1 |
Centrica PLC
|
Unitedkingdom
|
Windsor
|
Millstream
|
Maidenhead Road
|
Windsor and Maidenhead
|
SL4 5GD
|
centrica.com
|
1995
|
$25,243,351,666
|
21704
|
Corporation
|
240
|
03033654
|
*******@*******.***
|
01*****00
|
0889668714
|
2 |
Edf Energy Customers LIMITED
|
Unitedkingdom
|
London
|
Nova North
|
11 Bressenden Place
|
London
|
SW1E 5BY
|
N/A
|
1988
|
$22,004,563,490
|
3492
|
Corporation
|
30997
|
02228297
|
******@*******.***
|
02*****64
|
0509997024
|
3 |
Edf Energy LIMITED
|
Unitedkingdom
|
Bridgwater
|
18-19 Angel Place Shopping Centre
|
N/A
|
Somerset
|
TA6 3TQ
|
edfenergy.com
|
1989
|
$17,324,200,065
|
774
|
Corporation
|
30997
|
02366852
|
******@*******.***
|
02*****64
|
0351031766
|
4 |
British Gas LIMITED
|
Unitedkingdom
|
Windsor
|
Millstream
|
Maidenhead Road
|
Windsor and Maidenhead
|
SL4 5GD
|
britishgas.co.uk
|
2013
|
$16,765,173,968
|
286
|
Corporation
|
240
|
08811254
|
*******@*******.***
|
08*****11
|
0330903513
|
5 |
E.ON Next Energy LIMITED
|
Unitedkingdom
|
Aldermans Green
|
Westwood House
|
Westwood Way, Westwood Business Park
|
Coventry, West Midlands
|
CV4 8HS
|
eonenergy.com
|
1990
|
$15,362,311,375
|
3321
|
Corporation
|
1324
|
03782443
|
******@*****.***
|
08*****01
|
0349006544
|
6 |
E.ON UK Energy Markets LIMITED
|
Unitedkingdom
|
Aldermans Green
|
Westwood Way
|
Westwood Business Park
|
Coventry, West Midlands
|
CV4 8LG
|
gienergy.net
|
2015
|
$10,314,249,625
|
93
|
Corporation
|
1324
|
09884706
|
***********@***.***
|
02*****31
|
0332374695
|
7 |
Ovo Energy LTD
|
Unitedkingdom
|
Wood Green
|
M B A Group Ltd M B A House
|
Garman Road
|
London
|
N17 0HW
|
ovoenergy.com
|
2009
|
$10,178,388,210
|
4169
|
Corporation
|
22
|
06890795
|
******@****.***
|
03*****63
|
0326676440
|
8 |
Cnooc U.K. Marketing LTD
|
Unitedkingdom
|
Marylebone
|
Level 6, 10 Portman Square
|
N/A
|
London
|
W1H 6AZ
|
N/A
|
2019
|
$10,080,718,000
|
219
|
Corporation
|
118
|
11894677
|
*******@*******.***
|
|
0336045506
|
9 |
Octopus Energy LIMITED
|
Unitedkingdom
|
Moorgate
|
6th Floor
|
33 Holborn
|
London
|
EC1N 2HT
|
octopusenergyreferral.co.uk
|
2014
|
$10,069,767,254
|
1739
|
Corporation
|
76
|
09263424
|
*******@****.***
|
08*****88
|
0331548223
|
10 |
Scottishpower Energy Retail LIMITED
|
Unitedkingdom
|
Glasgow
|
Scottishpower House
|
320 St. Vincent Street
|
Glasgow City
|
G2 5AD
|
scottishpower.co.uk/commercial-business
|
1998
|
$9,486,118,211
|
925
|
Corporation
|
2889
|
SC190287
|
*******@***.***
|
01*****14
|
0347651497
|
11 |
Drax Power LIMITED
|
Unitedkingdom
|
Selby
|
Drax Power Station
|
N/A
|
North Yorkshire
|
YO8 8PH
|
drax.com
|
2003
|
$8,463,542,937
|
708
|
Corporation
|
58
|
04883589
|
***********@***.***
|
01*****81
|
0847341013
|
12 |
Npower Commercial Gas LIMITED
|
Unitedkingdom
|
Aldermans Green
|
Westwood Way
|
Westwood Business Park
|
Coventry, West Midlands
|
CV4 8LG
|
N/A
|
1990
|
$8,275,894,641
|
1006
|
Corporation
|
1324
|
03768856
|
************@******.***
|
08*****00
|
0348866763
|
13 |
Drax Group PLC
|
Unitedkingdom
|
Moorgate
|
10 Noble Street
|
N/A
|
London
|
EC2V 7JX
|
draxteachingzone.org
|
2005
|
$7,812,090,325
|
3457
|
Corporation
|
58
|
05562053
|
*********@******.***
|
