CATL, the world’s leading battery manufacturer, continues proving why it’s the best with the biz. Today, the company unveiled a 20-foot-tall energy storage system (ESS) called the TENER Stack, which, according to CATL, offers breakthroughs in storage capacity, deployment flexibility, safety, and transportation efficiency. It also has the energy storage capabilities to charge 150 EVs.

As the undisputed global leader in battery manufacturing, CATL is constantly looking for new and exciting technologies to stay ahead of its competitors. Those innovations span nearly all mobility segments, from electric vehicles to electric planes, chargers, battery swap stations, and energy storage systems.

Just last month, CATL unveiled a new EV battery that could charge as fast as a trip to the gas station. In April 2024, CATL unveiled a 6.25 MWh capacity energy storage system called TENER, promising zero degradation in the first five years of use—the first of its kind.

Today, CATL has unveiled an even more robust version called the TENER Stack. Standing 20 feet tall, this ultra-large capacity ESS offers several key improvements en route to mass production.

CATL’s TENER Stack can power a home for six years

CATL shared details and images of the TENER Stack following a recent unveiling event. The towering energy storage system offers a “world’s first” storage capacity of 9 MWh supported by CATL’s high-energy-density LFP cells.

While the Stack still offers the same five-year zero degradation guarantee as its TENER predecessor, CATL shared that the newer model offers a 45% increase in volume utilization and a 50% increase in projected energy density compared to other systems of its size.

As such, the TENET Stack’s stored energy can charge 150 EVs or power the average German home for six years. Per Amanda Xu, CTO ESS & President of ESS Europe CATL:

CATL has always been at the forefront of the energy transition. To meet the expectation of a BESS system that has high energy density, small footprint, simpler AC-side configuration, and flexible deployment, we bring the latest CATL TENER energy storage solution. It breaks the limitations of power capacity and product transportation, and makes breakthroughs in space utilization, energy efficiency, and cost.

Due to their massive size and weight, ESSs like the TENER can face logistical hurdles, as transport containers must weigh less than 36 tons in many countries. To combat this, CATL has developed a “two-in-one” design in which each half-height unit remains weight compliant, enabling transport across 99% of all global markets.

That’s also where the “stack” term comes in, as this split design can be reassembled at its final destination, enabling the full brunt of its whopping 9 MWh capacity.

The TENER Stack joins the TENER and TENER Flex in a growing lineup of revolutionary energy storage systems to support the ever-increasing demand for global energy needs. It doesn’t appear to have reached the ceiling of its storage technology yet, either. Per Hank Zhao, CTO of ESS Europe CATL:

TENER Stack, giant, flexible, reliable and quiet. We are not only delivering an energy storage product, but a solution for energy accessibility that can be applied globally. 9 MWh is not the limit of the energy capacity or space. Every breakthrough in energy density in the future will unleash greater energy value from a smaller footprint.

The TENER Stack energy storage system is slotted for mass production at CATL ESS Europe in 2025.