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
Storing renewable energy sustainably and efficiently is one of the major challenges of our time. A team of German researchers is proposing a revolutionary solution: concrete spheres immersed in the ocean floor. Their potential is such that California is preparing to test a large-scale prototype. A simple, ingenious concept The…
  • gian @lemmy.grys.itEnglish
    1·
    6 小时前

    Did you not catch the part a couple comments ago where I agreed with you?

    Nope, miss it. My bad ;-)

    Yeah, of course it’s cheaper to not send divers down. All I’m saying is cheaper cheaper doesn’t mean cheap. And my larger point is that it’s probably not cheap enough, not least because they’re planning for a 20 year part replacement cycle on metal bits exposed to high-pressure seawater and that just doesn’t seem plausible to me.

    I think that this depends on how much this system can really “produce”.
    In a 20 years cycle (ok it is theoretical), it does not seems too hard to overcome the maintenance costs, even this high, assuming the production is high enough, which is to be demostrated.