The following submission statement was provided by /u/cartoonzi:

I was aware of the challenges of hydrogen, like the high production costs of green hydrogen and why hydrogen isn't an ideal fuel to create electricity, but I didn't know how bad blue hydrogen is.

"In a peer-reviewed study, Cornell and Stanford researchers found that emissions from blue hydrogen production are only 9%-12% less than those from grey hydrogen. Blue hydrogen production also releases more methane than grey hydrogen, which traps 80 times more heat than CO2 during its first 20 years in the atmosphere (MIT)."

The article also discusses the storage and transportation challenges, and how much energy is lost when hydrogen is converted to be compressed as a gas or liquified, which can consume 10%-40% of its energy.

It was also interesting to learn how the steel manufacturing company in Sweden was using green hydrogen instead of coal.

One thing I don't hear enough about is pink hydrogen (made using nuclear power). Does anyone have any interesting readings or case studies on whether it's a viable path for hydrogen production?

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/zd6e46/the_truth_about_hydrogen_fuel_and_how_it_can/iyzyg3p/