The economic absurdity is this. Wind, solar and storage is already cheaper than gas and coal without CCS. CCS adds at least 30% to the cost of gas and coal for 25% less output. So in no way is this competitive. Also the implied reduction in out put capacity would need to be replaced with new capacity for which only wind, solar and storage would be the hands down winner.
Vaclav's oil industry analogy is pretty useless and misses the more salient point that even at small scale this is a dead horse. Vaclav has long dismissed renewable energy on grounds of silly analogies to scale. But he missed the key point that through learning curve reductions in cost, renewable energy has achieved cost competitiveness at small scale which is the precondition to renewables to become truly large scale, bigger than all fossil fuels combined. So his scale arguments were worthless in appraising renewable energy, and they are equally worthless in appraising CCS. He's also pushed the insipid idea that fuel density is super important. This too is terribly irrelevant from an economic point of view. If low density adds incremental cost, that is enough to recast things as a economic problem. It is the total cost of delivering power that matters most, especially at scale.