The energy transition is a long-term process of changing the structure of production, transmission, distribution and consumption of energy, which is expected to reduce total energy consumption, increase the use of energy from renewable sources and abandon fossil fuels. The development of e-mobility and the use of electricity as energy fuel in road transport will enable significant improvements in security of supply and reduction of dependence on imported fossil fuels, increase energy efficiency, open space for greater integration of RES into the electric power system, reduce greenhouse gas emissions and local harmful emissions. With the expected increase in the share of electricity produced from intermittent renewable energy sources in the future, the electric power system will have increased demands for flexibility in order to maintain the stable and reliable operation of the entire system. There are various options to overcome these challenges, but the technical characteristics of e-mobility indicate that they are likely to play an important role in this regard. The analysis of the current state of e-mobility in the Republic of Croatia, together with other analyses made in the framework of this paper, shows that there is an unquestionable need to create a favourable technical, economic and regulatory-organizational environment for the development of e-mobility in order to enable the optimal utilization of the potential of its integration into the electric power system of the Republic of Croatia, thus confirming the basic hypothesis of the study. The interaction of all the improvements achieved through the implementation of the activities in accordance with the guidelines given in this study will enable faster development and realization of the key synergies of e-mobility and renewable energy sources.