Solar Panels on Shed Roof Builds: Planning, Fixings and Sizing
Putting solar panels on shed roof structures is the most common way to get power into a garden building without trenching a mains cable. This page sets out the English planning limits as they stand after the 27 August 2026 changes, how pitched, pent and flat shed roofs take panels, and how to size the array. Solar Panels for Sheds is an independent UK guide operated by SEO Dons Ltd: we do not sell or install kits, and if you send us your plans, we reply by email.
In short: in England, panels on the roof of a shed in a house garden are usually permitted development if they sit no more than 0.2 m proud of a pitched roof and below the ridge, or no more than 0.6 m above a flat roof. A listed house, a scheduled monument or a flat roof on protected land changes that. Fix rails through to the rafters, not into the felt, and size the array from your load list.
Can I put solar panels on my shed roof?
In most of England, yes, without a planning application. The permitted development rules for solar (Class A of Part 14 of the General Permitted Development Order) cover the installation of solar PV or solar thermal equipment on a house and on "a building situated within the curtilage of a dwellinghouse". A garden shed, a workshop, a summer house or a garden office in the grounds of your house is exactly that kind of building, so the same limits apply to its roof as to the roof of the house.
Three things take a shed outside permitted development. If the house is a listed building, solar on any building in its curtilage is no longer permitted development: that exclusion took effect on 27 August 2026, so advice written before then may be wrong. A site designated as a scheduled monument is excluded too. And the rules for the grounds of a block of flats are different from those for a house, so a shared or communal garden needs its own check.
Everything on this page is the rule for England. Wales, Scotland and Northern Ireland have their own permitted development orders with different details; if you live there, ask your council before you buy.
Planning permission for solar panels on a shed: the limits
The limits depend on where the panels go. They are measured from the roof or wall surface, so the mounting rails count as well as the panels.
| Where the panels go | The limit | Rule |
|---|---|---|
| Pitched shed roof | No more than 0.2 m beyond the roof slope, and no higher than the highest part of the roof (excluding any chimney) | Class A, A.1(2)(c) |
| Flat shed roof | Highest part no more than 0.6 m above the highest part of the roof (excluding any chimney) | Class A, A.1(2)(d) |
| Flat roof on protected land | Conservation area, National Park, National Landscape, World Heritage Site or the Broads: a prior-approval decision from the council comes first | Class A, A.2 (article 2(3) land) |
| Shed wall (not on a highway) | No more than 0.4 m beyond the plane of the wall | Class A, A.1(2)(a)(ii) |
| Shed wall that abuts a highway | No more than 0.2 m beyond the plane of the wall; not permitted at all on a wall fronting a highway in a conservation area or World Heritage Site | Class A, A.1(2)(a)(i) and (e) |
| House is listed | Not permitted development on a building in its curtilage (from 27 August 2026): planning permission and listed building consent | Class A, A.1(2)(g) |
| Plug-in solar | Not permitted on a wooden wall or enclosure, or on any part of the exterior clad in timber | Class A, A.1(2)(h) |
Two conditions run alongside these limits: the panels should be sited, so far as practicable, to minimise their effect on the appearance of the building and the amenity of the area, and they should be removed as soon as reasonably practicable once they are no longer needed. Some estates and conservation areas also have Article 4 Directions that remove permitted development rights, so the council check is worth the five minutes even when the table says yes.
Ground-mounted panels beside the shed are a different rule set (Class B, stand-alone solar), covered by our sister guide to garden solar. This page deals with the shed roof and walls only.
Pitched, pent, apex and flat shed roofs
Pent roofs (a single slope) are the easiest: if the slope faces south, south-east or south-west, panels can sit on rails parallel to the felt, well inside the 0.2 m limit. If the slope faces north, a pent roof is a poor home for panels, and a wall mount or the opposite face of the garden may do better.
Apex roofs give you two slopes; on an east-west shed you can split a small array across both faces to spread output through the day, at the cost of a lower midday peak. Keep the top of the panels below the ridge: the rule is that nothing may sit higher than the highest part of the roof.
Flat roofs (most felt-and-OSB garden offices and many garages) allow the panels to be tilted up to 0.6 m above the roof. The common low-profile tilt of about 10 degrees yields a few per cent less than the ideal angle, roughly 4-6% by industry guidance, and in exchange keeps wind load and visual impact down. On protected land a flat-roof array needs the council's prior-approval decision before work starts, which is not the same as full planning permission but is still a decision you must wait for.
