Sodium-ion batteries gain ground as a lithium alternative thanks to supply chain diversification and cold-weather performance

Sodium-ion batteries are transitioning into commercial production, with supply agreements now exceeding 70 GWh. This volume underscores end-user confidence in the technology, according to a new analysis by Wood Mackenzie.

The report, titled “Sodium-Ion Batteries: Commercialization Begins, Economic Competitiveness to Follow,” examines markets in China, the United States, Germany, and India. It concludes that sodium-ion batteries are establishing themselves as the most cost-competitive emerging alternative to lithium-ion battery storage.

Sodium-ion batteries are transitioning from a technical concept to a commercial reality. IDTechEx forecasts that the global market value for sodium-ion batteries will expand to reach $18 billion by 2037.

The report indicates that leading manufacturers could achieve cost parity with lithium iron phosphate (LFP) batteries at the cell level by the end of 2026. However, cost equivalence at the module and system levels is not expected to materialize until after 2030.

“Sodium-ion batteries stand out for the security of their supply chain, their cycle life in charge and discharge operations, and their wide thermal operating range,” said Ankita Chauhan, Director of Global Supply Chain Research and Integrated and Renewable Energy at Wood Mackenzie. “Geopolitical advantages in supply and superior performance across various temperature ranges are driving their short-term commercialization.”

Sodium-ion batteries are establishing themselves as a viable alternative to lithium, driven by the diversification of the supply chain and their superior performance in cold climates.

China currently leads the market, with manufacturing capacity that exceeds current demand.

Wood Mackenzie reports that BYD is set to establish a manufacturing capacity of 30 GWh in China. Meanwhile, CATL aims to ship at least 1 GWh of sodium-ion batteries by the end of 2026.

CATL, the world’s largest battery manufacturer, has outlined its strategy for sodium-ion batteries, projecting that between 10,000 and 20,000 electric vehicles will be equipped with this technology in the current year. The company positions sodium-ion as a complementary solution to lithium, specifically targeting urban cars, fleet operations, and markets characterized by cold climates.

China, the United States and Europe have already secured significant purchase and supply agreements, while India remains in an early stage of commercial validation.

China’s learning rate, estimated at 18% to 20% for the 2026–2035 period, is the most advanced in the sector and reflects the commercialization ambitions of leading manufacturers.

Higher upfront capital outlay, but lower total cost of ownership over the battery's operational lifespan

Sodium-ion batteries demand a higher initial capital outlay. The global average cost for these cells stands at $229 per kilowatt-hour, compared with $200 per kilowatt-hour for lithium iron phosphate (LFP) batteries. Despite the upfront premium, the total cost of ownership (TCO) is 21% lower.

This economic advantage over the 20-year operational lifespan of a project stems from the elimination of capacity expansion or replacement requirements, coupled with reduced operational expenses.

Sodium-ion batteries are emerging as a credible alternative to lithium-based systems, a development driven by the diversification of the supply chain and the technology’s proven performance in cold climates.

According to a report from the International Renewable Energy Agency, the cost of sodium-ion batteries could fall to $40 per kilowatt-hour.

The economics of these systems remain relatively stable in installations with storage durations ranging from two to four hours. However, regional supply chain constraints and trade barriers continue to pose short-term obstacles to their deployment.

Specifically, China’s export controls, the underdeveloped nature of India’s supply chain, the slow expansion of U.S. gigafactories, and German trade policies could hinder short-term growth in several key markets.

Industrial and regulatory policies are increasingly outweighing cost considerations as the primary drivers of market dynamics.

Public policy is emerging as a decisive factor in the expansion of this technology.

In China, the reinstatement of a consumption tax on lithium-ion batteries in July 2026 explicitly exempts sodium-ion batteries until the end of 2028. Conversely, LFP batteries will face a 2% levy starting in September 2026, which will rise to 4% in September 2027.

In the United States, Section 301 tariffs of approximately 58% on Chinese cells intended for energy storage structurally favor domestic production of sodium-ion batteries. This is further supported by manufacturing tax incentives outlined in the IRA 45X program.

In Europe, the carbon footprint disclosure requirements set by the European Battery Regulation serve as a favorable factor for this technology. Meanwhile, India is promoting the development of its own industrial capacity through a $1.25 billion incentive program and tariff exemptions for the import of manufacturing equipment, according to Wood Mackenzie.

The period between 2030 and 2035 will mark the point at which economic advantages decisively shift in favor of sodium-ion technology, according to Priya Shrivastava, a senior analyst at Wood Mackenzie specializing in energy and renewables research and the battery storage supply chain.

For projects currently being developed, lithium iron phosphate (LFP) batteries remain the most established and financeable option for installations requiring storage durations of two to four hours.

While sodium-ion batteries provide manufacturers with a strategically valuable alternative, the technology still faces significant hurdles, including the need to scale up production, refine cell materials, and demonstrate a consistent track record of performance.

The analysis concludes that the most likely scenario is the consolidation of an energy storage market where multiple battery technologies coexist, each optimized for specific applications and varying storage duration requirements.