Due to their proven reliability, low cost of ownership, small footprint, and favorable environmental characteristics, managers of data centers and other mission critical facilities are reaping the benefits of clean energy storage that flywheels offer.

While valve-regulated lead-acid (VRLA) batteries have long been the mainstay for power backup with UPSs, they have their challenges — they’re unpredictable and require frequent replacements, and they also have precise cooling requirements and a large footprint, to name a few.