01*****81
|
0458719449
|
14 |
Centrica Energy Marketing LIMITED
|
Unitedkingdom
|
Windsor
|
Millstream
|
Maidenhead Road
|
Windsor and Maidenhead
|
SL4 5GD
|
centrica.com
|
2013
|
$7,652,113,752
|
234
|
Corporation
|
240
|
08807923
|
*******@***.***
|
01*****00
|
0330899164
|
15 |
Shell Energy Europe LIMITED
|
Unitedkingdom
|
Herne Hill
|
Shell Centre
|
4-8 York Road
|
London
|
SE1 7NA
|
shell.com
|
2001
|
$7,594,069,061
|
230
|
Corporation
|
6076
|
04162523
|
**********@*******.***
|
02*****00
|
0332548188
|
16 |
Totalenergies Gas & Power LIMITED
|
Unitedkingdom
|
Canary Wharf
|
10 Upper Bank Street
|
N/A
|
London
|
E14 5BF
|
totalgp.com
|
1987
|
$7,384,086,602
|
758
|
Corporation
|
5613
|
02172239
|
******@*******.***
|
02*****00
|
0508411405
|
17 |
Scottishpower Energy Management LIMITED
|
Unitedkingdom
|
Cathcart
|
Spean Street Cathcart Business Park
|
N/A
|
Glasgow City
|
G44 4BE
|
N/A
|
2001
|
$7,075,762,208
|
58
|
Corporation
|
2889
|
SC215843
|
*****@******.***
|
01*****47
|
0332538247
|
18 |
Sefe Marketing & Trading LIMITED
|
Unitedkingdom
|
Saint Johns Wood
|
20 Triton Street
|
N/A
|
London
|
NW1 3BF
|
gazprom-mt.com
|
1999
|
$6,690,777,076
|
749
|
Corporation
|
6119
|
03768267
|
******@******.***
|
02*****00
|
0348860568
|
19 |
Statkraft Markets GMBH
|
Unitedkingdom
|
Moorgate
|
41 Moorgate
|
N/A
|
London
|
EC2R 6PP
|
statkraft.com
|
2018
|
$5,336,099,920
|
181
|
Foreign company
|
3073
|
FC035811
|
******@********.***
|
02*****00
|
0335703327
|
20 |
Drax Energy Solutions LIMITED
|
Unitedkingdom
|
Selby
|
Drax Power Station
|
Drax
|
North Yorkshire
|
YO8 8PH
|
havenpower.com
|
2006
|
$5,224,733,940
|
398
|
Corporation
|
58
|
05893966
|
*********@******.***
|
01*****56
|
0627248568
|
21 |
Octopus Energy Operations 2 LIMITED
|
Unitedkingdom
|
Coventry
|
Octopus Energy Ltd
|
2 Friargate
|
Coventry, West Midlands
|
CV1 2GN
|
N/A
|
2004
|
$5,111,725,170
|
1246
|
Corporation
|
76
|
05070887
|
******@*******.***
|
07*****48
|
0849258874
|
22 |
Vpi Holding LIMITED
|
Unitedkingdom
|
London
|
10th Floor
|
160 Victoria Street
|
London
|
SW1E 5LB
|
vitol.com
|
2013
|
$4,947,349,802
|
262
|
Corporation
|
19
|
08484743
|
*********@****.***
|
02*****00
|
0330474401
|
23 |
Edf Energy Nuclear Generation LIMITED
|
Unitedkingdom
|
Gloucester
|
Building 1420 Javelin House
|
Charlton Court, Gloucester Business Park, Brockworth
|
Gloucestershire
|
GL3 4AE
|
N/A
|
1995
|
$4,246,604,045
|
5112
|
Corporation
|
30997
|
03076445
|
******@***.***
|
08*****34
|
0601618815
|
24 |
E.ON UK PLC
|
Unitedkingdom
|
Aldermans Green
|
Westwood House
|
Westwood Way, Westwood Business Park
|
Coventry, West Midlands
|
CV4 8HS
|
eonenergy.co.uk
|
1989
|
$4,219,182,475
|
795
|
Corporation
|
1324
|
02366970
|
************@****.***
|
03*****08
|
0349455794
|
25 |
Sse Hornsea LIMITED
|
Unitedkingdom
|
Reading
|
43 Forbury Road
|
N/A
|
Reading
|
RG1 3JH
|
N/A
|
2002
|
$3,756,060,916
|
92
|
Corporation
|
305
|
04467860
|
************@***.***
|
|
0535913584
|
26 |
Rwe Generation UK PLC
|
Unitedkingdom
|
Grange Park
|
Windmill Hill Business Park Whitehill Way
|
N/A
|
Swindon
|
SN5 6PB
|
rwe.com
|
1958
|
$3,496,250,175
|
792
|
Corporation
|
928
|
