What are we proposing in the Monk Fryston substation area? (Section F)

To increase and strengthen network capacity to accommodate the increasing energy flows we would need to build a new 400/275kV substation. This new substation would be located adjacent to (and connecting into) the existing Monk Fryston substation, which otherwise would be unable to accommodate the additional energy flowing from the uprated overhead lines.

The substation would:

• have a footprint of approximately 80,000m2 (8 hectares);

• have a maximum height of 15m at its highest point (including the gantries), although the heights of the substation and equipment are yet to be finalised;

• contain four Super Grid Transformers (SGT) to help convert the voltage of the overhead lines (275kV)

• to connect into the substation (400kV); and

• include approximately 600m of underground cables to connect the overhead line circuits to the new substation.

*Please note that the above proposals are shown as they were presented during our statutory consultation in 2021.

Please note this shows our proposals as presented during our statutory consultation. 

To help manage the power flows into the new substation at Monk Fryston, we are proposing the following changes to existing infrastructure in this area:

• reconfiguring the existing 275kV Poppleton to Monk Fryston (XC) overhead line to connect into the new substation, including the installation of new spans of overhead line where needed;

• removing and installing new pylons, resulting in one additional pylon in this area, along with two new gantries to allow the overhead line to connect to the new substation; and

• reconfiguring a short section of the existing 400kV Eggborough to Monk Fryston overhead line to connect into the new substation, along with dismantling approximately 350m of existing overhead line.

*Please note that the above proposals are shown as they were presented during our statutory consultation in 2021.