CATL Just Launched a Real World Sodium Ion Storage System Here Is What It Means

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icon Jul 10 2026

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MUNICH Germany June 22 2026 Chinese battery giant CATL officially unveiled the TENER Sodium Energy Storage System in Munich calling it the first sodium ion battery storage solution to go through real world testing The company says the technology production capacity and supply chain are all commercially ready CATL expects to ship 1 GWh by the end of 2026 with international deliveries starting in June 2027

We are committed to advancing energy independence globally and delivering long term value said William Wu Director of CATLs Energy Storage Technology Center Our mission has been to create a battery chemistry from abundant resources available on every continent capable of meeting the energy needs of eight billion people with longer cycle life and higher safety Wu emphasized that sodium and lithium will together form the twin pillars of future energy storage

TENER Sodium Certainty for an Uncertain Future

As renewable energy grows and AI driven electricity demand accelerates energy storage is moving from a nice to have to critical grid infrastructure Traditional systems have relied heavily on lithium whose concentrated supply chains and price swings create real risk Sodium by contrast is over 1000 times more abundant than lithium widely distributed and offers advantages in extreme temperature performance safety and cost A shift toward sodium ion chemistry in storage looks increasingly likely

Amanda Xu CTO ESS and President of ESS Europe at CATL said in her keynote The energy storage industry has moved beyond pure scale competition Success now depends on creating long term value Our guiding principle is that readiness creates certainty That she noted is the mission behind TENER Sodium

Powered by CATLs latest sodium ion technology the TENER Sodium system delivers more than 30 MWh of rated capacity through a fully modular architecture The design offers three main benefits

Simplified deployment each module weighs about 42 tonnes and a 1 GWh site needs only 34 units

Enhanced flexibility decoupled energy and power blocks support storage durations of 1 2 4 6 and 8 hours adapting to project requirements

Lower maintenance cost faulty modules can be quickly isolated and swapped improving system availability reducing operating expenses and maximizing asset use

Beyond modularity CATL engineered a station level platform built specifically for sodium ion systems

1 Voltage Regulation

To handle the wide voltage range of sodium ion cells a dedicated bidirectional DC voltage regulation system automatically boosts voltage in the low range letting the PCS maintain optimal output This lifts round trip efficiency by nearly 2 percent which translates to millions of additional kilowatt hours per year for a 1 GWh plant The system works with mainstream PCS products and strengthens grid support

2 BMS

A custom battery management system uses sodiums sloping voltage curve for more precise state of charge estimation Sodium ion cells also tolerate 20 percent higher overcharge SOC than lithium ion cells giving the BMS an extra 20 percent safety buffer and operational flexibility

3 Ultra Low Auxiliary Consumption

A top discharge airflow design eliminates thermal island effects and cuts heat generation by nearly 30 percent Paired with a high efficiency liquid cooling system auxiliary power drops from the industry typical 2 percent to just 1 percent potentially saving millions of euros in operating costs for large long duration projects

4 Low Noise

At only 65 decibels 10 dB quieter than conventional systems TENER Sodium eases community concerns enabling siting closer to load centers and reducing transmission and distribution expenses The system also shares the same footprint and enclosure design as LFP systems allowing operators to switch between sodium ion and LFP batteries without redesigning projects or re certifying An upgrade path to 2000V high voltage architectures is also reserved

A Decade in the Making Supply Chain and Manufacturing Now Commercial Grade

The safety return and reliability advantages of TENER Sodium come from sustained R and D CATL began work on sodium ion batteries in 2016 investing nearly 1.2 billion euros over ten years More than 300 R and D staff have contributed generating over 1600 patent families and more than 200 granted global patents while overcoming over 100 technical hurdles and building a complete materials to cells manufacturing chain

What started in the lab has matured into a scalable material system for energy storage CATL now has the capacity to produce tens of thousands of tonnes of anode and cathode materials and production costs for NFPP cathode materials are expected to fall further The company is working with system integrators to create a full closed loop ecosystem spanning cell R and D system delivery testing and commercial rollout

On the manufacturing side CATL has invested RMB 5 billion to expand sodium ion lines at its Fuding base adding 40 GWh of annual capacity The Jining base in Shandong has planned 160 GWh of sodium ion capacity Mass production lines are fully commissioned and operating ready to support large scale deployment

With technology product supply chain and manufacturing all reaching maturity commercialization is accelerating In China the first sodium ion energy storage systems will be delivered to customers this September Cumulative shipments are expected to hit 1 GWh by year end 2026 International deliveries are set to follow in June 2027

In April 2026 CATL and HyperStrong signed a three year 60 GWh sodium ion storage deal the worlds largest commercial sodium ion contract marking the sectors entry into the gigawatt hour era

Next Generation Energy Storage Building Certainty for the Future Grid

From pioneering LFP as a mainstream storage chemistry to standardizing dedicated energy storage cells at 280 Ah and 314 Ah and the second generation 587 Ah cell and now launching a field validated sodium ion system each of CATLs technology transitions has pushed the industry forward

The TENER Sodium launch signals a new phase where lithium and sodium jointly form the backbone of next generation energy storage supporting the energy transition for decades As the system begins global delivery CATL and its partners are turning strategic vision into a more stable cost effective and sustainable energy future

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