5 ms·
Does that matter though? If it is weak to extract energy with gravity, then it should also be weak to “charge” the system against gravity. The weakness may push
by mbreese 6y ago
Does that matter though? If it is weak to extract energy with gravity, then it should also be weak to “charge” the system against gravity. The weakness may push these systems to less “instantaneous” loads, but I don’t see why it would necessarily be bad to use gravity storage (as opposed to another mechanical method like pressure).
I’d love for someone to explain more though.
- dahfizz 6y agoIt's just impractical. You only need a 21x21 foot square of ground covered in solar panels to generate the same amount of electricity this does. It doesn't make sense to invest so much land, machinery, and labor into something that generates and stores so little energy
- vanattab 6y agoWhile I don't disagree with your general sentiment of the viability of gravity batteries. I don't think its a very good comparison. One is all about electricity generation and the other is all about storage. If gravity batteries ever become used in practice it would probably be in tandem with solar. You would charge the battery during the day off solar and allow it to discharge at night when there is no sun to stabilize the grid.
- zestyping 6y agoBecause gravity is so weak, in order to store a meaningful amount of energy, the lifted object has to be very heavy or very high. Building large tall structures is expensive, and we just don't have objects that are dense enough to make the system small.