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Active Power Inc. – Active Power’s flywheel power system provides companies with an instantaneous source of backup power when their main power source is interrupted. Texas-based Active’s UPS (uninterruptible power supply) systems produce power from the kinetic energy of a flywheel, which continues to spin when the main power source is out. Flywheel technology also is useful in offsetting spikes, sags and other hiccups in power flow, a process known as power conditioning. The company describes itself as the “inventor and manufacturer of the most reliable and energy-efficient critical power systems in the world.”
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