Abstract:The achievement of the “dual carbon” goal is closely tied to the widespread implementation of renewable energy, however, renewable energy generation is characterized by intermittency and volatility. Advanced energy storage technology plays a crucial role in mitigating the fluctuations of new energy sources and enhancing their absorption capacity. Patents serve as important indicators of technological innovation, directly reflecting current research trends and future directions in energy storage technology. This paper primarily relies on the “WIPO IP Portal” website provided by the World Intellectual Property Organization to analyze the comprehensive strength of eight leading countries including the United States, China, France, the United Kingdom, Russia, Japan, Germany, and India. The analysis focuses on various energy storage technologies with statistics on patents issued by researchers or institutions from these countries. Additionally, this study examines China's current state of energy storage technology based on authorized patents and explores its future development trends across electric energy storage systems (EESS), mechanical energy storage systems (MESS), chemical energy storage systems (CESS), thermal energy storage systems (TESS), and hydrogen-based energy storage systems (HESS). It concludes that China’s current focus lies in core components or materials research for efficient cost reduction aiming at large-scale commercial applications. Furthermore, how to integrate a variety of energy storage into a system to use renewable energy such as wind and light for power supply and heating will be the focus of interest in the future.