Flywheel batteries are disks rotating at high speed to store energy.
Developers claim flywheels can outperform chemical batteries in energy density, power density, lower life-cycle cost and safety. The flywheel developed under this contract would be of light weight, compact and with the ability to recover energy from regenerative braking. Flywheel batteries have been used in satellites and they can run for up to 20 to 30 years without maintenance. This project is a part of the effort to use defense technologies for civilian use. Go to Alternative Fuel Vehicle Page.