Sodium-ion battery technology is entering the commercial production phase and emerging as an alternative to lithium-ion batteries, driven by supply chain diversification, strong low-temperature performance, and the potential for lower total cost of ownership. According to an analysis by Wood Mackenzie, supply agreements totaling more than 70 GWh are already in place.

The study, which examines markets in China, the United States, Germany, and India, identifies sodium-ion batteries as the most promising emerging alternative to lithium-based technologies for stationary energy storage. Leading manufacturers are expected to achieve cell-level cost parity with lithium iron phosphate (LFP) batteries by late 2026, while parity at the module and system levels is not expected until after 2030.

China is leading the commercialization of the technology. BYD plans to reach 30 GWh of sodium-ion battery manufacturing capacity, while CATL aims to exceed 1 GWh in sodium-ion battery shipments by the end of 2026.

Supply agreements for sodium-ion batteries are already in place in China, the United States, and Europe, while India remains in the early stages of commercial validation. For the 2026–2035 period, Wood Mackenzie estimates a learning rate of 18% to 20% in China, reflecting the greater maturity of its industrial supply chain.

Planned manufacturing capacity currently exceeds demand, although the growing number of supply agreements points to the technology’s gradual adoption in the market.

Higher upfront costs, lower total cost of ownership

Sodium-ion batteries currently have higher upfront costs than LFP batteries. The global average stands at $229/kWh, compared with approximately $200/kWh for LFP batteries. However, Wood Mackenzie estimates that sodium-ion batteries could achieve a 21% lower total cost of ownership over a 20-year project lifetime.

The difference is primarily attributed to the elimination of capacity expansion cycles and lower operating costs. The economics of sodium-ion systems remain relatively stable across storage durations of two to four hours.

The study identifies raw material supply security, service life, and a wider operating temperature range as key technical advantages of sodium-ion batteries. The latter could make them particularly suitable for applications in cold climates, where lithium-ion batteries may require additional thermal management systems.

Regulation accelerates development

Industrial and trade policies are playing an increasingly important role in the competitiveness of different battery chemistries. In July 2026, China reintroduced a consumption tax on lithium-ion batteries while exempting sodium-ion batteries until the end of 2028. LFP batteries became subject to a 2% levy in September 2026, which is set to increase to 4% in September 2027.

In the United States, tariffs of approximately 58% on energy storage cells imported from China, combined with production tax credits under Section 45X of the Inflation Reduction Act (IRA), are encouraging domestic sodium-ion battery manufacturing.

In Europe, carbon footprint declaration requirements under the EU Battery Regulation could favor technologies with supply chains that are less dependent on certain critical raw materials. Meanwhile, India is supporting domestic manufacturing through a $1.25 billion incentive program and tariff exemptions for certain types of manufacturing equipment.

Wood Mackenzie expects the 2030–2035 period to be decisive for sodium-ion batteries to achieve economic competitiveness. For energy storage projects currently under development, LFP remains the most commercially mature option for storage durations of two to four hours.