The growing use of renewable energy and the phasing out of fossil fuels is creating a large flexibility gap that needs to be filled by clean technologies such as energy storage. Long-term storage technologies are critical to solar and wind power, addressing the challenge of intermittency. While lithium-ion stands as the incumbent, scaling it for extended durations proves costly. Alternative solutions poised to fill this role will need to demonstrate scalable manufacturing and large-scale deployments to meet soaring demand. In this special miniseries of the Platts Future Energy podcast, metals engagement lead Jesline Tang and energy storage analyst Susan Taylor join metals markets reporter Euan Sadden to discuss the evolving landscape of alternative long-term storage technologies, their impact on the battery sector, and how they compare to existing lithium-ion battery systems. For more information, visit https://www.spglobal.com/commodityinsights/en