this post was submitted on 05 Jul 2025
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[–] nulluser@lemmy.world 2 points 11 hours ago (1 children)

I was going to calculate how much electricity this would consume and how expensive it would be, but the answer to that is plainly “too much to imagine”.

Purely hypothetically speaking, but, what if someone had their own private Dyson Sphere generating electricity? (Asking for a friend.)

[–] squaresinger@lemmy.world 9 points 10 hours ago

The power consumption would be 5*10^62 Wh.

The sun outputs 3.9*10^26 W. If you captured all that energy with 100% efficiency, you would need 1.3*10^36 hours or roughly 1*10^22 times the age of the universe to collect enough energy.

That's incidentally roughly the estimated number of stars in the universe.

So if you put a dyson sphere around every star in the universe, right after the big bang (ignoring that stars didn't form instantly after the big bang) and you ran them until today, then you'd have just about enough energy to crack one wallet with current tech.