This Is Not a Crane, It’s an Insane New Gravity Battery

The conventional version of this “stored energy” idea, is to pump water uphill into reservoirs — and then release it downhill, to generate the electricity at night.  This works well when a nation has the resources of water and hills, as many demonstration projects have proven.  When those natural resources are scarce — there are “mechanical versions” of the same energy-storage cycle being developed, as explained here: