What is DNO (Distribution Network Operator)?
The company that operates your local electricity distribution grid and manages solar grid connections in the UK.
Quick Answer
To connect a solar PV system to the UK grid, your MCS-certified installer submits a G98 notification (for systems up to 3.68kW single phase) to your local DNO on your behalf. The DNO then issues approval. Processing times are typically 2–4 weeks. There is no charge for standard G98 notifications.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
DNO (Distribution Network Operator) Explained
A DNO (Distribution Network Operator) is a company responsible for building, maintaining, and operating the electricity distribution network in a specific region of the UK. There are six DNOs covering different areas: UK Power Networks, Western Power Distribution (now National Grid), Northern Powergrid, Scottish Power Energy Networks, Scottish and Southern Electricity Networks, and Electricity North West. For solar PV homeowners, the DNO handles grid connection notifications (G98/G99) and ensures safe connection of solar systems to the grid.
How Does DNO (Distribution Network Operator) Work in the UK?
To connect a solar PV system to the UK grid, your MCS-certified installer submits a G98 notification (for systems up to 3.68kW single phase) to your local DNO on your behalf. The DNO then issues approval. Processing times are typically 2–4 weeks. There is no charge for standard G98 notifications.
Frequently Asked Questions
Do I need DNO approval for solar panels?
Yes. Your MCS-certified installer submits a G98 notification to your local DNO before or after installation. This is required for grid-connected systems so your exported electricity is safely managed.
Related Guides
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.