The arrival of the Tunnel Boring Machine (TBM) marks a significant milestone for the National Grid’s initiative in Snowdonia, aiming to reduce the visual footprint of power lines.
- The VIP project intends to replace 3km of overhead electricity lines in the Eryri National Park with underground tunnels.
- The TBM, delivered in 27 parts, is beginning assembly on-site, set for deployment early next year.
- Collaborative efforts between various stakeholders aim to ensure minimal disruption during the TBM’s transportation and setup.
- This initiative is part of National Grid’s broader efforts to enhance the visual and environmental quality in UK’s protected landscapes.
The highly-anticipated arrival of the Tunnel Boring Machine (TBM) at the Snowdonia site marks a pivotal step for the National Grid’s Visual Impact Provision (VIP) project. This venture seeks to replace 3km of overhead power lines in the celebrated Eryri National Park with underground cabling, significantly reducing visual disruption in the area. Contractor Hochtief UK oversees the project, working with community stakeholders to harmonize the blend of modern infrastructure with Snowdonia’s natural vistas.
The construction plan involves two tunnel head houses to provide access to the tunnel and a sealing end compound for linking underground cables with existing overhead lines. This technical progression reflects a commitment to enhancing the aesthetic integrity of Britain’s protected landscapes, particularly within the boundaries of Eryri National Park.
The TBM, an engineering marvel measuring 166m and weighing 436 tonnes, is being delivered in 27 individual loads to the site in Minffordd. Each delivery is meticulously organized to minimise disturbance to local traffic. The TBM’s journey commenced from Germany by sea, reaching Immingham Docks before a carefully managed road trip to its final destination. Police escorts are employed for the majority of these deliveries to ensure safety and smooth transit.
The tunnelling process will begin in early 2025, aiming to reach Llandecwyn by mid-2026. Following the completion of this subterranean endeavor, the overhead pylons and power lines will be removed progressively by 2029, reinstating the area’s natural beauty and appeal.
Beyond Eryri, the initiative is part of a wider National Grid commitment to counter the visual impact of electrical infrastructure across various UK landscapes, with similar projects in progress in the Cotswolds and North Wessex Downs. The conclusion of each project aims to maintain the scenic allure that attracts both tourism and local pride.
Steve Ellison, National Grid Eryri VIP senior project manager, stated, “These deliveries have been many months in the planning, and we work hard to minimise any disruption. We appreciate the cooperation and understanding of the local community.” These efforts underscore the balanced approach of development progress and environmental stewardship.
The Snowdonia project exemplifies a careful balance between infrastructure development and environmental conservation, setting a precedent for similar future endeavours.
