Quote:
Originally Posted by euromodder
Audi uses CO2 to make CH4 - for carbon, that's a balanced one-for-one situation. Ideally, not considering conversion losses.
But as the plant is run on wind energy, the losses are also renewable, rather than simply gone forever when fossil fuel is used.
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Ok, not arguing that renewable is more disposable given the current infrastructure in germany, but the audi plant uses electrolysis to make the hydrogen, then converts it to ch4, then distributes it and compresses the hell out of it. Again, not attacking renewables, just wanting them to be used most efficiently, since they do come with a cost in materials and real estate and existing implementations will be referenced (for good or bad) if they are to be utilized elsewhere.
I think my instincts on compressed ch4 from co2 are spot on, though audi does admit it is a workaround for a grid that isn't up to the job, the same 1500 CNG cars it does fuel could possibly be 3000 electric cars from the same real estate, if you could charge them during off-peak hours (or peak as the case may be), and not perpetuate ICEs.
I suspect this approach is somehow linked to Audi's lack of an electric vehicle offering, but that might just be me.