03892782
|
*********@********.***
|
01*****77
|
0350132321
|
27 |
National Grid Electricity Transmission PLC
|
Unitedkingdom
|
Marylebone
|
1 - 3 Strand
|
N/A
|
London
|
WC2N 5EH
|
nationalgrid.com
|
1989
|
$3,471,018,585
|
5328
|
Corporation
|
575
|
02366977
|
*******@*****.***
|
02*****00
|
0347852158
|
28 |
E D F Trading LIMITED
|
Unitedkingdom
|
London
|
3rd Floor
|
80 Victoria Street
|
London
|
SW1E 5JL
|
edftrading.com
|
1999
|
$3,397,295,251
|
529
|
Corporation
|
30997
|
03750288
|
******@*******.***
|
08*****70
|
0348675363
|
29 |
Sefe Energy LIMITED
|
Unitedkingdom
|
Manchester
|
No 8, First Street
|
N/A
|
Manchester, Greater Manchester
|
M15 4RP
|
gazprom-energy.com
|
2000
|
$2,997,477,992
|
277
|
Corporation
|
6119
|
03904624
|
***********@***.***
|
01*****95
|
0350253606
|
30 |
Cadent Gas LIMITED
|
Unitedkingdom
|
Withybrook
|
Ansty Park Pilot Way
|
Ansty
|
Warwickshire
|
CV7 9JU
|
cadentgas.com
|
2016
|
$2,889,765,747
|
6215
|
Corporation
|
11
|
10080864
|
*****@*******.***
|
08*****00
|
0332778499
|
31 |
Ep UK Investments LTD
|
Unitedkingdom
|
London
|
Byron House
|
7-9 St. James'S Street
|
London
|
SW1A 1EE
|
putnam.com
|
2014
|
$2,805,745,128
|
211
|
Corporation
|
2685
|
09255154
|
***********@******.***
|
02*****99
|
0331526399
|
32 |
Vpi Power LIMITED
|
Unitedkingdom
|
Edinburgh
|
Building 1
|
9 Haymarket Square
|
City of Edinburgh
|
EH3 8RY
|
N/A
|
2001
|
$2,711,120,769
|
146
|
Corporation
|
19
|
SC189124
|
**********@******.***
|
02*****00
|
0347412585
|
33 |
National Grid Electricity Distribution PLC
|
Unitedkingdom
|
Saint Philips
|
Avonbank
|
Feeder Road
|
City of Bristol
|
BS2 0TB
|
nationalgrid.co.uk
|
2014
|
$2,332,879,840
|
6872
|
Corporation
|
575
|
09223384
|
***********@*******.***
|
01*****00
|
0331485005
|
34 |
National Gas Transmission PLC
|
Unitedkingdom
|
Warwick
|
National Grid House
|
Warwick Technology Park Gallows Hill
|
Warwickshire
|
CV34 6DA
|
nationalgrid.com
|
1986
|
$2,256,479,358
|
1872
|
Corporation
|
575
|
02006000
|
********@******.***
|
01*****00
|
0407946907
|
35 |
Vpi Immingham Llp
|
Unitedkingdom
|
London
|
160 Victoria Street
|
N/A
|
London
|
SW1E 5LB
|
vpi-i.com
|
2001
|
$2,207,561,029
|
116
|
Partnership of unknown type
|
N/A
|
OC300980
|
******@*******.***
|
01*****00
|
0534462659
|
36 |
Corona Energy Retail 4 LIMITED
|
Unitedkingdom
|
Watford
|
Building 2
|
Marlins Meadow
|
Hertfordshire
|
WD18 8YA
|
coronaenergy.co.uk
|
1993
|
$2,098,063,010
|
3
|
Corporation
|
1190
|
02798334
|
*******@***.***
|
08*****64
|
0347480051
|
37 |
B.B. Energy Trading LIMITED
|
Unitedkingdom
|
Ladbroke Grove
|
Bb House
|
12-14 Ansdell Street
|
London
|
W8 5BN
|
bbenergy.com
|
2002
|
$1,970,241,000
|
61
|
Corporation
|
6
|
04511776
|
*******@********.***
|
02*****00
|
0752194513
|
38 |
Bulb Energy LTD
|
Unitedkingdom
|
Marylebone
|
United Kingdom House
|
180 Oxford Street
|
London
|
W1D 1NN
|
N/A
|
2013
|
$1,965,679,560
|
2
|
Corporation
|
3
|
08469555
|
********@*******.***
|
03*****35
|
0330454354
|
39 |
Saltend Cogeneration Company LIMITED
|
Unitedkingdom
|
Paull
|
Hedon Road
|
Saltend
|
East Riding of Yorkshire
|
HU12 8GA
|
tritonpower.co.uk
|
1996
|
$1,771,903,328
|
646
|
