> Electric planes could recharge using solar or wind. As efficiency increases with these technologies, it would mean planes wouldn't require carrying the same watt-for-watt energy as fuel.

Those are pipe dreams :-)))

Solar recharging for electric cars is not realistic, let alone for electric planes.

Wind charger... maybe there's something there, but the fact that nobody has tried it probably means it's not good enough.

https://www.arenaev.com/why_solar_panels_on_cars_are_beyond_...

> So under optimal conditions the Hyundai solar roof would yield 280kWh *yearly*. In London you'd get 164kWh.