Our proposals

To connect new energy parks in Powys, we are proposing a new 132 kV connection.

Our proposals include:

• A new 132 kV collector substation near Cefn Coch, Powys (Grug y Mynydd substation)
• Approximately 4.8km of underground cable from Grug y Mynydd substation through the proposed Llyn Lort Energy Park to a cable sealing end compound
• Cors y Carreg cable sealing end compound, enabling the transition between underground cables and overhead conductors
• Approximately 45km of new overhead line supported on steel lattice pylons from the sealing end compound to a proposed new National Grid substation near Lower Frankton in Shropshire
• Switching station in Lower Frankton
• If permanent rights are granted, the areas of land we may need temporarily, such as for construction or operation of the connection land will be required for mitigation, compensation, and environmental enhancement

The design will include pylons with an average height of 28.5m. These are the smallest pylons available to us to carry the amount of power being generated. They are shorter and less bulky than the previous connection proposed by National Grid in 2014.

To facilitate our connection request, National Grid Electricity Transmission will be developing its own proposals for a 400 kV substation in the Lower Frankton area, which will connect to our proposed 132 kV switching station. For more information about National Grid’s project, visit: nationalgrid.com/lower-frankton