> Each 775-ton flywheel can spin up to 225 rpm and store 3.75 GJ,[47] roughly the same amount of kinetic energy as a train weighing 5,000 tons traveling at 140

> Each 775-ton flywheel can spin up to 225 rpm and store 3.75 GJ,[47] roughly the same amount of kinetic energy as a train weighing 5,000 tons traveling at 140 kilometres per hour (87 mph). Each flywheel uses 8.8 MW to spin up and can generate 400 MW (briefly) Does that mean that the 775 ton flywheels could come to a complete stop in less than 13 seconds if fully used up?