Green Gravity’s renewable-powered technology stores energy by lifting heavy objects up a mineshaft… It calculates it can store two gigawatt-hours of energy from the sites surrounding Mount Isa.
Green Gravity’s renewable-powered technology stores energy by lifting heavy objects up a mineshaft… It calculates it can store two gigawatt-hours of energy from the sites surrounding Mount Isa.
I would hazard a guess that a 40t-rated winch, 40t-rated 100m wire rope, and 40t-rated steel bucket to hold the scrap each cost more than a 10kWh battery.
Don’t forget the generator/engine.
I didn’t claim it was cost or ressource efficient in any way.
That would likely be the winch, but yes, you’ll need a nice large regenerating motor drive.