this post was submitted on 15 Aug 2026
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[–] UnderpantsWeevil@lemmy.world 16 points 1 day ago* (last edited 1 day ago) (2 children)

$5 of electricity to lift an airplane 10,000 feet definitely seems low.

If you want to be really smug, you could say a gas powered plane requires $0 of fuel to glide for 30 minutes

[–] Taldan@lemmy.world 1 points 10 hours ago

The plane only went 100 AGL. It has a service ceiling of 2,000 feet AGL

This plane has massive wings, making it incredibly good at gliding (for its massive weight)

As far as I can tell from public information, they climbed to 1,100 and glided the rest of the time to land

[–] xthexder@l.sw0.com 10 points 1 day ago (2 children)

Now that you mention it, they specify a maximum total weight of 25,000 lbs, so at 100% efficiency it would take 339MJ of energy to lift the fully loaded plane to 10,000 ft. That can be converted as 94 kWh, and at the current cheapest electricity price in the US of $0.1235/kWh, that's $11.63

Therefore, it is literally impossible for this plane to reach 10,000 ft for $5 fully loaded.

[–] Fmstrat@lemmy.world 1 points 6 hours ago

That's consumer pricing.

[–] UnderpantsWeevil@lemmy.world 4 points 1 day ago (1 children)

price in the US of $0.1235/kWh, that’s $11.63

Way cheaper than I'd have guessed.

737 at max takeoff weight is 175k lbs. So that's around $80 to get airborne. Seems like a steal when you're charging easily triple that for one seat.

[–] xthexder@l.sw0.com 6 points 22 hours ago

To be clear, this is the theoretical minimum amount of energy to lift a mass straight up. I'd be surprised if an airplane moving sideways would hit even 30% efficiency in comparison.