Maps recommendations list

This project is currently required to enable the development of a robust and reliable offshore network connection and will be reappraised in the detailed design stage.

One new 225 MVAr switched capacitors (MSCs) at Rye House would provide voltage support through East Anglia and North London as system flows increase in future.

One new 225 MVAr switched capacitors (MSCs) at Rye House would provide voltage support through East Anglia and North London as system flows increase in future.

Replace the conductors on the remaining sections of the Rayleigh to Tilbury circuit, which have not recently been reconductored with higher-rated conductors. These would increase the circuit’s thermal rating.

Construct a new offshore 2 GW HVDC circuit between Suffolk and Kent.

Provide a new communications system, and other equipment, to allow existing reactive equipment to be switched in or out of service very quickly following transmission system faults. This would allow better control of system voltages following faults.

Replace the conductors from Elstree to Sundon circuit 1 with higher-rated conductors to increase their thermal rating.

Turn-in the Elstree to Sundon circuit 2, which currently passes the Elstree 400 kV substation, to connect to it and replace the conductor with a higher-rated conductor. This would ensure better load flow sharing and increase their thermal rating.

Replace the conductors on the existing circuit between Grendon and Sundon with higher capacity conductors

Substation upgrade of the 400 kV South Humber substation equipment.