SayPro developments to ensure improved system performance combined with its extended lifetime by addressing BoP components, including new developments on BoP sub-systems, and module/system interactions with respect to efficiency, reliability, durability and cost. The improvement is expected from a combined approach addressing the architecture and operation strategies of a system both supported by the development or redesign of at least one BoP component preventing optimized efficiency at beginning of life and over the long term. Moreover, primary focus will be on heavy-duty road applications, within the boundaries of STaSHH definitions for the actual validation of results, even though spillover benefits in other transport modes shall be highlighted.