Snowdonia Visual Impact Provision
Snowdonia National Park was designated in 1951 and is the largest National Park in Wales. Snowdonia comprises of a varied landscape which includes mountain scenery, glacial valleys, extensive moorlands, and two coastal estuaries.
The National Park is crossed by four of National Grid’s overhead lines. The independent landscape assessment concluded that one section of transmission line has landscape and visual impacts of very high importance. This subsection runs from the west coast at the Dwyryd Estuary near Porthmadog past Cilfor before climbing up towards the summit of Moel Tecwyn and beyond, finishing at the western side of Ceunant Llennyrch Valley.