But next-generation batteries—including flow batteries and solid-state—are proving to have additional benefits, such as improved performance (like lasting longer between each charge) and safety, as well as potential cost savings. As demand for energy storage soars, traditional battery technologies face growing scrutiny for their cost, environmental impact, and limitations in energy density. Most battery-powered devices, from smartphones and tablets to electric vehicles and. The 2026 edition of The Energy Storage Report is out now and available to download, charting the key trends, challenges and successes in the industry.