[vardump]

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.

[TheSpiceIsLife]

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.