Can You Install Solar Panels On A Conservatory Roof?

In most cases, you cannot install solar panels directly on a conservatory roof, and any MCS-accredited installer worth their reputation will be upfront about this from the start. The majority of conservatory roofs, whether polycarbonate, glass, or a lightweight tiled system, are not structurally designed to carry the additional weight of solar panels and their mounting hardware. 

That said, the picture is not entirely straightforward, and there are specific conservatory roof types and alternative approaches that can still open the door to solar for your home. This guide covers everything you need to know before making any decisions.

Can You Put Solar Panels on a Conservatory Roof?

Putting solar panels on a conservatory roof is not recommended in the vast majority of cases, and here is why. Standard conservatory roofs are constructed to carry their own weight and to withstand normal weather loads such as snow and wind, but they are not engineered to support the dead load of a solar panel array, which typically adds 15 to 25 kilograms per square metre. 

Polycarbonate and glass conservatory roofs in particular are not structural surfaces and provide no meaningful fixing point for solar mounting hardware. Drilling into a polycarbonate or glass panel to fit a mounting bracket would compromise the weatherproofing, likely crack or shatter the panel, and create a serious safety hazard.

The situation is slightly different for solid tiled conservatory roofs, which have become increasingly popular as conservatory upgrades over the past decade. These roofs use a lightweight structural frame overlaid with slim interlocking tiles and a plasterboard ceiling beneath. 

While they look more like a conventional roof than a polycarbonate one, they are still built to a lower structural specification than a full house roof, and the tile fixing battens are typically too light to support standard roof hook fixings under load. 

Some specialist installers have developed low-weight mounting systems designed for solid conservatory roofs, but this is a niche area that requires a detailed structural assessment before any commitment is made.

The bottom line is that if you are thinking about going solar and you have a conservatory, the conservatory roof is almost certainly not the right place to put the panels. The good news is that there are almost always better options elsewhere on or around your property.

Pros and Cons of Solar Panels on a Conservatory Roof

Here is an honest summary of the key considerations for anyone thinking about a conservatory roof solar installation:

Pros:

• A solid tiled conservatory roof with appropriate structural reinforcement may be able to support a small, lightweight solar system in some cases
• A south facing conservatory roof is often well-oriented and receives excellent direct sunlight throughout the day
• Exploring a conservatory roof installation prompts a broader survey of all available surfaces, which often uncovers better alternative mounting locations
• Modern low-weight solar panel options are gradually expanding the range of roof types that can be considered

Cons:

• Polycarbonate and glass conservatory roofs cannot support the load or provide fixing points for solar panels under any circumstances
• Standard solid tiled conservatory roofs are typically not built to the structural specification required for conventional solar mounting
• Drilling or loading a polycarbonate or glass roof risks cracking, shattering, and loss of weatherproofing
• Most MCS-accredited installers will decline to install on a conservatory roof without a formal structural engineer’s sign-off
• Any damage to the conservatory roof caused during a poorly planned installation is costly and complex to repair
• The conservatory roof’s glass or polycarbonate panels may already be under load from snow and wind, leaving little margin for additional permanent weight

What Factors to Consider Before Installing Solar Panels on a Conservatory Roof?

Before drawing any conclusions about your conservatory roof and solar installation, there are several important factors that need careful assessment. Working through these with a qualified installer will give you a clear picture of what is and is not possible for your specific property.

Conservatory Roof Type and Material

The material and construction of your conservatory roof is the single most important factor in determining whether solar installation is feasible. Polycarbonate sheets, which are the most common conservatory roof material on older and budget conservatories, are simply not suitable for solar installation under any circumstances. 

Glass conservatory roofs present the same fundamental problem. Solid tiled conservatory roofs, sometimes marketed as warm roofs or insulated conservatory roofs, sit in a different category and may be worth discussing with a structural engineer, though they still require careful assessment. 

If you are unsure what type of roof your conservatory has, a qualified installer will identify this during an initial survey. EE Renewables offers free site surveys.

Structural Capacity of the Conservatory Frame

Even if your conservatory has a solid roof rather than glass or polycarbonate, the underlying structural frame is the next critical consideration. Most conservatory frames are constructed from uPVC, aluminium, or timber and are designed to carry their own roof weight plus standard weather loads. 

They are not typically engineered with a solar installation in mind. Before any solar work could proceed on a solid conservatory roof, a structural engineer would need to assess the frame, the wall fixings, and the foundation to confirm that the combined load of the roof and the solar system falls within safe limits. 

This assessment adds cost and complexity and in many cases will conclude that reinforcement or alternative solutions are more appropriate.

Roof Orientation and Shading

If your conservatory roof happens to face south and is in open sunlight, it is understandable that you would look at it as a potential solar installation surface. However, even a perfectly oriented conservatory roof is of limited value if it cannot safely carry the panels. 

The orientation question becomes more relevant when considering alternative mounting locations on the same property, as a south facing rear conservatory often means the main house roof above it also faces south, which is typically a far more suitable surface.

Planning Permission and Building Regulations

Solar panel installations on conservatory roofs sit in a grey area from a planning and building regulations perspective. Standard permitted development rights for solar apply to dwellings and their roofs, and a conservatory is generally treated as part of the dwelling for planning purposes. 

