The truly green hydrogen is still years out, as you say, with wind powering plants that produce ammonia. Tons of energy lost wit every conversion from water to hydrogen to ammonia back to hydrogen, plus the transportation cost of getting hydrogen from the source like Saudi Arabia to Europe. Air Products Group is working on a project in Saudi’s Arabia right now that will do this, but it’s years out.Hydrogen fuelcell EV is more expensive than plain EV and hydrogen production is also much more costly. The emission to produce hydrogen is also a problem because if you use natual gas to produce it, the carbon in natual gas has to be separated in some form.
I doubt how much population it will be affordable to.
The water, wind, solar renewable energy is the only clean energy, but supply is so limited. If we only use renewble energy for family cars, most drivers would need to give up driving at all, because the fuel cost would increase from 10c to $1 per mile. We will need to make fusion power possible.
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