# The Electricity (Standards of Performance) Regulations 2005, Part III


This sets out, for each designated electricity distributor, eight and thirteen times the mean daily faults at distribution higher voltage, the category 3 threshold number of customers and the upper threshold number of customers.
(1)
(2)
(3)
(4)
(5)
Designated electricity distributor
Eight times the mean daily faults at distribution higher voltage
Thirteen times the mean daily faults at distribution higher voltage
Category 3 threshold number of customers
Upper threshold number of customers
Central Networks West plc
63
103
348,000
597,000
Central Networks East plc
58
95
410,000
703,000
United Utilities Electricity plc
47
77
262,000
449,000
Northern Electric Distribution Limited
36
59
218,000
374,000
Yorkshire Electricity Distribution plc
35
57
347,000
595,000
Western Power Distribution (South West) plc
54
88
270,000
463,000
Western Power Distribution (South Wales) plc
46
73
208,000
357,000
EDF Energy Networks (LPN) plc
10
17
331,000
567,000
EDF Energy Networks (SPN) plc
46
74
284,000
487,000
EDF Energy Networks (EPN) plc
72
117
484,000
830,000
SP Distribution Limited
79
129
226,000
387,000
SP Manweb plc
61
99
188,000
322,000
Scottish Hydro-Electric Power Distribution Limited
61
99
119,000
204,000
Southern Electric Power Distribution plc
62
101
417,000
715,000

---
Source: https://www.legislation.gov.uk/uksi/2005/1019/schedule/1/part/III (the official version)
Page: https://openlegislation.uk/electricity-standards-of-performance-regulations-2005/schedule-1/part-III
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.