Green hydrogen was supposed to be a silver bullet solution for decarbonizing hard-to-abate sectors like shipping and steelmaking. The vast majority of hydrogen used in industrial applications is gray hydrogen, which is made using fossil fuels. Green hydrogen is the name for hydrogen made with renewable energies, but this, too, has its drawbacks. In other words, green hydrogen may not be the smartest or most efficient use of clean energy. Critically, this method makes the production of hydrogen much more affordable than standard green hydrogen production methods, at just $1.54 per kilogram (around $0.70 per pound), making it competitive with gray hydrogen.