EnerCube, a containerized energy storage system independently developed and produced by PAND with a customized capacity of 240kW/688kWh and connected to the user's photovoltaic system and diesel generator to form an intelligent Energy + Storage +Diesel generator system. Through on-grid mode operation and combining with the EMS scheduling strategy designed by PAND, it can intelligently deploy each power generation unit. The photovoltaic green power is given priority to provide to the load, and then charged to the energy storage system. According to the user's settings, the energy storage system can be charged from the utility grid during low electricity price periods and released during the peak. In emergency situations, the system can also start the diesel generator as power supply with one button, so as to meet the diverse and reliable energy demands.