These innovations, encompassing solid-state batteries, flow batteries, supercapacitors, and even mechanical solutions like compressed air energy storage (CAES) and thermal energy storage, offer diverse pathways to overcome the constraints of lithium-ion. Breakthroughs in battery technology are transforming the global energy landscape, fueling the transition to clean energy and reshaping industries from transportation to utilities. With demand for energy storage soaring, what's next for batteries—and how can businesses, policymakers, and investors. Energy storage beyond lithium ion is rapidly transforming how we store and deliver power in the modern world. Yet, lithium-ion batteries face challenges like safety risks, limited lifespan, and slow charging.