National Grid Connection Proposals

The onsite substation at Fosse Green Energy will connect with the proposed Navenby Substation via a buried export cable corridor which is approximately 10km in length. This is shown as a grid connection corridor.

A grid connection corridor is a broad ribbon of land through which a buried electrical connection would be routed. The corridor can vary in width.

The connection involves running 400 kilovolt (kV) and associated cables from the site to the substation at Navenby which is installed via open trenching and then backfilling trenches to reinstate the land and return it to its current use. The substation then connects the energy produced by Fosse Green Energy into the grid for use in homes and businesses.

The proposed Navenby Substation is subject to a separate planning application put forward by National Grid and is not part of the Development Consent Order (DCO) application for Fosse Green Energy.

More information about the proposed Navenby Substation can be found on the National Grid website here.

What is a grid connection corridor?

A grid connection corridor is a broad ribbon of land through which a buried electrical connection would be routed. The corridor can vary in width.

Installing and connecting the cables

We will be installing the grid connection corridor cables using an open trench technique for the majority of its route:

1. A trench approximately three metres wide and three metres deep will be excavated to lay the cables.
2. During construction the working width of land needed would be between 30 to 40 metres to allow for the movement of vehicles alongside the trench, laydown, and soil stockpiles.
3. Jointing pits are needed where one section of cable joins the next.
4. When land is reinstated, the land can be returned to agricultural land use but has certain restrictions preventing other development within the easement. In certain locations, trenchless construction techniques (such as horizontal directional drilling) may be used, such as when crossing under the A46 or the Rivers Witham and Brant. This is to help avoid disruption and to reduce environmental impacts.