I'm seeing a lot of people here assuming that the purpose of green hydrogen is for fuel cells / automotive transport, but I don't see many people in this space talking about that anymore (except Toyota).
Instead there is a lot more interest in using green hydrogen for industrial purposes or as a key building block for cleaner fuels like methanol. Currently green hydrogen is expensive to make and sucks to transport. But it will likely get a lot cheaper to produce in the next 10 years and you can convert it into fuels that are easier to transport.
There is recent episode of Volts that interviews a startup trying to do this: https://www.volts.wtf/p/making-shipping-fuel-with-off-grid#d...