Distribution Network Operator - History

History

In 1990, the Area Boards were replaced by regional electricity companies, which were then privatised. The distribution network operators are the successors to the distribution arms of the regional electricity companies. The distribution network operators have a Trade Association called the Energy Networks Association

As of November 2008, seven company groups hold the fourteen distribution licences:

DNOs
Area ID Area Company
10 East England UK Power Networks
11 East Midlands Western Power Distribution
12 London UK Power Networks
13 North Wales, Merseyside and Cheshire Scottish Power Energy Networks
14 West Midlands Western Power Distribution
15 North East England Northern Power Grid
16 North West England Electricity North West
17 North Scotland Scottish Hydro Electric Power Distribution
18 South Scotland Scottish Power Energy Networks
19 South East England UK Power Networks
20 Southern England Southern Electric Power Distribution
21 South Wales Western Power Distribution
22 South West England Western Power Distribution
23 Yorkshire Northern Power Grid

In addition to the distribution network operators noted above who are licensed for a specific geographic area there are also independent distribution network operators (IDNO). IDNOs own and operate electricity distribution networks which will predominately be network extensions connected to the existing distribution network, e.g. to serve new housing developments. Scottish Hydro Electric Power Distribution also provide distribution services in South Scotland as an IDNO and Southern Electric Power Distribution provide IDNO services in all other England and Wales areas.1 The IDNOs have no geographically defined "base" area:

IDNOs
ID Name Licensee MPAS Operator ID
24 Envoy Independent Power Networks IPNL
25 ESP Electricity ESP Electricity LENG
26 Energetics Global Utilities Connections (Electric) Ltd GUCL
27 GTC The Electricity Network Company Ltd ETCL
28 EDF IDNO UK Power Networks (IDNO) Ltd EDFI

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