In the UK, National Grid is marking a major milestone on its Eryri Visual Impact Provision (VIP) scheme with the arrival of the TBM, which will be used to excavate the tunnel that will contain the new electricity cables that will replace the existing 3km of overhead line that cross the Dwyryd Estuary from Minffordd to Llandecwyn in Wales.
The Visual Impact Provision project in Eryri National Park aims to reduce the visual impact of the overhead electricity line across the Dwyryd Estuary. National Grid has worked closely with stakeholders and the local community to implement the project, which includes constructing two new tunnel head houses, which will provide access to the tunnel, along with a sealing end compound to connect the underground cables with the remaining overhead line.
Once assembled, the TBM, which will measure 166m long and weigh 436t, will start tunnelling early this year. It is expected to complete tunnelling and reach its destination in Llandecwyn in mid-2026, with the pylons and overhead line due for removal in 2029.
