This paper is based on research findings within the research project ESOB-RKI, which is carried out by the University of Applied Sciences Erfurt and the Bauhaus University of Weimar. Heavy-duty road freight transport causes about a third of the CO2 emissions of all vehicles in Germany. Consequently, its transformation is crucial for achieving climate goals. Since the largest part of road freight transport should be based on direct use of electricity due to the high efficiency advantages, we focus on the electrification and do not investigate road freight transport based on hydrogen or synthetic fuels.