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 ...

Instead of using discrete permanent magnets to form the rotor of a flywheel’s integrated motor/generator, magnetic powder is mixed into the composite matrix. After the flywheel has been manufactured ...

• 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 ...