A few hours ago in the heart of Munich, CATL presented Haveits new energy storage system with sodium-ion. This is CATL’s way of offering more flexible facilities, stable over time and, above all, truly profitable for decades.

A modular design makes it easy to scale the storage system

The first thing that catches your attention is its modular architecture. Each unit can exceed 30 MWh capacity, and the individual modules weigh less than 42 tons. That means that to build a large park of 1 GWh Only 34 modules are needed.

What really makes this format special

CATL engineers have made five key improvements that position this system, named Tener, as a very competitive option:

• Impressive lifespan: Can complete 15,000 cycles at room temperature (25°C), which translates into between 25 and 30 years of real service maintaining 70% of your health.
• Works in almost any climate: With its wide thermal range dipole technology, it preserves more than 92% capacity even at -20°C and supports more than 10,000 cycles at 45°C without the need for extra insulation or cooling systems.
• Next level security: Reduces the expansion force of the cells by a 40% and the generation of gases in a 35%. In extreme situations, the surface temperature in the event of thermal runaway remains around 200°Cmuch lower than that of traditional lithium batteries. It is designed to be practically fire and explosion proof.
• More efficient on a daily basis: Thanks to an optimized ventilation and liquid cooling design, own consumption lowers by 1%compared to the 2% usually seen in the industry.
• Kinder to neighbors: Operates alone 65dBten decibels less than conventional systems.

When something fails there is plan B

Another strong point is the bidirectional power conversion system developed by CATL itself. It is specifically adapted to the voltage range of sodium cells (1.5-3.65 V) and allows the output to be stabilized in 690Vimproving round trip efficiency by almost a 2%.

In addition, it incorporates an ultra-fast self-repair capacity and in just a few minutes 350 milliseconds can isolate a problem and restore power to unaffected areas. That dramatically reduces potential losses from outages.

Clear path to commercialization

CATL already has the entire supply chain for sodium-ion batteries consolidated, with mass production of anode and cathode materials.

The practical thing is that CATL’s Tener system is compatible with existing lithium storage platforms, facilitating its adoption without major infrastructure changes. Deliveries in China will start in September 2026. Global expansion would come in 2027.