In a groundbreaking development, three Fraunhofer institutes have partnered to create a novel solar-powered photoelectrochemical cell (PEC) aimed at producing green hydrogen efficiently. The Neo-PEC joint research project focuses on utilizing renewable energy sources, particularly solar panels, to power the electrolysis of water into hydrogen and oxygen. Unlike traditional electrolysis equipment, this modular solution integrates semiconducting materials on glass plates, enabling the direct conversion of sunlight into hydrogen and oxygen. The system's tandem module design optimizes the absorption of different wavelengths of light, enhancing hydrogen generation while maintaining high energy efficiency. Through their collaborative efforts, researchers have successfully designed a reactor capable of producing over 30 kilograms of hydrogen annually per square meter exposed to sunlight under European conditions. This significant yield opens up possibilities for utilizing green hydrogen in various applications, including hydrogen-fueled vehicles with impressive travel ranges. The project's success can be attributed to the expertise of each Fraunhofer institute involved: materials and processing research by Fraunhofer IKTS, large-area coating techniques by Fraunhofer IST, and reactor design and evaluation by Fraunhofer CSP. Looking ahead, the institutes plan to continue their collaboration and engage with commercial partners to enhance the decentralized generation and distribution of hydrogen. By combining their strengths in research and technology development, they aim to further advance sustainable energy solutions for a greener future.