[DoctorOetker]

the ~$100 per ton of CO2 is only to capture CO2 to the form of K2CO3, the energy cost to convert this to fuel will be much more!

[linkregister]

I believe what the poster was implying is that in a future scheme, the cost of carbon capture would be directly added to the cost of the fuel. This is in line with other extraction industries, e.g. logging, where the loggers must plant replacement trees. The cost of that replacement is incorporated into that of the lumber, wood pulp, etc.

[DoctorOetker]

In the future (where all fuel is manufactured by energy from renewables), the price of carbon fuel would simply be the price of manufacture: capturing CO2 and energizing it into fuel. Or are we celebratinng the fact that some people learned about objective energetic cost today? Capturing CO2 has never been hard, and to make the analogy with the loggers planting trees more complete, the price component due to capture would be almost nothing compared to the price component of turning CO2 into fuel which would make up the majority of the price of this future fuel.

[AstralStorm]

And how do you get enough substrates, plus how expensive and energy intensive they are?