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A comment on Gravitricity – Fast, long-life energy storage. Parent comment

Re:Gravitricity – Fast, long-life energy storage by lightgreen on Wednesday September 09, 2020 @03:21AM (#24418236)
From Wikipedia: Flywheel energy storage systems using mechanical bearings can lose 20% to 50% of their energy in two hours.

Basically flywheel cannot store energy for a long time. It needs to be constantly used to be effective.

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Re:Gravitricity – Fast, long-life energy storage by choeger on Wednesday September 09, 2020 @03:43AM (#24418396)
Could you not levitate the flywheel on magnets?
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Re:Gravitricity – Fast, long-life energy storage by Aachen on Wednesday September 09, 2020 @06:11AM (#24419382)
Apparently not that easily or the half-life would be longer than two hours... You want to try if storing energy in a flywheel while using a lot of energy for the magnetic field can outperform gravity storage?
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