3 ms·Uphill water storage has little energy density, you need huge reservoir to get useful amounts of energy.by rini17 2y agoUphill water storage has little energy density, you need huge reservoir to get useful amounts of energy.culopatin 2y agoOk, and?rini17 2y agoAnd it means extracting the kinetic energy in this scenario is not worth it, you won't recoup the cost of turbine. Only advantage of placing electrolyte above the cell might be that you don't need to pump it when discharging, only when charging.