Battery materials
CATL unveils TENER Sodium, bringing a new chemistry to energy storage
CATL presented a sodium-ion energy storage system in Munich, outlining its modular design and delivery plans. The application also raises new questions for electrode materials and evaluation.
From cell chemistry to an energy storage system
On June 22, 2026, CATL unveiled its TENER Sodium energy storage system in Munich. The company described a modular architecture with more than 30 MWh of rated capacity per system and configurable storage durations.
At the launch, CATL said it planned to begin deliveries in China in September 2026, expected cumulative shipments to reach 1 GWh by the end of 2026, and scheduled international deliveries to begin in June 2027. These were plans and expectations announced at the time.
System design shapes operating conditions
Applying sodium-ion cells to stationary storage involves more than changing the battery chemistry. CATL described bidirectional voltage regulation and a battery management system designed around the voltage characteristics of sodium-ion cells.
Long-term operation, consistency and performance across temperatures create requirements that ultimately need evaluation at cell, system and project level.
What to watch in materials and electrodes
A different cell chemistry invites a fresh assessment of the anode material, binder system, current collector and electrolyte. Slurry stability, coating integrity and interface changes over time are useful starting points for evaluation.
The announcement focused on system architecture and delivery plans; it did not specify the anode material or binder used in the system. Material choices depend on the cell design and validation conditions.