CATL Sodium-Ion Batteries: First Batch Delivery in September, GWh-Scale Shipments by End of 2026
N.R. Finch
CATL announced it will deliver its first sodium-ion battery storage systems to Chinese customers this September, targeting GWh-scale shipments by end of 2026 — a milestone that moves sodium batteries from lab validation into commercial scale and could reshape the cost structure of energy storage.
What does the delivery timeline look like?
China market: first sodium-ion battery storage deliveries begin September this year; GWh-scale shipments targeted by end of 2026.
Global market: deliveries start June next year, roughly nine months behind China.
This means → CATL has drawn a clear commercialization countdown — about 15 months of ramp-up from first delivery to GWh-scale output.
Where do sodium batteries stand on cost and performance?
CATL says it has strengthened material structures and improved manufacturing consistency, sharply raising yields — with costs 10%–20% below the industry average.
Product specs: a 3 MWh DC cabinet paired with a 3 MW boost-converter unit forms a complete storage system — 20-year system life, 15,000-cycle lifespan, wide-temperature operation.
In plain terms = one cabinet lasts 20 years, handles 15,000 charge-discharge cycles, and costs up to a fifth less than rivals — that is the hand sodium is playing to win market share.
What does "sodium-lithium same platform" mean for buyers?
The sodium storage system shares the same platform architecture as CATL's lithium system — identical physical footprint, no need to swap cabinets, redesign layouts, or redo certifications.
This means → customers can switch freely between sodium and lithium on one platform, with near-zero switching cost.
Xu Jinmei framed this as "the best hedge against lithium-price swings" — when lithium prices rise, buyers shift to sodium without paying for a system overhaul.
Is production capacity ready?
CATL has invested €650 million to expand sodium-ion capacity at its Fuding base, adding an estimated 40 GWh of annual capacity.
A factory in Jining, Shandong plans to add another 160 GWh of sodium-ion capacity.
Xu said all mass-production lines are up and running. In plain terms = the factory side is loaded and waiting for order volumes to catch up.
Can sodium batteries replace lithium?
Xu stated clearly: lithium and sodium are parallel technologies — both will form the foundation of next-generation storage infrastructure.
Sodium cells have advantages in low-temperature performance, safety, and thermal control during high-rate charging, but lithium-ion remains the industry mainstream today.
This reflects CATL's real read — sodium is not here to kill lithium; it is an additional leg to stand on. Whether it achieves large-scale substitution ultimately depends on whether the actual cost curve keeps falling after GWh-scale shipments begin.
Content is for reference only, not financial advice.