Comment on Direct Solar Power: Off-Grid Without Batteries | How we can minimize expensive, ecologically damaging battery storage by changing how we think about energy

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schroedingershat@lemmy.world ⁨1⁩ ⁨year⁩ ago

It takes a 260kg flywheel with all its mass at the edge spinning at mach 0.5 to store 1kWh.

If you want simple, build a carnot battery. It’ll be half as efficient, but far more compact and long lasting.

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