The world's largest liquid air energy storage demonstration project, independently developed and invested by China Green Development Investment Group (CGDG), started construction in Golmud City, Northwest China's Qinghai Province, on July 1.
Liquid air energy storage is an important technology and fundamental piece of equipment for supporting new power systems. It has such advantages as large capacity, long duration, long life, low cost, and no geographical constraints. Compared to traditional energy storage technologies, it occupies a smaller land area, has higher energy storage density, and can be applied in more flexible and diverse scenarios. It particularly excels in the fields of renewable energy accommodation, peak shaving in power grids, backup black starts, supporting distributed power micro-grids, and comprehensive energy services.
The installed capacity of the demonstration project is 60,000 kilowatts/600,000 kilowatt-hours and the project is accompanied by a 250,000-kilowatt photovoltaic project. It adopts ultra-low temperature cascade technology for cold storage with independent intellectual property rights.
After continuous R&D and innovation, the project has obtained more than 100 invention patents, and has upscaled liquid air energy storage systems from 100-kilowatt to 10,000-kilowatt level.
Once completed and put into operation, the project will become the demonstration project with the world's largest generated power and the world's largest energy storage in the field of liquid air energy storage, filling the gap in large-scale long-duration energy storage technology.
It is also important to promote the green transformation of energy, ensure energy security, facilitate high-quality energy development, and achieve goals in addressing climate change.
(Executive editor: Xie Yunxiao)
