The six UK DNOs
| DNO | Region |
|---|---|
| UK Power Networks (UKPN) | London, South East, East |
| Northern Powergrid (NPG) | North East, Yorkshire |
| SP Energy Networks (SPEN) | Central Scotland, Merseyside, Cheshire, North Wales |
| Electricity North West (ENWL) | North West England |
| National Grid Electricity Distribution (NGED, formerly WPD) | Midlands, South West, South Wales |
| Scottish and Southern Electricity Networks (SSEN) | North Scotland, Southern England |
[!TIP] Use our DNO coverage map to type in any postcode and get the answer instantly.
Why it matters
Each DNO has:
- Different application portals
- Different pricing (some charge for G99 applications, some don't)
- Different typical timelines
- Different technical preferences (inverter brands, export limit rules)
Independent DNOs (IDNOs)
Some new-build sites are on IDNO networks (Energetics, GTC, ESP, etc.) rather than the main six. They typically follow the same G99 rules but application processes can vary.
[!INFO] If in doubt, send us the MPAN and postcode. Digits 14 and 15 of the MPAN tell us the DNO region.
Cross-region jobs
Rare but possible: for very large customers with sites in multiple DNO regions, you'd need one application per region. Each is treated independently.