Why is it necessary for the water to go up and down to turn the turbine? Isn’t the pressure already added to the water and you can directly use it to drive a heavier turbine at ground level?
Second, as you can probably guess by looking at the above picture, pumping the water up 40 meters with water pressure and then back down doesn’t accomplish anything—you can just hook the faucet up to your device, and let the water pressure drive the generator directly.
Why is it necessary for the water to go up and down to turn the turbine? Isn’t the pressure already added to the water and you can directly use it to drive a heavier turbine at ground level?