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Comment by montenegrohugo

I understand the advantages of an electrical motor to an ICE, but I have doubts regarding your third paragraph. The energy density of Li-Ion batteries best-case scenario is around 1 MJ/kg, whilst Kerosene is 42.8-42.6 MJ/kg. That's a 40x !!! difference in energy/weight. Of course the electric engine will have a big efficiency advantage (think 80% vs 40% for ICE), but the gap in energy density is still enormous.

The other (huge) advantages in flight safety and reduction in noise and overhead costs still apply, but I don't believe electrical planes will be as disruptive as portrayed without significant advances in battery technology.

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