CATL sodium-ion Tener specs show how the company is positioning sodium-ion storage for utility-scale use in 2026. In June 2026, CATL launched the Tener sodium-ion energy storage system in Germany. The company described it as the world’s first real-world validated sodium-ion energy storage solution. Moreover, CATL said the product has reached commercial maturity and is ready for scaled production.
This launch matters because it builds on the first Tener system that CATL introduced in April 2024. That earlier version used Lithium-ion chemistry and offered 6.25MWh of capacity. CATL said that system was the world’s first mass-producible energy storage system with zero degradation in the first five years of use. Now, the sodium-ion version expands the Tener platform and gives grid operators another option for large-scale storage.
CATL sodium-ion Tener specs at a glance
The CATL sodium-ion Tener specs center on grid-scale battery energy storage. Most importantly, the system uses sodium-ion chemistry instead of lithium-ion chemistry. CATL launched the product in Germany in June 2026, and the company plans to scale production in China first. In addition, CATL expects shipments of the Tener sodium-ion BESS to reach 1GWh by the end of 2026 in China. After that, global shipping is set to begin in 2027.
These figures signal that CATL is moving beyond a pilot stage. Instead, the company is preparing a commercial rollout with meaningful volume. For developers, integrators, and utilities, that timeline suggests sodium-ion storage is entering a more practical phase.
How CATL sodium-ion Tener specs compare with the first Tener
The first Tener system launched in 2024 and used lithium-ion cells. It came with a stated capacity of 6.25MWh. By contrast, the new sodium-ion Tener focuses less on replacing the original product and more on broadening the chemistry choices within the same product family.
That distinction is important. CATL is not presenting sodium-ion as a niche experiment. Rather, it is placing the chemistry inside an established storage platform. As a result, buyers can view the sodium-ion Tener as part of a growing, commercial product line.
Key figures linked to the CATL sodium-ion Tener specs
• Launch of first Tener: April 2024
• First Tener chemistry: lithium-ion
• First Tener capacity: 6.25MWh
• Sodium-ion Tener launch: June 2026 in Germany
• Expected China shipments by end of 2026: 1GWh
• Global shipping start: 2027
CATL sodium-ion Tener specs and performance claims
One of the most talked-about claims around the new product is its “millisecond-level self-healing.” While CATL has not publicly detailed every mechanism in the provided material, the phrase points to fast system-level response and protection behavior. In practical terms, that suggests the system can detect and respond to internal issues very quickly.
Furthermore, CATL positions the sodium-ion Tener as a mature product for grid applications. The company’s messaging also highlights real-world validation. That phrase matters for project developers because validation can support confidence in deployment readiness.
Why the CATL sodium-ion Tener specs matter for grid storage
The CATL sodium-ion Tener specs arrive at a time when power systems need more flexibility. Data center growth continues to increase electricity demand. At the same time, renewable energy buildout requires more storage to balance supply and demand. Therefore, utilities and developers are looking for battery systems that can support daily cycling, grid services, and backup capacity.
Sodium-ion technology fits well into that conversation. Sodium is abundant, and the chemistry supports broader energy storage diversification. In addition, sodium-ion systems can perform well in lower temperatures. That feature can make them attractive in colder regions where stable battery performance matters.
CATL’s launch also signals stronger momentum for sodium-ion storage in large projects. Because the company expects 1GWh of shipments in China by the end of 2026, the market now has a clearer sign that commercial adoption is accelerating.
What to watch next for CATL sodium-ion Tener specs
Over the next several months, the main points to watch will be deployment scale, customer adoption, and further technical disclosures. If CATL provides more detail on energy density, cycle life, system architecture, or safety design, buyers will be able to compare the sodium-ion Tener more directly with lithium-ion alternatives.
Even so, the current announcement already offers several important takeaways. First, CATL has officially launched the sodium-ion Tener in Germany. Second, the company says the system is commercially mature. Third, CATL expects 1GWh of shipments in China before the end of 2026. Finally, global shipping is scheduled for 2027.
Overall, the CATL sodium-ion Tener specs show a product designed for serious grid-scale use. The launch strengthens sodium-ion’s role in modern energy storage. It also gives the market a clearer view of how major manufacturers plan to expand battery chemistry options in 2026 and beyond.
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