CATL launches TENER, world's first field-validated sodium-ion grid storage with 15,000 cycles

CATL/TENER Sodium-Ion Grid Storage System

CATL unveiled TENER, a field-validated sodium-ion grid storage system at an international conference in Munich. The system features 15,000 cycles at 25°C with 25-30 year lifespan, operates reliably at -20°C with 92% capacity retention, and offers inherent safety advantages. Modules deliver 30+ MWh each. Deliveries to China begin September 2026, with global expansion in 2027.

• TENER is the world's first field-validated sodium-ion battery storage system proven in real-world conditions before commercial launch.
• 15,000 cycles at 25°C with 25-30 year system lifespan makes TENER economically competitive with lithium-ion for grid storage.
• Wide-temperature operation (-20°C to 45°C) enables deployment in regions where lithium-ion requires active cooling systems.
• CATL has 40 GWh sodium-ion production capacity at Fuding and plans 160 GWh capacity at Jining to supply growing demand.