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I can't really agree with 'promising'. A tower that can lift 100 tons 50 meters is not exactly cheap, and only stores 13.6 kilowatt hours.

Here’s a company pursuing that very idea.


Ah, if you actually build the structure out of the items you're lifting, then that certainly changes the math. Compared to just lifting with a crane you get a thousand times the capacity at the same infrastructure price.

Exactly. It’s really the same principle as pumping water uphill except using concrete blocks and a crane. Potential energy is potential energy.

I’d just love to see it in action.

consider off shore gravity batteries that can drop mass down 2 to 4km. Major fixed cost is Hvdc out 100miles, but it’s extremely scalable after that.

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