For the past decade, Lithium Iron Phosphate (LFP) batteries have dominated the energy storage and EV battery market with their safety, long cycle life, and cost-effectiveness. In April 2026, LFP battery installations reached 50.8GWh, accounting for 81.5% of the monthly total — a record high. BYD chairman Wang Chuanfu stated bluntly: "LFP is BYD's ballast stone."

However, 2026 is becoming a watershed year for the reshaping of the battery industry landscape. Sodium-ion batteries (SIB) are accelerating from laboratories to mass commercialization at an unprecedented pace. They will not completely replace LFP, but are destined to become another major technological pillar alongside lithium batteries.

As Wu Dianfeng, CTO of CATL's energy storage division, noted: "Sodium resources are globally distributed and abundant. Combined with their wide temperature range and long lifespan, they are destined to form the two cornerstones of the next-generation energy storage system together with lithium."

Analysis: LFP still holds a slight advantage in energy density, but sodium-ion has already surpassed it in cycle life (improved from 1,000–2,000 to over 10,000 cycles), low-temperature performance (maintaining over 88% capacity at -40℃), and fast-charging capabilities. Sodium-ion batteries also offer better thermal stability, making them less prone to thermal runaway and explosion

Cost was once sodium-ion's biggest weakness, but this is being rapidly rewritten:

: Sodium-ion cell fully loaded cost: RMB 0.33–0.42/Wh; LFP: RMB 0.33–0.34/Wh

: Sodium-ion cell cost dropped to RMB 0.35–0.40/Wh, with the gap to LFP narrowing to within RMB 0.1/Wh

: Northeast Securities expects cost parity by end of 2026 to 2027; Bernstein expects sodium-ion costs to fall below LFP in 2027, ultimately achieving a $15–20/kWh cost advantage over LFP

: Material-side large-scale production can reduce costs by RMB 0.06–0.07/Wh, while yield improvement can bring another RMB 0.01–0.02/Wh reduction

More critically — LFP has undergone over a decade of iteration, leaving little room for further cost reduction; sodium-ion's cost reduction curve is just beginning.

On July 16, 2026, the Ministry of Finance, General Administration of Customs, and State Taxation Administration jointly issued the "Announcement on Adjusting the Consumption Tax Policy for Certain Batteries" (Announcement No. 20 of 2026):

: Sodium-ion batteries, solid-state batteries, fuel cells, and perovskite, tandem, and gallium arsenide photovoltaic cells are fully exempt from consumption tax

: Lithium-ion batteries and vanadium flow batteries will be taxed at 2% from September 1, 2026, rising to 4% from September 1, 2027

This significant tax burden gap will directly reduce the end-user cost of sodium-ion batteries and accelerate their substitution for lead-acid and lithium batteries. The tax exemption window covers the critical phase of sodium-ion's scale-up — 2026 is seen by the industry as the inflection point for sodium-ion industrialization, and the policy boost will effectively increase profit margins, benefiting capacity release and order fulfillment

2026 is defined by the industry as the "first year of mass production" for sodium-ion batteries. The following data illustrate the trend:

Market share forecast (SPIR "2026 Global Sodium-ion Industry White Paper"): In 2026, sodium-ion batteries will account for 50% of the energy storage market, 20% of the new energy vehicle market, and 15% of the start-stop battery market

Major players accelerating:

: Released second-generation "Naxtra" battery in April 2026, with mass production scheduled for Q4; signed a 3-year, 60GWh sodium-ion order with Hyperstrong

: Building 30GWh sodium-ion battery production capacity in Xuzhou

: Launched sodium-ion battery brand "GNASCENT," with high-energy version reaching 261Wh/kg

: Sodium-ion products achieve over 20,000 cycles at 1P rate

In addition, EVE Energy, Penghe Energy, and Zhongke Haina have also achieved sodium-ion mass production capabilities

Sodium-ion's advantage scenarios:

: With ultra-long cycle life (15,000+ cycles), wide temperature range (-45℃ to 80℃), and high safety, ideal for grid-scale energy storage

: Over 90% capacity retention at -40℃, solving winter range issues in northern regions

: Low cost + high performance, enabling large-scale replacement of lead-acid batteries

: AIDC energy storage has broad prospects

LFP's stronghold:

VII. Challenges and Outlook

Sodium-ion batteries still face two major challenges: overall energy density remains slightly lower than LFP; and the supply system for key materials such as hard carbon anodes is not yet fully mature. Hard carbon prices remain high, and sodium hexafluorophosphate consumption per unit is several times that of lithium batteries. After-level hard carbon production capacity is deployed, prices are expected to drop from RMB 32,000–47,500/ton to below RMB 30,000/ton.

But this is precisely where the opportunity lies — with multiple万吨-level sodium-ion material production lines coming online, sodium-ion costs will catch up with lithium batteries. From the "absolute dominance" of LFP to the divergence of new technology pathways, the future landscape of the battery industry is being redrawn

2026 is the first year of this reshaping. "Lithium-sodium complementarity, scenario differentiation" — this will be the ultimate picture of the battery industry over the next decade.

As Lin Jiubiao, CTO of CATL's domestic energy storage solutions, put it: sodium-ion batteries have entered the era of comprehensive productization. For energy storage industry practitioners, sodium-ion is no longer a "future concept" — it is already a commercial choice within reach.