A European team of researchers has developed a system that harvests rainwater running off PV panels for household use or hydrogen production in the Sahel region. By integrating water and energy harvesting, the system aims to enhance water security by making more water available for domestic use or crop irrigation. The researchers analyzed the system's potential in the Sahel region, calculating its ability to contribute to household water demand and supply both electricity and rainwater for hydrogen production. The study found that the system can meet up to 7% of household water demand and potentially exceed 100% coverage in regions south of the Sahel. The innovative approach utilizes fixed-tilt PV arrays with efficient water collection mechanisms, addressing sustainability challenges and offering a practical solution for increasing water access and supporting hydrogen production. The research, presented in 'Rainwater harvesting potential from photovoltaic energy systems in the Sahel,' involves contributions from researchers in the Netherlands and Spain, emphasizing the significance of such integrated systems in arid regions to promote water and energy sustainability.