We propose a series of works to build and operate three new substations - one in Rotherham, another near Chesterfield and a third in High Marnham - to allow us to safely carry more energy between the North of England and the Midlands. 

The proposed substations would also enable us to upgrade the existing Brinsworth to Chesterfield and Chesterfield to High Marnham overhead electricity lines and connect future electricity transmission network projects as part of The Great Grid Upgrade.
 

Rotherham - Long Lane

We propose to build and operate a new 400 kV substation to the east of Long Lane in Rotherham, South Yorkshire.

We need to build a new substation as there isn’t sufficient space to accommodate the additional equipment at the existing Brinsworth substation, off West Bawtry Road. 

The new substation would be within a compound approximately 350 metres x 180 metres, the size of around 10 football pitches, and will include four permanent substation buildings including a Gas Insulated Switchgear Hall.

The highest structures within the substation compound would be six overhead line gantries, at approximately 12 metres, which are bridge-like structures with platforms used to support equipment and cabling. 

We also propose temporary diversions of the existing Brinsworth to Thorpe Marsh and Brinsworth to Chesterfield overhead lines, with the use of some temporary pylons during construction.

To turn the overhead line into the new substation, we’d need to build nine new pylons and remove eight old pylons.