Corporation
|
11
|
03274929
|
************@****.***
|
01*****00
|
0655398539
|
40 |
UK Power Networks (operations) LIMITED
|
Unitedkingdom
|
Rotherhithe
|
Newington House
|
237 Southwark Bridge Road
|
London
|
SE1 6NP
|
ukpowernetworks.co.uk
|
2000
|
$1,731,955,782
|
5165
|
Corporation
|
8
|
03870728
|
*****@***.***
|
08*****38
|
0349905969
|
41 |
Keadby Generation LIMITED
|
Unitedkingdom
|
Scunthorpe
|
Scottish & Southern Energy Plc
|
Keadby Power Station, Trentside, Keadby
|
North Lincolnshire
|
DN17 3EF
|
sse.com
|
1992
|
$1,413,408,921
|
47
|
Corporation
|
305
|
02729513
|
*******@****.***
|
01*****00
|
0456934938
|
42 |
Power Ni Energy LIMITED
|
Unitedkingdom
|
Antrim
|
Po Box 103
|
N/A
|
Antrim and Newtownabbey
|
BT41 9BB
|
N/A
|
1993
|
$1,358,075,681
|
552
|
Corporation
|
69
|
NI027394
|
************@********.***
|
07*****65
|
0343267178
|
43 |
Electricity Plus Supply LIMITED
|
Unitedkingdom
|
Mill Hill
|
333 Edgware Road
|
N/A
|
London
|
NW9 6TD
|
N/A
|
2004
|
$1,356,531,173
|
3
|
Corporation
|
31
|
05199936
|
*******@****.***
|
02*****70
|
0850583743
|
44 |
E.ON Energy Solutions LIMITED
|
Unitedkingdom
|
Aldermans Green
|
Westwood Way
|
Westwood Business Park
|
Coventry, West Midlands
|
CV4 8LG
|
gienergy.net
|
1992
|
$1,338,671,190
|
3806
|
Corporation
|
1324
|
03407430
|
*********@***.***
|
02*****31
|
0647131401
|
45 |
Petredec (europe) LIMITED
|
Unitedkingdom
|
City of London
|
Level 43, the Leadenhall Building
|
122 Leadenhall Street
|
London
|
EC3V 4AB
|
petredec.com
|
1980
|
$1,268,528,000
|
9
|
Corporation
|
21
|
09605998
|
**********@******.***
|
02*****00
|
0332008398
|
46 |
Brook Green Trading LIMITED
|
Unitedkingdom
|
Shepherd'S Bush
|
245 Hammersmith Road
|
N/A
|
London
|
W6 8PW
|
N/A
|
2015
|
$1,254,716,465
|
243
|
Corporation
|
23
|
09523064
|
*********@******.***
|
01*****80
|
0331899895
|
47 |
Brook Green Supply LIMITED
|
Unitedkingdom
|
Shepherd'S Bush
|
245 Hammersmith Road
|
N/A
|
London
|
W6 8PW
|
brookgreensupply.com
|
2015
|
$1,253,399,535
|
125
|
Corporation
|
19
|
09910619
|
************@******.***
|
02*****40
|
0332408479
|
48 |
West Burton B LIMITED
|
Unitedkingdom
|
Retford
|
N/A
|
N/A
|
Nottinghamshire
|
DN22 9BL
|
edfenergy.com
|
2020
|
$1,208,433,690
|
73
|
Corporation
|
12
|
13027787
|
*********@*****.***
|
01*****00
|
0337571011
|
49 |
Orsted Wind Power A/S
|
Unitedkingdom
|
London
|
Dong Energy
|
5 Howick Place
|
London
|
SW1P 1WG
|
orsted.com
|
2016
|
$1,169,509,636
|
1944
|
Foreign company
|
411
|
FC034367
|
*********@******.***
|
02*****50
|
0334108798
|
50 |
Southern Gas Networks PLC
|
Unitedkingdom
|
Horley
|
St. Lawrence House
|
Station Approach
|
Surrey
|
RH6 9HJ
|
sgn.co.uk
|
2004
|
$1,143,469,011
|
317
|
Corporation
|
30
|
05167021
|
************@***.***
|
01*****20
|
0850247001
|
51 |
Scottish Hydro Electric Transmission PLC
|
Unitedkingdom
|
Buchanty
|
Inveralmond House
|
200 Dunkeld Road
|
Perth and Kinross
|
PH1 3AQ
|
hydro.co.uk
|
2000
|
$1,124,305,435
|
1701
|
Corporation
|
305
|
SC213461
|
************@*****.***
|
|
0752297759
|
52 |
Atlantica Sustainable Infrastructure LIMITED
|
Unitedkingdom
|
Chiswick
|
Building 7, Floor 2, Chiswick Business Park
|
