Understand
Why are more roofs not made of solar tiles?
Overview
Solar tiles or shingles offer an aesthetic alternative to traditional rooftop solar panels, which is particularly useful for historic buildings governed by heritage rules. However, the adoption of solar roofs remains limited due to high costs, complex installation and repair processes, lower energy efficiency, and a lack of standardisation compared to standard photovoltaic setups. Despite setbacks such as Tesla stopping its solar roof marketing, some companies and researchers remain optimistic, pointing to potential advancements like matrix shingling technology and automated design software.
Key points
- Solar roofs provide an alternative to traditional panels for people who dislike the look of standard solar or are bound by historic building regulations.
- Tesla stopped offering solar roofs in August following disappointing sales and a lawsuit over price hikes, impacting the industry.
- Solar roofs can cost twice as much as standard mounted solar panel systems before factoring in repair costs.
- Installation and repairs are complicated because every roof is unique, requiring collaboration among roofers, installers, and electricians, and making maintenance difficult without causing micro-fractures.
- Solar tiles are generally less efficient than standard panels due to smaller tile sizes, heat buildup from being close to the roof, and the use of coloured tiles.
- New technologies like matrix shingling, which uses conductive adhesive instead of visible wires, may help improve energy output and appearance in the future.