Researchers from Linköping University in Sweden are pioneering a new method to produce hydrogen using sunlight, with the aim of expanding the use of this clean fuel in transportation. With European regulations targeting a complete phase-out of carbon dioxide emissions from new vehicles by 2035, hydrogen is seen as a viable option for heavy-duty transportation modes that cannot rely solely on batteries. The innovative approach involves a special three-layered material that can harness sunlight to split water and generate hydrogen efficiently. This new material has shown a significant performance improvement over existing methods. While hydrogen offers a clean energy solution, challenges such as cost, performance, and infrastructure remain hurdles for its widespread adoption. Despite these obstacles, the development of green hydrogen through processes like electrolysis presents a cleaner alternative to fossil fuel-derived hydrogen. The research team at Linköping University aims to further enhance the efficiency of their method in the coming years. If successfully implemented, hydrogen could play a crucial role in reducing air pollution and transitioning away from nonrenewable energy sources in the transportation sector.