Research Status and Development Trend of Gravity Energy Storage Technology

Gravity energy storage is a new type of physical energy storage system that can effectively solve the problem of new energy consumption. This article examines the application of bibliometric, social network analysis, and information visualization technology to investigate topic discovery and clustering, utilizing the Web of Science database (SCI-Expanded and Derwent Innovation Index) as a basis for analysis. These are searched for literatures related to gravity energy storage technology. The objective is to uncover the evolving trends in gravity energy storage technology and offer valuable insights for guiding technical planning and tracking current areas of focus. The results of paper analysis show that the global output of gravity energy storage technology patents and papers continues to grow steadily, which is at the initial stage of commercialization, still needs technological breakthroughs. The topic clustering analysis show that the gravity energy storage technology research has focuses on techno-economic analysis, system modeling and simulation, renewable energy power generation coupled with gravity energy storage, energy management and operational control methods for gravity energy storage, hybrid energy storage system and gravity energy storage technology routes. The results of patent analysis show that more and more new renewable energy generation systems based on gravity energy storage systems have emerged in recent years. The most widely used scenario of gravity energy storage technology is wind power generation system, followed by solar power generation system and ocean power generation system. In addition, there are geothermal, hydro-energy, bioenergy and hydrogen generation system.