National Grid Closes Llyn Padarn Lakeside Trail for Infrastructure Works Until 2027
The National Grid has closed access to the northern edge of Llyn Padarn for a major infrastructure project until early 2027. The work involves replacing underground cables between Dinorwig hydroelectric power station and Pentir substation, impacting access to nearby trails and shortening journeys on the Llanberis Lake Railway. Diversion routes are provided but may be challenging due to terrain conditions.

Access to the northern edge of Llyn Padarn is closed until early 2027 due to National Grid's infrastructure project. The project involves replacing underground cables between Dinorwig hydroelectric power station and Pentir substation.
The closure affects the Llyn Padarn circular walk and shortens services on the Llanberis Lake Railway. Diversion routes are available, though they may be muddy. Fencing will be installed for safety. The work is part of The Great Grid Upgrade, aimed at reinforcing the high voltage power network in North Wales.




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