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The whole life cycle process of an electrochemical energy storage power station includes the project construction phase and the project operation phase. On the one hand, it is necessary to analyze the cost composition of the electrochemical energy storage power station; on the other hand, it is necessary to analyze the influence parameters of various cost calculations. 1.1  Construction cost The construction cost of an energy storage power station, also known as the system cost, refers to the cost of an energy storage system per unit capacity. It is mainly composed of equipment installation cost (including battery cost) and construction cost (excluding land cost). Energy storage equipment includes energy storage batteries, battery management systems, energy storage inverters, and power distribution systems. The purchase cost of these equipment constitutes the equipment installation cost. Construction costs mainly include construction engineering fees, installation engineering fees, and equipment and facility design and commissioning expenses. The battery cost accounts for a large proportion of the equipment cost. At the same time, the battery operation and maintenance and fault replacement are highly professional. In order to reduce the financial burden of one-time investment and the difficulty of battery operation and maintenance, the investor adopts the method of leasing to the battery manufacturer The lease of the battery is ten years; the battery manufacturer is responsible for daily operation and maintenance and free replacement of the faulty battery during the lease period, and the investor pays the battery cost annually. In the process of calculating the construction cost of energy storage, the declining proportion of total construction cost, unit energy construction cost and energy storage capacity parameters should be considered. 1.2 Charging cost The charging cost of an energy storage power station refers to all costs incurred during the charging process. During charging, the energy conversion efficiency cannot reach 100%, resulting in the cost of energy loss. Therefore, this part of the cost mainly depends on the energy conversion efficiency. For example, the charging electricity fee is 1 unit price per kWh, and for an energy storage device with an efficiency of 75%, the total energy cost is: 1/75%=1.33/kWh. To calculate the cost of energy storage charging, it is necessary to consider the charging price, equipment utilization efficiency, the annual discharge capacity of the energy storage system, and energy conversion efficiency parameters. 1.3 Operational labor cost In some cases, the operation of energy storage equipment may require labor. Within a certain range, the fixed labor cost has nothing to do with the size of the stored electricity, and the total cost is constant. Variable labor costs are directly proportional to the frequency and duration of storage usage. In many cases, the calculation of labor costs for bat...