566 Chiswick High Road
|
London
|
W4 5YG
|
atlantishealthcare.com
|
2013
|
$1,099,894,000
|
1304
|
Corporation
|
78
|
08818211
|
*******@****.***
|
02*****09
|
0330912695
|
53 |
So Energy Trading LIMITED
|
Unitedkingdom
|
Chiswick
|
Studio 2 Power Road Studios
|
114 Power Road
|
London
|
W4 5PY
|
so.energy
|
2014
|
$1,089,570,195
|
416
|
Corporation
|
2
|
09263295
|
***********@*****.***
|
03*****50
|
0331548065
|
54 |
Shell Energy UK LIMITED
|
Unitedkingdom
|
Herne Hill
|
Shell Centre
|
York Road
|
London
|
SE1 7NA
|
shell.com
|
2013
|
$1,057,540,269
|
136
|
Corporation
|
6076
|
07489042
|
*****@********.***
|
02*****00
|
0328160011
|
55 |
Sse Generation LIMITED
|
Unitedkingdom
|
Reading
|
No.1 Forbury Place
|
43 Forbury Road
|
Reading
|
RG1 3JH
|
lightsoninsouthampton.co.uk
|
1991
|
$982,672,647
|
683
|
Corporation
|
305
|
02310571
|
*********@*******.***
|
01*****99
|
0611558557
|
56 |
Orlen Lng Trading LIMITED
|
Unitedkingdom
|
London
|
3rd Floor
|
20 Greycoat Place
|
London
|
SW1P 1SB
|
N/A
|
2022
|
$980,670,495
|
21
|
Corporation
|
33
|
14019739
|
*********@****.***
|
02*****77
|
0339929429
|
57 |
Engie Gas LIMITED
|
Unitedkingdom
|
New Wortley
|
No 1 Leeds, 26 Whitehall Road
|
N/A
|
Leeds, West Yorkshire
|
LS12 1BE
|
engie.co.uk
|
1999
|
$979,372,590
|
2
|
Corporation
|
6205
|
03814495
|
******@*****.***
|
03*****80
|
0349335653
|
58 |
Sse Thermal Energy Operations LIMITED
|
Unitedkingdom
|
Reading
|
43 Forbury Road
|
N/A
|
Reading
|
RG1 3JH
|
N/A
|
2020
|
$950,183,406
|
294
|
Corporation
|
305
|
12697902
|
*******@****.***
|
|
0337130406
|
59 |
Eastern Power Networks PLC
|
Unitedkingdom
|
Rotherhithe
|
Newington House
|
237 Southwark Bridge Road
|
London
|
SE1 6NP
|
ukpowernetworksservices.co.uk
|
1989
|
$901,322,632
|
541
|
Corporation
|
56
|
02366906
|
************@*******.***
|
08*****38
|
0343803941
|
60 |
Gas Plus Supply LIMITED
|
Unitedkingdom
|
Mill Hill
|
333 Edgware Road
|
N/A
|
London
|
NW9 6TD
|
N/A
|
2004
|
$898,846,597
|
3
|
Corporation
|
31
|
05199935
|
********@***.***
|
03*****77
|
0850583735
|
61 |
Southern Electric Power Distribution PLC
|
Unitedkingdom
|
Reading
|
No.1 Forbury Place
|
43 Forbury Road
|
Reading
|
RG1 3JH
|
sse.com
|
2000
|
$864,518,413
|
2452
|
Corporation
|
305
|
04094290
|
*******@*****.***
|
08*****01
|
0332041191
|
62 |
Sse Thermal Generation (scotland) LIMITED
|
Unitedkingdom
|
Buchanty
|
Inveralmond House
|
200 Dunkeld Road
|
Perth and Kinross
|
PH1 3AQ
|
sse.com
|
2020
|
$846,370,126
|
74
|
Corporation
|
305
|
SC664055
|
**********@******.***
|
03*****10
|
0337086432
|
63 |
Edf Energy Nuclear Generation Group LIMITED
|
Unitedkingdom
|
Glasgow
|
B D O Llp
|
6 Atlantic Quay, 70 York Street
|
Glasgow City
|
G2 8JX
|
N/A
|
1989
|
$843,724,117
|
66
|
Corporation
|
30997
|
SC270184
|
************@*****.***
|
|
0850264434
|
64 |
Ovo (s) Energy Services LIMITED
|
Unitedkingdom
|
Bristol
|
Temple Quay
|
1 the Square
|
City of Bristol
|
BS1 6DG
|
bristol-energy.co.uk/homepage#page
|
2017
|
$837,049,775
|
7419
|
Corporation
|
22
|
11046212
|
************@********.***
|
03*****49
|
0334583245
|
65 |
Cfp Energy LIMITED
|
Unitedkingdom
|
Saint Helier
|
5th Floor
|
37 Esplanade, St. Helier
