This project aims at developing an efficient sustainable solution for domestic space heating and hot water supply with an integrated hybrid fuel cell – heat pump system. Utilizing waste heat from the fuel cell, we will deliver an optimized design for the hybrid system, and develop the key element required: a heat exchanging fuel cell electrode with optimized coolant flow path, extracting high heat without reduction in fuel cell safety or efficiency, relying on the design freedom of additive manufacturing. Based on hydrogen, the solution combines effective heat and hot water supply with negligible CO2 emissions.