At its 2026 Energy Storage Event, CATL unveiled their new “Tener Sodium” system. The battery manufacturer describes it as the world’s first sodium battery solution for stationary energy storage that has been validated under real-world conditions. According to CATL, preparations for mass production are complete. The first deliveries in China are scheduled to begin in September. The company expects to deliver 1 GWh by the end of 2026. Global commercial deliveries are planned to begin in June of the following year.
“Tener Sodium” is designed for storage applications ranging from one to eight hours. CATL cites a rated capacity of more than 30 MWh. The system is fully modular. Each module weighs 42 metric tons. According to the company, the system can be adapted to different project requirements. It is also said to be dimensionally compatible with lithium-ion battery systems, enabling a seamless transition between the two technologies.
Sodium Battery Focused on Efficiency, Lifespan, and Availability
CATL specifies a lifespan of 15,000 cycles at 25 °C with a state of health of up to 70 percent. This would correspond to a service life of 25 to 30 years. At 45 °C, the system is said to be capable of more than 10,000 cycles. At -20 °C, the system reportedly retains over 92 percent of its capacity.
To ensure operational safety, CATL cites a self-healing function that operates at the millisecond level. Faults are reportedly detected and isolated within 200 milliseconds. Unaffected areas resume operation within 150 milliseconds. CATL also claims that the system can suppress fires and explosions under extreme conditions.
Source:
https://cnevpost.com/2026/06/22/catl-unveils-tener-sodium/
