CATL, Alfen to deploy 5 GWh of 30-year sodium-ion storage
SkimNews Take
A 30-year cycle life claim signals battery markets splitting by use case: lithium keeps mobility where energy density rules, while sodium claims stationary storage where decades of cheap cycling outrank weight — a chemistry bifurcation the industry has been slow to name.
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- CATL signed an MOU with Dutch energy company Alfen to deploy 5 GWh of its Tener Sodium energy storage systems across Europe, with deployments scheduled to begin in 2027 using the platform launched in Munich on June 22.
- The Tener Sodium system is rated for 15,000 cycles and a 25-to-30-year service life at a 70% state-of-health threshold, versus typical LFP storage warranties of a few thousand to about 10,000 cycles.
- Using what CATL calls dipole wide-temperature technology, the system retains over 92% of capacity at -20°C and supports more than 10,000 cycles at 45°C without added insulation or active cooling, stripping out thermal-management hardware costs.
- Alfen has built battery storage since 2011 with more than 1 GWh installed across Europe and has sourced lithium-ion cells from CATL since 2023; CEO Michael Colijn called sodium-ion "the next step" in storage strategy.
- Sodium is roughly 1,000 times more abundant than lithium, and Alfen said the move is meant to "optimise cost structures" and improve "resilience against lithium price volatility."
- The deal follows CATL's 60 GWh sodium-ion supply agreement with integrator HyperStrong in April — the largest sodium order ever placed — as US firm Peak Energy shipped the country's first grid-scale sodium-ion battery and GM backed Peak Energy's sodium platform.
Why it matters: A 25-to-30-year, 15,000-cycle sodium battery changes the levelized-cost math for European grid operators in ways incremental LFP gains don't, while sodium's roughly 1,000x abundance over lithium insulates buyers from the price swings that battered storage the past three years. With CATL's separate 60 GWh HyperStrong deal in April, sodium has shifted from "someday" chemistry to back-to-back multi-gigawatt orders.
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