Sodium batteries may be ready for prime time—CATL signs 60 GWh deal

Chinese battery giant CATL has secured a landmark 60 GWh contract with energy storage integrator HyperStrong, marking what is likely the largest commercial deployment of sodium-ion batteries to date. This three-year deal encompasses both research and development as well as project implementation, signalling CATL’s confidence that it has resolved key manufacturing challenges associated with sodium-ion technology. The scale of the contract is significant, representing roughly half of CATL’s total energy storage battery shipments projected for 2025. Sodium-ion batteries offer several advantages over traditional lithium-ion cells, chiefly due to sodium’s abundance and lower cost. While lithium-ion batteries typically provide higher energy density, sodium-ion cells are better suited for applications where cost-efficiency and durability are paramount, such as grid-scale energy storage. CATL’s sodium-ion batteries feature a specific energy of around 160 Wh/kg, a high cycle life exceeding 15,000 cycles at 80% capacity retention, and operate effectively across a wide temperature range from -40°C to 70°C. The company has also designed these cells to match the dimensions of its lithium-ion products, facilitating easier integration into existing supply chains and infrastructure. Beyond stationary energy storage, CATL is beginning to introduce sodium-ion technology into electric vehicles. Earlier this year, the Chinese automaker Changan unveiled the Nevo A06, equipped with a 45 kWh sodium-ion battery pack developed by CATL. This battery delivers a specific energy of 175 Wh/kg and offers an estimated range of 400 km under the Chinese CLTC testing cycle. Other manufacturers, including BYD, are also advancing sodium-ion platforms, with BYD’s third-generation cells reportedly achieving over 10,000 charge cycles. The growing commercial adoption of sodium-ion batteries could have significant implications for the energy storage and electric vehicle sectors. By leveraging the cost and material availability advantages of sodium, manufacturers may reduce reliance on lithium, which is more expensive and less abundant. CATL’s success in overcoming production hurdles and scaling up manufacturing suggests that sodium-ion technology is moving beyond pilot stages into mainstream deployment, potentially reshaping battery supply chains and accelerating the transition to more sustainable energy solutions.