Do you have a place to store that water up hill already? Then no. Don't have a place to store that water already? Then yes. Pumped storage is great if you have

Do you have a place to store that water up hill already? Then no. Don't have a place to store that water already? Then yes. Pumped storage is great if you have reservoirs or a place to put them, and the water to pump between them. But those conditions don't really happen that often.