China Doubles Down on Sodium-Ion Energy Storage with 100MW/200MWh Project

The world’s largest sodium-ion project, with a capacity of 100MW/200MWh, is set to double its size. Developed and operated by Datang Hubei Energy Development, the project is already making waves in the energy storage industry. With 42 BESS containers, 21 power conversion system units, and a 110kV booster station, this project represents a significant step towards building large-scale storage projects using non-lithium technologies.

Sodium-ion technology is gaining momentum as a viable alternative to lithium-ion batteries, which currently dominate the market. Despite having a lower energy density and higher cost, sodium-ion batteries could be 15-30% cheaper than lithium-ion by 2025. While commercialization and cost reductions have been slower than expected, the technology offers advantages such as better round-trip efficiency and cycle lifetime at extreme temperatures.

China’s investment in sodium-ion technology is driven by concerns about potential lithium supply chain disruptions in the future. With abundant reserves of minerals for sodium-ion batteries, China is looking to establish itself as a leader in this emerging sector. It is projected that a ‘terawatt-hour’ sodium-ion battery industry could form by 2030, paving the way for a more sustainable energy storage ecosystem.