Yes. Pretty much the opposite of the article headline, it's surprising how little energy you can store with gravity. When you do the maths, it's amazing pumped

Yes. Pretty much the opposite of the article headline, it's surprising how little energy you can store with gravity. When you do the maths, it's amazing pumped hydro works at all. And that's on the scale of cubic kilometres of water being lifted hundreds of metres - much more than any crane proposal.