A team of Indian scientists from CeNS in Bengaluru has developed a scalable next-generation device for producing green hydrogen by splitting water molecules. This green hydrogen production method is significant as it can decarbonize industries, power vehicles, and store renewable energy. The device created by the CeNS team uses only solar energy and earth-abundant materials, avoiding reliance on fossil fuels or expensive resources. The researchers designed a silicon-based photoanode with an innovative heterojunction architecture, enabling efficient solar-to-hydrogen conversion. The device demonstrated remarkable long-term stability and high efficiency, even at a large scale. With further development, this technology could facilitate hydrogen-based energy systems for various applications, powered by the sun. The research was published in the Journal of Materials Chemistry A, showcasing the promising advancements in renewable energy and sustainable hydrogen production.