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 ...

The technology of a flywheel is simple and old: Use energy to spin up a wheel very quickly. Later, you can take that spinning energy and use it for something else. But you normally think of flywheels ...

The premise is simple. A flywheel is an incredibly heavy wheel that takes huge effort to push. Keep pushing, though, and the flywheel slowly builds momentum; keep adding ways for other initiatives to ...