Technical-Economic Analysis of a Power Supply System for Electric Vehicle Charging Stations Using Photovoltaic Energy and Electrical Energy Storage System

Electrical energy storage can reduce energy consumption at the time of greatest demand on the grid, thereby reducing the cost of fast charging electric vehicles (EVs). With storage, it is also possible to store mainly energy from renewable sources or to limit the power requested by Public Power Grid (PPG), allowing charging of EVs in areas where power supply is limited via PPG. In this paper, to meet the requirements of an EV charging station and the management of the energy storage system, a lithium-ion battery system with second life batteries is proposed and compared with new batteries. A photovoltaic system that will allow the use of solar energy is also proposed. HOMER Grid software was used to simulate and analyze the different systems from a technical and economic point of view for different cases. It was concluded that HOMER is a powerful tool but some drawbacks are also pointed out.