Based on Mysteel's sodium-ion battery cost model, the current cost of NFPP-based sodium-ion cells for energy storage applications is approximately Yuan 0.45/Wh, higher than the Yuan 0.342/Wh for LFP cells, leaving a cost gap of around Yuan 0.11/Wh.
A breakdown of the cost structure reveals that the current difference between sodium and lithium systems comes from cathode/anode materials and manufacturing costs (MFG).
NFPP cathode costs currently stand at around Yuan 0.09/Wh, below LFP cathode costs of approximately Yuan 0.12/Wh, representing a cost advantage of about Yuan 0.03/Wh for sodium systems. The sodium-ion cathode system has long-term cost potential due to its reliance on low-cost resources such as iron, phosphorus, and sodium. However, with the industry still at an earlier stage of commercialization than the mature lithium system, the material-level cost advantage has not yet been fully transmitted to cell-level costs.
In contrast to the cathode, the anode remains the main shortfall in sodium-ion battery cost structure. Sodium-ion batteries primarily use hard carbon anodes. Bio-based hard carbon, derived from materials such as coconut shells and resins, faces challenges including supply instability, difficulties in maintaining consistent product quality, and high raw material costs. At the same time, lower energy density means that sodium-ion batteries require a higher anode loading per Wh.
The future development of industrial-scale routes such as coal-based and petroleum coke-based hard carbon could help shift hard carbon production from a bio-based pathway to a scalable chemical feedstock system. Companies including Shaanxi Coal Group have already begun sample verification for coal-based hard carbon.
Manufacturing costs (MFG) are the primary source of the current cost gap between sodium-ion and LFP batteries.
On a BOM basis, MFG for the NFPP route stands at approximately Yuan 0.15/Wh, compared with around Yuan 0.03/Wh for LFP, a differential of roughly Yuan 0.12/Wh that already exceeds the cost advantage on the cathode side.
The higher MFG reflects that sodium-ion batteries are still in the early stages of large-scale manufacturing, with production line utilization rate, production continuity, and manufacturing experience yet to reach the levels of the mature lithium-ion battery industry.
It is estimated that once sodium-ion market output reaches the 100 GWh level and leading producers approach full capacity, MFG could fall by 30-40%, from its current level of around Yuan 0.15/Wh to approximately Yuan 0.09/Wh, becoming a key enabler of the scale-cost cycle.
This suggests that the core challenge facing the sodium-ion battery industry today is not a lack of cost competitiveness in the material system, but rather that the industry has not yet reached the scale required to unlock manufacturing-level cost advantages.
Industry capacity and operating data confirm this issue. To date, Chinese sodium-ion battery companies have planned and laid out over 100 GWh of capacity, and a relatively complete upstream-downstream industrial chain has taken shape. However, survey data shows that while operating rates at leading producers exceed 90%, the industry-wide average stands at around 30%, with much of the already-built capacity not yet in stable production.
Two Barriers to Scalable Production: Product Fragmentation and Immature Standards
The sodium-ion battery industry has yet to reach product convergence, and single specifications are insufficient to support large-scale manufacturing. Two main technology routes have emerged, layered oxide and polyanion, but companies still differ significantly in material systems, cell structures, and target applications.
Based on publicly disclosed products, current sodium-ion cells show wide dispersion in capacity, voltage platforms, and form factors. Among more than 20 leading sodium-ion producers alone, nearly 100 different cell models have been launched, varying in size, capacity, and technology route.
When the many differentiated models from smaller producers are added, the industry faces severe specification fragmentation. Upstream material suppliers are unable to standardize feedstock inventory, and downstream integrators are forced to customize BMS and structural designs for each cell type. Different cell formats such as cylindrical, prismatic, and pouch have been developed for a range of applications including energy storage, power, and start-stop systems, with capacities spanning from small-format power cells to 100+ Ah storage cells.
Product fragmentation makes it difficult for the sodium-ion battery industry to achieve coordinated scaling. Battery cell producers cannot sustain high-volume production around a limited number of models, and line switching and commissioning costs increase. Upstream material suppliers, meanwhile, cannot build scale around standard products, while downstream customers face higher testing, system adaptation, and verification costs, further eroding industry chain efficiency.
Beyond product specifications, the maturity of the standard system will also determine how efficiently the industry can scale. Sodium-ion battery standards are being developed rapidly. However, compared with the mature lithium-ion system built over decades, the sodium-ion industry is still in a transition from enterprise-defined products to an industry-wide unified evaluation framework.
The current lack of a fully mature standard system has three main effects. First, the absence of a common yardstick for product performance across companies raises downstream selection and verification costs. Second, with technology routes and product specifications yet to converge, it is difficult for upstream and downstream players to build scale around a limited set of standard products. Third, large-scale applications such as energy storage and power still require lengthy validation cycles, slowing product adoption.
As leading producers move into scaled deliveries, market competition is likely to drive a handful of proven products to become de facto industry standards, in turn pulling material systems, equipment, and downstream applications toward a narrower set of mainstream specifications. This will be a critical condition for the sodium-ion battery industry to overcome its current scalability bottlenecks.
