Abstract: Resource evaluation is a critical foundation for its development.This study aims to conduct a quantitative evaluation and reveal the distribution patterns of resource of pumped storage hydropower (PSH) sites in China to promote its high-quality development.In this paper, a statistical analysis approach is employed to develop a quantitative evaluation method for assessing the resource endowment of pumped storage hydropower station sites.Using data from 452 PSH projects or sites, the analysis considers both geographical and administrative divisions, with static investment per kilowatt as the key metric.The proposed method is applied to quantitatively evaluate the resource endowment of PSH sites across China.The study finds that the resource of PSH sites is highly correlated with topographical, geological, and water conditions.Additionally, using prefecture-level administrative divisions as the granularity for regional evaluation of pumped storage resources assumes both representative and feasible.The results provide a graded and quantitative evaluation of the resource endowment of PSH sites across different regions.These findings can guide the classification and development of site selection for PSH projects, support the establishment of benchmark capacity electricity price, and contribute to refining the two-part tariff system.These findings is significant for reducing costs and increasing efficiency in the industry, promoting the high-quality development of China′s PSH sector, and advancing the green and low-carbon transition of the power system, which is crucial for achieving the nation′s carbon peak and carbon neutrality goals.