European research institutes are leaders in solar cell research, as evidenced by impressive results in TOPCon, SHJ, and IBC cells. Promising laboratory results paint a bright future for the technological development, with the next frontier involving the integration of clean room technologies into production lines. Additionally, innovative approaches by forward-thinking companies aim to conserve resources, such as silicon, silver, and process consumables, through consumption reduction or the use of alternative materials and processes. This session brings together pioneering approaches, alongside steady and robust R&D development on the journey from lab to fab. Solar device development is high-tech.