That's my second favorite solution. One of the cons of the mines is they tend to be too remote from urban areas. But if that's not a factor then you're golden.

[–] Duamerthrax@lemmy.world 1 points 6 months ago (1 children)

It's exactly like gravity batteries, but do get fooled with fancy renders and inspirational music.

[–] SupraMario@lemmy.world 2 points 6 months ago (1 children)

Lol that's great, and I was more talking about the ones for mines that already have deep holes, this one is hilariously stupid though. Water does make a lot more sense though, only issue I can see with it would be evaporation.

[–] Duamerthrax@lemmy.world 1 points 6 months ago

It's easy to use closed tanks. Mines are still a good site for energy storage, but using water instead of weighted sleds still makes more sense. Simpler over all system.