The VSS+dc (Voltage Support Solution) supplies clean energy storage and extended-life DC voltage for critical power applications. In addition, it provides sufficient ride-through for short-duration power outages or until a standby engine-generator can come online. When integrated with a UPS system, the flywheel provides time for an orderly, safe shutdown of process operations and offers protection against more than 99.5% of power disturbances, according to the company.