Abstract
With the increasing demand for clean and low-carbon energy, high proportion of renewable energy has been integrated into the receiving-end grid. The grid-side energy storage project can ensure the safe and stable operation of the grid, but it still faces many problems, such as high initial investment, difficult operation and maintenance, unclear profit model, lack of business mode. Therefore, it is of great significance to evaluate the comprehensive benefit of energy storage projects in order to guide the sustainable development of large-scale energy storage projects and power system. By studying the technical and economic characteristics of energy storage, this paper establishes a comprehensive evaluation system from four dimensions of energy efficiency, economic, social, and environmental benefit. Combined with typical business modes and determining the subdivision index system of different modes, the comprehensive benefit evaluation model of grid-side commercial storage project based on Fuzzy-Analytic Network Process (ANP) approach is established. Empirical analysis of a 100-megawatt storage project is carried out to evaluate the project benefits comprehensively, the potential problems of the market development and business mode of the grid-side large-scale storage project are discussed, and the future development orientation and suggestions are put forward.
Highlights
IntroductionPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
The paper conducted a comprehensive evaluation system from energy efficiency, economic, social, and environmental benefits four dimensions based on literature review, and sub-dividable systems are identified according to typical business modes
The comprehensive benefit evaluation system established in this article comprehensively covers four dimensions from energy efficiency, economy, social benefits, and environmental benefits
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. The scale of renewable energy in the receiving power grid has been continuously expanded, which has seriously affected the safe and stable operation of the power grid and its ability to absorb renewable energy [1,2]. Large-scale energy storage is beneficial to improve the peak regulation ability, stability, and flexibility of the receiving end power grid [3]. The development and application of large-scale energy storage are still faced with many problems, such as excessive initial investment, difficult operation, unclear profit model, and immature business mode [4,5]
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