Did you read the article? This isn’t gravity storage, they’re making big capacitors by taking advantage of the way carbon black spreads into closely-spaced pockets when added to cement. It would be part of an electrical circuit.
I’m not saying it’s a good idea; I’m not an electrical engineer, so I can’t really assess the benefits and risks. But I don’t think it’s the thing you’re complaining about.
Did you read the article? This isn’t gravity storage, they’re making big capacitors by taking advantage of the way carbon black spreads into closely-spaced pockets when added to cement. It would be part of an electrical circuit.
I’m not saying it’s a good idea; I’m not an electrical engineer, so I can’t really assess the benefits and risks. But I don’t think it’s the thing you’re complaining about.