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Install the solar power system in the roof top of the enterprise workshop,install wind power system in the clearing space, the central control system is intelligent control of new energy generation, charging and discharging of energy storage system, so as to ensure that the new energy electric vehicle can use the green energy firstly when using the charging pile during the day or night. When the new energy generation is insufficient, the peak valley electricity price difference will be took advantage to reduce the cost of electricity.