Comment by vardump
20 hours ago
Jet engines are not 100% efficient.
Electric motors can be pretty close, 98% is realistic. Of course other parts of the system will lose energy, like conversion losses.
Of course that doesn't mean batteries are currently a viable replacement. One should still take efficiency into account in quick back of the envelope calculations.
Halve it to 0.11G then.
It makes no difference, we’d still need gigawatt scale electricity production, with some multiple of that at peak, just for a fairly unremarkable airport.