Compressed air, flywheels and more: Energy storage solutions being tested in Canada
A plant in a former salt mine in Goderich, Ont., billed as the world's first emission-free compressed air facility. It can feed 10 megawatts of power into the grid for up to five hours. A smaller demonstration that Flywheels Flywheels (or rotors) spin at very high rates (up to 50,000 revolutions per minute), typically in a vacuum so air friction doesn't slow them down. Power is stored as kinetic energy by using a motor to accelerate the flywheels, and energy can be discharged by reversing the process so the flywheel drives a motor or some other electrical generation device. While this can h...