"Always"? Depends on what it takes to increase supply, and how long it will be wanted. As I noted, the writing is on the wall for grey hydrogen, so building out

"Always"? Depends on what it takes to increase supply, and how long it will be wanted. As I noted, the writing is on the wall for grey hydrogen, so building out grey production capacity would seem a poor place to put capital. So the price for grey probably will not come down. Meanwhile, green depends on supply of electrolysers, whose factories are still under construction, a process hard to rush. Its supply can ramp up only as fast as electrolysers can be obtained. Efficiency is still improving fast, so buying too many of the old, inefficient ones may also seem unwise. And, the cost of power to operate them is falling as solar and wind get cheaper. At each of various production-cost points on the way down, more people will find it practical for them to use hydrogen at that price.