Venkat Srinivasan is the director of the Argonne Collaborative Center for Energy Storage Science. He leads a consortium that was recently awarded a $50-million grant by the U.S. Department of Energy to develop sodium-ion batteries. Venkat offers details of a plan for a more sustainable, lower-cost alternative to lithium-ion batteries. He discusses the future of battery technology and where sodium ion batteries fit into game-changing energy storage solutions.