Commercial Solar Planning Permission in Scotland

Quick answer

In Scotland, most rooftop solar on business premises needs no planning application. Since 24 May 2024 it has been permitted development with no kilowatt cap, under Class 6J of the Scottish Government's non-domestic permitted development rights, provided no part of the installation protrudes more than 1 metre from the building. The exceptions that catch businesses out are listed buildings, World Heritage Sites, National Scenic Areas, sites within 3 km of an aerodrome, and front or road-facing elevations in conservation areas. Ground-mounted panels beyond 12 m² need permission.

What changed on 24 May 2024

Until then, permitted development for rooftop solar in Scotland stopped at 50 kW — so a large warehouse or factory array needed a full planning application, with the cost and months of delay that brings. The Scottish Government removed that cap for domestic and non-domestic buildings, and set out the conditions for business premises in Planning Circular 2/2024. For most commercial roofs, planning has gone from the longest step in a project to a desk check.

The Class 6J conditions, one by one

The 1 metre rule

No part of the panels or associated equipment may protrude more than 1 metre from the surface of the building. Framed systems on a flat roof are the design to watch: tilting modules up for a better angle adds height, so the mounting design has to be checked against the limit before it is priced.

Conservation areas

Panels are allowed on a building in a conservation area, but not on its front elevation or a side elevation facing a road. Many town-centre premises in Scotland sit in conservation areas, so check the designation before assuming the street-facing side of a roof is available.

Listed buildings

Class 6J does not apply to a listed building or anything within its curtilage. Solar on a listed building needs planning permission and, separately, listed building consent — two applications, not one.

Within 3 km of an aerodrome

The right does not apply to sites within 3 km of an aerodrome. That covers more business premises than most people expect, because many airports and airfields sit close to industrial and commercial land. If yours is close to one, allow time for a planning application from the start rather than discovering it after design.

World Heritage Sites and National Scenic Areas

Permitted development does not apply in World Heritage Sites or National Scenic Areas. In the Central Belt the World Heritage Sites include the Old and New Towns of Edinburgh, New Lanark, the Forth Bridge and the Antonine Wall — so a business in Edinburgh city centre, for example, should expect to apply.

Ground-mounted arrays and canopies

Free-standing panels within a business's curtilage are permitted development only up to 12 m² in total (Class 6N), which rules out any ground-mounted array of real size. Solar canopies over parking are covered by separate provisions in the same circular, so check them separately rather than assuming the rooftop rules carry over.

Planning is not the only consent

• Listed building consent is separate from planning permission, as above.
• Your network operator has to approve the connection. Central and southern Scotland is SP Energy Networks' area and the north is SSEN's; almost every commercial array exports more than the 16 A per phase that a G98 notification allows, so it needs a G99 application before connection.
• Your landlord, if you lease the building — permitted development says nothing about who owns the roof.
• Your roof. A structural check is essential whatever the planning position: permitted development does not mean a roof can carry the load.

A quick self-check before you ask for quotes

If every answer is no, a rooftop array on business premises is very likely permitted development. We still confirm it for each site before design, because designations are checked against maps, not memory.

How we handle it

Before anything is designed, Ecoaim checks the site against each Class 6J condition and your network operator's area, and tells you in writing whether an application is needed. If it is, it runs alongside the G99 so neither holds up the other. Our commercial solar panel installers page sets out the full process from feasibility to handover, including the grid, tax and VAT position for Scottish businesses.