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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 [email protected] to c/[email protected]

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[–] [email protected] 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.

[–] [email protected] 4 points 2 days ago (1 children)

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

[–] [email protected] 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.