Flywheel energy storage systems store kinetic energy (i.e. energy produced by motion) by constantly spinning a compact rotor in a low-friction environment. When short term back-up power is required (i.e. when utility power fluctuates or is lost), the rotor's inertia allows it to continue spinning and the resulting kinetic energy is converted to electricity.
Active Power's CleanSource Flywheel Technology, as shown Below, integrates the function of a motor, flywheel rotor and generator into a single intergrated system, The motor, which uses electric current from the utility grid to provide energy to rotate the flywheel, spins constantlyto maintain a ready source kinetic energy.
an interesting idea, harvesting kinetic energy is a great way to produce free electric