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“Battery EV” vs “Hydrogen Fuel cell EV”
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nctnico:

--- Quote from: SiliconWizard on April 03, 2022, 02:01:02 am ---
--- Quote from: james_s on April 03, 2022, 01:40:51 am ---
--- Quote from: Marco on April 03, 2022, 01:12:10 am ---Given the choice ... but lets say we arrive at a point where there's a trillion dollar liquid hydrogen market and some regulators interested in drumming up extra business for it, there's always a chance the choice will be taken away. Or maybe courts in some countries hold governments to environmental promises come hell or high water ... like is happening in my country with NOx emissions (the NOx emission limits are economically crippling, but the courts are holding the government to their promises).

Necessity is the mother of invention.

--- End quote ---

But there never will be. Hydrogen isn't a fuel, you can't mine it, you have to produce it either by cracking hydrocarbons or electrolysis of water and neither process is efficient. The only way hydrogen even begins to make sense is if you have a massive surplus of cheap electricity.

--- End quote ---

Yes. It would just be a convenient (yet not efficient) way of storing energy for later use.
You can add "clean" to "surplus" and "cheap"... because for the time being at least, most of the electricity produced worldwide comes from... fossil fuels. And I'm not sure the combined efficiencies of the whole chain from producing hydrogen to the fuel cells to the electric engines would be in favor of this. I have significant doubts.

--- End quote ---
In the end fossil fuels are taken out of the equation so the price of those don't matter. If you google around a bit about costs of producing and transporting hydrogen then you'll find projections that estimate the cost of hydrogen made from wind & solar to retail around US $5 per kg somewhere by 2050. Producing hydrogen is one of the few alternative revenue streams for countries that export fossil fuels. The alternative is to lose a significant amount of a country's income. For example: currently over 25% of the export value of Australia are fossil fuels. As a country you can't afford to lose that much.
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