Hydrogen is certainly not pie in the sky. It's already a very major industry.
I understand that there is a debate on what source of power we get it from. However, hydrogen complements them all. If you're making nuclear, you can try to produce power, heat and hydrogen. If you're talking renewables and wind and solar, you can use the hydrogen to help smooth the band and provide additional value to them. If you're talking fossil fuels and a just transition for the fossil fuel sector, you can produce hydrogen and sequester or manage the carbon and allow that industry to continue thriving.
My personal view is that we're going to need all of these solutions. As you mentioned, we have a very short period of time—