The long-term development of the energy sector requires the efficient use of energy besides the reduction of environmental pollution, as well as the reduction of the dependency on fossil fuels through a high integration of renewable energy sources and electric vehicles taking into account economic and ecological aspects. According to the information from the Statistical Yearbook 2017 of Statistic Austria, the number of purely electrically operated vehicles is constantly increasing according to the number of new registrations. The advancement in the area of battery capacities causes the corresponding charging capacities for faster charging processes - preferably three-phase current - and is thus a great challenge to network operators. In addition, the problem of the additional loads of the low-voltage distribution networks is particularly up-to-date due to efficient charging processes. ^Since the individual energy consumers are not operated at the same time with their maximum power, it is recommended to introduce the concept of simultaneity factors for the charging processes to get an objective evaluation of the network related effects. In this thesis, the question is linked with the question of how the grid loads are developing through higher charging capacities and how the simultaneity factors influence this process. On behalf of this fact and based on the data of the research project "e-Pendler in Niederösterreich", a program is developed with the aid of the software MATLAB, which can be used to map the charging characteristics of lithium-ion batteries, as well as the total performance profile for a selected observation period from stochastically generated charging profiles to be created. This allows the most probable peak load in a defined network point to be determined at any time and thereby to determine the simultaneity factors of the charging processes. ^The various parameter variations as well as the sensitivity analysis are provided for the evaluation of the simultaneity factors. Taking into account the characteristic properties, the curves of the simultaneity curves are graphically displayed, which are used for the subsequent network calculations. Next, the load flow calculations for a hypothetical distribution network with the NEPLAN program as well as own calculations for combinations of three scenarios of the 7,4 kW, 11 kW and 22 kW connection performances, are carried out with both the introduction and also neglecting of the simultaneity factors. The achieved results are also compared with the reference scenario "without electric vehicles". The program simulations show that the introduction of the simultaneity factors has a positive effect on the network load with the result of reducing the total power requirement and therefore the charging processes with higher power up to 22 kW in the private sector can realized.