CATL Launches World's First 9MWh Ultra-Large Capacity TENER Stack Energy Storage System Solution

Landmark innovation pairs high capacity with flexible transport, redefining large-scale energy storage

MUNICH, May 7, 2025 /PRNewswire/ -- CATL today unveiled the TENER Stack, the world's first 9MWh ultra-large capacity energy storage system solution set for mass production at ees Europe 2025, representing a strategic leap forward in capacity, deployment flexibility, safety, and transportability.

In response to fast-growing global energy demands, from AI-driven data centres to industrial electrification, TENER Stack is engineered to help utilities, developers, and industrial users unlock greater economic value from every square metre of installation.

"CATL has always been at the forefront of the energy transition," said Amanda Xu, CTO ESS & President of ESS Europe CATL. "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."

Breakthrough Capacity And AC-Side C ompa tibility

TENER Stack incorporates CATL's high-energy-density cells with five-year zero degradation technology, achieving a 45% improvement in volume utilisation and a 50% increase in projected energy density compared to conventional 20-foot container systems. The internal capacity reaches up to 9MWh, which is adequate to charge 150 electric cars or power an average German household for six years.

To enhance compatibility and system efficiency, TENER Stack supports both centralised and string PCS (Power Conversion System) architectures. This dual-technology path ensures seamless integration with mainstream AC-side equipment and a wider array of grid applications.

The superior space efficiency of TENER Stack delivers significant economic value. For instance, deploying 800 MWh of storage using TENER Stack requires nearly one-third fewer containers than traditional 6 MWh systems. This reduces the number of PCS units and hidden costs associated with system oversizing, and increases land-use efficiency by 40%. Overall, developers can expect up to 20% optimisation in total station construction costs.

Transport Without Compromise

In response to logistical challenges associated with transporting containers exceeding 36 tonnes, the legal threshold in many countries, CATL has developed the "two in one" design. Each half-height unit is strictly controlled under 36 tonnes, ensuring compliance with transport regulations across 99% of global markets.

This innovative split design allows for standard shipping methods, including standard container spreaders and liners, significantly reducing waiting times and specialised transport costs by up to 35%. With a lower centre of gravity and flexibility for height-restricted routes, TENER Stack can easily adapt to unique transport scenarios such as bridges and rural areas, highlighting the advantages of its innovative structural design.

Advanced Safety Standards and Thermal Management

With fire safety under global scrutiny, TENER Stack leverages CATL's robust LFP battery chemistry, known for its inherent thermal stability. Upgraded gas sensors offer 40% higher sensitivity, triggering suppression systems 35% faster. A new triple-layer insulation design boosts fire resistance to two hours and the system meets IEEE693 seismic standards, enduring magnitude 9 earthquakes and Category 5 hurricanes.

Additionally, an overhead TMS (Thermal Management System) design reduces thermal radiation, cuts land and maintenance costs, and keeps noise to 65dB(A) at one metre which is ideal for urban use.

Not Just Batteries, But an Energy Vision

By the end of November 2024, CATL's ESS products were deployed in over 1,700 projects across the world, spanning all climate zones and operating environments. In 2023, recognizing the evolving and changing needs of the customers, CATL unveiled TENER, a twenty-foot equivalent unit (TEU) containerized energy storage system with 5-year zero degradation technology, and TENER FLEX, a rack energy storage system for flexible deployment.

TENER Stack builds on the proven performance of CATL's TENER and TENER FLEX series, combining the benefits of previous models with new levels of capacity and transportability. With TENER Stack, CATL reinforces its commitment to helping global partners accelerate the energy transition, delivering more power in less space, safely and sustainably.

"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," said Hank Zhao, CTO of ESS Europe CATL. "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."

