Why is CATL focusing on stationary storage with the TENER Stack?
CATL, the world leader in batteries for electric vehicles, is stepping up its diversification into stationary storage with the TENER Stack, a strategy driven by a number of major trends and challenges in the energy sector:
- Exploding demand for energy storage
The boom in renewable energies (solar, wind) requires high-performance storage solutions to compensate for their intermittent nature. As a result, the stationary storage market is growing rapidly, offering CATL a growth driver beyond the automotive sector.
- Optimising energy infrastructures
With its record capacity of 9 MWh, the TENER Stack can recharge up to 150 electric vehicles or power a household for six years. This unprecedented energy density optimises the use of space and reduces infrastructure costs, major advantages for energy operators and manufacturers.
- Meeting sustainability and safety requirements
CATL promises zero cell degradation over five years and a system life of twenty years, thanks to its innovations in battery chemistry and thermal management. This reliability is crucial in convincing grid operators and investors.
- Flexibility and ease of deployment
The TENER Stack adopts a modular, standardised format (20-foot container), making it easy to transport, install and integrate into centralised or modular architectures. This meets the varied needs of global markets and accelerates widespread adoption.
- Positioning in the face of international competition
By taking on the Tesla Megapack head-on, CATL is asserting its ambition to dominate the stationary storage market too, capitalising on its industrial strength and technological lead.
By focusing on stationary storage, CATL is anticipating changes in the global energy mix and is at the heart of the transition to greener, more flexible and more resilient electricity.
What is the real capacity of the CATL TENER Stack?
The CATL TENER Stack sets a new global benchmark for stationary energy storage thanks to its unprecedented capacity and advanced technical features:
- Record unit capacity of 9 MWh per standard 20-foot container, more than double the capacity of a Tesla Megapack 2 XL (3.9 MWh).
- With this reserve, the TENER Stack can :
- Recharge around 150 electric cars (based on the average capacity of current batteries).
- Supply an average household for six years without interruption.
- Advanced technology LFP: use of high energy density LFP (lithium iron phosphate) cells, offering a 50 % increase in density compared with conventional 20-foot container systems.
- Zero degradation five-year guarantee, a major asset for the long-term reliability and profitability of installations.
- Logistics optimisation The modular, compact design means that more capacity can be installed in the same space, reducing the footprint required by 40 % compared with traditional solutions.
In short, the CATL TENER Stack not only offers the highest capacity on the market, it also combines energy density, durability and deployment flexibility, making it a serious and innovative competitor to the Tesla Megapack for large-scale storage projects.
How many electric vehicles can CATL's TENER Stack charge?
CATL's TENER Stack is emerging as a new-generation energy storage solution capable of meeting the growing demand for large-scale recharging of electric vehicles.
- With an internal capacity of 9 MWh, the TENER Stack can recharge around 150 electric cars, based on the current average capacity of electric vehicle batteries.
- This performance places the TENER Stack among the most powerful energy storage systems on the market, significantly outperforming traditional 20-foot container solutions thanks to an increased energy density of 50 %.
- The ability to charge 150 electric vehicles in a single operation makes the TENER Stack a strategic asset for operators of ultra-fast charging stations, corporate fleets and events with large numbers of electric vehicles.
- This modularity also makes it possible to optimise space and reduce installation costs, while guaranteeing no capacity degradation over five years - a key argument for long-term profitability.
In short, CATL's TENER Stack offers a storage solution capable of supporting the simultaneous charging of 150 electric vehicles, meeting the needs of massive charging infrastructures and large-scale electric mobility projects.
What are the technical innovations behind the CATL TENER Stack?
The CATL Tener Stack is distinguished by a series of major technical innovations that redefine the standards for large-scale energy storage:
- Record capacity and optimised energy density
With a unit capacity of 9 MWh, the TENER Stack far outstrips competing solutions, making it possible to charge up to 150 electric vehicles or power an average household for more than six years. Its energy density is 50 % higher than that of standard 20-foot containers, while optimising the use of space by 45 %.
- Lithium iron phosphate (LFP) technology and advanced safety
The system is based on LFP chemistry, renowned for its thermal stability and enhanced safety. It incorporates new-generation gas sensors and incident suppression measures, triggered 35 % more quickly for proactive risk management.
- Zero degradation over five years
CATL guarantees a total absence of degradation in cell capacity and power for five years, thanks to advances such as biomimetic SEI and self-assembled electrolytes. This reliability extends the useful life of the system and reduces maintenance costs.
- Modular architecture and flexible integration
The TENER Stack adopts a modular structure, facilitating series production, scalable installation and compatibility with centralised or daisy-chained architectures (PCS). This flexibility means it can be easily integrated into a variety of existing electrical networks and infrastructures.
- Simplified transport and logistics
Thanks to a "two-in-one" design, each unit weighs less than 36 tonnes, in line with international logistics standards. This design optimises transport costs, reduces delivery times and facilitates deployment even in hard-to-reach areas.
- Economic and environmental efficiency
By requiring fewer containers for the same capacity (up to a third fewer for 800 MWh stored), the TENER Stack reduces the footprint by 40 % and optimises the construction costs of 20 % storage stations.
