Supplier to Australia’s biggest battery expects to announce first sodium-ion battery project soon - Renew Economy

A battery supplier to Australia's largest battery storage project says it expects to announce a sodium-ion battery project soon. Sodium-ion technology offers an alternative to lithium-ion, potentially reducing reliance on lithium supply chains and using more abundant raw materials.

Where this fits

This touches the sovereignty and materials pressure directly. Australia's renewable build-out depends on battery storage, which in turn depends on lithium sourced from a handful of countries and processed almost entirely in China. Sodium-ion shifts the supply-chain risk from lithium to sodium, which is abundant. But the announcement is only an intention to announce: no timeline, scale, cost, or performance specification is public. This is the pattern in firming and storage: projects are perpetually imminent, while grid operators today are burning gas to cover the weather-dependent gap.

What it means

Sodium-ion batteries carry lower energy density and higher self-discharge than lithium-ion, meaning more material tonnage and more frequent cycling to store the same energy for the same duration. They may reduce one chokepoint (China's lithium processing) but may widen another (raw material volume and land footprint). The real issue remains unaddressed: firming a renewables-only grid requires storage or dispatchable generation at a scale and cost that sodium-ion alone cannot solve. A firm, energy-dense alternative, nuclear, remains banned by law, while Australia waits for battery chemistry to mature and supply chains to diversify away from Chinese processors.