<p>Electrical <?tk 4?>networks all over the world have a lot of problems, especially when it comes to the quality of the electricity they provide. Fast charging stations (FCSs) have recently become available, making it possible for rechargeable electric vehicles (EVs) to compete with regular cars, especially over long distances. However, these stations can put a lot of stress on the distribution system because they need a lot of power to charge at the same time. This puts a lot of stress on the system, which could make the grid work less well. This research paper says that adding an energy storage system (ESS) to the electrical distribution grid could help lessen these effects. In addition, a way to analyze the charging and discharging of stationary and electric vehicle batteries (EVBs) with the electric grid has also been created. This format can be used in three ways: Vehicle to Grid (V2G), Grid to Battery (G2B), and Battery to Vehicle (B2V). We used an inverter with an LCL filter to connect batteries in stationary vehicles and batteries in electric vehicles to the electric grid. This inverter is a third-order multivariable system that needs a strong and flexible control system to lower harmonics that affect utilities and consumers. The goal was reached by using a sliding mode control (SMC) strategy in the design of the controller. The MATLAB/Simulink simulation results show that the SMC is more effective and reliable than the proportional-integral (PI) controller at significantly improving the steady-state performance of the system and the quality of the grid current. The study suggested in this paper will be useful for people who work at charging stations and people who are interested in the quality of electrical power.</p>