CATL unveils mass-producible 9MWh energy storage system solution

Shanghai (Gasgoo)- On May 7, CATL launched the TENER Stack at the EES Europe in Munich, marking the unveiling of the world's first mass-producible 9MWh ultra-large-capacity energy storage system soultion, according to a press release of CATL.

The company said the launch represents a significant leap in system capacity, deployment flexibility, safety, and transport efficiency—signaling the start of a new era in large-scale energy storage technology.

TENER Stack is powered by CATL's high-energy-density battery cells. Compared to traditional 20-foot container systems, it boasts a 45% increase in space utilization and a 50% boost in energy density. With a single-unit capacity of 9MWh, the system can charge approximately 150 electric vehicles or power a typical German household for six years.

The high capacity of TENER Stack also delivers substantial economic benefits. Deploying 800MWh of storage capacity with TENER Stack requires nearly one-third fewer containers than conventional 6MWh systems. This improvement increases land-use efficiency by 40% and reduces overall power station construction costs by 20%.

To comply with the 36-tonne legal road transport limit enforced in many countries, CATL developed a modular "Two in One" design, keeping each half-height container under the threshold weight—ensuring compatibility with regulations in 99% of global markets.

An innovative split design further enhances logistical efficiency by accommodating multiple standard transportation modes, reducing lead times, and cutting special transport costs by 35%. With a lower center of gravity and enhanced maneuverability, TENER Stack can navigate bridges and rural roads with ease, underscoring the advantages of its structural innovation.

Amid growing concerns around safety in energy storage applications, TENER Stack increases gas sensor sensitivity by 40%, which in turn accelerates system suppression response time by 35%.

A new triple-layer insulation design boosts fire resistance to two hours. The system also meets IEEE 693 seismic standards, enabling it to withstand magnitude 9 earthquakes and category 5 hurricanes.

As of the end of November last year, CATL's energy storage systems had been deployed in over 1,700 projects worldwide, operating across diverse climates and conditions.