Comment Comment by FrojoS Similar concept using trains: https://www.aresnorthamerica.com/grid-scale-energy-storageI wonder though, the density of concrete is only about 2.5 higher than that of water. So, a concrete tower, comparable to a pumped-storage hydroelectricity plant would be gigantic. Seems infeasible to me. parent FrojoS 8 years ago
I wonder though, the density of concrete is only about 2.5 higher than that of water. So, a concrete tower, comparable to a pumped-storage hydroelectricity plant would be gigantic. Seems infeasible to me.