What Are The Planning Rules For Commercial Solar PV In The UK?
If you’re planning to install solar panels on a commercial building in the UK, one of the first questions that often comes up is whether you need planning permission.
The good news? In most cases, you don’t. But there are some important conditions and exceptions to be aware of. This guide outlines the current UK planning rules for commercial solar PV — and explains what’s required to stay compliant.
Rooftop Solar Is Usually Permitted Development
For most commercial properties, rooftop solar PV systems fall under Permitted Development Rights, meaning no full planning application is needed — as long as the installation meets specific criteria.
Your system is likely permitted if:
It does not project more than 200mm from the roof surface
It is not higher than the highest part of the roof (excluding chimneys)
It is not on a listed building or in a protected heritage setting
It is not installed in a conservation area (if visible from a public road)
These rules apply to typical commercial, industrial, and agricultural buildings.
When Planning Permission May Be Required
There are some exceptions where a full planning application may be necessary:
Ground-mounted solar PV systems on commercial land
Properties within National Parks, Areas of Outstanding Natural Beauty (AONBs), or conservation areas
Installations on or near listed buildings
Any system that would significantly alter the building’s external appearance
If your project falls into any of these categories, it’s essential to consult your local planning authority early in the process.
Notification Is Still Required
Even if your project qualifies as permitted development, you must still notify your local authority before starting work.
This is a formal notification under Part 14 of the General Permitted Development Order (GPDO) and helps ensure compliance is recorded correctly. It’s not a full planning application, but it is a required step.
At Solarcrown Commercial, we manage this notification on behalf of our clients as part of our project delivery process.
Don’t Confuse Planning with Grid Connection (G99)
Another common area of confusion is the difference between planning permission and grid connection approval.
Every commercial solar installation needs to go through the G99 application process with the local Distribution Network Operator (DNO) — regardless of planning status. G99 governs how your system connects to the grid and is entirely separate from the planning process.
In Summary
Most rooftop commercial solar projects do not need full planning permission
Always check if the site is in a conservation area or has other restrictions
Submit a Part 14 notification before works begin
Apply for G99 grid approval separately via your DNO
Work with a solar partner who understands the full process
At Solarcrown Commercial, we handle planning checks, notifications, and grid approvals as part of our end-to-end solar PV service. If you’re unsure about your site, we’re happy to advise.