> The main advantage is that energy storage today is more efficient, with new technologies coming out. But not cheaper or anywhere close to the scale of pumped

> The main advantage is that energy storage today is more efficient, with new technologies coming out. But not cheaper or anywhere close to the scale of pumped hydro? Hydro requires favorable geography and/or rebuilding the grid to cope with the extremely large flows required to keep up with storage. So, energy storage works, but is not economically feasible other than as research projects outside of hydro? Looks like peaker plants are here to stay for a very long time.