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** The press release content is from PR Newswire. Bastille Post is not involved in its creation. **

CATL Launches World's First 9MWh Ultra-Large Capacity TENER Stack Energy Storage System Solution

CATL Launches World's First 9MWh Ultra-Large Capacity TENER Stack Energy Storage System Solution

CATL Launches World's First 9MWh Ultra-Large Capacity TENER Stack Energy Storage System Solution

ARMONK, N.Y., Dec. 29, 2025 /PRNewswire/ -- The following is the text of an email sent today to all IBM employees by Chairman and CEO Arvind Krishna:

IBMers, 

I am saddened to share that Lou Gerstner, IBM's Chairman and CEO from 1993 to 2002, passed away yesterday.

Lou arrived at IBM at a moment when the company's future was genuinely uncertain. The industry was changing rapidly, our business was under pressure, and there was serious debate about whether IBM should even remain whole. His leadership during that period reshaped the company. Not by looking backward, but by focusing relentlessly on what our clients would need next. 

One of Lou's earliest signals as CEO has become part of IBM lore. Early on, he stopped a long internal presentation and said, simply, "Let's just talk." The message was clear: less inward focus, more real discussion, and much closer attention to customers. That mindset would define his tenure. 

Lou believed one of IBM's central problems was that we had become optimized around our own processes, debates, and structures rather than around client outcomes. As he later put it, the company had lost sight of a basic truth of business: understanding the customer and delivering what the customer actually values. 

That insight drove real change. Meetings became more direct. Decisions were grounded more in facts and client impact than in hierarchy or tradition. Innovation mattered if it could translate into something clients would come to rely on. Execution in the quarter and the year mattered, but always in service of longer-term relevance. 

Lou made what may have been the most consequential decision in IBM's modern history: to keep IBM together. At the time, the company was organized into many separate businesses, each pursuing its own path. Lou understood that clients didn't want fragmented technology—they wanted integrated solutions. That conviction shaped IBM's evolution and reestablished our relevance for many of the world's largest enterprises. 

Lou also understood that strategy alone would not be enough. He believed lasting change required a shift in culture—in how people behave when no one is watching. What mattered was what IBMers valued, how honestly they confronted reality, and how willing they were to challenge themselves and each other. Rather than discard IBM's long-standing values, he pushed the company to renew them to meet the demands of a very different era. 

I have my own memory of Lou from the mid-1990s, at a small town hall with a few hundred people. What stood out was his intensity and focus. He had an ability to hold the short term and the long term in his head at the same time. He pushed hard on delivery, but he was equally focused on innovation: doing work that clients would remember, not just consume. 

Lou stayed engaged with IBM long after his tenure ended. From my first days as CEO, he was generous with advice—but always careful in how he gave it. He would offer perspective, then say, "I've been gone a long time—I'm here if you need me." He listened closely to what others were saying about IBM and reflected it back candidly.  

That neutral, experienced voice mattered to me, and I was fortunate to learn from Lou on a regular basis. 

Lou was direct. He expected preparation. He challenged assumptions. But he was deeply committed to building a company that could adapt—culturally as much as strategically—without losing its core values. 

Lou's impact extended well beyond IBM. Before joining the company, he had already built an extraordinary career—becoming one of the youngest partners at McKinsey & Company, later serving as president of American Express and CEO of RJR Nabisco. After IBM, he went on to chair The Carlyle Group and devoted significant time and resources to philanthropy, particularly in education and biomedical research. A native of Long Island, NY, Lou earned his undergraduate degree from Dartmouth and an MBA from Harvard, and he remained deeply devoted to his family throughout his life. Lou was preceded in death by his son Louis Gerstner III. 

We will hold a celebration in the new year to reflect on Lou's legacy and what his leadership enabled at IBM. 

My thoughts are with Lou's wife Robin, his daughter Elizabeth, his grandchildren and extended family, as well as his many friends, colleagues, and people around the world who were shaped by his leadership and his work.

Media Contact:
IBM Pressroom
ibmpress@us.ibm.com

 

** The press release content is from PR Newswire. Bastille Post is not involved in its creation. **

Remembering Lou Gerstner

Remembering Lou Gerstner