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Our latest proposals


Overhead line between Wylfa and Pentir

Our latest proposals include a detailed design for the second connection, including where individual pylons are located. 

Tunnelling at the Menai Strait

We’re proposing a tunnel under the Menai Strait. The tunnel will be around 4km long and at each end we’ve identified the locations where we will build the equipment we need to change from overhead to underground.

Interactive map



Explore our interactive project map of the proposals in Anglesey and Gwynedd. You can zoom into specific sections of the route and search the map by postcode.

Transport & Construction

Most of the equipment we will need will be transported on lorries (HGVs) but we'll also need some some larger vehicles such as mobile cranes and low loaders. 

Updates to construction traffic routes 

Last year, we consulted on changes to some of the roads we plan to use while constructing the second connection. 

Our work in West Gwynedd

Our work in West Gwynedd involves making some important upgrades to the electricity network near Porthmadog and Bryncir.

What happens next?

Horizon Nuclear Power has submitted its application for Wylfa Newydd to the Planning Inspectorate and we expect to submit ours within the next few months. 

We’re continuing to have conversations with people and undertake assessments and surveys.This will make sure our application takes into account the latest possible information.


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