Chinese battery maker CBAK Energy plans to build 12 GWh of annual battery capacity in Nanjing, with new lines capable of producing large cylindrical sodium-ion or lithium-ion cells.
The Nasdaq-listed company has signed an investment agreement with the Nanjing Gaochun Economic Development Zone for the project, which will also include research and development as well as battery module and pack integration.
CBAK plans to advance the 12 GWh project in the second half of 2027, although construction and production will depend on securing financing, customer demand and project readiness. The company has not disclosed the project’s investment cost.
The expansion comes as CBAK tests sodium-ion battery samples with customers for residential and portable energy storage and electric mobility. Its cells are also being evaluated for specialty vehicles, automotive start-stop systems and backup power.
A key feature of the planned factory is manufacturing flexibility. CBAK says its production lines will be designed to make either large cylindrical sodium-ion or lithium-ion cells, allowing it to choose the chemistry according to market conditions and customer demand.
The company estimates the 12 GWh project could generate RMB4.8 billion to RMB5 billion ($712 million to $741 million) in annual revenue if it operates at full capacity and sells all its output.
That estimate, however, is based on current lithium-ion cell market prices and does not represent contracted sales. Actual revenue will depend on factors including product mix, pricing, manufacturing yields and capacity utilization.
The sodium-ion project is separate from another expansion already planned at CBAK’s existing Nanjing plant.
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