Okay, I was sort of wrong, the greyness comes from CO2 emissions and energy
costs assuming the process does exactly what it claims at 100% efficiency.
It's probably also dirty hydrogen, contaminated with feedstock and
byproducts, because 100% efficiency in petroleum engineering has never been
a priority.

-- rec --


On Sun, Feb 6, 2022 at 10:31 PM Marcus Daniels <[email protected]> wrote:

>
> https://thebulletin.org/2022/01/whether-green-blue-or-turquoise-hydrogen-needs-to-be-clean-and-cheap/
>
>
>
> On Feb 6, 2022, at 7:20 PM, [email protected] wrote:
>
> 
>
> Grey hydrogen?
>
>
> https://retakeourdemocracy.org/2022/02/06/another-stunning-hydrogen-development/
>
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