Scientists have developed a ‘smart paint’ that can cool homes, reduce AC usage and even pull water from air, offering hope during rising heatwaves and water shortages
The technology works by preventing surfaces from heating up excessively. As the coated surface stays cooler than the surrounding air, water vapour in the atmosphere condenses into droplets that can then be collected. Researchers say this could help partially address water shortages while also reducing dependence on air conditioners and fans. According to reports, the paint could be especially useful in hot and drought-prone regions around the world where both cooling and water access are major concerns.The research team says the paint is designed to be practical and easy to use on roofs and walls. According to Dewpoint Innovations CEO Perjan Mehta, it can be applied using regular rollers or spray equipment, much like standard paint. The company is now partnering with Hems Paint Company to bring the product to market. Experts believe the technology could eventually be used in cities, rural areas, farms and remote regions facing extreme heat and water stress.The biggest question now is when the paint will become commercially available. The product is still in the testing phase, with further rooftop trials continuing in Australia’s harsh climate conditions. Developers say they are preparing for a commercial launch, although no official release date has been announced yet. Reports suggest the paint could reach markets after additional trials in 2026, possibly by 2027 or later. It may initially cost 50% to 100% more than regular premium paints.Researchers believe innovations like this could become increasingly important as cities grow hotter due to climate change. A paint that can cool buildings, reduce electricity consumption and generate water at the same time could offer major environmental benefits. Experts say technologies like these may eventually become standard features in future buildings, especially in regions facing rising temperatures and water scarcity.The technology could be particularly useful for countries like India, where extreme heatwaves and water shortages are becoming more common. Cooler rooftops could help reduce electricity bills by lowering AC usage, while water collection may provide additional relief in drought-prone areas. However, the product is still undergoing lab and field testing, so consumers may have to wait a few more years before it becomes widely available. Researchers continue to improve the technology ahead of its expected commercial launch.
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As global temperatures continue to rise, scientists are searching for solutions that can both cool homes and address water shortages. Researchers from the University of Sydney, along with startup Dewpoint Innovations, have developed a new nano-engineered paint that aims to do both. The special coating can reflect up to 97% of sunlight, helping reduce surface temperatures by as much as 6 degrees Celsius. It can also pull moisture from the air and convert it into water droplets — all without using electricity.