|
Saint Helier
|
JE1 2TR
|
N/A
|
2009
|
$827,459,291
|
109
|
Corporation
|
N/A
|
102937
|
******@*******.***
|
01*****17
|
0326693497
|
66 |
Scottishpower Renewables (UK) LIMITED
|
Unitedkingdom
|
Glasgow
|
Scottishpower House
|
320 St Vincent St
|
Glasgow City
|
G2 5AD
|
scottishpowerrenewables.com
|
1994
|
$801,582,349
|
807
|
Corporation
|
2889
|
NI028425
|
**********@*******.***
|
01*****00
|
0343319516
|
67 |
Axpo UK LIMITED
|
Unitedkingdom
|
Moorgate
|
155 Fenchurch Street
|
N/A
|
London
|
EC3M 6AL
|
axpo.com
|
2008
|
$760,617,326
|
34
|
Corporation
|
1647
|
06600942
|
************@******.***
|
02*****70
|
0322357869
|
68 |
Electricity North West LIMITED
|
Unitedkingdom
|
Salford
|
Frederick Road
|
N/A
|
Manchester, Greater Manchester
|
M6 6QH
|
enwl.co.uk
|
1989
|
$759,055,289
|
2103
|
Corporation
|
19
|
02366949
|
******@******.***
|
08*****41
|
0347283536
|
69 |
Orsted Power (UK) LIMITED
|
Unitedkingdom
|
London
|
5 Howick Place
|
N/A
|
London
|
SW1P 1WG
|
orsted.com
|
2003
|
$747,540,725
|
1124
|
Corporation
|
411
|
04984787
|
***********@******.***
|
02*****50
|
0848376602
|
70 |
International Power LTD.
|
Unitedkingdom
|
City of London
|
Floor 4 the Broadgate Tower
|
20 Primrose Street
|
London
|
EC2A 2EW
|
williamblair.com
|
1989
|
$741,048,423
|
145
|
Corporation
|
6205
|
02366963
|
*******@*******.***
|
02*****40
|
0347294343
|
71 |
National Grid Electricity Distribution (west Midlands) PLC
|
Unitedkingdom
|
Saint Philips
|
Avonbank
|
Feeder Road
|
City of Bristol
|
BS2 0TB
|
nationalgrid.co.uk
|
1998
|
$740,018,624
|
2047
|
Corporation
|
2
|
03600574
|
************@********.***
|
01*****00
|
0347143669
|
72 |
Impello LIMITED
|
Unitedkingdom
|
Herne Hill
|
Shell Centre
|
York Road
|
London
|
SE1 7NA
|
N/A
|
2003
|
$733,576,547
|
1137
|
Corporation
|
6076
|
04558469
|
*******@***.***
|
|
0843958034
|
73 |
National Grid Electricity Distribution (east Midlands) PLC
|
Unitedkingdom
|
Kegworth
|
Herald Way Pegasus Business Park
|
N/A
|
Leicestershire
|
DE74 2TU
|
nationalgrid.co.uk
|
1989
|
$726,185,314
|
1989
|
Corporation
|
9
|
02366923
|
*********@******.***
|
|
0343689645
|
74 |
Wales & West Utilities LIMITED
|
Unitedkingdom
|
Lower Machen
|
Wales & West House
|
Spooner Close, Coedkernew
|
Newport
|
NP10 8FZ
|
wwutilities.co.uk
|
2004
|
$715,905,515
|
1915
|
Corporation
|
6
|
05046791
|
*******@********.***
|
08*****99
|
0849012644
|
75 |
Sp Distribution PLC
|
Unitedkingdom
|
Glasgow
|
20 York Street
|
N/A
|
Glasgow City
|
G2 8GT
|
N/A
|
1998
|
$709,096,872
|
782
|
Corporation
|
2889
|
SC189125
|
********@*****.***
|
01*****47
|
0347412593
|
76 |
Opus Energy LIMITED
|
Unitedkingdom
|
Spinney Hill
|
Royal Pavilion
|
2 Summerhouse Road, Moulton Park Industrial Estate
|
Northamptonshire
|
NN3 6BJ
|
opusenergy.co.uk
|
2002
|
$701,367,728
|
606
|
Corporation
|
58
|
04382246
|
*******@********.***
|
08*****77
|
0535056939
|
77 |
Calor Gas LIMITED
|
Unitedkingdom
|
Warwick
|
Athena House
|
Athena Drive, Tachbrook Park
|
Warwickshire
|
CV34 6RL
|
calor.co.uk
|
1935
|
$689,527,842
|
1984
|
Corporation
|
1557
|
00303703
|
********@*******.***
|
08*****26
|
0327397975
|
78 |
Spalding Energy Company, LTD.
