electricity ten year statement 2016 1 appendix 2016 appendix a.pdf · fort augustus kilmarnock...
TRANSCRIPT
AppendixA
Ap
pe
nd
ix A
Contents
System schematics and geographic
Geographical2
A2 – GB Existing Transmission System 3
Appendix A
Appendix
A
Appendix A includes a set of system schematics andgeographic drawings of the current NETS, with theapproximate locations of existing power stations andreactive compensation plants shown. The schematicsalso show the NETS boundaries and ETYS zones we
Electricity Ten Year Statement 2016 1Electricity Ten Year Statement 2016
have used in our analysis.
...................................
Schematic
A1 – GB Existing Power Stations..............................................
A4 – GB Existing Transmission System 5A5 – GB Transmission System ETYS ZonesA6 – GB Transmission System BoundariesA7 – GB Reactive Compensation Plant
6..........................7.............................8...................................
...................................
A3 – GB Transmission System Boundaries 4.............................
drawings
To France
To Netherlands
To IrelandEast - West
To Northern Ireland
East Anglia
Hornsea
Dogger Bank
Firth of Forth
Moray Firth
Islay
Argyll Array
Figure A1: GB Existing Power Stations
NUCLEAR
COAL
OIL & OCGT
CCGT/CHP
HYDRO/PUMPED STORAGE
WIND
OTHER
SUBSTATIONS
PLANT TYPE
Wylfa
Deucheran
Beinn an Tuirc
Tangy Farm
Farr
Paul's Hill
Cairn Uish
Drumderg
Boyndie
Glens of FoundlandHills of Towie
Hadyard Hill
Ben Aketil
Edinbane
Causeymire
Buolfruich
Kilbraur
Gordonbush
Lairg-Achany
Beinn Tharsiun
Novar
Fairburn
Millennium
Tullo
Braes of Doune
Earlsburn
Aikengall
Crystal Rig1 & 2
Dun Law
Bowbeat Long Park
Toddleburn
Whitelee
Dalswinton
Minsca
Cruach Mho
Ardkinglas
Lynn
Inner Dowsing
Scroby sands
Sheringham Shoal
Rhyl Flats
Burbo Bank
Gwynt y Mor
Barrow
Ormonde
Walney I & II
Robin Rigg
Thanet
Gunfleet Sands I&II
Greater Gabbard 500MW
North Hoyle
London Array
Arecleoch
Mark Hill
Clyde South
Black Law
Clyde North
Moyle
Baillie & Bernaheig
Rosehall
Dummuies
Griffin
Westermost Rough
Humber Gateway
Lincs
West of Duddon
Berry Burn
Harestanes
Lochluichart
Teesside
A Cruach
Cour
Carraig Gheal
Corriemoillie
Corriegarth
Edintore
Dunmaglass
Moy
Kilgalioch
Black LawExtension
Assel Valley
Harburn Head
Extension
Keithshill
Airies
CalderwaterAndershaw
Quixwood Penmanshiel
Pogbie
Triton Knoll
Race Bank Dudgeon
Greater Gabbard 2nd part
Tongland
QuoichInvergarry
Sloy
ClachanCruachan
Lochay
Rannoch
CashlieTummel Bridge
Errochty Power Station
St. Fillans
Kinlochleven
Nant
FinlarigInverawe
An Suidhe
Orrin
Aigas
Fasnakyle
MossfordGrudie Bridge
Conon
Luichart
DeanieCulligran
Kilmorack
GlenMorrison
CaennacrocFoyers
Glendoe
Livishie
Torr Achil
Shin
Cassley
Lairg
Dinorwig
Ffestiniog
Clunie
Pitlochry
Aberthaw
Uskmouth
Severn Power
Seabank
Barry
Baglan BayDidcot
Marchwood
FawleyCowes
Shoreham
Dungeness
Medway
Grain
Barking
Damhead Creek
CorytonTaylors Lane
Rye House
Brimsdown
Rugeley Ratcliffe-on-Soar
Derwent
Staythorpe
CottamCDCL
Little Barford
Corby
Peterborough
Kings Lynn
Sutton Bridge
Deeside
Connahs Quay
Shotton PaperFiddlers Ferry
Rocksavage
Keadby
Brigg
West Burton
Eggborough
DraxFerrybridge
South Humber BankImmingham
Killingholme
Saltend
Hartlepool
Wilton
Lynemouth
HeyshamRoosecote
Sellafield
Steven’s Croft
Torness
Exxon Mossmorran
Grangemouth
Longannet
Hunterston
Caledonian Paper Mill
Hinkley Point B
Spalding
Peterhead
Stoneywood
Indian Queens
Langage
Great Yarmouth
Sizewell B
Kingsnorth
PembrokeBritNed
IFA
Whitelee Ext.
Fallago
Markinch
Ewe Hill
Tormywheel
Glenchamber
Sneddon Law
Wst Browncastle
Burn of Whilk
Camster
Denny
Rampion
Glen App
Dersalloch
Galawhistle
2
To France
To Netherlands
To Ireland
To Northern Ireland
East Anglia
Hornsea
Dogger Bank
Firth of Forth
Moray Firth
Rampion
Argyll Array
Islay
Connah’s Quay
Middleton
Linnmill
Moffat
Fallago
GalashielsGalashiels
Hawick
Harestanes
Kinlochleven
Tummel Bridge
400kV Substations275 kV Substations132kV Substations
400kV Circuits275kV Circuits220kV Circuits132kV Circuits
Interconnectors
Major Generating Sites Including Pumped Storage
Connected at 400kVConnected at 275 kVHydro Generation
Figure A2: GB Existing Transmission System
Errochty
Tummel
Denny
Crossaig
Corriemoillie
Cashlie
Sutton Bridge
New Cumnock
Black Law Extension
Hadyard
Kilgallioch
CumbernaldBainsford
Auchenwynd
Robin Rigg
Barrow
Ormonde
Rhyl Flats
Burbo Bank
Kentish Flats
Gunfleet Sands I&II
London Array
