Green hydrogen rabbit hole:
When last I looked into this a couple of years ago, I took as my reference point Professor Julian Allwood of @ukfires saying in 2022:
“Hydrogen has taken over as the current seductive buzzword, and the government’s Net Zero strategy published just a few months ago mentioned the word ‘hydrogen’ 501 times in 360 pages of text, even though as we stand there is not a single kilogramme of hydrogen being produced in the UK with zero emissions”