this post was submitted on 17 Sep 2025
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Technology

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261
How big a solar battery do I need to store all my home's electricity? - Terence Eden (shkspr.mobi)
submitted 1 day ago by mesamunefire@piefed.social to c/technology@lemmy.world
209 comments fedilink hide all child comments
 

Neat breakdown with data + some code.

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[–] edent@lemmy.world 17 points 11 hours ago (1 children)

1 Watt is the equivalent of moving 1Kg 1 metre in 1 second.

If you want a kilowatt - you need to move 1,000Kg 1 metre in 1 second. Or, I guess, 1Kg a Km.

Plug the numbers together and you'll see that you need a massive physical load and a huge distance in order to store a useful amount of energy.

[–] ripcord@lemmy.world 1 points 4 hours ago* (last edited 4 hours ago) (1 children)

This seems like a way different conclusion than the car * 7.3m / day guy

[–] edent@lemmy.world 2 points 4 hours ago (1 children)

The secret ingredient is gravity!