[rklaehn]

Why would it matter how big the plane is? For a certain battery energy density and battery mass fraction, you should get a certain range, no matter what the size of the plane is. If anything, large planes should be a bit more efficient.

I think hybrid would be a great compromise. Short range jets spend a lot of kerosene just during taxi and takeoff. If you could just do launch and climb on batteries and then replenish the batteries from a jet powered generator during cruise, that would already be huge in terms of not just CO2 but also ops cost.