The research work focuses on the development of innovative heat and power cogeneration units to increase the efficiency of a mini block heat and power plant (CHP). The main objective is the integration of suitable electric and thermal storage systems to allow an energy supply that is independent of the energy converter. The most promising systems are thermo-chemical heat storage devices based on zeolite, or latent heat storage devices based on PCM. In the department's research on powertrains, emphasis is placed on the durability of the energy converter, and on achieving the longest possible maintenance interval.