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China has activated the first phase of the Datang Hubei Sodium Ion project, a massive undertaking to build sodium-ion energy storage systems. This impressive facility boasts a capacity of 100 MW/200 MWh, with one installation already connected to the grid in Qianjiang, Hubei Province.
Currently, this is the world’s largest energy storage installation using sodium-ion batteries. The system comprises 42 energy storage containers and 21 converters, featuring 185 Ah sodium-ion batteries and a 110 kV transformer.
Sodium-ion batteries offer up to 85% charging efficiency at temperatures as low as -20°C and can endure up to 1500 charge and discharge cycles at +60°C. They are also more resilient to environmental impacts and physical shocks. The Datang Hubei Sodium Ion system can operate at a frequency of up to 300 cycles per year.
A full charge of the installations provides up to 100,000 kWh of electricity during peak demand. At this capacity, the station can power up to 12,000 households while reducing carbon dioxide emissions by 13,000 tons annually.
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