Two leading Chinese technology companies have signed the world’s largest sodium-ion energy-storage cooperation agreement, covering 60 GWh of sodium-ion battery supply over three years.
The agreement, between Contemporary Amperex Technology (CATL) and HyperStrong Technology was first announced in April 2026.
Sodium-ion batteries replace lithium with sodium, a widely available element that can be sourced from abundant materials. Their chemistry can also avoid cobalt and nickel, depending on the specific cathode and cell design.
That creates an important potential advantage for large-scale energy storage, where cost, raw-material availability and supply-chain resilience can be just as important as energy density.
Sodium-ion batteries generally have lower energy density than the best lithium-ion cells, making them less attractive for applications where weight and compactness are critical. But stationary grid storage has different requirements: a battery does not need to fit inside a car or smartphone.
CATL and HyperStrong’s agreement is therefore significant because it points toward large-scale commercial deployment, rather than sodium-ion remaining only a laboratory technology.
It also shows that the future battery market may not be dominated by a single chemistry. Lithium-ion, sodium-ion, flow batteries, thermal storage and other technologies can each serve different parts of the energy system.
Source: Mechanical Engineers Rocks, October 10, 2026. https://shorturl.at/vIX2O
