China on verge of banning large-scale ESSs using second-life lithium-ion batteries
Fri, 06/25/2021 - 10:18 -- Paul Crompton
China is on the verge of banning the use of second-life lithium-ion batteries in large-scale energy storage systems (ESS) amid a spate of fires this year.
The halt will continue until a “breakthrough in battery consistency management technology and a sound power battery performance testing and evaluation system” is developed, according to reports from China media group Caixing.
The ceasing of secondary battery use follows the National Energy Administration issued a draft report ‘Regulations for the Management of New Energy Storage Projects’ on June 22.
What capacity constitutes “large-scale” is not clear.
The Caixing report stated: “According to industry sources, there are few energy storage projects that can be called cascade utilization of large-scale power batteries. In addition, the document does not specify the criteria for defining "large-scale" projects.”
The draft also proposes that completed and operating projects should be regularly evaluated and monitored, and supervision should be strengthened.
Cascade utilisation generally refers to using a battery with less than 80% capacity in EESs for commercial and residential, and telecom base station applications.
In January, an explosion at a China recycling plant owned by lithium-ion battery giant Contemporary Amperex Technology (CATL) killed one person and injured 19 more.
In April, two firefighters died when they were putting out a fire in an energy storage power station in Fengtai District of Beijing, according to the China Daily news outlet.
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