Here’s a fuel-saving technology for a range of vehicles you probably haven’t heard about in a while: flywheels. Designed to capture and re-use braking energy, flywheels are now being tested not just ...

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 ...

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 ...