Possible location of new transmission lines

Derbyshire:
Chesterfield to Willington

English East Coast:
Bicker Fen (near The Wash) to Peterborough
Drax power station (near Selby) eastward to Creyke Beck (near Hull)
Bradwell to Rayleigh (following route of existing line): 28 km
Bramford(near Ipswich) to Twinstead (south of Sudbury): 27 km
Grimsby to Walpole (near The Wash)
Killingholme (opposite Hull on south bank of Humber) to West Burton power
station (near Retford)
 
Kent:
Lydd to south London: 95 km (a new line would be needed if more than one
new reactor is built at Dungeness nuclear power station)

London area:
Tilbury to Elstree
Waltham Cross to Hackney (both are ‘uprating’ of existing 275kV lines to 400 kV, potentially meaning larger pylons)

South Yorkshire:
Brinsworth (near Rotherham) to Chesterfield (‘uprating’ of existing 275 kV line to 400 kV, potentially meaning larger pylons)

South West:
Hinkley Point to Avonmouth: 65 km

Wales:
Shrewsbury to south east of Machynlleth
Trawsfynydd to south east of Machynlleth (joining line from Shrewsbury)
Wylfa to Pentir (near Bangor): 35 km

Offshore: (Scotland Hunterston to Deeside (undersea Direct Current [DC] cable)
to England and Wales) Peterhead to Hartlepool (undersea Direct Current [DC] cable)

In addition, we also understand that energy companies are considering proposals for new nuclear power stations in the North West. If these were developed then they would probably also need a further overhead high voltage transmission line to serve them. Substations at the following locations may need expansion for additional transmission of electricity generated by new nuclear stations and/or offshore wind farms.

Anglesey: Wylfa
Devon: Alverdiscott (near Barnstaple)
Dorset: Chickerell (near Weymouth)
East Riding: Creyke Beck
Essex: Rayleigh
Flintshire: Deeside
Gwynedd: Pentir
North Lincolnshire: Grimsby, Keadby (near Scunthorpe), Killingholme
London: Barking
Norfolk: Norwich, Walpole
North Yorkshire: Drax, Thornton (near York)
Suffolk: Bramford, Sizewell
Sussex: Bolney

All of these new developments will be considered over the coming years through the planning system, specifically the new procedures set out in the Planning Act 2008