I remain skeptical of electric flight. The only use-case I’ve seen so far that comes close to being realistic is the Harbor Air project with the electric Beavers. They are an island-hopping transport company where most flights are around 15 minutes. That’s a pretty rare use case, but one that actually works for electric power.
Beware scam companies. ‘Green’ solutions are ripe for scams, because we are raining money on people who claim to solve vexing global warming problems, and we’re suckers for ‘disrupting’ designs and fancy CGI marketing. The vast majority of the futuristic electric airplanes we see breathlessly reported in the tech press will never be certified.
And there are always tradeoffs. While hydrogen is similar to kerosene in terms of weight, it needs about four times the volume - and apparently it’s not easy to store in wing tanks. You need something like a 700 bar carbon fiber pressure vessel to hold the hydrogen, which could present its own certification problems. I’d hate to be in a crash with one of those in the fuselage. Then there are problems with hydrogen embrittlement, which will necessitate new inspection regimes before we certify these planes.
I will say hydrogen fuel cells look to be more promising for electric flight than batteries as of today.