A team at Germany's DLR Institute of Future Fuels and industry partner Grillo have developed a hybrid electrolysis method for producing green hydrogen with exceptional efficiency. The Hybrid Sulphur cycle (HyS cycle) uses concentrated solar heat and electrically driven electrolysis to achieve over 20% conversion efficiency, surpassing traditional methods by more than 50%. This innovative process involves a thermal step powered by a solar thermal reactor and an electrochemical step driven by electricity. The team has successfully operated a lab prototype and is now moving towards an industrial trial with Grillo. The pilot project will involve the solar-driven thermal step at DLR's site in Jülich and the electricity-driven step at Grillo's facility in Duisburg. The technology requires minimal electricity, with potential applications in various industrial processes. Researchers are optimistic about the efficiency gains and potential for integrating green hydrogen production with existing operations. The HyS cycle is a promising development in the quest for sustainable fuel solutions.