CATL and Intilion Deploy 3 GWh Sodium-Ion Storage in Europe, Solid-State Stays a 2030 Horizon

Commercial Sodium-Ion Storage Is Already Shipping

The world's largest battery maker moved sodium-ion energy storage from pilot projects to commercial deployment in 2026. CATL signed a memorandum of understanding with Germany's Intilion to deploy up to 3 GWh of sodium-ion storage systems across European grid-scale and commercial projects over five years. The first CATL systems are already shipping domestically this year, with international deliveries expected to begin in June 2027.

CATL unveiled its Tener Sodium product in June 2026, describing it as the world's first field-validated sodium-ion energy storage solution. The system pairs CATL's Naxtra sodium-ion cells — which reach up to 175 watt-hours per kilogram — with grid-scale power conversion equipment. Sodium-ion chemistry avoids lithium, cobalt, and nickel entirely, relying instead on abundant raw materials such as sodium and iron phosphate.

CATL expects cumulative sodium-ion storage shipments to reach 1 GWh by the end of 2026. A separate supply agreement with HyperStrong covers 60 GWh over three years. Those numbers matter because they signal that sodium-ion is no longer a laboratory curiosity — it is entering volume production at grid scale.

CATL's Naxtra Cells: From Lab to Production Line

CATL's Naxtra sodium-ion batteries achieve up to 175 Wh/kg, closing the gap on conventional lithium iron phosphate cells while eliminating lithium from the supply chain. The cells use a Prussian white cathode material and a hard carbon anode, a chemistry choice that trades some energy density for cost stability and thermal safety.

In July 2026, EVTank's sodium-ion industry white paper reported that China's sodium-ion battery shipments had already surpassed 8 GWh annually across all applications. CATL's Naxtra cells are being deployed in both electric vehicles and energy storage systems. For the vehicle segment, CATL has integrated Naxtra into its Qilin battery architecture, demonstrating that sodium-ion can fit existing pack designs without fundamental redesign.

The production ramp is real. CATL's Ningde and Yibin facilities are running sodium-ion lines alongside lithium-ion output. The company has stated that sodium-ion production capacity will reach "tens of gigawatt-hours" by the end of 2027, a scale that would make it a material contributor to global cell supply.

Policy and Pricing: The Economics That Favor Sodium-Ion

China's shifting economics are accelerating the sodium-ion push. Lithium carbonate prices surged above $25,000 per tonne in early 2026, widening the cost gap between lithium-ion and alternative chemistries. At the same time, China exempts sodium-ion and solid-state batteries from a new 2% battery consumption tax that applies to conventional lithium-ion cells through the end of 2028.

A tender in Renqiu, Hebei province illustrated the price disparity directly: sodium-ion systems bid at roughly $153 per kilowatt-hour in the same project where lithium iron phosphate (LFP) cells cleared at about $79 per kilowatt-hour. The gap reflects both material costs and manufacturing maturity — LFP has years of scale behind it, while sodium-ion lines are just ramping.

However, sodium-ion's total cost of ownership can compete in specific use cases. The chemistry's wider operating temperature range and lower fire risk reduce balance-of-plant costs for thermal management and fire suppression. In cold-climate grid storage — a major European application — sodium-ion retains capacity better than LFP below freezing, which can narrow the effective cost gap over a full project lifetime.

Solid-State Progress: 20 Ah Trials, 2030 Mass Production

CATL's solid-state program is advancing on a longer horizon. The company's sulfide-based all-solid-state batteries have entered 20 Ah trial production, targeting an energy density of 500 Wh per kilogram. CATL Chairman Robin Zeng has described all-solid-state development as reaching "level four on a scale of one to nine," acknowledging that stable contact between solid components remains a technical challenge.

Small-scale production is expected to begin in 2027, with mass production not arriving until around 2030. By that measure, solid-state batteries are a decade-long investment rather than a near-term supply story. Toyota aims to launch its first solid-state battery EV in 2027 or 2028, while Samsung SDI targets mass production of its SolidStack cells in the second half of 2027 — still limited volumes before any broad commercialization.

The sulfide electrolyte approach offers high ionic conductivity and deformability, which helps maintain interface contact during cycling. But the sensitivity of sulfide to moisture and the need for high-pressure stacking add manufacturing complexity. CATL has been explicit that the gap between trial production and affordable mass production is where most battery programs stall.

Europe's Storage Demand Creates the Opening

Europe's grid storage market is growing faster than lithium-ion supply can comfortably meet. ResearchAndMarkets projects the Europe battery energy storage system market will expand from $21.56 billion in 2025 to $75.08 billion by 2034, a compound annual growth rate of 14.87%. Major projects already under way include Saft's 122 MWh deployment for Axpo in France and Copenhagen Infrastructure Partners' 350 MW / 1,400 MWh Kilmarnock South project in Scotland.

Those projects use lithium-ion today because it is the available technology. But the scale of demand means utilities are actively evaluating alternatives. Sodium-ion's cost structure and safety profile make it a natural fit for stationary storage where energy density is secondary to cost per cycle and operational safety.

Intilion, as a German system integrator, provides the local engineering, permitting, and grid-connection expertise that CATL lacks in Europe. The partnership model — Chinese cell supplier, European system integrator — mirrors the approach that brought LFP into European commercial storage at scale.

Two Timelines, One Market

The two technologies serve different timelines. Sodium-ion cells ship today at commercial scale, suited for stationary storage and entry-level electric vehicles where energy density matters less than cost and safety. Solid-state batteries promise the energy density needed for long-range EVs, but the path from 20 Ah trial cells to affordable mass production is measured in years, not months.

CATL's own assessment frames the reality plainly: small output at first, with broader market penetration after 2030. For the rest of this decade, sodium-ion fills the gap — lowering cost for grid storage, easing pressure on lithium supply chains, and giving European utilities a field-proven alternative chemistry before the first all-solid-state cells leave a factory line.

The commercial logic is straightforward. Storage developers need cells they can buy today. Sodium-ion is the only non-lithium chemistry that has already crossed the threshold from announcement to shipped product at gigawatt-hour scale. Solid-state will arrive when the engineering is solved, not on a marketing schedule.

References

• CATL, "CATL Supplies 3 GWh of Energy Storage Systems to INTILION in Europe," press release, October 2026.
• CATL, "Naxtra Battery Breakthrough & Dual-Power Architecture," CATL product announcement, April 2025.
• Electrek, "CATL pushes ahead 20 Ah solid-state EV batteries, aims for 500 Wh/kg," October 28, 2026.
• Reuters, coverage of Benchmark Mineral Intelligence Q3 2026 battery cell pricing analysis.
• EnergyTrend, "CATL: All-Solid-State Batteries Expected to Enter Small-Scale Production," October 2026.
• ResearchAndMarkets, "Europe Battery Energy Storage System Market Analysis 2026-2034," GlobeNewswire, October 19, 2026.
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