I wonder what efficiencies look like for making hydrocarbons from atmospheric CO2 and water.
Not price competitive with fossil fuels, but then not much is - hard to beat ‘mega joules for free*’ as it were.
It’s hard to compete with “let everyone else in the world pay for the true cost of this energy”.
That’s what makes fossil affordable and why we need carbon taxes right this second.
Our current spike in natural gas and oil prices is something of a dry run for what carbon taxes would look like. So far it doesn't seem like the approval ratings of the governing party can survive it.