|
Unitedkingdom
|
Spalding
|
West Marsh Road
|
N/A
|
Lincolnshire
|
PE11 2BB
|
spaldingenergy.co.uk
|
1996
|
$678,855,866
|
410
|
Foreign company
|
12
|
FC019668
|
********@****.***
|
01*****00
|
0535494780
|
79 |
Ep Langage LIMITED
|
Unitedkingdom
|
London
|
Byron House
|
7-9 St. James'S Street
|
London
|
SW1A 1EE
|
N/A
|
1997
|
$666,040,021
|
40
|
Corporation
|
2685
|
03462783
|
*********@*******.***
|
|
0647687394
|
80 |
Sse Energy Markets LIMITED
|
Unitedkingdom
|
Reading
|
No.1 Forbury Place
|
43 Forbury Road
|
Reading
|
RG1 3JH
|
N/A
|
2015
|
$664,887,253
|
276
|
Corporation
|
305
|
09442646
|
*********@****.***
|
|
0331771543
|
81 |
M Group Water (network Infrastructure) LIMITED
|
Unitedkingdom
|
Stevenage
|
Abel Smith House
|
Gunnels Wood Road
|
Hertfordshire
|
SG1 2ST
|
morrisonrecruit.com
|
1964
|
$660,828,636
|
2111
|
Corporation
|
92
|
04530602
|
*********@*******.***
|
01*****44
|
0843679794
|
82 |
Ep Lynemouth Power LIMITED
|
Unitedkingdom
|
Ashington
|
Woodhorn Village
|
N/A
|
Northumberland
|
NE63 9NW
|
lynemouthpower.com
|
2011
|
$659,183,382
|
158
|
Corporation
|
2685
|
07866585
|
******@****.***
|
01*****00
|
0328688251
|
83 |
Northern Powergrid (yorkshire) PLC
|
Unitedkingdom
|
Newcastle Upon Tyne
|
Lloyds Court
|
78 Grey Street
|
Newcastle Upon Tyne, Tyne and Wear
|
NE1 6AF
|
northernpowergrid.com
|
2000
|
$652,664,527
|
1163
|
Corporation
|
8649
|
04112320
|
**********@******.***
|
08*****77
|
0752233070
|
84 |
Sp Transmission PLC
|
Unitedkingdom
|
Glasgow
|
320
|
St Vincent Street
|
Glasgow City
|
G2 5AD
|
spenergynetworks.co.uk
|
1998
|
$646,027,261
|
518
|
Corporation
|
2889
|
SC189126
|
*******@***.***
|
01*****08
|
0347412601
|
85 |
Smartestenergy LIMITED
|
Unitedkingdom
|
Stepney
|
The Columbus Building 7 Westferry Circus
|
N/A
|
London
|
E14 4HD
|
smartestenergy.com
|
2000
|
$634,730,637
|
667
|
Corporation
|
2229
|
03994598
|
*****@******.***
|
08*****22
|
0630988723
|
86 |
Sp Manweb PLC
|
Unitedkingdom
|
Prenton
|
3 Prenton Way
|
North Cheshire Trading Estate
|
Wirral, Merseyside
|
CH43 3ET
|
spenergynetworks.com/contact/default.asp
|
1989
|
$628,078,597
|
857
|
Corporation
|
2889
|
02366937
|
********@***.***
|
08*****44
|
0347282231
|
87 |
East Anglia One LIMITED
|
Unitedkingdom
|
City of London
|
3 Level
|
1 Tudor Street
|
London
|
EC4Y 0AH
|
N/A
|
2010
|
$626,956,805
|
4
|
Corporation
|
2889
|
07366753
|
******@******.***
|
01*****00
|
0328001244
|
88 |
First Hydro Company
|
Unitedkingdom
|
Caernarfon
|
Dinorwig Power Station
|
Llanberis
|
Gwynedd
|
LL55 4TY
|
fhc.co.uk
|
1989
|
$624,011,479
|
223
|
Corporation
|
6205
|
02444277
|
********@********.***
|
01*****66
|
0615762831
|
89 |
London Power Networks PLC
|
Unitedkingdom
|
Rotherhithe
|
Newington House
|
237 Southwark Bridge Road
