Solar Roof Tiles in the UK: Costs, Types & Are They worth It? (2026 Guide)

Solar roof tiles promise the holy grail of home solar: clean power without the bolted-on panel look. The catch is that they cost roughly twice as much as standard panels, and for most homes that premium is hard to justify. But there are specific situations where they make complete sense.

This guide cuts through the marketing to tell you exactly what solar roof tiles cost in the UK in 2026, which brands are worth your time, how efficient they really are, and the handful of cases where they beat conventional panels. By the end, you will know whether they suit your roof or whether your money is better spent elsewhere.

What are solar roof tiles?

Solar roof tiles, sometimes called solar slates or building-integrated photovoltaics (BIPV), are roof tiles with solar cells built in. They do the same job as standard solar panels – turning daylight into electricity – but they sit flush with your roof and look like ordinary tiles or slates instead of sitting on top in bulky frames.

That is the whole appeal. A solar tile roof generates power while keeping the clean, traditional look of a normal roof. As one specialist installer put it, “wherever you can install a roof tile, you can install a solar tile.”

Here is the key difference from panels, and it matters for your wallet: you cannot swap out a few tiles here and there. Solar tiles replace your roof covering, so you are effectively buying a new roof and a solar system in one go. That is why around 90% of installs go on new builds or full re-roofs, with only about 10% being retrofits onto existing homes.

Solar roof tiles vs standard panels: the honest comparison

The difference between the two comes down to three things: looks, cost, and output. Solar tiles win on looks. Standard panels win on cost and, usually, on power per square metre.

If your main goal is cutting your energy bills as fast as possible, standard panels are the smarter buy. They cost less, fit faster, and generally squeeze more power out of the same space. Solar tiles are the choice when how your roof looks genuinely matters to you, or when planning rules make raised panels a problem.

How much do solar roof tiles cost in the UK?

A solar roof tile installation costs around £13,000 on average in 2026, including both the tiles and the labour to fit them. That figure shifts depending on your system size, roof complexity, and the brand you choose. Here is how the cost breaks down by system size.

Cost per kWp is the figure to watch when comparing quotes, and it varies a lot by brand: roughly £1,800-£2,600 per kWp for Marley SolarTile, £2,400-£3,000 for Viridian Clearline Fusion, and £3,800-£5,200 for GB-Sol’s Welsh slate tiles, which carry higher labour costs. A quick warning: per-kWp prices move around and depend heavily on your specific roof. Always get at least three quotes from MCS-certified installers rather than relying on a headline figure.

Watch out for the hidden extras too. Scaffolding often gets quoted separately, so budget an extra £600-£1,000 if it is not included.

How efficient are solar roof tiles?

Most solar tiles run at 12-20% efficiency, with the best models reaching around 23%. Standard panels typically manage 18-25%. So tile for tile, you are getting slightly less power from the same area.

This matters because of how it affects your roof coverage. A south-facing 30m² roof might give you around 4.5kWp with standard panels but only about 3kWp with slate-style tiles. To hit the same output, you simply need more tiles covering more roof.

There is a quirk worth knowing for new builds chasing the Future Homes Standard: tiles count towards your generation target by their PV-active area, typically 65-75% of the physical tile area. So a tile roof covers more square metres but not every inch of it is generating. As a real-world example, a 178-tile GB-Sol install produces around 5.2kWp on a typical four-bed detached home.

One genuine plus: tiles tend to handle shade and low light a little better than panels in some setups, and many have mineral coatings that cut glare. But on raw efficiency, panels still lead.

Which solar roof tile brands are available in the UK in 2026?

The UK tile market is far smaller than the panel market – you have a handful of credible brands rather than dozens. Here are the ones worth knowing.

• Marley SolarTile – UK-based and MCS-certified, making it one of the most widely available and easiest to get installed. Each tile generates 335W at around 20.7% efficiency, with a 15-year product warranty and a 25-year performance warranty. The strongest all-rounder for most new builds and re-roofs.
• GB-Sol PV Slate – Welsh-made in Pontypridd, designed to match traditional slate roofs closely. The tiles are light at around 3.5kg each, so you can often re-roof without strengthening the structure. MCS-certified and well suited to heritage homes, though it carries the highest cost per kWp here.
• Solecco Solar – Leeds-based, offering tiles in eight colours from grey to terracotta and old English dark red. A 4kW system costs around £12,000. A good shout if you want a specific colour match.
• Viridian Clearline Fusion – Strictly speaking these are in-roof panels rather than tiles, but they sit flush in the roof for a neat, integrated look at a lower cost than true tiles (£2,400-£3,000 per kWp). This is the middle option if you want a tidy finish without the full tile premium.
• Edilians – Offers two types, Solar Max and HP 10 Solar, in slate or terracotta finishes to suit different roof styles.
• Ergosun – Designed in Derbyshire, with colour-matched grey or terracotta modules for a discreet finish.

