TechnologyMaterials for sodium-ion batteries are abundant, but supply chain hurdles remainsPeak Energy is working on a battery storage system that does not use lithium. (Pak Yiu)PAK YIUFebruary 19, 2026 11:08 JSTDENVER, Colorado -- Tucked away on a plot of land by a solar farm near Denver, Colorado, sits a nondescript, white container weighing 110,000 pounds and packed with enough batteries to power 2,700 homes for four hours.