Yes, is there any reason to think that there'll be more than a factor of 2 difference? Fossil fuels will tend to have a higher hydrogen to carbon ratio than ch

Yes, is there any reason to think that there'll be more than a factor of 2 difference? Fossil fuels will tend to have a higher hydrogen to carbon ratio than charcoal but the energy per carbon isn't that different. https://en.wikipedia.org/wiki/Emission_intensity https://en.wikipedia.org/wiki/Emission_intensity