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That article shows a graph of cement cost increases from alternative energy use, and says: > As you can see, every low-carbon alternative raises costs more tha
by twic 5y ago
That article shows a graph of cement cost increases from alternative energy use, and says:
> As you can see, every low-carbon alternative raises costs more than 50 percent above baseline. The only ones that don’t raise it more than 100 percent are CCS (of the heat source only), blue hydrogen, or resistive electric in places with extremely cheap and plentiful carbon-free energy.
> The alternative that climate hawks would most prefer, the carbon-free option that would work best for most applications, is green hydrogen. But that currently raises costs between 400 and 800 percent. Ouch.
Green hydrogen is by far the most expensive option. 3-4 times more expensive than electric heat. That's the direct opposite of "the real reason we need “green” hydrogen now is for making [...] cement".
This new work will hopefully make green hydrogen cheaper. But if you're using electricity to make that hydrogen, i don't think it can ever be cheaper than electric heating.
- habosa 5y agoSorry I didn't mean it was more viable for that purpose, I meant it's more essential. We already know how to make good electric cars and power them with green-ish energy. For cement and steel we have barely even started making them "green" and they make a huge amount of our total greenhouse gas input.