[largolagrande]

> A lot of cheap solar energy, from the best location.

I recommend that you watch the "Planet of the Humans" documentary to understand why there is no cheap solar energy, no so-called "green" energies: https://www.youtube.com/watch?v=Zk11vI-7czE

So there will never be any "green" planes, no matter if they use hydrogen or kerosen. Since the minimum required amount of energy to fly from point A to point B with N passengers will always be the same.

[jakozaur]

Michele Moore movies optimize for publicity, not scientific accuracy.

There are some truths in the movie (e.g. biomass would not work), but many times he is plain wrong. E.g. 8% solar efficiency, when my neighbours installed 21% one and 15% is common on utility scale. No solar panel on the market has just 10 years+ lifespan, many come with 20+ year warranty and could still produce energy afterwards with tiny decrease in efficiency.