It’s a not a new battery or super-hot liquid salt. But while they are not the sexiest of innovative power solutions, there is much to love about flywheels. Yes, flywheels. The energy storage ...

A 22-year-old inventor combines two old technologies into a bicycle that saves energy when it brakes and can then accelerate without pedaling. The technology of a flywheel is simple and old: Use ...

A clever mechanical clutching/flywheel mechanism gets more energy out of train track vibrations than conventional piezoelectric approaches. Most transducers designed to harvest vibrational energy ...

Volvo wants to make your hybrid car obsolete. The Swedish manufacturer is working on a new type of hybrid system that uses a spinning flywheel rather than the batteries and motors employed by modern ...