CATL Launches TENER: The World's First 9MWh Ultra-High Capacity Energy Storage Solution

CATL Introduces Revolutionary TENER Energy Storage Solution

At the ees Europe 2025 exhibition, CATL has unveiled the TENER Stack, a pioneering 9MWh ultra-high-capacity energy storage solution. This innovative system is designed to address the surging global demand for energy, catering to various sectors, including AI-powered data centers and industrial electrification. The TENER Stack promises to enhance economic value for infrastructure developers by maximizing the efficiency of energy deployments.

A Major Leap in Energy Storage Technology

Amanda Xu, the Technical Director of Energy Storage System (ESS) at CATL, emphasizes that the company is at the forefront of energy transition. The TENER Stack meets the demanding expectations for a battery energy storage system (BESS) that combines high energy density and easy deployment. With a focus on overcoming current limitations regarding power capacity and transport, TENER promises to optimize space usage, energy efficiency, and operational costs.

Breakthrough in Capacity and Efficiency

The TENER Stack features CATL’s high-energy-density cells and utilizes a five-year zero-degradation technology. This results in a staggering 45% increase in space utilization and a 50% improvement in energy density compared to conventional twenty-foot container systems. With an internal capacity of 9MWh, it can charge up to 150 electric vehicles or power an average German household for up to six years.

Furthermore, the TENER Stack supports both centralized and chain architectures of energy conversion systems (PCS). This dual technological approach ensures seamless integration with standard devices and a broad range of grid applications.

Maximizing Space and Cost Efficiency

Space efficiency is a critical advantage of the TENER Stack, offering significant economic benefits. For instance, deploying 800 MWh of storage with TENER requires nearly one-third fewer containers than traditional 6MWh systems. This drastically reduces the number of PCS units required, which minimizes hidden costs linked to system oversizing and improves land use efficiency by 40%. Developers can anticipate up to a 20% reduction in the overall costs of station construction.