Warranty and lifespan: how long do solar tiles last?

Solar roof tiles last up to 30 years, the same as standard panels. Quality tiles use tempered or fully-laminated glass and fail at rates comparable to top-tier solar modules.

Warranties usually come in two parts: a product warranty covering the tile itself, and a performance warranty guaranteeing a minimum output over time. The common pattern is around 15 years on the product and 25 years on performance – that is what Marley offers, for example, and most credible systems run to 25 years or better in total. Exact terms vary by brand, so check the warranty wording carefully before you commit, as the headline numbers do not always tell the full story.

If a single tile breaks, your installer can usually swap it without ripping up the whole roof. It is not a quick DIY job like a normal tile, though, because there are electrical connections involved.

Do you need planning permission for solar roof tiles?

For most homes, no. Roof-mounted solar in England counts as permitted development, so you will not need planning permission, as long as two conditions are met:

• The tiles do not sit above the highest part of your roof (chimneys aside).
• They do not stick out more than 200mm from the roof slope.

Solar tiles easily clear both, since they sit flush. There are two big exceptions to watch for.

Here is the irony, and the opportunity: solar tiles are often the answer in exactly these restricted settings. Because they look like traditional slate or clay, planners are frequently more willing to approve them than raised panels – particularly in conservation areas. For listed buildings the picture is more mixed, as heritage guidance can still object to tiles on prominent roof slopes, so treat approval as likely rather than guaranteed. If you live in a conservation area and have been told panels are a no-go, tiles may be your route to solar after all. Check with your local planning authority before committing.

Installation: timeline, certification and new builds

A solar tile installation takes around two weeks once your survey, design, and any planning permission are sorted. The bigger the system, the longer it runs – a 1kW system might take a week, while a 5kW install can stretch to three weeks. Retrofits take longer than new builds because the old tiles have to come off first.

A non-negotiable point: your system must be fitted by an MCS-certified installer. This is not a DIY job, and the certification is not just red tape. Without an MCS-certified installer and system, you cannot claim payments under the Smart Export Guarantee (SEG), which pays you for surplus electricity you send back to the grid. Rates currently range from around 3p to 25p per kWh depending on your supplier.

Timing is everything with tiles. They make the most financial sense when you are building from scratch or re-roofing anyway, because you are combining two jobs into one. If your roof is fairly new and in good shape, ripping it off to fit solar tiles rarely adds up – standard panels will serve you far better.

Who should choose solar roof tiles?

This is the decision that actually matters, so here is the clear version. There are three routes, and the right one depends on your situation.

Choose solar roof tiles if you are building a new home, re-roofing an old one, or you own a listed building or live in a conservation area where raised panels are not allowed. In these cases the cost premium shrinks, and tiles may be your only realistic path to solar.

Choose in-roof panels (like Viridian Clearline Fusion) if you want a flush, tidy look but cannot justify the full tile premium. They sit neatly within the roof at a lower cost per kWp than true tiles, making them the sensible middle ground.

Choose standard panels if none of the above applies to you – which covers most homes. If your roof is in good condition and your main aim is cutting bills quickly, standard panels are cheaper, faster to fit, and generally produce more power for the space. There is no shame in the practical choice.

Solar roof tiles: pros and cons

Best picks by category

• Best all-rounder: Marley SolarTile – widely available, MCS-certified, strong 335W output and a solid warranty.
• Best for heritage and conservation areas: GB-Sol PV Slate – lightweight, Welsh-made, and the closest match to a traditional slate roof.
• Best for colour matching: Solecco Solar – eight colours and a competitive £12,000 for a 4kW system.
• Best flush look on a budget: Viridian Clearline Fusion – in-roof panels that look neat for less than true tiles cost.

Frequently asked questions