Sodium-Ion Batteries Gain Commercial Momentum With 70 GWh Supply Agreements As Lithium Alternative

Sodium-ion batteries (SIB) are gaining commercial momentum as an emerging alternative to lithium-ion battery technology, supported by growing supply agreements, improved supply chain security and strong performance in extreme temperature conditions. According to a new analysis by Wood Mackenzie, the technology is entering commercial production, with more than 70 GWh of supply agreements secured, indicating increasing confidence among battery manufacturers and downstream customers.

The report, titled ‘Sodium-ion batteries: commercialization begins, economics to follow’, examines market developments across China, the United States, Germany and India. It identifies sodium-ion batteries as one of the most cost-effective emerging alternatives to lithium-ion battery storage, although achieving full cost competitiveness will take time. The analysis expects leading manufacturers to achieve cell-level cost parity with lithium iron phosphate (LFP) batteries by the end of 2026. However, parity at the module and complete system levels is expected only after 2030.

Wood Mackenzie highlighted supply chain security, longer cycle life and wider operating temperature ranges as major advantages of sodium-ion technology. These benefits are supporting its early commercialization, particularly as battery manufacturers and energy storage developers look to diversify supply chains and reduce dependence on lithium-based materials.

Ankita Chauhan, Director, Global Supply Chain and Integrated Power & Renewables Research at Wood Mackenzie, said sodium-ion batteries offer advantages in supply chain security, cycle life and temperature performance. She noted that geopolitical supply advantages and the technology’s ability to operate across wider temperature ranges are driving its near-term commercialization.

China is currently leading the development of sodium-ion battery manufacturing, with major companies announcing significant capacity expansion plans. BYD has planned 30 GWh of manufacturing capacity in China, while CATL is targeting at least 1 GWh of sodium-ion battery shipments by the end of 2026. These developments reflect the growing interest of established battery manufacturers in commercializing alternative battery chemistries.

China, the United States, and Europe have already secured significant offtake agreements, while India remains at an early stage of commercial validation. According to Wood Mackenzie, China is expected to record a learning rate of 18–20% between 2026 and 2035, reflecting its manufacturing experience, production expansion and commercialization efforts.

Although sodium-ion batteries currently involve higher upfront costs than LFP batteries, their lifetime economics offer potential advantages. The global average cost of sodium-ion batteries stands at approximately $229 per kWh, compared with $200 per kWh for LFP batteries. Despite this difference, sodium-ion technology can deliver a 21% lower total cost of ownership (TCO) over a 20-year project life.

The lower lifetime cost is mainly associated with the potential elimination of battery augmentation requirements and reduced operating expenditure. The report also indicates that system economics remain relatively stable across storage durations of two to four hours. However, regional supply chain limitations, trade barriers and manufacturing challenges could affect the pace of deployment.

Several market-specific challenges remain. China’s export controls, India’s underdeveloped sodium-ion supply chain, slower gigafactory expansion in the United States, and Germany’s trade policies could restrict near-term market growth. Building manufacturing capacity, improving material availability and developing reliable supply networks will therefore remain important for the technology’s expansion.

Government policies are also playing an important role in supporting sodium-ion battery commercialization. In China, the reintroduction of a consumption tax on lithium-ion batteries in July 2026 includes an exemption for sodium-ion batteries until the end of 2028. Meanwhile, LFP batteries face a 2% levy from September 2026, increasing to 4% from September 2027.

In the United States, Section 301 tariffs of approximately 58% on Chinese energy storage cells are encouraging domestic manufacturing of alternative battery technologies. These measures are complemented by manufacturing incentives under the Inflation Reduction Act’s 45X tax credit programme. In Europe, carbon-footprint disclosure requirements under the EU Battery Regulation are creating additional opportunities for sodium-ion battery manufacturers.

India is also taking steps to develop its domestic battery manufacturing ecosystem through a $1.25 billion incentive scheme and duty exemptions on manufacturing equipment. However, establishing a competitive local supply chain and validating the technology for commercial applications remain important priorities.

Priya Shrivastava, Senior Research Analyst, Power & Renewables, Battery Storage Supply Chain at Wood Mackenzie, said the period between 2030 and 2035 would be important for a significant shift in battery economics. She noted that LFP remains the preferred and commercially established option for two-to-four-hour energy storage projects being deployed today.

While sodium-ion technology provides manufacturers with an additional battery chemistry option, it still needs to overcome challenges related to scaling production, improving cell materials, and demonstrating consistent long-term performance.

The report suggests that the future battery market is unlikely to depend on a single technology. Instead, lithium-ion and sodium-ion batteries are expected to serve different applications based on cost, performance, operating conditions, and storage duration. As manufacturing capacity expands and technology improves, sodium-ion batteries could become an increasingly important part of the global energy storage market.