|
London
|
SE1 6NP
|
ukpowernetworks.co.uk
|
2000
|
$616,026,479
|
62
|
Corporation
|
56
|
03929195
|
*******@********.***
|
08*****38
|
0350506444
|
90 |
South Eastern Power Networks PLC
|
Unitedkingdom
|
Rotherhithe
|
Newington House
|
237 Southwark Bridge Road
|
London
|
SE1 6NP
|
ukpowernetworksservices.co.uk
|
1995
|
$608,538,725
|
13
|
Corporation
|
56
|
03043097
|
**********@****.***
|
08*****38
|
0890416337
|
91 |
Eleclink LIMITED
|
Unitedkingdom
|
Marylebone
|
Kingdom Street
|
N/A
|
London
|
W2 6BD
|
eleclink.co.uk
|
2011
|
$606,266,771
|
143
|
Corporation
|
53
|
07595420
|
******@***.***
|
02*****85
|
0328330713
|
92 |
Medway Power LIMITED
|
Unitedkingdom
|
Reading
|
43 Forbury Road
|
N/A
|
Reading
|
RG1 3JH
|
N/A
|
1990
|
$597,878,192
|
45
|
Corporation
|
305
|
02537903
|
************@******.***
|
|
0873116316
|
93 |
Cedar Energy And Infrastructure LIMITED
|
Unitedkingdom
|
Moorgate
|
33 Holborn
|
N/A
|
London
|
EC1N 2HT
|
N/A
|
2019
|
$593,992,748
|
294
|
Corporation
|
287
|
12203483
|
***********@***.***
|
|
0336462207
|
94 |
Ecotricity LIMITED
|
Unitedkingdom
|
Stroud
|
Lion House
|
Rowcroft
|
Gloucestershire
|
GL5 3BY
|
ecotricity.co.uk
|
1995
|
$577,962,986
|
383
|
Corporation
|
84
|
03043412
|
********@****.***
|
01*****11
|
0890419315
|
95 |
Northern Ireland Electricity Networks LIMITED
|
Unitedkingdom
|
Malone Upper
|
P O Box 2
|
120 Malone Road
|
Belfast
|
BT9 5HT
|
nienetworks.co.uk
|
1991
|
$573,119,032
|
1578
|
Corporation
|
998
|
NI026041
|
*********@******.***
|
03*****43
|
0340363964
|
96 |
Seagreen Holdco 1 LIMITED
|
Unitedkingdom
|
Reading
|
No.1 Forbury Place
|
43 Forbury Road
|
Reading
|
RG1 3JH
|
N/A
|
2010
|
$570,338,483
|
300
|
Corporation
|
5613
|
07294645
|
************@********.***
|
03*****30
|
0327895625
|
97 |
Seagreen Wind Energy LIMITED
|
Unitedkingdom
|
Reading
|
43 Forbury Road
|
N/A
|
Reading
|
RG1 3JH
|
N/A
|
2009
|
$570,211,572
|
347
|
Corporation
|
5613
|
06873902
|
*****@****.***
|
|
0322715680
|
98 |
Yu Energy Retail LIMITED
|
Unitedkingdom
|
Thorneywood
|
Cpk House
|
2 Horizon Place, Nottingham Busi
|
Nottingham
|
NG8 6PY
|
yuenergy.co.uk
|
2012
|
$569,761,642
|
223
|
Corporation
|
8
|
08246810
|
***********@*****.***
|
01*****58
|
0329741040
|
99 |
Smartestenergy Business LIMITED
|
Unitedkingdom
|
Worthing
|
Ridgeworth House
|
5-9 Liverpool Gardens
|
West Sussex
|
BN11 1RY
|
smartestenergy.com/business
|
2008
|
$548,648,296
|
146
|
Corporation
|
2229
|
06468946
|
********@****.***
|
01*****00
|
0322151587
|
100 |
Scottishpower Renewable Energy LIMITED
|
Unitedkingdom
|
Cathcart
|
Cathcart Business Park
|
Spean Street
|
Glasgow City
|
G44 4BE
|
N/A
|
2007
|
$546,353,285
|
42
|
Corporation
|
2889
|
SC326127
|
******@*******.***
|
01*****80
|
0321148789
|