An Economic Evaluation Method for New Energy Station Configuring with Energy Storage

Abstract

The configuration of energy storage for new energy power stations is a promising method to deal with the intermittency, randomness, and uncertainty of new energy stations. However, the deployment of energy storage requires a certain amount of investment. Therefore, scientific calculation for the economics of new energy stations with energy storage is important, which can help analyze the competitiveness for new energy stations with energy storage. Among the existing economic analysis methods for new energy stations with energy storage, nonetheless, the perspective of various full-life investment and costs has not been fully considered. In this paper, an economic evaluation method for the recoverable price of new energy station configuring with energy storage is proposed. It comprehensively considers the investment, operating life, operation and maintenance cost for both new energy station and energy storage, together with the factors of discount rate, the proportion of energy storage capacity allocated to new energy stations, the annual utilization hours, and energy storage battery replacement. A simulation case for a solar power station with energy storage presents the application of this method. In addition, the calculation is simple and convenient, thus provide an effective means for evaluating the economy for new energy station configuring with energy storage.