Scientists from the Centre for Nano and Soft Matter Sciences (CeNS) in Bengaluru, India, have unveiled an innovative device for producing green hydrogen through solar energy. This next-generation system relies solely on solar power and earth-abundant materials, eliminating the need for fossil fuels in hydrogen production. The device features a silicon-based photoanode with a unique n-i-p heterojunction architecture that enhances charge separation and transport efficiency, allowing for efficient solar-to-hydrogen conversion. Through the use of magnetron sputtering, the materials were precisely deposited to improve light absorption, charge transport, and reduce recombination loss. The device achieved impressive performance metrics, including high surface photovoltage and low onset potential, demonstrating its effectiveness in generating hydrogen under solar energy. Additionally, the device exhibited long-term stability, operating continuously for over 10 hours with minimal performance degradation, a notable achievement in Si-based photoelectrochemical systems. The research team envisions the technology's scalability and affordability for widespread adoption in various sectors, advancing the transition towards sustainable green hydrogen production. This development aligns with global efforts to decarbonize industries and power vehicles, highlighting the potential of solar-powered green hydrogen in achieving a cleaner and more sustainable future. The article also mentions other global developments in the green hydrogen sector, emphasizing the continuous efforts by researchers and companies to enhance the efficiency and scalability of green hydrogen production.