If you also include the value of avoided fossil fuel use in this calculation, the total
GHG abatement cost of the whole system would come out even lower (i.e. around $ 10 / t CO2 - equivalent).
Not exact matches
The
GHG abatement curve prepared by the consultancy McKinsey, above, shows that
cost - effective CDR technologies (highlighted in orange) can help reduce the overall
cost of decarbonization.
Of note is that McKinsey only considered
GHG abatement options that they expected would
cost less than 80 Euros / tCO2 in 2030, whereas the full CDR supply curve includes a number of approaches well above that threshold.
No, I do not assume that
GHG emissions do more harm than good, nor do I assume that damages from emissions exceed
abatement costs,...
Assuming a 25 year book life and small opex for such a 200 MW tower, this translates into roughly a $ 100 / t CO2 - equivalent
cost of
GHG abatement.
This leaves a potentially
cost - effective source of
GHG abatement on the table, one that complements and reinforces other
GHG reduction efforts.