Abstract: In view of the large amount of energy storage battery in the power system,especially the increase in the user-side,it is very important to reduce the return time under the premise of reducing the investment cost.The economic evaluation and analysis of the user-side energy storage scheme were carried out.The investment cost,operation cost,power demand management income,peak valley arbitrage income,frequency modulation service income and demand response income were analyzed respectively.Combined with the current peak valley load change curve in Jiangsu province,two kinds of energy storage income were proposed through the daily charging and discharging times of energy storage and whether or not to participate in the enterprise load curtailment service.At the same time,the total economic evaluation model of the two energy storage schemes was obtained.Taking the energy storage equipment of an enterprise as an example,the economic evaluation was carried out,and the results of income comparison under the two energy storage schemes were obtained.The research results have certain guiding significance for the current commercial investment of energy storage equipment.

Key words: user-side energy storage scheme, economic evaluation, operating cost model, earnings model