By combining high capacity, security, durability and modularity, the CATL TENER Stack is a cutting-edge solution to support the energy transition and meet the growing needs of large-scale energy storage.
Is the CATL TENER Stack easy to transport and install?
The CATL TENER Stack is also designed for ease of transport and installation, meeting the needs of industrial operators, network developers and large-scale energy infrastructures.
- Compact, modular architecture TENER Stack: Thanks to its modular structure, the TENER Stack has an energy density 50 % higher than standard 20-foot containers, and optimised space utilisation of 45 %. This design reduces the number of containers needed for high-capacity installations, simplifying on-site logistics.
- 2-in-1" design for easy transport To meet international regulatory constraints (36-tonne threshold for land transport), CATL has divided each unit into two half-height modules, each weighing less than 36 tonnes. This solution guarantees compliance in 99 % of world markets and allows the use of standard means of transport (spreader, container ships), thus reducing logistics costs by up to 35 %.
- Adaptability to access constraints The modular design and low height of the modules make it easy to pass under bridges, in tunnels or on rural roads, offering unprecedented routing flexibility for systems of this capacity.
- Simplified installation On arrival, the two modules are easily assembled to form a standard 20-foot container, speeding up deployment on site. The system is compatible with centralised and power conversion chain (PCS) architectures, making it easy to integrate into existing infrastructures.
- Safety and robustness The TENER Stack meets international safety standards (IEEE693), withstanding magnitude 9 earthquakes and category 5 hurricanes, guaranteeing reliable installation even in high-risk areas.
In short, the CATL TENER Stack combines optimised logistics, rapid installation and great adaptability, making it a stationary energy storage solution that is particularly easy to transport and deploy, even in complex or remote environments.
CATL TENER Stack: a future leader against Tesla Megapack?
| Criteria | CATL TENER Stack | Tesla Megapack 2 XL |
|---|---|---|
| Capacity per unit | 9 MWh (≈150 electric cars recharged) | 3.9 MWh |
| Degradation | No degradation guaranteed for 5 years | Normal degradation expected |
| Energy density | +50 % compared to ESS standards of 6 MWh | Lower |
| Optimising space | +45 % compared with traditional solutions | Less optimised |
| Floor area | Reduction of 40 % | More cumbersome |
| Resistance / safety | Withstands:- Level 5 tornadoes- Magnitude 9 earthquakes- Fires (2h) | Not specified in such detail |
| Modularity / transport | 2 half-height modules for easy logistics | More complex monobloc installation |
| Software integration | Less experience than Tesla | Advanced, field-proven |
| Experience in the field | Currently being ramped up | Proven experience and large-scale deployments |
| Strategic positioning | The world leader in battery cells sets an ambitious new benchmark | Historical leader, but potentially challenged |
| Conclusion | Potential for world leadership if performance is confirmed on the ground | Current software advantage and feedback |
When will CATL's TENER Stack be available on the market?
CATL's TENER Stack, officially unveiled at ees Europe 2025 in Munich, marks the entry of the world leader in batteries into the very large-scale stationary energy storage segment. Here's what you need to know about its availability:
- The commercial launch of the TENER Stack has been announced for May 2025, with a clear focus on mass production.
- CATL is primarily targeting industrial markets, utilities and energy infrastructure developers, in response to the strong growth in global demand for high-capacity storage solutions.
- The solution is designed for rapid, flexible deployment, thanks to its compatibility with international logistics standards (20-foot container) and ease of on-site installation.
- CATL has not yet announced a specific availability date for the consumer or residential markets, but mass production has already begun for major industrial and energy projects.
- According to CATL's official statements, the first installations should be operational by the second half of 2025, particularly in Europe, where demand for this type of technology is particularly strong.
To sum up, the TENER Stack is already available to industrial and institutional players, with ramp-up expected from 2025 onwards in the world's main energy storage markets.
Technical summary of CATL's TENER Stack?
| Criteria | Key data |
|---|---|
| Product | CATL TENER Stack |
| Capacity | 9 MWh per container (compared with 3.9 MWh for Tesla Megapack 2 XL) |
| EV charging | Up to 150 electric vehicles |
| Technology | High-density LFP (Lithium Iron Phosphate) cells |
| Zero degradation | 5-year guarantee |
| Service life | 20 years old |
| Format | Modular - 20-foot container, "2-in-1" design, < 36 tonnes per module |
| Installation | Fast, standardised, compatible with centralised or modular networks |
| Security | Seismic and hurricane standards, proactive incident management |
| Availability | Scheduled for market launch in 2025 |
| Major advantages | Record capacity, compactness, transportability, cost-effectiveness, small footprint |
Conclusion
The CATL TENER Stack represents a decisive advance in the stationary energy storage sector, combining performance, durability and modularity. With its record capacity of 9 MWh and its technical innovations in terms of safety, energy density and thermal management, it is a formidable competitor to the Tesla Megapack. Designed to meet both the growing need for recharging electric vehicles and the requirements of energy operators, the TENER Stack offers a reliable, scalable and easily deployable solution. By investing in this system, CATL is establishing itself as a strategic player in the global energy transition.
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