Why storage is such a big deal ?

dilsatu

Dear All,
I am reading storage of Sustainble energy is a big problem due to phase difference of demand and supply.
Why simply pump sea and lake water up to a mountain lake, store it,  and use it down stream energy  whener you need... Store energy as potential energy...covert it electrical whener you need it...

dilsatu

dilsat.uyguroglu@gmail.com

mike95490

It's been around quite a while, called Pumped Hydro Storage
https://en.wikipedia.org/wiki/Helms_Pumped_Storage_Plant