After years of being billed as the next great revolutionary means of propulsion, flywheels may finally be ready for prime time. Aside from a few modest successes, flywheels have not lived up to this ...

• Next-generation flywheels will be capable of megawatt-level energy storage. • Beacon Power’s hubless flywheel will require a breakthrough in magnet design. The ability to store electricity for later ...

Typically, most all-electronic uninterruptible power supplies (UPSs) will handle loads in the tens of kVA range. Handling hundreds of kVA requires an electromechanical UPS, like a flywheel-based unit.

Publications ranging from Wired Magazine to Discover described them as the next major source of clean power. Enthusiastic inventors claimed flywheels could be the primary power source for a variety of ...