this post was submitted on 11 May 2025

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A German Experiment Proved That Simple Concrete Spheres Make Fantastic Batteries. Now, California Plans To Submerge A 9-Meter Diameter Sphere In The Ocean And Is Already Planning Versions Of 30 Meters (farmingdale-observer.com)

submitted 2 days ago by Dadifer@lemmy.world to c/science@lemmy.world

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[–] Lupus@feddit.org 22 points 2 days ago (1 children)

I don’t know what depths we’re talking about here,

From the article:

The idea is relatively simple: hollow concrete spheres are installed at a depth of several hundred metres.

[–] carl_dungeon@lemmy.world 4 points 2 days ago (1 children)

Thanks, I missed that on my read through - 1000 feet of water is pretty serious pressure.

[–] humanspiral@lemmy.ca 1 points 1 day ago

The more pressure the more "equivalent head" power discharge potential. Separate "vacuum pump" (instead of bidirectional) could also have several stages to improve efficiency.