However, because conservatory roofs are not conventional structural roof surfaces, any installation that a structural engineer has assessed and approved may also need to be notified to building control to confirm compliance with structural safety requirements. An experienced installer will navigate these considerations and advise you on any notifications or approvals required for your specific property.

Alternative Solar Installation Options on the Property

Before spending time and money investigating a conservatory roof installation, a thorough survey of all other available surfaces on the property is essential. The main house roof, a garage roof, a flat-roofed extension, or garden space for a ground-mounted array are all options that should be assessed and compared. 

In the majority of cases, one or more of these alternatives will offer a structurally sound, well-oriented, and financially superior installation surface compared to the conservatory roof. A good installer will present all available options clearly and help you make the best decision for your home.

Can a Conservatory Roof Be Replaced to Make It Solar Ready?

A conservatory roof can be replaced specifically to make it solar-ready, and this is a route that some homeowners in Southern England, Greater London, the South West, and South Wales are choosing as part of a broader conservatory upgrade project.

Replacing a polycarbonate or glass conservatory roof with a purpose-designed solid roof system built to a higher structural specification than a standard warm roof upgrade opens the possibility of a future solar installation. 

Some specialist conservatory roofing companies now offer solar-ready solid roofing systems that incorporate stronger rafter sections, heavier batten specifications, and pre-formed cable routing channels specifically to accommodate a future solar installation.

If you are already planning a conservatory roof upgrade and are interested in solar, it is worth raising this with both the roofing contractor and a solar installer early in the process so that the new roof can be specified with solar compatibility in mind from the outset. 

The incremental cost of specifying a solar-ready structure at the time of the roof replacement is far lower than retrospectively reinforcing a roof that was not designed with solar in mind.

Get a Free Solar Panel Installation Quote From EE Renewables

If you have a conservatory and you are wondering whether solar is possible for your home, EE Renewables will give you an honest, thorough assessment of every available option on your property, not just the conservatory roof.

We provide expert solar panel installation and solar battery storage installation across Southern England, Greater London, South West England, and South Wales, including London, Brighton, Oxford, Southampton, Bristol, Cardiff, and all surrounding areas. 

Get your free, no-obligation solar installation quote from EE Renewables today and find out what the right solar solution looks like for your home.

Our experienced team surveys every surface on your property and recommends the installation approach that delivers the best possible performance, return, and longevity for your specific home.

We will never recommend an installation that puts your roof or your home at risk. If your conservatory roof is not suitable, we will find the solution that is, and we will explain everything clearly so you can make the right decision with confidence.

Frequently Asked Questions

Can solar roof tiles be used on a conservatory roof instead of conventional panels?

Solar roof tiles, sometimes called solar slates or photovoltaic roof tiles, are a lower-profile alternative to conventional solar panels. However, they are designed for installation on conventional structural roof surfaces such as tiled house roofs and are subject to the same structural load and fixing requirements as standard panels. 

They are not suitable for polycarbonate or glass conservatory roofs, and their compatibility with solid conservatory roofs is subject to the same structural assessment requirements as conventional panels. Solar roof tiles are also considerably more expensive per kilowatt of installed capacity than standard panels, which further limits their appeal as a solution to the conservatory roof challenge.

Will installing solar panels on a solid conservatory roof affect my conservatory’s building warranty?

Most conservatory manufacturers and suppliers offer a product or installation warranty on the conservatory structure, which typically covers the frame, glazing, and roofing components. Adding solar panels to the roof after installation is likely to void or limit any warranty on the roof structure if the work is not approved in writing by the original manufacturer or supplier. 

Before proceeding with any conservatory roof solar project, it is worth contacting the conservatory company and asking explicitly whether a solar installation would affect the warranty, and getting any response in writing. For conservatories that are already outside their warranty period, this consideration is less relevant.

Can solar panels on a conservatory cause overheating inside?

This is a common concern that is worth addressing directly. Solar panels on a solid conservatory roof would actually reduce the amount of direct solar radiation passing through the roof surface, which could help moderate temperatures inside the conservatory compared to a fully transparent or translucent roof. 

However, because solid tiled conservatory roofs already block direct sunlight, the thermal impact of adding solar panels to this surface is minimal. For polycarbonate or glass roofed conservatories where overheating is an issue, the solution is typically improved ventilation, solar control glazing, or a full roof replacement rather than solar panels.

Can I get a combined quote for a conservatory roof replacement and solar installation?

Yes, and this is actually one of the most sensible approaches if your conservatory roof needs replacing and you are interested in solar. Some specialist roofing and solar installation companies can coordinate both elements of the project, ensuring that the new roof is specified to be solar-ready before the panels are fitted. 

Even if the two trades are handled by separate contractors, coordinating them as a single project means the roofing contractor can incorporate the correct structural elements for solar at the time of the roof build rather than as a costly retrofit. 

EE Renewables is happy to discuss this kind of coordinated approach with homeowners who are planning a conservatory roof upgrade.

Is a conservatory roof solar installation covered by the Smart Export Guarantee?

Any MCS-certified solar installation is eligible for the Smart Export Guarantee, regardless of whether the panels are mounted on a house roof, a garage roof, a flat roof, or a conservatory roof. The key requirement is that the system is installed by an MCS-accredited installer and that the installation is registered with the MCS database. 

Provided a conservatory roof installation meets these requirements, which it will when carried out by a qualified professional following a proper structural assessment, the system will be fully eligible for SEG export payments from a licensed electricity supplier.