Hydrogen is already the cheapest it will ever be, as it's made primarily from natural gas. There's of course so-called white hydrogen: https://hydrogeneurope.

Hydrogen is already the cheapest it will ever be, as it's made primarily from natural gas. There's of course so-called white hydrogen: https://hydrogeneurope.eu/excitement-grows-about-natural-h2-as-huge-reserves-found-in-france/ https://hydrogeneurope.eu/excitement-grows-about-natural-h2-... But known reserves are really small compared to those of natural gas.