Flow batteries, a mature but underutilized energy storage technology, are gaining attention from data center operators. XL Batteries has partnered with Prometheus Hyperscale to pilot a 333-kW organic flow battery, and other companies are exploring similar technologies. Data centers require flexible and reliable power sources to meet sudden shifts in demand, and flow batteries can provide this. Industry leaders believe that data centers’ unique power needs could lead to the adoption of new and alternative energy storage solutions, such as nickel-zinc batteries and supercapacitors.
Data center operators are looking for solutions that balance speed to market, operational reliability, and sustainability. While lithium-ion batteries are still the most widely discussed solution, alternatives are gaining attention due to their high power density, improved safety profile, and environmental benefits. The industry is focused on use-case driven decisions, with battery chemistry choices depending on specific operational needs. As pilot projects prove successful, there may be a rush on manufacturing capacity, prompting companies to move quickly to secure their place in the market.