What is the difference between solar tiles and solar panels?

Solar panels are installed on top of your existing roof on a mounting rail system — they sit above the roof surface. Solar tiles replace your existing roof tiles entirely, integrating the solar cells into the roof covering itself. In-roof solar systems are a middle ground, fitting flush with surrounding tiles at roof-tile level rather than above them. All three generate electricity from the photovoltaic effect.

Can solar tiles be used in conservation areas?

Solar tiles are often more acceptable to planning authorities in conservation areas than standard roof-mounted panels because they are less visually disruptive. However, they are not automatically permitted in all conservation areas — always obtain pre-application planning advice before commissioning any solar installation if your property is in a conservation area or is listed.

What is an in-roof solar system and is it better than solar tiles?

An in-roof solar system replaces a section of conventional tiles with solar panels that sit flush at tile level rather than above it — similar in look to integrated solar tiles, but using standard solar panel technology. They're significantly cheaper than true solar tile products (£9,000–£15,000 for a residential system), generate more electricity per pound spent, and are widely available from MCS-certified UK installers. For most homeowners wanting a cleaner look than standard on-roof panels, in-roof systems are the practical sweet spot.

Do solar tiles add value to a house?

Solar tiles should add value similarly to solar panels — the EPC improvement, reduced running costs, and environmental credentials are all equivalent. However, because solar tiles cost significantly more than standard panels and have lower financial returns, they may not add proportionally more value than panels. The aesthetic premium may appeal to certain buyers, particularly for high-value properties where roof appearance is scrutinised more closely.

Solar Tiles vs Solar Panels for 2026 - Which Is Better for UK Homes?

Q: Are solar tiles worth it in the UK?

Solar tiles are worth it in specific circumstances — particularly when you need to replace your roof anyway, when you're building a new home, or when planning restrictions prevent standard panels. For homes with a functional roof and primarily financial motivations, standard solar panels offer far better value with payback 7–11 years versus 20–25+ years for most solar tile products.

Q: Do solar tiles generate as much electricity as solar panels?

Typically no — solar tiles usually achieve 15–20% efficiency versus 20–24% for modern solar panels. They also run hotter (less ventilation) which further reduces output. A 4kWp solar tile system will generally generate less electricity per year than a 4kWp standard panel system, though the gap varies by product. Always check the expected annual generation (kWh) in any quote, not just the rated peak output (kWp).

Solar tiles and solar panels both generate electricity from sunlight, but they serve very different customers. Standard solar panels are mounted on your existing roof and are the right choice for the vast majority of UK homeowners. Solar tiles integrate into the roof structure itself and suit homeowners who need a more discreet installation, particularly those in conservation areas, with listed buildings, or who prioritise aesthetics above cost.

The cost difference is significant. A typical 4kWp solar tile system costs two to three times more than an equivalent panel installation. But for the right property, the planning advantages, visual integration, and potential property value uplift can justify that premium.

This guide compares solar tiles and solar panels across cost, performance, planning requirements, and real-world suitability for UK homes in 2026.

Contents

1 Key Takeaways
2 Solar Tiles vs Solar Panels: What’s the Difference?
3 Solar Tiles Available in the UK
- 3.1 Tesla Solar Roof
- 3.2 Marley Solar Tiles
4 Cost Comparison: Solar Tiles vs Solar Panels
5 Efficiency: Do Solar Tiles Generate as Much Power as Panels?
6 Planning Considerations
7 When Should You Choose Solar Tiles Over Solar Panels?
8 Frequently Asked Questions
9 Summing Up

Key Takeaways

Solar tiles integrate directly into the roof structure and replace conventional tiles, they’re more aesthetically pleasing but significantly more expensive than standard solar panels.
Solar panels mounted on an existing roof are more efficient, cheaper, and have faster payback, typically 7–11 years vs 20–25+ years for solar tiles.
Solar tiles are best suited to new-build projects or whole-roof replacements where the roof needs replacing anyway.
In conservation areas or on properties where standard roof-mounted panels would require planning permission, solar tiles can be a viable alternative.
The Tesla Solar Roof and Marley Solar Tiles are the main solar tile products available in the UK in 2026.

Solar Tiles vs Solar Panels: What’s the Difference?

Solar panels and solar tiles both convert sunlight into electricity using photovoltaic technology. The difference is in how they integrate with your roof.

Solar panels are installed on top of your existing roof, fixed to the tiles or slates using a mounting rail system. The panels sit above the roof surface, typically 100–200mm above the tile. They don’t replace your existing roof covering, they sit on top of it.

Solar tiles (sometimes called solar roof tiles or integrated solar) replace your existing roof tiles entirely. They form the roof covering itself, with the photovoltaic cells embedded in or forming the tile surface. From the outside, the roof looks like a normal tiled or slated roof, or like a very uniform, dark-toned modern roof.

Both generate electricity from the same photovoltaic technology. The choice between them is largely about aesthetics, timing, and budget.

Solar Tiles Available in the UK

Tesla Solar Roof

The Tesla Solar Roof is the highest-profile solar tile product globally and is available in the UK through Tesla’s certified installer network. The product consists of tempered glass tiles, some containing solar cells (active tiles) and some purely decorative (inactive tiles) that look identical.

The Solar Roof replaces your entire existing roof and includes the Tesla Powerwall 3 battery as part of the system. This is not a partial solar solution, it’s a whole-roof replacement plus battery storage.

UK pricing for the Tesla Solar Roof is substantial: expect £50,000–£100,000 or more depending on roof size and complexity, including installation and the Powerwall. For comparison, a conventional 5kWp solar panel system with a battery costs £12,000–£18,000.

The Tesla Solar Roof makes sense only when you need to replace your entire roof anyway, otherwise you’re paying to demolish a perfectly functional roof covering and replace it with a premium product.

