Electric vehicles have become increasingly popular in recent years and are a significant step towards sustainability and climate protection. This thesis deals with vehicle to grid (V2G) capable vehicles and examines the services for their potential to generate profit and stabilise the electricity grid. The main task of this thesis is to compare the typical charging rates of 2.3kW, 11kW and 22kW and to investigate them in the light of battery degradation and potential profit. Specifically, we propose a calculation model to find the profit of each charging rate’s best possible charging periods and calculate the profitability. Our evaluation analyses the profit with and without degradation. Results show that at higher charging rates, battery degradation costs almost balance out.