Why solar tiles are still a rare sight on roofs

For years, solar roof tiles have been presented as a stylish answer to a common complaint: some homeowners simply do not like the appearance of traditional solar panels. These tiles contain solar cells but are designed to blend in with regular roofing materials. This feature is particularly relevant for historic buildings, where strict rules often prevent changes to a property's outward look.

Despite the early excitement, solar tiles have failed to become a mainstream choice. In August 2026, the electric vehicle and energy company Tesla stopped selling its solar roof online, a decision that sent shockwaves through the industry. The move followed weak sales and legal disputes over sudden price increases. While some observers saw this as a very bad sign for the technology, others viewed it as a chance for smaller firms to grow. For example, the Swiss company Freesuns is now thinking about entering the US market.

Several practical obstacles explain why solar tiles remain rare. First, the cost is significantly higher than that of standard panels. According to industry figures, a solar tile roof can cost roughly twice as much as a mounted panel system. One reason is that every roof is slightly different, so each project needs custom engineering and installation. As a result, manufacturers cannot easily benefit from large-scale, standardised production.

The installation process itself is another major barrier. Solar tile projects require close cooperation between roofers, electricians and solar specialists. This coordination often leads to delays and complex paperwork, as building regulations for tiles tend to be more demanding than those for panels. One experienced professional, Kate Collardson, noted that many roofers feel they lose money on these projects because the sales process takes so long. They could finish many standard roofing jobs in the same amount of time.

Performance and maintenance present further difficulties. Solar tiles are generally less efficient than traditional panels. They are smaller, and because they sit flush with the roof, they get less cooling airflow. Heat reduces solar performance, so this is a real disadvantage. Coloured tiles, which some customers prefer for aesthetic reasons, are even less efficient since black surfaces absorb light best. When a tile breaks, repairs are also more complicated. Technicians often lack the detailed electronic mapping that helps them quickly find faults on standard panels. Moreover, walking on the tiles to reach a damaged one can cause micro-fractures, leading to more problems later.

Given these issues, many consumers now focus mainly on financial savings rather than appearance. Ben Graves, a co-founder of a UK solar company, believes most people in Britain simply cannot afford the extra cost. However, supporters of the technology argue that the comparison with standard panels is unfair. They suggest that solar tiles should be seen as a way to generate additional electricity from a surface that would otherwise just sit there unused.

Looking ahead, new manufacturing methods could help. One promising idea is matrix shingling technology, where solar cells are cut into strips, overlapped and connected with a special adhesive instead of metal wires. This approach allows electrical current to flow more flexibly and might improve both the performance and the design of solar tiles. Still, for now, traditional panels continue to dominate the market.