What is the capacitance of the energy storage cabinet? The capacitance of the energy storage cabinet refers to its ability to store electrical energy. The capacitance. . A capacitor stores electrical energy in the electric field between its plates, and the amount of stored energy is calculated using the capacitor energy storage formula E = ½ C V², where C is capacitance, and V is applied voltage. They assure perfect energy management to continue power supply without interruption. Constructed with long-lasting materials and sophisticated technologies inside. . The HJ-G215-418L industrial and commercial energy storage system from Huijue Group adopts an integrated design concept, with integrated batteries in the cabinet, battery management system, BMS energy management system, EMS, modular converter PCS and fire protection system.