Gwynt y Mor
Thanet
Walney I & II
Greater Gabbard 500MW
West of Duddon
Westermost Rough
Humber Gateway
Sheringham Shoal
Greater Gabbard 2nd part
North Hoyle
Lynn
Inner Dowsing
Triton Knoll
Lincs
Race Bank Dudgeon
Teesside
Scroby sands
3
Penn
PyleIver
Drax
Fleet
Abham
GrainHurst
Wylfa
Blyth
Sundon
Legacy
Stanah
Pentir
Kirkby
Hutton
Walham
Pelham
Harker
Elland
Keadby
MargamWarley
Norton
Cowley
Bolney
Rassau
Minety
Exeter
Fawley
Didcot
Cottam
Seabank
Taunton
Kitwell
Kemsley
Whitson
Laleham
Walpole
Grendon
Padiham
Rugeley
Deeside
Rowdown
Norwich Main
Heysham
Enderby
NinfieldLovedean
Bramford
Bredbury
Nursling
Drakelow
Pitsmoor
Neepsend
Aldwarke
Sizewell
Melksham
Thornton
Offerton
Aberthaw
Rochdale
Hartmoor
Pembroke
Landulph
Rye House
Sellindge
Tynemouth
Wymondley
Feckenham
Poppleton
Cilfynydd
Axminster
Bridgwater
Bicker Fen
Staythorpe
Mannington
Ffestiniog
Spennymoor
Penwortham
Osbaldwick
Shrewsbury
Willington
Chickerell
Cellarhead
EatonSocon
Creyke Beck
Trawsfynydd
Grimsby West
Chesterfield
Burwell Main
Alverdiscott
Langage
Indian Queens
Hinkley Point
Dinorwig
Rainhill
Capenhurst Frodsham
Washway Farm
South Manchester
Carrington
DainesFiddlers Ferry
Macclesfield
Kearsley Whitegate
Stalybridge
Dungeness
Canterbury North
Braintree
Waltham Cross
Swansea North
Baglan Bay
Cardiff East
Tremorfa
Alpha Steel
Upper Boat Uskmouth
Imperial Park
Iron Acton
Marchwood
Botley Wood
Bramley
Culham
Quernmore
Coventry
Nechells
Willenhall Bustleholm
Hams Hall
BerkswellOldbury
Bishops Wood
Ironbridge
Ocker Hill
Spalding North
Patford Bridge
FerrybridgeEggborough
Thorpe Marsh
Thurcroft
Brinsworth
HighMarnham
Templeborough
West Melton
Norton LeesJordanthorpe
Sheffield City
Winco BankStocksbridge West
Burton
SaltendNorth
Saltend South
South Humber Bank
Bradford West Kirkstall Skelton
Grange MonkFryston
Killingholme
Humber Refinery
East Claydon
Rayleigh Main
Coryton
SinglewellKingsnorth
Littlebrook
WimbledonBeddington
Chessington
West Weybridge
St Johns Wood
EalingWillesden
Watford Elstree
Tottenham Redbridge
Barking
Leighton Buzzard
Amersham Main
TilburyCity Rd
NewCross
Hackney
Brimsdown
South Shields
West Boldon
Hawthorne Pit
HartlepoolTod Point
GrangetownGreystones
Lackenby
Stella West
Fourstones
Sloy
Shin
Orrin
Aigas
Quoich
Lochay
Foyers
Rannoch
Glenlee
Clachan
Cassley
Tongland
Errochty
Fasnakyle
Invergarry
Brora
Elgin
Keith
Eccles
Beauly
Thurso
Tealing
Torness
Kintore
Mybster
Dunbeath
Arbroath
Port Ann
Dalmally
Dounreay
LongannetCockenzie
Inveraray
Carradale
Peterhead
Hunterston
St. Fergus
Auchencrosh
Blackhillock
Fort Augustus
Kilmarnock South
Alness
Nairn
MossfordGrudie Bridge
Macduff
Dingwall
Inverness
Lairg
Luichart
DeanieCulligran
Kilmorack
Boat ofGarten
Broadford
Dunvegan
Stornoway
Harris
TaynuiltCruachan
Whistlefield
Nant
Fort William
KillinFinlarig
Errochty Power Station
Clunie
Fraserburgh
Dyce
Persley
Willowdale
Clayhills
Redmoss
Fiddes
TarlandCraigiebuckler
WoodhillGlenMorrison
Caennacroc
Dudhope
Milton of Craigie
Glenagnes
Lyndhurst
Charleston
Burghmuir
Glenrothes
Westfield
Dunoon
AyrCoylton
Maybole
Coalburn
Elvanfoot
Carsfad
Earlstoun
Chapelcross
GretnaDumfries Ecclefechan
Berwick
SCOTTISH HYDRO-ELECTRICTRANSMISSION
St. Fillans
Dunbar
Inverkeithing
Dudhope
NewtonStewart
Glenluce
SP TRANSMISSION LTD
Saltcoats
Meadowhead
Kilwinning
Kaimes
PortobellloShrubhill
MossmorranGlenniston
Redhouse
Leven
Cupar
Currie
GorgieTelford Rd.
Livingston
Bathgate
Grangemouth
DunfemlineKincardine
Devonside
Stirling
Bonnybridge
Easterhouse
Newarthill
Wishaw
Black LawStrathavenClydes Mill
EastKilbride South
Busby
WhiteleeKilmarnock Town
Neilston
Erskine
Devol Moor
Helensburgh
StrathlevenSpango Valley
Lambhill
Broxburn
West Ham
NorthfleetEast
West Thurrock
Windyhill
Stoke Bardolph
Bushbury
Bodelwyddan
Knaresborough
Saltholme
Hedon
Clyde (South)
Clyde (North)
Kendoon
Marshall Meadows
Whitelee Extn
SmeatonCoatbridge
Inverarnan
Whitehouse
Knocknagael
Crystal Rig
Dunlaw Extension
To Ireland
Ratcliffeon Soar
Cleve Hill
Mill Hill
Markhill
Arecleoch
Glendoe
Rocksavage
Ardmore
Strichen
North
Hunterston
HunterstonEast
Necton
To France
To Netherlands
To Ireland
To Northern Ireland
East Anglia
Hornsea
Dogger Bank
Firth of Forth
Moray Firth
Rampion
Argyll Array
Islay
Connah’s Quay
Middleton
Linnmill
Moffat
Fallago
GalashielsGalashiels
Hawick
Harestanes
Kinlochleven
Tummel Bridge
400kV Substations275 kV Substations132kV Substations
400kV Circuits275kV Circuits220kV Circuits132kV Circuits
Interconnectors
