Climate change and rising summer temperatures are increasing the risk of overheating in Swedish buildings, particularly in schools. Traditional buildings in Sweden are optimized for winter conditions and lack effective cooling strategies. The project addresses this by testing a novel, sprayable nanocoating that can be applied to existing windows. This technology, developed at Uppsala University, blocks infrared radiation while maintaining visible light transmittance, offering a cost-effective, passive cooling solution that reduces the need for active air conditioning.

The project is a collaboration between Uppsala University, Uppsala Kommun Skolfastigheter AB, and STUNS Energi. It involves developing and optimizing the coating, installing it in selected school buildings, and evaluating its impact on indoor temperature, energy use, and user well-being. Data will be collected via IoT (Internet of Things) sensors and user feedback, complemented by educational activities to raise awareness among students and staff.

Expected outcomes include reduced indoor temperatures, improved comfort and productivity, and lower energy demand. The project also aims to develop a scalable implementation model and explore commercialization pathways. Results will benefit building owners, municipalities, policy-makers, and students, particularly in older schools where retrofitting options are limited.