From the air? There is a lot of air, but the percentage of hydrogen is .000055%.glalt wrote: ↑March 29, 2024, 9:07 amUntil they can extract hydrogen from air economically, major hydrogen use is out of reach. Extracting hydrogen with electricity is somewhat promising but not yet unless the electricity is generated from renewables such as wind and solar. Then there is still the problem of how to transport and store it. Generating electricity from the earths tides is quite interesting but that is too expensive. Hopefully the day will come with small extraction units for hydrogen use locally.
I would suggest the most promising technology is electrolysis using renewable to create the electricity needed to produce and store a portable amount of hydrogen that can be reused for multiple energy uses like powering transportation or firing power plants when base load energy is needed.