Understanding DNO vs iDNO Electrical Connections for Street Lighting
When it comes to powering street lighting installations, choosing between a DNO (Distribution Network Operator) and an iDNO (Independent Distribution Network Operator) connection can have a significant impact on cost, delivery, and long-term maintenance.
Here’s a quick breakdown:
What Are They?
DNOs are the established regional operators licensed to distribute electricity.
iDNOs are newer, independent companies licensed to build and operate electricity networks, typically connected to a DNO’s network.
Advantages of a DNO Connection:
• Strong existing infrastructure and established presence.
• Fewer stakeholders – direct connection with the regional provider.
• Perceived as simpler for asset adoption and maintenance.
Disadvantages of a DNO Connection:
• Can be slower to respond or less flexible on installation timescales.
• Costs may be higher, especially for non-contestable works.
• Less competitive pricing due to monopoly in their region.
Advantages of an iDNO Connection:
• Often more competitive pricing and commercial terms.
• Faster installation and connection times in many cases.
• Increasingly accepted by local authorities/developers for lighting.
Disadvantages of an iDNO Connection:
• May involve multiple parties (installer + iDNO + DNO).
• Not all local authorities are comfortable adopting iDNOs assets
• Long-term operation + maintenance responsibilities must be defined.
The right choice depends on your project’s size, location, and urgency.
As iDNOs become more integrated into the UK’s energy ecosystem, they’re offering a real alternative—especially where flexibility and cost-efficiency are key. However, ensuring clarity on asset adoption and compliance with local standards remains crucial.
Have you used an iDNO for street lighting connections? We’d love to hear your experiences in the comments.
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At MMA Lighting Consultancy Ltd we produce a variety of Street Lighting Designs, on sites that can be located anywhere across the county. These jobs can be for large developer companies, civil engineering companies of for planning architects. If you are need of assistance with a street lighting design please feel free to get in touch and we will lead you through the process.
Email: info@mma-consultancy.co.uk
Telephone: 0118 321 5636
