Why are more roofs not made of solar tiles? For some, it’s a question of aesthetics, while for others, the complexity of installation and repair is a deterrent. Solar Service of Colorado's Kate Collardson explains that while solar shingles are an appealing alternative, they lack the simplicity of traditional solar panels in terms of troubleshooting and maintenance.

Despite challenges, companies like the Swiss Freesuns are pushing forward, seeing opportunities where others see obstacles. The key, they believe, lies in innovative technologies like matrix shingling, which could revolutionise how solar cells are connected, enhancing both efficiency and aesthetics.

The debate over solar roofs is not just about appearance, says Martin Heinrich from the Fraunhofer Institute, but about maximising the use of rooftops to generate electricity. As the technology improves, it might eventually become standard to integrate solar into new roofing projects, making the future a bit brighter and more efficient.

While the initial cost and complexity may deter many, the potential benefits—especially for historic buildings and those wishing to reduce their carbon footprint—make the solar roof a promising development. As more companies innovate, it’s clear that the sun is not the only thing that will shine on these tiles.