System Boundaries
Major Generating Sites Including Pumped Storage
Connected at 400kVConnected at 275 kVHydro Generation
Figure A3: GB Transmission System Boundaries
Errochty
Tummel
Denny
Crossaig
Corriemoillie
Cashlie
Sutton Bridge
New Cumnock
Black Law Extension
Hadyard
Kilgallioch
CumbernaldBainsford
Auchenwynd
Robin Rigg
Barrow
Ormonde
Rhyl Flats
Burbo Bank
Kentish Flats
Gunfleet Sands I&II
London Array
Gwynt y Mor
Thanet
Walney I & II
Greater Gabbard 500MW
West of Duddon
Westermost Rough
Humber Gateway
Sheringham Shoal
Greater Gabbard 2nd part
North Hoyle
Lynn
Inner Dowsing
Triton Knoll
Lincs
Race Bank Dudgeon
Teesside
Scroby sands
4
B4
B5
B4
B5
EC1
B6
B6
B7
B7
B11
B11B16
B16
B7a
B7a
NW1
NW2
NW3
NW4
B8
B8
B9
B17
B9
B12
B12
SC1
B10
B15
B13
B13
B10EC5
EC5
SC1
B15
EC3
B2
B2
B1
B1
B0
B0
SW1
SW1
B1a
B1a
B2a
B2a
Penn
PyleIver
Drax
Fleet
Abham
GrainHurst
Wylfa
Blyth
Sundon
Legacy
Stanah
Pentir
Kirkby
Hutton
Walham
Pelham
Harker
Elland
Keadby
MargamWarley
Norton
Cowley
Bolney
Rassau
Minety
Exeter
Fawley
Didcot
Cottam
Seabank
Taunton
Kitwell
Kemsley
Whitson
Laleham
Walpole
Grendon
Padiham
Rugeley
Deeside
Rowdown
Norwich Main
Heysham
Enderby
NinfieldLovedean
Bramford
Bredbury
Nursling
Drakelow
Pitsmoor
Neepsend
Aldwarke
Sizewell
Melksham
Thornton
Offerton
Aberthaw
Rochdale
Hartmoor
Pembroke
Landulph
Rye House
Sellindge
Tynemouth
Wymondley
Feckenham
Poppleton
Cilfynydd
Axminster
Bridgwater
Bicker Fen
Staythorpe
Mannington
Ffestiniog
Spennymoor
Penwortham
Osbaldwick
Shrewsbury
Willington
Chickerell
Cellarhead
EatonSocon
Creyke Beck
Trawsfynydd
Grimsby West
Chesterfield
Burwell Main
Alverdiscott
Langage
Indian Queens
Hinkley Point
Dinorwig
Rainhill
Capenhurst Frodsham
Washway Farm
South Manchester
Carrington
DainesFiddlers Ferry
Macclesfield
Kearsley Whitegate
Stalybridge
Dungeness
Canterbury North
Braintree
Waltham Cross
Swansea North
Baglan Bay
Cardiff East
Tremorfa
Alpha Steel
Upper Boat Uskmouth
Imperial Park
Iron Acton
Marchwood
Botley Wood
Bramley
Culham
Quernmore
Coventry
Nechells
Willenhall Bustleholm
Hams Hall
BerkswellOldbury
Bishops Wood
Ironbridge
Ocker Hill
Spalding North
Patford Bridge
FerrybridgeEggborough
Thorpe Marsh
Thurcroft
Brinsworth
HighMarnham
Templeborough
West Melton
Norton LeesJordanthorpe
Sheffield City
Winco BankStocksbridge West
Burton
SaltendNorth
Saltend South
South Humber Bank
Bradford West Kirkstall Skelton
Grange MonkFryston
Killingholme
Humber Refinery
East Claydon
Rayleigh Main
Coryton
SinglewellKingsnorth
Littlebrook
WimbledonBeddington
Chessington
West Weybridge
St Johns Wood
EalingWillesden
Watford Elstree
Tottenham Redbridge
Barking
Leighton Buzzard
Amersham Main
TilburyCity Rd
NewCross
Hackney
Brimsdown
South Shields
West Boldon
Hawthorne Pit
HartlepoolTod Point
GrangetownGreystones
Lackenby
Stella West
Fourstones
Sloy
Shin
Orrin
Aigas
Quoich
Lochay
Foyers
Rannoch
Glenlee
Clachan
Cassley
Tongland
Errochty
Fasnakyle
Invergarry
Brora
Elgin
Keith
Eccles
Beauly
Thurso
Tealing
Torness
Kintore
Mybster
Dunbeath
Arbroath
Port Ann
Dalmally
Dounreay
LongannetCockenzie
Inveraray
Carradale
Peterhead
Hunterston
St. Fergus
Auchencrosh
Blackhillock
Fort Augustus
Kilmarnock South
Alness
Nairn
MossfordGrudie Bridge
Macduff
Dingwall
Inverness
Lairg
Luichart
DeanieCulligran
Kilmorack
Boat ofGarten
Broadford
Dunvegan
Stornoway
Harris
TaynuiltCruachan
Whistlefield
Nant
Fort William
KillinFinlarig
Errochty Power Station
Clunie
Fraserburgh
Dyce
Persley
Willowdale
Clayhills
Redmoss
Fiddes
TarlandCraigiebuckler
WoodhillGlenMorrison
Caennacroc
Dudhope
Milton of Craigie
Glenagnes
Lyndhurst
Charleston
Burghmuir
Glenrothes
Westfield
Dunoon
AyrCoylton
Maybole
Coalburn
Elvanfoot
Carsfad
Earlstoun
Chapelcross
GretnaDumfries Ecclefechan
Berwick
SCOTTISH HYDRO-ELECTRICTRANSMISSION
St. Fillans
Dunbar
Inverkeithing
Dudhope
NewtonStewart
Glenluce
SP TRANSMISSION LTD
Saltcoats
Meadowhead
Kilwinning
Kaimes
PortobellloShrubhill
MossmorranGlenniston
Redhouse
Leven
Cupar
Currie
GorgieTelford Rd.
Livingston
Bathgate
Grangemouth
DunfemlineKincardine
Devonside
Stirling
Bonnybridge
Easterhouse
Newarthill
Wishaw
Black LawStrathavenClydes Mill
EastKilbride South
Busby
WhiteleeKilmarnock Town
Neilston
Erskine
Devol Moor
Helensburgh
StrathlevenSpango Valley
Lambhill
Broxburn
West Ham
NorthfleetEast
West Thurrock
Windyhill
Stoke Bardolph
Bushbury
Bodelwyddan
Knaresborough
Saltholme
Hedon
Clyde (South)
Clyde (North)
Kendoon
Marshall Meadows
Whitelee Extn
SmeatonCoatbridge
