
Together, we can help ensure Barmouth has an electricity network that continues to support the community, local businesses and essential services for many years to come.