This system, designed as a 2-split containerized BESS solution, can be stacked to deliver a cumulative energy storage capacity of up to 9 MWh, according to Spinnen. . On May 7th, 2025, CATL has unveiled the world's first mass-producible 9MWh ultra-large-capacity energy storage system solution, TENER Stack, setting a new industry benchmark with its groundbreaking technology. This innovation marks another milestone for CATL in the energy storage sector, following. . The world's biggest battery maker unveiled its latest utility-scale battery energy storage product- the Tener Stack – at the Smarter E show. The 9 MWh system supports both centralized and string power conversion system architectures, offering flexibility for a range of deployment scenarios.
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