Inverarnan
Whitehouse
Knocknagael
Crystal Rig
Dunlaw Extension
To Ireland
Ratcliffeon Soar
Cleve Hill
Mill Hill
Markhill
Arecleoch
Glendoe
Rocksavage
Ardmore
Strichen
North
Hunterston
HunterstonEast
Necton
B14
B3b
B3b
SC2
SC2
NA
TIO
NA
L G
RID
SH
E T
RA
NS
MIS
SIO
NS
P T
RA
NS
MIS
SIO
N
400kV Circuit275kV Circuit220kV Circuit132kV Circuit400kV Substation275kV Substation132kV Substation
Legend
Note: Not all radial 132kV circuits are indicated on this diagram
1
2
WINDYHILLLONGANNET
Harestanes
31 2
3
1 2
NECTON
MEDWAY
SUTTONBRIDGE
2
SALTHOLMELACKENBY
PENWORTHAM
1
BANK
1 2
1 21 2
1 2
BRIDGWATER
1 2
CHICKERELL
1
2
2
1
DRAKELOW
1
12
2
STALYBRIDGE
1
2
WASHWAY
FARMSTANAH
1
2
FFESTINIOG
SEABANK
1 2
1
1
22
CHESTERFIELD
STAYTHORPE
1 2
12HACKNEY
1 1WIMBLEDON
22LITTLEBROOKHURST
NEW CROSS
RASSAU
1
1
2
2
WYLFA
PENTIR
DINORWIG
CARDIFFEAST
E de F
1
1 1 1 1212
2 2 2 2BOLNEY
NINFIELD
DUNGENESS SELLINDGE
(270kV DC)
INDIANQUEENS EXETER
AXMINSTERMANNINGTON NURSLING
FAWLEY
LOVEDEAN
OCKER
BISHOPSWOOD
1
RUGELEY
LEGACY
1
1
1
112
2
2
2 2
2
2COVENTRY
HAMSHALL
1
IRONBRIDGE
PENN
BUSHBURY
HILL
WILLENHALL
CELLARHEAD
FECKENHAM
BERKSWELL
NECHELLS
BUSTLEHOLM
OLDBURY
KITWELL
ON SOAR
RATCLIFFE
1
2
WILLINGTON EAST
1
2
TRAWSFYNYDD
DEESIDE
HUMBER
GRIMSBYWEST
NEEPSEND
FERRYBRIDGE
RAINHILL
1
1
1
1
1
1
1
1
1
1
22
2
2
2
2
22
2
2
2
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3 4
ALDWARKE
THURCROFT
BRINSWORTH
DAINES
PADIHAM
BRADFORDWEST KIRKSTALL
SKELTONGRANGE
ELLAND
ROCHDALE
WHITEGATE
KEARSLEY
STOCKSBRIDGE
POPPLETON
MONKFRYSTON
OFFERTONBOLDONWEST
HUTTON
HEYSHAM
KIRKBY
LISTER
DRIVE
BIRKENHEAD
FIDDLERSFERRY
FRODSHAM
CAPENHURST
TYNEMOUTH SOUTHSHIELDS
11
1
1
1
1
12
22
2
2
2
2
HIGH
PITSMOOR
JORDANTHORPENORTON LEES
WINCOBANK
TEMPLEBOROUGH
SHEFFIELDCITY
SOUTHMANCHESTER
MACCLESFIELD
BREDBURY
EGGBOROUGH
DRAX
KEADBY
WEST BURTON
COTTAM
MARNHAM
THORPEMARSH
WEST MELTON
BOTLEYWOOD
1
2
BARKING
1
2
21
1
11
1
1
1
2
2
2
2
2
2
2
2
2
1 1
1
1
1
BRAINTREE
2
2
22
2
EATONSOCON
NORWICHMAIN
BURWELL
MAIN
PELHAM
RYE HOUSE
SUNDONWYMONDLEYMAIN
GRENDON
ENDERBY
1
2
2
HINKLEYPOINT
TREMORFA
TAUNTON
1
1
1
1
1 1
1
1
1 1 1 1
1
1
1
1
11
1
1
2
21
W E
34
1
12
2
IVER WATFORDSOUTH
LALEHAM
EALING WILLESDEN
2
1
WESTWEYBRIDGE
DIDCOT
COWLEY
WALHAM
CILFYNYDD CULHAM JET
MAINAMERSHAM
WHITSON
UPPERBOAT
IRON
IMPERIALPARK
ACTON
MINETY
MELKSHAM BRAMLEY
FLEET
ST. JOHN’S
WOOD
ROAD
WALPOLE
BRAMFORD
PEMBROKE
ABERTHAW
ALVERDISCOTT
1
1
1
2
2
2
2
2
1
BEDDINGTON
CHESSINGTON1
22
ROWDOWN
22
2
2 2 2 2
2
2
2 2 2
1
TILBURY
2
2
2
2
2
2
BARKINGREDBRIDGE
BRIMSDOWN
SIZEWELL
WALTHAMCROSS
WARLEYELSTREE
MILL HILL
SHREWSBURY
PATFORDBRIDGE
EASTCLAYDON
LEIGHTONBUZZARD
KILLINGHOLME
12
GRAIN
NORTHFLEET
RAYLEIGH MAIN
CORYTON
EAST
LANDULPH
ABHAM
1
2
THORNTON
21
SPALDINGNORTH
CITY
LANGAGE
1
1
MARCHWOOD
2
1
2 1
3
BRITNED
1
2
1
BICKERFEN
1 2
USKMOUTH
21
HARKER
2
1
FOURSTONES
BLYTH
KINGSNORTH
SINGLEWELL
WESTHAM
WEST THURROCK
1
2
HARTMOOR
HARTLEPOOL
HAWTHORNPIT
STOKEBARDOLPH
EIRGRID
OSBALDWICK
NORTON
SPENNYMOOR
1
2
STELLAWEST
BECK
SALTEND
CREYKE
HUMBER
NORTH
HEDON
SALTEND
REFINERYSOUTH
MARGAM
PYLE
TOD POINT
BAYBAGLAN
1
SWANSEA NORTH
3
TOTTENHAM
CANTERBURYNORTH
2
CLEVEHILL
1
KEMSLEY
MOYLE
TUMMEL
FRASERBURGH
STRICHENST. FERGUS MOBIL
ST. FERGUS GASPETERHEADGRANGE
MOSSMORRAN
MILTON OF CRAIGIE
GLENROTHES
WESTFIELD
FIDDES
DEVONSIDE
CRAIGIEBUCKLER
WESTFIELD
ABERNETHY
BRECHIN GRID
COUPAR ANGUS
BURGHMUIR
GLENNISTON
CHARLESTON
STIRLING
TARLAND
ARBROATH
LEVEN CUPAR
TEALING
RED HOUSE
PERSLEY
PETERHEAD
DUNLAWEXTENSION
AYR
INVERNESS
WHITELEE EXT
CLYDE NORTH
MEADOWHEADKILWINNING
KNOCKNAGAEL
FOYERS
AN SUIDHE
CLYDE SOUTH
CRUACHAN
DALMALLY
PORT ANN
HAGGS ROAD
ERSKINE
DUNVEGAN
CARRADALE
AUCHENCROSH
FERNOCH
GRETNA
ELVANFOOT
COALBURN
TONGLAND
HAWICK
GALASHIELS
DUMFRIES
ECCLES
CHAPELCROSS
INVERARNAN
CRYSTAL
NEILSTON
NEWARTHILL
MAYBOLE
DENNY
KINTORE
KINCARDINE
KILMARNOCK SOUTH
KILLIN
KENDOON
KEITH
KAIMES
INVERARAY
HADYARD HILL
GRANGEMOUTH
GLENLEE
BRACO
EAST KILBRIDE SOUTH
WINDYHILL
WISHAW
FORT AUGUSTUS
FASNAKYLE
ERROCHTY
EASTERHOUSEDEVOLMOOR
DEVOLMOOR
CURRIE
CHARLOTTE STREET
WHITELEE
KILMARNOCK TOWN
COATBRIDGE
BLACKLAW
GLENFARCLAS
WHISTLEFIELD
DUNOON
TAYNUILT
FORT WILLIAM
BRAEHEAD PARK
BONNYBRIDGE
BLACKHILLOCK
BEAULY
TORNESS
LAMBHILL
HELENSBURGH
DOUNREAY
BLACKLAW
GOVAN
COYLTON
COCKENZIE
CLYDE'S MILL
BUSBY
PORT DUNDAS
WEST GEORGE STREET
PAISLEY
BROADFORD
GIFFNOCK
EAST KILBRIDE
DRUMCHAPEL
DALLAS
PORTOBELLO
WHITEHOUSE
SHRUBHILLDEWAR PLACESIGHTHILL
GLENLUCE
STRATHLEVEN
STRATHAVEN
SMEATON
