DNO
Distribution Network Operator
Network OperatorsThe regional monopoly company responsible for maintaining and operating the local electricity cables, substations, and equipment that deliver power to your premises.
Great Britain has 14 DNO regions, each operated by a licensed company responsible for everything from the high-voltage cables leaving substations to the service cable entering your building. Unlike energy suppliers (who you can choose and switch), your DNO is determined by your location - you cannot change them.
The 14 DNOs by parent company:
| Operator | DNOs | Coverage |
|---|---|---|
| UKPN | Eastern (10), London (12), South Eastern (19) | London and South East |
| NGED | East Midlands (11), West Midlands (14), South Wales (21), South West (22) | Midlands and South West |
| NPg | Northern Powergrid NE (15), Yorkshire (23) | North East England |
| ENWL | Electricity North West (16) | Greater Manchester, Lancashire |
| SSEN | Scottish Hydro (17), Southern Electric (20) | Scottish Highlands, Southern England |
| SPEN | SP Manweb (13), SP Distribution (18) | Merseyside, North Wales, Central Scotland |
Your DNO is responsible for maintaining power quality, responding to outages (call 105 for power cuts), and connecting new supplies.
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