Abstract: Aiming at the capacity configuration of the community microgrid energy storage system,a multi-objective optimization configuration model of the independent microgrid energy storage system is constructed, and an optimal configuration method considering the power battery loss during the orderly discharge of electric vehicles is proposed. The model aims at minimizing the microgrid’s overall cost and clean energy waste rate. Taking power balance, power battery charging and discharging at different times as the constrain conditions,the optimal energy storage capacity allocation of electric vehicle under various working mechanisms are solved and obtained using non-dominated sorting genetic algorithms with elite strategies. The results show that, in order to make the system more advantageous in terms of environmental friendliness,power supply reliability and economy,the energy storage capacity configuration is selected under the orderly charging and discharging mechanism of electric vehicles.