SLOY
SHIN
NEWTON STEWART
DALMARNOCK
GLENDOE
EDINBANE
MARK HILL
HARRIS
ALNESS
BRORA DUNBEATH
MYBSTER
THURSO
FARRWIND FARM
ORRIN
LUICHART
MOSSFORD
GRUDIEBRIDGE
KILMORACK
AIGAS
CULLIGRAN
DEANIE
LAIRG
CASSLEY
BOAT OFGARTEN
NAIRN ELGIN
HUNTERSTON
MOFFAT
HUNTERSTON EAST
HUNTERSTON NORTH
CUMNOCKNEW
Figure A4: GB Existing Transmission System
5
1
2
1 2
3
1 2
GREYSTONES
CARRINGTON
BODELWYDDAN
21
CONNAH’S
MIDDLETON
KNARESBOROUGH
FALLAGO
CROSSAIG
FETTERESSO
RIG
QUAY
1 2
ROCKSAVAGE
21
NA
TIO
NA
L G
RID
SH
E T
RA
NS
MIS
SIO
NS
P T
RA
NS
MIS
SIO
N
400kV Circuit275kV Circuit220kV Circuit132kV Circuit400kV Substation275kV Substation132kV Substation
Legend
Note: Not all radial 132kV circuits are indicated on this diagram
1
2
WINDYHILLLONGANNET
Harestanes
31 2
3
1 2
NECTON
MEDWAY
SUTTONBRIDGE
2
SALTHOLMELACKENBY
PENWORTHAM
1
BANK
1 2
1 21 2
1 2
BRIDGWATER
1 2
CHICKERELL
1
2
2
1
DRAKELOW
1
12
2
STALYBRIDGE
1
2
WASHWAY
FARMSTANAH
1
2
FFESTINIOG
SEABANK
1 2
1
1
22
CHESTERFIELD
STAYTHORPE
1 2
12HACKNEY
1 1WIMBLEDON
22LITTLEBROOKHURST
NEW CROSS
RASSAU
1
1
2
2
WYLFA
PENTIR
DINORWIG
CARDIFFEAST
E de F
1
1 1 1 1212
2 2 2 2BOLNEY
NINFIELD
DUNGENESS SELLINDGE
(270kV DC)
INDIANQUEENS EXETER
AXMINSTERMANNINGTON NURSLING
FAWLEY
LOVEDEAN
OCKER
BISHOPSWOOD
1
RUGELEY
LEGACY
1
1
1
112
2
2
2 2
2
2COVENTRY
HAMSHALL
1
IRONBRIDGE
PENN
BUSHBURY
HILL
WILLENHALL
CELLARHEAD
FECKENHAM
BERKSWELL
NECHELLS
BUSTLEHOLM
OLDBURY
KITWELL
ON SOAR
RATCLIFFE
1
2
WILLINGTON EAST
1
2
TRAWSFYNYDD
DEESIDE
HUMBER
GRIMSBYWEST
NEEPSEND
FERRYBRIDGE
RAINHILL
1
1
1
1
1
1
1
1
1
1
22
2
2
2
2
22
2
2
2
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3 4
ALDWARKE
THURCROFT
BRINSWORTH
DAINES
PADIHAM
BRADFORDWEST KIRKSTALL
SKELTONGRANGE
ELLAND
ROCHDALE
WHITEGATE
KEARSLEY
STOCKSBRIDGE
POPPLETON
MONKFRYSTON
OFFERTONBOLDONWEST
HUTTON
HEYSHAM
KIRKBY
LISTER
DRIVE
BIRKENHEAD
FIDDLERSFERRY
FRODSHAM
CAPENHURST
TYNEMOUTH SOUTHSHIELDS
11
1
1
1
1
12
22
2
2
2
2
HIGH
PITSMOOR
JORDANTHORPENORTON LEES
WINCOBANK
TEMPLEBOROUGH
SHEFFIELDCITY
SOUTHMANCHESTER
MACCLESFIELD
BREDBURY
EGGBOROUGH
DRAX
KEADBY
WEST BURTON
COTTAM
MARNHAM
THORPEMARSH
WEST MELTON
BOTLEYWOOD
1
2
BARKING
1
2
21
1
11
1
1
1
2
2
2
2
2
2
2
2
2
1 1
1
1
1
BRAINTREE
2
2
22
2
EATONSOCON
NORWICHMAIN
BURWELL
MAIN
PELHAM
RYE HOUSE
SUNDONWYMONDLEYMAIN
GRENDON
ENDERBY
1
2
2
HINKLEYPOINT
TREMORFA
TAUNTON
1
1
1
1
1 1
1
1
1 1 1 1
1
1
1
1
11
1
1
2
21
W E
34
1
12
2
IVER WATFORDSOUTH
LALEHAM
EALING WILLESDEN
2
1
WESTWEYBRIDGE
DIDCOT
COWLEY
WALHAM
CILFYNYDD CULHAM JET
MAINAMERSHAM
WHITSON
UPPERBOAT
IRON
IMPERIALPARK
ACTON
MINETY
MELKSHAM BRAMLEY
FLEET
ST. JOHN’S
WOOD
ROAD
WALPOLE
BRAMFORD
PEMBROKE
ABERTHAW
ALVERDISCOTT
1
1
1
2
2
2
2
2
1
BEDDINGTON
CHESSINGTON1
22
ROWDOWN
22
2
2 2 2 2
2
2
2 2 2
1
TILBURY
2
2
2
2
2
2
BARKINGREDBRIDGE
BRIMSDOWN
SIZEWELL
WALTHAMCROSS
WARLEYELSTREE
MILL HILL
SHREWSBURY
PATFORDBRIDGE
EASTCLAYDON
LEIGHTONBUZZARD
KILLINGHOLME
12
GRAIN
NORTHFLEET
RAYLEIGH MAIN
CORYTON
EAST
LANDULPH
ABHAM
1
2
THORNTON
21
SPALDINGNORTH
CITY
LANGAGE
1
1
MARCHWOOD
2
1
2 1
3
BRITNED
1
2
1
BICKERFEN
1 2
USKMOUTH
21
HARKER
2
1
FOURSTONES
BLYTH
KINGSNORTH
SINGLEWELL
WESTHAM
WEST THURROCK
1
2
HARTMOOR
HARTLEPOOL
HAWTHORNPIT
STOKEBARDOLPH
EIRGRID
OSBALDWICK
NORTON
SPENNYMOOR
1
2
STELLAWEST
BECK
SALTEND
CREYKE
HUMBER
NORTH
HEDON
SALTEND
REFINERYSOUTH
MARGAM
PYLE
TOD POINT
BAYBAGLAN
1
SWANSEA NORTH
3
TOTTENHAM
CANTERBURYNORTH
2
CLEVEHILL
1
KEMSLEY
MOYLE
TUMMEL
FRASERBURGH
STRICHENST. FERGUS MOBIL
ST. FERGUS GASPETERHEADGRANGE
MOSSMORRAN
MILTON OF CRAIGIE
GLENROTHES
WESTFIELD
FIDDES
DEVONSIDE
CRAIGIEBUCKLER
WESTFIELD
ABERNETHY
BRECHIN GRID
COUPAR ANGUS
BURGHMUIR
GLENNISTON
CHARLESTON
STIRLING
TARLAND
ARBROATH
LEVEN CUPAR
TEALING
RED HOUSE
PERSLEY
PETERHEAD
DUNLAWEXTENSION
AYR
INVERNESS
WHITELEE EXT
CLYDE NORTH
MEADOWHEADKILWINNING
KNOCKNAGAEL
FOYERS
AN SUIDHE
CLYDE SOUTH
CRUACHAN
DALMALLY
PORT ANN
HAGGS ROAD
ERSKINE
DUNVEGAN
CARRADALE
AUCHENCROSH
FERNOCH
GRETNA
ELVANFOOT
COALBURN
TONGLAND
HAWICK
GALASHIELS
DUMFRIES
ECCLES
CHAPELCROSS
INVERARNAN
CRYSTAL
NEILSTON
NEWARTHILL
MAYBOLE
DENNY
KINTORE
KINCARDINE
KILMARNOCK SOUTH
KILLIN
KENDOON
KEITH
KAIMES
INVERARAY
HADYARD HILL
GRANGEMOUTH
GLENLEE
BRACO
EAST KILBRIDE SOUTH
WINDYHILL
WISHAW
FORT AUGUSTUS
FASNAKYLE
ERROCHTY
EASTERHOUSEDEVOLMOOR
DEVOLMOOR
CURRIE
CHARLOTTE STREET
WHITELEE
KILMARNOCK TOWN
COATBRIDGE
BLACKLAW
GLENFARCLAS
WHISTLEFIELD
DUNOON
TAYNUILT
FORT WILLIAM
BRAEHEAD PARK
BONNYBRIDGE
BLACKHILLOCK
BEAULY
TORNESS
LAMBHILL
HELENSBURGH
