Abstract: Under the background of source-grid-load-storage coordination optimization becoming the development trend of power system,a comprehensive and reasonable assessment of the system coordination level is conducive to grasping the key links that affect the ability of the system coordination,guiding the optimization of planning scheme. Firstly,the uncertain factors affecting the coordinated ability of the system are analyzed under the background of source-grid-load-storage coordinated operation,and the evaluation index system considering multi-agent interaction and hierarchical level is constructed. Then the mathematical model of each index is established,and the source-grid-load-storage coordination level evaluation method based on AHP-Delphi weighting method is proposed. Finally,the case study is carried out to comprehensively evaluate the rationality of the actual planning scheme for three regions in a province,which provides a reference for the optimization decision of the planning scheme.