CATL confirmed it will begin delivering its first sodium-ion battery solutions in September 2026, targeting 1GWh annual shipments. Its Tianheng sodium storage system achieves 15,000 charge cycles, significantly outperforming conventional lithium batteries in low-temperature performance and cost control. Industry analysis suggests mass sodium battery adoption could reduce European storage system costs by approximately 30%.
Sodium Battery Mass Production: Why September Matters
CATL has officially confirmed that its first sodium-ion battery solutions will begin customer deliveries in September 2026. The company has set an annual shipment target of 1GWh, primarily targeting energy storage applications.
This timeline is roughly 6 months ahead of industry consensus. Most analysts had previously projected sodium battery commercialization would begin in the first half of 2027. CATL's accelerated schedule suggests that both technical maturity and cost control have crossed the commercialization threshold.
Tianheng Sodium Battery Technical Breakthroughs
CATL's Tianheng sodium battery storage system achieves breakthroughs across multiple key metrics:
Cycle life: Up to 15,000 charge/discharge cycles, 1.5x that of mainstream LFP batteries
Low-temperature performance: Maintains over 80% of rated capacity at -40°C
Cost advantage: At scale, cost per Wh is projected to be 25-35% lower than lithium batteries
Safety: Thermal runaway temperature is over 100°C higher than ternary lithium batteries
Sodium vs Lithium Storage System Comparison
Metric | Tianheng Sodium | Mainstream LFP | Ternary Li-ion |
|---|---|---|---|
Cycle life (cycles) | 15,000 | 8,000-10,000 | 3,000-5,000 |
Low-temp retention (-20°C) | 85% | 65% | 55% |
Cost per Wh (at scale) | $0.06/Wh | $0.08-0.09/Wh | $0.10-0.12/Wh |
Thermal runaway temp | >300°C | 200-250°C | 150-200°C |
European energy storage analysts note that sodium batteries' low-temperature characteristics are particularly valuable for Nordic markets. Winter temperatures in Finland, Norway, and Sweden frequently drop below -20°C, where conventional lithium batteries suffer significant performance degradation.
CATL stated that first-batch sodium batteries will be prioritized for European and North American markets. Through cross-border trade channels like EX1000.COM, Chinese energy equipment exporters can bring sodium battery technology to Central Asian and Russian markets more rapidly, addressing similar extreme cold climate challenges.
