Field testing of multi-megawatt sodium-ion storage systems has demonstrated a 91% round-trip efficiency rate over 2,000 continuous cycles. The results present a viable commercial alternative for stationary grid storage, bypassing lithium supply constraints.
Thermal Stability Redefines Risk Profiles
Unlike conventional lithium-ion chemistry, sodium-ion cells exhibited zero thermal runaway events during stress testing up to 80 degrees Celsius. The thermal resilience reduces auxiliary cooling requirements, lowering balance-of-plant costs by an estimated 18%.