DOUNREAY
BLACKLAW
GOVAN
COYLTON
COCKENZIE
CLYDE'S MILL
BUSBY
PORT DUNDAS
WEST GEORGE STREET
PAISLEY
BROADFORD
GIFFNOCK
EAST KILBRIDE
DRUMCHAPEL
DALLAS
PORTOBELLO
WHITEHOUSE
SHRUBHILLDEWAR PLACESIGHTHILL
GLENLUCE
STRATHLEVEN
STRATHAVEN
SMEATON
SLOY
SHIN
NEWTON STEWART
DALMARNOCK
GLENDOE
EDINBANE
MARK HILL
HARRIS
ALNESS
BRORA DUNBEATH
MYBSTER
THURSO
FARRWIND FARM
ORRIN
LUICHART
MOSSFORD
GRUDIEBRIDGE
KILMORACK
AIGAS
CULLIGRAN
DEANIE
LAIRG
CASSLEY
BOAT OFGARTEN
NAIRN ELGIN
HUNTERSTON
MOFFAT
HUNTERSTON EAST
HUNTERSTON NORTH
CUMNOCKNEW
T6
C9C7
C3
C2
C1
C4B1B2E1/E6F6
H1
E8 E7 B3 A8
H2
H6
L2
L5
G1
G6
B4
C5
J2
J3
J1
K1
K4
K6
J7
J4J6
L8
L3
M4
L5
N6
N2
M7
M6
M8
N3
M5
N8
N1
Q8
P1
P2
P3
P5
N7
N5
N4
R4
R5R6 Q7
Q5
Q6 Q4
Q2
P8
P7
K2
K5
L7
P6
S9
T1
T2
T4
T3
S6
S7
S2S4
S5
S1
A6A3
A1A7
A4
J8
J5D5
A9
C6
D4
D6
G5
G7
P4
S3
Figure A5: GB Transmission System ETYS Zones
T5
6
1
2
1 2
3
1 2
GREYSTONES
CARRINGTON
BODELWYDDAN
21
CONNAH’S
MIDDLETON
KNARESBOROUGH
FALLAGO
CROSSAIG
FETTERESSO
RIG
QUAY
1 2
ROCKSAVAGE
21
B5
B5
B2
B4
EC1
NW1
NW3NW4
NW4NW3
NW2
EC3
EC5
EC5EC6
B13
B13SC1
SC1
B10
B10
B12
B12
NW2
B15
B15
B16
B16
B11
B11
B8
B8
B9
B6
B6
B7aB7
B7a
B7
B9B17
B17
B1
B1
B2B3b
B3bB4
B14/B14e
NW1
System Boundaries
B0B0Figure A6: GB Transmission System Boundaries
7
2
SALTHOLMELACKENBY
PENWORTHAM
FRASERBURGH
STRICHENST. FERGUS MOBIL
ST. FERGUS GASPETERHEADGRANGE
MOSSMORRAN
MILTON OF CRAIGIE
GLENROTHES
WESTFIELD
FIDDES
DEVONSIDE
CRAIGIEBUCKLER
WESTFIELD
ABERNETHY
BRECHIN GRID
COUPAR ANGUS
BURGHMUIR
GLENNISTON
CHARLESTON
STIRLING
TARLAND
ARBROATH
LEVEN CUPAR
TEALING
RED HOUSE
PERSLEY
PETERHEAD
DUNLAWEXTENSION
AYR
INVERNESS
WHITELEE EXT
CLYDE NORTH
MEADOWHEADKILWINNING
KNOCKNAGAEL
FOYERS
AN SUIDHE
CLYDE SOUTH
CRUACHAN
DALMALLY
PORT ANN
HAGGS ROAD
ERSKINE
DUNVEGAN
CARRADALE
AUCHENCROSH
FERNOCH
GRETNA
ELVANFOOT
COALBURN
TONGLAND
HAWICK
GALASHIELS
DUMFRIES
ECCLES
CHAPELCROSS
INVERARNAN
CRYSTAL
NEILSTON
NEWARTHILL
MAYBOLE
DENNY
KINTORE
KINCARDINE
KILMARNOCK SOUTH
KILLIN
KENDOON
KEITH
KAIMES
INVERARAY
HADYARD HILL
GRANGEMOUTH
GLENLEE
BRACO
EAST KILBRIDE SOUTH
WINDYHILL
WISHAW
FORT AUGUSTUS
FASNAKYLE
ERROCHTY
EASTERHOUSEDEVOLMOOR
DEVOLMOOR
CURRIE
CHARLOTTE STREET
WHITELEE
KILMARNOCK TOWN
COATBRIDGE
BLACKLAW
GLENFARCLAS
WHISTLEFIELD
DUNOON
TAYNUILT
FORT WILLIAM
BRAEHEAD PARK
BONNYBRIDGE
BLACKHILLOCK
BEAULY
TORNESS
LAMBHILL
HELENSBURGH
DOUNREAY
BLACKLAW
GOVAN
COYLTON
COCKENZIE
CLYDE'S MILL
BUSBY
PORT DUNDAS
WEST GEORGE STREET
PAISLEY
BROADFORD
GIFFNOCK
EAST KILBRIDE
DRUMCHAPEL
DALLAS
PORTOBELLO
WHITEHOUSE
SHRUBHILLDEWAR PLACESIGHTHILL
GLENLUCE
STRATHLEVEN
STRATHAVEN
SMEATON
SLOY
SHIN
NEWTON STEWART
DALMARNOCK
GLENDOE
EDINBANE
MARK HILL
HARRIS
ALNESS
BRORA DUNBEATH
MYBSTER
THURSO
FARRWIND FARM
ORRIN
LUICHART
MOSSFORD
GRUDIEBRIDGE
KILMORACK
AIGAS
CULLIGRAN
DEANIE
LAIRG
CASSLEY
BOAT OFGARTEN
NAIRN ELGIN
HUNTERSTON
MOFFAT
HUNTERSTON EAST
HUNTERSTON NORTH
CUMNOCKNEW
CANTERBURYNORTH
2
CLEVEHILL
1
KEMSLEY
MOYLE
TUMMEL
1
BANK
1 2
1 21 2
1 2
BRIDGWATER
1 2
CHICKERELL
1
2
2
1
DRAKELOW
1
12
2
STALYBRIDGE
1
2
WASHWAY
FARMSTANAH
1
2
FFESTINIOG
SEABANK
1 2
1
1
22
CHESTERFIELD
STAYTHORPE
1 2
12HACKNEY
1 1WIMBLEDON
22LITTLEBROOKHURST
NEW CROSS
RASSAU
1
1
2
2
WYLFA
PENTIR
DINORWIG
CARDIFFEAST
E de F
1
1 1 1 1212
2 2 2 2BOLNEY
NINFIELD
DUNGENESS SELLINDGE
(270kV DC)
INDIANQUEENS EXETER
AXMINSTERMANNINGTON NURSLING
FAWLEY
LOVEDEAN
OCKER
BISHOPSWOOD
1
RUGELEY
LEGACY
1
1
1
112
2
2
2 2
2
2COVENTRY
HAMSHALL
1
IRONBRIDGE
PENN
BUSHBURY
HILL
WILLENHALL
CELLARHEAD
FECKENHAM
BERKSWELL
NECHELLS
BUSTLEHOLM
OLDBURY
KITWELL
ON SOAR
RATCLIFFE
1
2
WILLINGTON EAST
1
2
TRAWSFYNYDD
DEESIDE
HUMBER
GRIMSBYWEST
NEEPSEND
FERRYBRIDGE
RAINHILL
1
1
1
1
1
1
1
1
1
1
22
2
2
2
2
22
2
2
2
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3 4
ALDWARKE
THURCROFT
BRINSWORTH
DAINES
PADIHAM
BRADFORDWEST KIRKSTALL
SKELTONGRANGE
ELLAND
ROCHDALE
WHITEGATE
KEARSLEY
STOCKSBRIDGE
POPPLETON
MONKFRYSTON
OFFERTONBOLDONWEST
HUTTON
HEYSHAM
KIRKBY
LISTER
DRIVE
BIRKENHEAD
FIDDLERSFERRY
FRODSHAM
CAPENHURST
TYNEMOUTH SOUTHSHIELDS
11
1
1
1
1
12
22
2
2
2
2
HIGH
PITSMOOR
JORDANTHORPENORTON LEES
WINCOBANK
TEMPLEBOROUGH
SHEFFIELDCITY
SOUTHMANCHESTER
MACCLESFIELD
BREDBURY
EGGBOROUGH
DRAX
KEADBY
WEST BURTON
COTTAM
MARNHAM
THORPEMARSH
WEST MELTON
BOTLEYWOOD
1
2
BARKING
1
2
21
1
11
1
1
1
2
2
2
2
2
2
2
2
2
1 1
1
1
1
BRAINTREE
2
2
22
2
EATONSOCON
NORWICHMAIN
BURWELL
MAIN
PELHAM
RYE HOUSE
SUNDONWYMONDLEYMAIN
GRENDON
ENDERBY
1
2
2
HINKLEYPOINT
TREMORFA
TAUNTON
1
1
1
1
1 1
1
1
