Nope. Pumped storage is between 70 and 80 percent efficient, this is 85 percent efficient. Remember, with pumped storage, the pumps/turbines are usually centrif

Nope. Pumped storage is between 70 and 80 percent efficient, this is 85 percent efficient. Remember, with pumped storage, the pumps/turbines are usually centrifugal vanes, not displacement pumps. So, there’s quite a bit of inefficiency caused by fluid drag and leakage/backflow, like in an automatic car transmission without a torque converter. With a crane, the motor is directly geared to the weight.