Independent Distribution Network Operators own and operate private electricity networks, typically in new housing developments, connecting to the main DNO network.
An Independent Distribution Network Operator (iDNO) is a company that owns and operates electricity distribution networks independently of the regional DNOs. They typically build and manage networks in new developments.
| Aspect | DNO | iDNO |
|---|---|---|
| Coverage | Regional monopoly | Specific developments |
| Ownership | Large utilities | Independent companies |
| Connection | Direct to grid | Via host DNO |
| Regulation | Ofgem licensed | Ofgem licensed |
Property developers use iDNOs because they:
For solar installers, iDNO properties require:
If you're unsure whether a property is on an iDNO network:
Distribution Network Operators own and operate the local electricity distribution networks that deliver power from the national grid to homes and businesses.
The MPAN is a 21-digit reference identifying electricity supply points in Great Britain, with a 13-digit core used for billing, switching, and industry communications.
G99 is the engineering recommendation governing the connection of generation equipment to distribution networks, requiring DNO approval for systems over 16A per phase.
Safe Isolation Provider accreditation enables Metering Equipment Managers to legally de-energise and re-energise electricity supplies without DNO appointments.