>>10879587>gravity battery is just rechargeable hydro powerWhat if we made a hydro plant that doesn't use water? Make it use sand or something. Like a giant freaking sand hourglass with a turbine attached. It would need some sort of Archimedes screw, or something, to bring sand back to "recharge" the battery.
NEXT:
Increased mass/weight of material gives increased power density.
Upgrade with steel ball bearings instead of sand.
Ball bearings give reduced friction. Less energy lost. Higher efficiency.
I'm just shouting out crazy schizo ideas at this point but ....... is any of this plausible at all?
