STACK Hydrogen Solutions is a dynamic high-tech startup based on the RWTH Aachen Campus. As an ambitious team of fuel cell system and automotive experts, we develop innovative hydrogen solutions for commercial vehicle powertrains to shape the emission-free mobility of the future. As an efficient problem solver for our clients, our engineering approach is innovative, pragmatic and fast. With our engineering services and hardware, we support our clients on their journey towards long-range e-mobility. Our fuel cell range extender solutions are based on proven standard modules and foster complementary strengths of battery as pure energy provider on the one hand, and fuel cells as an energy converter on the other.