On September 25, Harbin Electric Corporation independently developed an ultra-high-temperature and high-capacity compressed carbon dioxide electrothermal energy storage technology, completed the construction of the world’s first megawatt-scale compressed CO2 electrothermal energy storage pilot system, and successfully passed comprehensive testing and verification.
The project successfully achieved breakthroughs in key technical bottlenecks, including ultra-high-temperature CO2 compressors and expanders, bringing the technology to an internationally leading level and marking now ready for engineering application.
The ultra-high-temperature, high-capacity compressed CO2 electrothermal energy storage technology features multiple system configurations, including electricity only and combined cooling, heating, and electricity supply. By effectively utilizing multi-grade waste heat, it enhances electricity-to-electricity conversion efficiency. The technology is widely applicable to long-duration physical energy storage deployment across diversified scenarios on the power generation side, grid side, and load side. It can effectively improve the operational flexibility of power systems and help to enhancing the capacity for renewable energy consumption.