1 1 1 1
1
1
1
1
11
1
1
2
21
W E
34
1
12
2
IVER WATFORDSOUTH
LALEHAM
EALING WILLESDEN
2
1
WESTWEYBRIDGE
DIDCOT
COWLEY
WALHAM
CILFYNYDD CULHAM JET
MAINAMERSHAM
WHITSON
UPPERBOAT
IRON
IMPERIALPARK
ACTON
MINETY
MELKSHAM BRAMLEY
FLEET
ST. JOHN’S
WOOD
ROAD
WALPOLE
BRAMFORD
PEMBROKE
ABERTHAW
ALVERDISCOTT
1
1
1
2
2
2
2
2
1
BEDDINGTON
CHESSINGTON1
22
ROWDOWN
22
2
2 2 2 2
2
2
2 2 2
1
TILBURY
2
2
2
2
2
2
BARKINGREDBRIDGE
BRIMSDOWN
SIZEWELL
WALTHAMCROSS
WARLEYELSTREE
MILL HILL
SHREWSBURY
PATFORDBRIDGE
EASTCLAYDON
LEIGHTONBUZZARD
KILLINGHOLME
12
GRAIN
NORTHFLEET
RAYLEIGH MAIN
CORYTON
EAST
LANDULPH
ABHAM
1
2
THORNTON
21
SPALDINGNORTH
CITY
LANGAGE
1
1
MARCHWOOD
2
1
2 1
3
BRITNED
1
2
1
BICKERFEN
1 2
USKMOUTH
21
HARKER
2
1
FOURSTONES
BLYTH
KINGSNORTH
SINGLEWELL
WESTHAM
WEST THURROCK
1
2
HARTMOOR
HARTLEPOOL
HAWTHORNPIT
STOKEBARDOLPH
EIRGRID
OSBALDWICK
NORTON
SPENNYMOOR
1
2
STELLAWEST
BECK
SALTEND
CREYKE
HUMBER
NORTH
HEDON
SALTEND
REFINERYSOUTH
MARGAM
PYLE
TOD POINT
BAYBAGLAN
1
SWANSEA NORTH
3
TOTTENHAM
1
2
WINDYHILLLONGANNET
Harestanes
31 2
3
1 2
NECTON
MEDWAY
SUTTONBRIDGE
NA
TIO
NA
L G
RID
SH
E T
RA
NS
MIS
SIO
NS
P T
RA
NS
MIS
SIO
N
400kV Circuit275kV Circuit220kV Circuit132kV Circuit400kV Substation275kV Substation132kV Substation
Legend
Note: Not all radial 132kV circuits are indicated on this diagram
SW1
SW1
1
2
1 2
3
1 2
GREYSTONES
CARRINGTON
BODELWYDDAN
21
CONNAH’S
MIDDLETON
KNARESBOROUGH
FALLAGO
CROSSAIG
FETTERESSO
RIG
QUAY
1 2
ROCKSAVAGE
21
B2a
B2a
B1a
B1a
SC2
SC2
2
SALTHOLMELACKENBY
PENWORTHAM
FRASERBURGH
STRICHENST. FERGUS MOBIL
ST. FERGUS GASPETERHEADGRANGE
MOSSMORRAN
MILTON OF CRAIGIE
GLENROTHES
WESTFIELD
FIDDES
DEVONSIDE
CRAIGIEBUCKLER
WESTFIELD
ABERNETHY
BRECHIN GRID
COUPAR ANGUS
BURGHMUIR
GLENNISTON
CHARLESTON
STIRLING
TARLAND
ARBROATH
LEVEN CUPAR
TEALING
RED HOUSE
PERSLEY
PETERHEAD
DUNLAWEXTENSION
AYR
INVERNESS
WHITELEE EXT
CLYDE NORTH
MEADOWHEADKILWINNING
KNOCKNAGAEL
FOYERS
AN SUIDHE
CLYDE SOUTH
CRUACHAN
DALMALLY
PORT ANN
HAGGS ROAD
ERSKINE
DUNVEGAN
CARRADALE
AUCHENCROSH
FERNOCH
GRETNA
ELVANFOOT
COALBURN
TONGLAND
HAWICK
GALASHIELS
DUMFRIES
ECCLES
CHAPELCROSS
INVERARNAN
CRYSTAL
NEILSTON
NEWARTHILL
MAYBOLE
DENNY
KINTORE
KINCARDINE
KILMARNOCK SOUTH
KILLIN
KENDOON
KEITH
KAIMES
INVERARAY
HADYARD HILL
GRANGEMOUTH
GLENLEE
BRACO
EAST KILBRIDE SOUTH
WINDYHILL
WISHAW
FORT AUGUSTUS
FASNAKYLE
ERROCHTY
EASTERHOUSEDEVOLMOOR
DEVOLMOOR
CURRIE
CHARLOTTE STREET
WHITELEE
KILMARNOCK TOWN
COATBRIDGE
BLACKLAW
GLENFARCLAS
WHISTLEFIELD
DUNOON
TAYNUILT
FORT WILLIAM
BRAEHEAD PARK
BONNYBRIDGE
BLACKHILLOCK
BEAULY
TORNESS
LAMBHILL
HELENSBURGH
DOUNREAY
BLACKLAW
GOVAN
COYLTON
COCKENZIE
CLYDE'S MILL
BUSBY
PORT DUNDAS
WEST GEORGE STREET
PAISLEY
BROADFORD
GIFFNOCK
EAST KILBRIDE
DRUMCHAPEL
DALLAS
PORTOBELLO
WHITEHOUSE
SHRUBHILLDEWAR PLACESIGHTHILL
GLENLUCE
STRATHLEVEN
STRATHAVEN
SMEATON
SLOY
SHIN
NEWTON STEWART
DALMARNOCK
GLENDOE
EDINBANE
MARK HILL
HARRIS
ALNESS
BRORA DUNBEATH
MYBSTER
THURSO
FARRWIND FARM
ORRIN
LUICHART
MOSSFORD
GRUDIEBRIDGE
KILMORACK
AIGAS
CULLIGRAN
DEANIE
LAIRG
CASSLEY
BOAT OFGARTEN
NAIRN ELGIN
HUNTERSTON
MOFFAT
HUNTERSTON EAST
HUNTERSTON NORTH
CUMNOCKNEW
CANTERBURYNORTH
2
CLEVEHILL
1
KEMSLEY
MOYLE
TUMMEL
1
BANK
1 2
1 21 2
1 2
BRIDGWATER
1 2
CHICKERELL
1
2
2
1
DRAKELOW
1
12
2
STALYBRIDGE
1
2
WASHWAY
FARMSTANAH
1
2
FFESTINIOG
SEABANK
1 2
1
1
22
CHESTERFIELD
STAYTHORPE
1 2
12HACKNEY
1 1WIMBLEDON
22LITTLEBROOKHURST
NEW CROSS
RASSAU
1
1
2
2
WYLFA
PENTIR
DINORWIG
CARDIFFEAST
E de F
1
1 1 1 1212
2 2 2 2BOLNEY
NINFIELD
DUNGENESS SELLINDGE
(270kV DC)
INDIANQUEENS EXETER
AXMINSTERMANNINGTON NURSLING
FAWLEY
LOVEDEAN
OCKER
BISHOPSWOOD
1
RUGELEY
LEGACY
1
1
1
112
2
2
2 2
2
2COVENTRY
HAMSHALL
1
IRONBRIDGE
PENN
BUSHBURY
HILL
WILLENHALL
CELLARHEAD
FECKENHAM
BERKSWELL
NECHELLS
BUSTLEHOLM
OLDBURY
KITWELL
ON SOAR
RATCLIFFE
1
2
WILLINGTON EAST
1
2
TRAWSFYNYDD
DEESIDE
HUMBER
GRIMSBYWEST
NEEPSEND
FERRYBRIDGE
RAINHILL
1
1
1
1
1
1
1
1
1
1
22
2
2
2
2
22
2
2
2
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3 4
ALDWARKE
THURCROFT
BRINSWORTH
DAINES
PADIHAM
BRADFORDWEST KIRKSTALL
SKELTONGRANGE
ELLAND
ROCHDALE
WHITEGATE
KEARSLEY
STOCKSBRIDGE
POPPLETON
MONKFRYSTON
OFFERTONBOLDONWEST
HUTTON
HEYSHAM
KIRKBY
LISTER
DRIVE
BIRKENHEAD
FIDDLERSFERRY
FRODSHAM
CAPENHURST
TYNEMOUTH SOUTHSHIELDS
11
1
1
1
1
12
22
2
2
2
2
HIGH
PITSMOOR
JORDANTHORPENORTON LEES
WINCOBANK
TEMPLEBOROUGH
SHEFFIELDCITY
SOUTHMANCHESTER
MACCLESFIELD
BREDBURY
EGGBOROUGH
DRAX
KEADBY
WEST BURTON
COTTAM
MARNHAM
THORPEMARSH
WEST MELTON
