US battery firms unite to challenge China in energy storage race

US energy storage firms have joined forces to push for federal backing in the growing battery market. The new American Battery Leadership Coalition aims to help domestic companies compete with Chinese rivals. This comes as advancements in sodium-ion and flow battery technologies gain traction for long-duration energy storage. Sodium-ion batteries are emerging as a promising alternative to lithium-ion, offering longer storage durations. Unlike typical lithium-ion systems, which last around four hours, sodium-ion batteries can store energy for much longer periods. Their key ingredient, domestic salt, is abundant, inexpensive, non-toxic, and non-flammable.

ESS Tech is expanding its sodium-ion business to challenge lithium-ion dominance in short- and medium-duration markets. The company also continues work on its flow battery, designed for 8-24 hours of storage, while targeting near-term opportunities in faster-growing segments.

Research from the Pacific Northwest National Laboratory shows that hydropower operators can boost revenue and cut costs by storing excess power in batteries instead of curtailing turbines. Meanwhile, China has already introduced sodium-ion storage systems, with CATL planning to ship 1 gigawatt by the end of 2023. Energy storage solutions are making wind and solar power as reliable as traditional energy sources. These technologies allow clean energy to be stored and used later, regardless of weather or time of day. The US coalition and innovations in sodium-ion and flow batteries signal a growing push for domestic energy independence.