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Surplus wind power hoists 35-ton blocks cast from recycled concrete and industrial aggregate toward the top.
The site says the blocks are made from recycled concrete
That’s supposed to be a finite resource, not a poster child for why more is “necessary”. ☝🏼
Oh wow, been years since i last heared of gravity batteries. AdamSomething i think made a video about these, tldr water reservoirs are much much more efficent
