A Norfolk energy plant is set to double in size, as part of a major expansion to allow new offshore windfarms to feed into the national grid.

Plans have been lodged with South Norfolk Council for a 12-acre extension of the Norwich Main Substation, near Dunston, close to the A47 and A140.

It would roughly double the size of the infrastructure on the site.

National Grid hopes to expand the substation to support new offshore windfarms, including Hornsea Three and Equinor's Sheringham Shoal and Dudgeon.

The proposals form part of National Grid's extensive plans to improve energy infrastructure across the region, along with the controversial Norwich to Tilbury pylon scheme. 

The extension would feature similar equipment to the existing substation and would not see any new overhead lines built. 

Eastern Daily Press: The Norwich Main Substation on the A140The Norwich Main Substation on the A140 (Image: Marc Betts)

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National Grid's pylon plans have been strongly opposed with communities in south Norfolk - and elsewhere along the line - resisting the proposals.

They argue the 114 mile line from Norwich to Tilbury will harm the countryside, and are calling for more of the route to run underground or for it to be moved off the coast, to run along the seabed.

South Norfolk Council will decide whether to approve the substation extension plans in due course.