BOTLEYWOOD
1
2
BARKING
1
2
21
1
11
1
1
1
2
2
2
2
2
2
2
2
2
1 1
1
1
1
BRAINTREE
2
2
22
2
EATONSOCON
NORWICHMAIN
BURWELL
MAIN
PELHAM
RYE HOUSE
SUNDONWYMONDLEYMAIN
GRENDON
ENDERBY
1
2
2
HINKLEYPOINT
TREMORFA
TAUNTON
1
1
1
1
1 1
1
1
1 1 1 1
1
1
1
1
11
1
1
2
21
W E
34
1
12
2
IVER WATFORDSOUTH
LALEHAM
EALING WILLESDEN
2
1
WESTWEYBRIDGE
DIDCOT
COWLEY
WALHAM
CILFYNYDD CULHAM JET
MAINAMERSHAM
WHITSON
UPPERBOAT
IRON
IMPERIALPARK
ACTON
MINETY
MELKSHAM BRAMLEY
FLEET
ST. JOHN’S
WOOD
ROAD
WALPOLE
BRAMFORD
PEMBROKE
ABERTHAW
ALVERDISCOTT
1
1
1
2
2
2
2
2
1
BEDDINGTON
CHESSINGTON1
22
ROWDOWN
22
2
2 2 2 2
2
2
2 2 2
1
TILBURY
2
2
2
2
2
2
BARKINGREDBRIDGE
BRIMSDOWN
SIZEWELL
WALTHAMCROSS
WARLEYELSTREE
MILL HILL
SHREWSBURY
PATFORDBRIDGE
EASTCLAYDON
LEIGHTONBUZZARD
KILLINGHOLME
12
GRAIN
NORTHFLEET
RAYLEIGH MAIN
CORYTON
EAST
LANDULPH
ABHAM
1
2
THORNTON
21
SPALDINGNORTH
CITY
LANGAGE
1
1
MARCHWOOD
2
1
2 1
3
BRITNED
1
2
1
BICKERFEN
1 2
USKMOUTH
21
HARKER
2
1
FOURSTONES
BLYTH
KINGSNORTH
SINGLEWELL
WESTHAM
WEST THURROCK
1
2
HARTMOOR
HARTLEPOOL
HAWTHORNPIT
STOKEBARDOLPH
EIRGRID
OSBALDWICK
NORTON
SPENNYMOOR
1
2
STELLAWEST
BECK
SALTEND
CREYKE
HUMBER
NORTH
HEDON
SALTEND
REFINERYSOUTH
MARGAM
PYLE
TOD POINT
BAYBAGLAN
1
SWANSEA NORTH
3
TOTTENHAM
1
2
WINDYHILLLONGANNET
Harestanes
31 2
3
1 2
NECTON
MEDWAY
SUTTONBRIDGE
NA
TIO
NA
L G
RID
SH
E T
RA
NS
MIS
SIO
NS
P T
RA
NS
MIS
SIO
N
400kV Circuit275kV Circuit220kV Circuit132kV Circuit400kV Substation275kV Substation132kV Substation
Legend
Note: Not all radial 132kV circuits are indicated on this diagram
2 x 45MVAr
1 x 50MVAr2 x 20MVAr
2 x -75/+150MVAr
2 x -30MVAr1 x 56MVAr1 x 0/+60MVAr 1 x -60MVAr
1 x 225MVAr
6 x 60MVAr2 x -75/+150MVAr
2 x 45MVAr1 x 0/+60MVAr
2 x -60MVAr2 x -200MVAr1 x 225MVAr
1 x -74/+150MVAr2 x -60MVAr
1 x 225MVAr3 x 60MVAr
2 x -60MVAr
4 x 60MVAr1 x 225MVAr 1 x -150/+150MVAr
2 x -100MVAr4 x -60MVAr2 x 150MVAr
2 x -150/+150MVAr
2 x -200MVAr
2 x -60MVAr4 x -100MVAr
1 x +150MVAr2 x -100MVAr
2 x -100MVAr
3 x -200MVAr
3 x 60MVAr2 x -100/150MVAr
1 x -200MVAr2 x +60MVAr
1 x 225MVAr 2 x -60MVAr
2 x -60MVAr1 x -200MVAr
3 x 60MVAr
2 x 60MVAr
1 x 60MVAr
2 x 0/+60MVAr
1 x 45MVAr
2 x -60MVAr1 x -200MVAr
2 x -60MVAr2 x -60MVAr3 x 60MVAr
1 x 45MVAr2 x 0/+60MVAr
2 x -200MVAr3 x 60MVAr
3 x -100MVAr
2 x -60MVAr
1 x -200MVAr2 x -60MVAr
2 x 0/+60MVAr
3 x -100MVAr
3 x 60MVAr
2 x 225MVAr
1 x -60MVAr
3 x 60MVAr
3 x 60MVAr
2 x -60MVAr2 x -75/+150MVAr
2 x -60MVAr2 x 225MVAr
4 x -60MVAr1 x 60MVAr
2 x 225MVAr1 x -50/+225MVAr
3 x 60MVAr1 x 150MVAr
1 x -60MVAr1 x -75/+150MVAr
2 x -60MVAr1 x 20MVAr
1 x -60MVAr1 x 0/+60MVAr
1 x 150MVAr
1 x 0/+60MVAr
3 x 60MVAr
3 x 60MVAr1 x 225MVAr
1 x -100MVAr
2 x -60MVAr
2 x 225MVAr4 x 60MVAr
2 x -75/150MVAr
2 x 225MVAr1 x -75/+150MVAr
1 x 0/+60MVAr
1 x 225MVAr1 x -75/+150MVAr
2 x -60MVAr
2 x -60MVAr1 x 150MVAr
1 x -60MVAr3 x 60MVAr
1 x 60MVAr
1 x -60MVAr
1 x 150MVAr
1 x -100MVAr
4 x 45MVAr 4 x 45MVAr
1 x -60MVAr
2 x -60MVAr1 x 60MVAr
2 x -60MVAr1 x 150MVAr
2 x -75/+150MVAr
1 x -60MVAr
2 x -60MVAr
1 x 150MVAr
1 x -100MVAr
3 x 60MVAr1 x 150MVAr
3 x 20MVAr
1 x -60MVAr
3 x 20MVAr
1 x 60MVAr
1 x -200MVAr
2 x -60MVAr3 x 60MVAr
1 x 225MVAr
1 x -60MVAr
3 x 60MVAr4 x 225MVAr
1 x -60MVAr
1 x -60MVAr1 x -60 to -30MVAr
-200MVAr
4 x -60MVAr
1 x -60MVAr3 x 60MVAr1 x 0/+60MVAr
2 x 225MVAr
2 x -60MVAr
3 x 60MVAr
1 x -60MVAr
2 x -60 to -30MVAr
1 x -200MVAr
3 x 45MVAr
2 x -60MVAr
2 x -60MVAr
2 x 45MVAr1 x -75/225MVAr
1 x -60MVAr
1 x -50MVAr
2 x -60MVAr
2 x -60MVAr
2 x -150MVAr
2 x -60MVAr
1 x -60MVAr
1 x -60MVAr
2 x -30MVAr
1 x 150MVAr
1 x 225MVAr
1 x -200MVAr
3 x 225MVAr
2 x 225MVAr
1 x 225MVAr
Figure A7: GB Reactive Compensation Plant
2 x 35%
SVCMSCReactorSeries Capacitor
1 x -200MVAr
4 x -30MVAr1 x -200MVAr
1 x -60MVAr
1 x -200MVAr
1 x 225MVAr3 x 60MVAr
1 x -60MVAr
3 x 60MVAr
1 x -200MVAr
2 x 225MVAr
1 x -60MVAr
1 x 150MVAr3 x 60MVAr
1 x -200MVAr
1 x -60MVAr
1 x -200MVAr
1 x -45/+45MVAr
1 x 150MVAr 1 x -100MVAr
2 x 150MVAr
1 x 225MVAr
2 x 225MVAr
4 x -60MVAr
2 x 45MVAr1 x -150/+150MVAr
2 x -90MVAr
2 x -60MVAr
TOTTENHAM
PITSMOOR
1 x 225MVAr2 x -60MVAr
8
1 x 225MVAr
1 x -60MVAr
2 x -60MVAr
1 x -100MVAr
1 x -100MVAr1 x -100MVAr
1 x -100MVAr1 x -100MVAr
1 x -200MVAr
1 x -200MVAr
1 x -200MVAr1 x -200MVAr
1 x -200MVAr
1 x -200MVAr
1 x -200MVAr
1 x -60MVAr
1 x -100MVAr
1 x 560MVAr
1 x 560MVAr
2 x 442MVAr
1
2
1 2
3
1 2
GREYSTONES
CARRINGTON
BODELWYDDAN
21
CONNAH’S
MIDDLETON
KNARESBOROUGH
FALLAGO
CROSSAIG
FETTERESSO
RIG
QUAY
1 2
ROCKSAVAGE
21