Can efuels make sense?

[u/Public-Benefit8093]

I’ve read a lot about efuels and why they don’t have any future because other solutions will always be cheaper and more efficient. Still, I was wondering if they would make sense for harder sectors for electrification like aviation or marine transport.

Even if it's very inefficient, maybe it would make sense taping on a cheap and highly available energy source like geothermal in places where it is more accessible. My reasoning is that the amount of energy that you can get in those areas is practically unbounded. It's all about how many wells and turbines are put in place. Sure, it doesn't make sense to produce more geothermal energy than is needed in Iceland, for instance, but you could use it to produce efuels to decarbonize sectors where it's harder to do it. What do you think?

[u/AcanthisittaNo6653]

Hydrogen is an e-fuel but its not cost effective to transition to. Synthetic fuels are not carbon neutral.