In the debate between lithium-ion and flow batteries for grid-scale storage, there is no one-size-fits-all answer. Each technology offers distinct advantages that make it more suitable for certain applications. Different types of Battery Energy Storage Systems (BESS) includes lithium-ion, lead-acid, flow, sodium-ion, zinc-air, nickel-cadmium and solid-state batteries. As the world shifts towards cleaner, renewable energy solutions, Battery Energy Storage Systems (BESS) are becoming an integral part of the. These systems collect and store energy at times of surplus, meaning it can be redirected to a data center - or back into the wider grid - at times when the wind drops or the sun isn't shining.