TNO researchers have collaborated with a Dutch company to develop the world’s first electrically functional perovskite solar roof tiles.These tiles feature curved modules that maintain an efficiency level of 12.4%.Built on flexible perovskite solar cells made using materials developed by TNO,this innovation represents a landmark advancement in the integration of solar technology into the built environment.
In partnership with ASAT B.V.,these perovskite solar modules,mounted on flexible foil,have been integrated into curved composite roof tiles to generate sustainable electricity.TNO confirms that this development meets the need for increased sustainable power generation without putting additional pressure on land or infrastructure.
Roland Valckenborg,TNO’s senior solar project manager,explained that the tiles allow rooftops and infrastructure to produce sustainable power without compromising design or aesthetic standards.He framed the development as a key step forward for solar adoption in built environments.
Performance testing confirms minimal impact on module efficiency when curved to fit roof tiles.Individual modules achieve a peak efficiency of 13.8%,with 12.4%retained once installed on curved roof tiles,demonstrating practical viability for real-world applications.
A key advantage of the technology is that it is ready for industrial production:the materials and processes operate under standard conditions and are suitable for the large-scale,roll-to-roll production of flexible solar foil.TNO has completed a full development cycle,progressing from small laboratory test cells to 10×10 cm flexible modules and ultimately to the commercially ready perovskite solar roof tiles that have been unveiled.
Martijn van Gruijthuijsen,the Deputy Minister of Economic Affairs for the province of North Brabant,noted that this innovation,delivered through collaboration within the Solar Innovation Alliance and utilising TNO’s expertise,aligns with the province's commitment to addressing current and future societal challenges.This innovation marks the next phase in the energy transition.
TNO’s objectives include making solar energy more affordable and accessible,and establishing a foundation for increased European production.The organisation intends to improve the technology's lifespan,reliability,and scalability further to facilitate its commercial deployment.To this end,TNO launched the spin-off company Perovion Technologies on 11 March 2026,as announced.
