Batteries carry a lot less energy per kilogram, so transporting them uses more energy than transporting biofuels. You also have to carry empty batteries back to the source rather than it being a one way trip. It could be feasible on rails, but those are two major limitations compared to just running some big cables over land. The weight problem also means that some amount of combustible fuel will always be necessary, since batteries and aviation are not compatible.

The biggest disappointment is when you finally lock in and process the paragraph and it had nothing of substance to say.