Marley Solar Tiles

Marley is a UK-based roofing manufacturer offering the SolarTile product range, in-roof solar panels designed to integrate with Marley’s conventional concrete and clay tile systems. Unlike the Tesla Solar Roof, Marley Solar Tiles are discrete solar modules that sit flush within a standard tile roof rather than replacing all tiles.

A Marley SolarTile installation typically involves removing a section of conventional tiles in the best solar location (usually centre-south facing) and replacing them with the flush solar modules. The rest of the roof remains as standard tiles.

This approach is more cost-effective than the Tesla Solar Roof, a typical residential Marley SolarTile installation costs £10,000–£20,000 depending on the number of tiles and roof complexity. It’s more expensive than conventional solar panels but less so than a full Solar Roof replacement.

Cost Comparison: Solar Tiles vs Solar Panels

Product Type	Approx. Installed Cost (4kWp equivalent)	Payback Period	Aesthetics	Best For
Standard on-roof solar panels	£7,000–£10,000	7–11 years	Visible panels above roof	Most homes, best value
In-roof solar system	£9,000–£15,000	10–15 years	Flush with roof surface	Aesthetic concern, heritage areas
Marley SolarTile	£12,000–£20,000	15–20 years	Integrated with tiles	New builds, roof replacements
Tesla Solar Roof	£50,000–£100,000+	25–40+ years	Premium aesthetic	Roof replacement only, wealthy buyers

Efficiency: Do Solar Tiles Generate as Much Power as Panels?

Standard solar panels in 2026 achieve 20–24% efficiency (TOPCon and PERC monocrystalline). Solar tiles generally achieve 15–20%, somewhat lower, for two reasons.

First, solar tiles must compromise on cell technology to achieve the tile format. The manufacturing constraints mean lower efficiency cells are more commonly used.

Second, solar tiles typically have less optimal ventilation than elevated panels. Panels on a mounting rack have air flowing beneath them, which cools the cells and maintains efficiency. Flush-mounted tiles run hotter, which reduces efficiency, solar cells lose output as temperature rises.

In practice, a 4kWp solar tile system will generate somewhat less electricity per year than a 4kWp standard panel system of the same rated output, due to these thermal and efficiency differences. If you’re comparing quotes, check the expected annual generation (kWh) rather than just the rated peak output (kWp).

Planning Considerations

In conservation areas, national parks, and on listed buildings, standard roof-mounted solar panels may require planning permission (or may not be granted permitted development rights). This is where solar tiles can offer an advantage, they are less visually disruptive and may be more acceptable to planning authorities.

However, even solar tiles are not automatically permitted in all protected areas. If your property is in a conservation area or is listed, obtain pre-application planning advice before commissioning any solar installation, whether panels or tiles.

For properties in non-protected areas, both standard panels and in-roof systems fall within permitted development, subject to the standard limits (not protruding more than 200mm above the roof surface for in-roof systems, not on a roof wall that fronts a highway).

When Should You Choose Solar Tiles Over Solar Panels?

Solar tiles make sense if:

You need a new roof anyway. If your existing roof is at the end of its life, the incremental cost of solar tiles over conventional tile replacement is much smaller than the headline price suggests. Replacing a large roof with tiles costs £15,000–£30,000 anyway, the premium for a solar tile product may be £10,000–£20,000 additional, with the solar generation value as a partial offset.
Aesthetics are a primary concern. For homeowners who find standard panels visually unappealing on their property, solar tiles or in-roof systems offer a significant aesthetic improvement.
You’re in a heritage setting. Where planning authorities require minimal visual impact, solar tiles may be the only viable route to solar generation.
You’re building a new home. In a new build, specifying a solar tile product from the outset avoids the disruption of retrofitting and integrates the roof and solar system as a single design element.

Frequently Asked Questions

Are solar tiles worth it in the UK?

Solar tiles are worth it in specific circumstances, particularly when you need to replace your roof anyway, when you’re building a new home, or when planning restrictions prevent standard panels. For homes with a functional roof and primarily financial motivations, standard solar panels offer far better value with payback 7–11 years versus 20–25+ years for most solar tile products.

How much do solar roof tiles cost in the UK?

Solar tile costs vary significantly by product. The Tesla Solar Roof costs £50,000–£100,000+ for a whole-roof installation including Powerwall. Marley SolarTile systems for a section of a domestic roof cost £12,000–£20,000. In-roof solar panel systems (a middle ground) cost £9,000–£15,000. Standard on-roof solar panels cost £7,000–£10,000 for an equivalent 4kWp system.

Do solar tiles generate as much electricity as solar panels?

Typically no, solar tiles usually achieve 15–20% efficiency versus 20–24% for modern solar panels. They also run hotter (less ventilation) which further reduces output. A 4kWp solar tile system will generally generate less electricity per year than a 4kWp standard panel system, though the gap varies by product. Always check the expected annual generation (kWh) in any quote, not just the rated peak output (kWp).

Is the Tesla Solar Roof available in the UK?

Yes. The Tesla Solar Roof is available in the UK through Tesla’s certified installer network. It involves replacing your entire roof with Tesla’s tempered glass tiles (some solar-active, some decorative) and typically includes a Powerwall 3 battery. UK costs are typically £50,000–£100,000+, making it suitable primarily for high-value properties where a complete roof replacement is already planned.

Summing Up

Solar tiles and solar panels both generate clean electricity from your roof, the choice between them comes down to budget, timing, aesthetics, and planning context. For most UK homeowners with a functional roof, standard on-roof solar panels offer the best value: lower cost, faster payback, and proven reliability.

If you’re unsure which solution is right for your property, our MCS-certified installers can assess your roof and discuss all options.

Updated April 2026