Fixings and roof load
The weak point on most sheds is not the panel but the roof under it. A felt roof over thin sheathing will not hold a screw in tension, so rails are fixed through the deck into the rafters or purlins, with every penetration sealed. If the felt is near the end of its life, re-felt before the panels go on: lifting an array to repair a roof later costs more than doing both once.
Flat-roof frames on houses are often held down by ballast instead of fixings. On a shed that is usually the wrong answer: ballasted systems typically add around 40-70 kg per m² of roof load once panels, frames and ballast are counted, and the exact ballast is a site calculation signed off against the roof's structural capacity. Most garden buildings are not designed for that, so shed systems use mechanical fixings into the structure. If you are unsure what your roof can carry, have it checked before you order anything.
Getting the power inside, and the wiring rules
The cable route from the roof into the shed is part of the planning picture (keep it tidy and weather-sealed) and part of the electrical picture. A self-contained low-voltage system (panel, charge controller, battery and DC loads in the shed) is a very different job from connecting the shed to the house supply. Where Part P of the Building Regulations draws the line, and what you can do yourself, is set out on our shed solar wiring and Part P page.
If the array will feed the house or export to the grid, the network rules apply. A system of up to 16 A per phase (3.68 kW on a single-phase supply) is connected under G98, which means the installer notifies the network operator within 28 days; anything larger needs a G99 application and approval before connection, and batteries that can export count towards the limit. A shed array is almost always in G98 territory.
Sizing the array for the roof you have
Size from what you want to run, then check it fits the roof, not the other way round. A lights-and-charging shed needs far less than a garden office with a laptop and a heater, and December output is the figure that decides whether a winter-use shed works. Our worked examples on how many solar panels it takes to run a shed go from load list to panel count, and the shed solar panel kit tiers show what each size runs. If the roof is small or shaded, a higher-wattage panel or a second face of an apex roof is usually cheaper than fighting the shade.
VAT and cost on a shed roof
Installed solar panels and battery storage are zero-rated for VAT in Great Britain until 31 March 2027, reverting to 5% from 1 April 2027. Parts you buy to fit yourself carry the standard 20%. If the job also needs the shed re-roofed, the roofing element is charged at the standard rate while the solar element is zero-rated, so ask for a quote that splits the two. Tier-by-tier prices for kits and installed systems are on our shed solar costs page.
Questions about shed roof solar
Can I put solar panels on my shed roof?
In most English gardens, yes. Permitted development for solar covers a building within the curtilage of a house, which includes a garden shed. On a pitched roof the panels must protrude no more than 0.2 m from the slope and stay below the ridge; on a flat roof they may rise up to 0.6 m. The exceptions are a listed house, a scheduled monument, and a flat-roof array on protected land, which needs the council's prior-approval decision first.
Do I need planning permission for solar panels on a shed?
Usually not in England, because shed-roof solar is permitted development within the limits above. You do need planning permission (and listed building consent) if the house is listed, and a prior-approval decision before a flat-roof array in a conservation area, National Park, National Landscape, World Heritage Site or the Broads. Wales, Scotland and Northern Ireland have their own rules; check with your council before buying.
Can I fix a plug-in solar panel to a timber shed wall?
Not under permitted development. Since 27 August 2026 the rules exclude plug-in solar where any part would be installed on a wooden wall or enclosure, or on any part of the exterior that is clad in timber. Mount it on the roof within the roof limits, or ask the council.
Will my shed roof take the weight of solar panels?
A sound pitched roof usually takes a small array fixed through to the rafters, but the roof deck and felt must be in good order first. Flat roofs are where weight matters: ballasted frames typically add around 40-70 kg per m², which most sheds are not built for, so shed systems use mechanical fixings instead. If in doubt, have the structure checked before you buy.
Is VAT charged on solar panels for a shed?
Installed solar (and battery storage) is zero-rated for VAT in Great Britain until 31 March 2027, then 5% from 1 April 2027. Parts you buy to fit yourself carry 20%, and so does any roofing work: the roofing element is charged at the standard rate while the solar element is zero-rated, so ask for a quote that splits them.
Sources and last checked
Permitted development: The Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2, Part 14, Class A, as amended by S.I. 2023/1279 and S.I. 2026/896, read on legislation.gov.uk on 19 October 2026. Flat-roof prior approval: Class A, A.2, article 2(3) land. VAT: HMRC VAT Notice 708/6, checked 18 October 2026. Grid connection: ENA EREC G98/G99 as summarised by the network operators, checked 18 October 2026. Flat-roof tilt and ballast figures are indicative industry guidance, checked 18 October 2026.
Send your roof and load list
Tell us the roof type (pent, apex or flat), which way it faces, rough dimensions and what you want to run. We reply by email with a sized spec and the planning points to check.