Fascinating stuff, and clearly the future,
May not be around to see if this really is the future, IMHO this is a non-starter for anything outside of pure private short hop flying returning to the same airfield/charging point.
While there is funding available for these "fantasy" projects they will aways be promoted as "the clean, green future" until the reality sets in and the cash dries up.
NO one is ever going to fly the atlantic or even as far as Benidorm on an elec aircraft with hundreds on-board.
It ain't goin' to happen.