News for hackers. Stuff that matters.

A comment on To Store Renewable Energy, Try Freezing Air. Parent comment

Re:To Store Renewable Energy, Try Freezing Air by omegabravo on Thursday January 09, 2020 @04:24AM (#21999705)
that does look like a lot of concrete. I suppose ideally it would be a shell filled with the dirt removed to create the hole, even then it would be substantial at 150m in diameter (the smaller one)
[ Parent | on HN ]
Re:To Store Renewable Energy, Try Freezing Air by marsokod on Friday January 10, 2020 @04:52PM (#22015989)
You create the rings of concrete around the cylinder while you are carving it, so actually not so much concrete. I am puzzled about the engineering required for the base, but on the paper it looks quite neat.
[ Parent | on HN ]