This post is from the excellent book Energy Myths and Realities: Bringing Science to the Energy Policy Debate by Vaclav Smil.
In the chapter Technical Fixes, Smil discusses Carbon Capture & Storage (CCS). Below I highlight two insights that I found fascinating.
The size of infrastructure required to handle CO2
Smil calculates that to sequester 15% of 2008 emissions would require handling around 6 billion m3 of CO2. In the same year total global crude oil extraction was around 4.6 million m3. This puts into perspective how unrealistic large scale CCS is.
The amount of time and capital it would take to develop a system on the same scale as todays crude oil extraction is immense. To think that building such a massive system would still leave over 80% of our emissions untouched is incredible.
Projections for future price declines
Smil also comments on the potential for future cost declines of CCS technology.
Smil points out that we often make the mistake of assuming that the impressive cost declines seen in electronics will occur in other industries. Producing advanced microprocessors is an automated process with low labour and material inputs.
This is contrasted with the massive amounts of labour and materials required for the construction and maintenance of CCS infrastructure (capture plants, pipelines, compressors, injection sites). He also makes the point that materials needed to produce this infrastructure would put upward pressure on the cost of materials such as steel, aluminium, plastics and concrete.
Consequently we cannot exclude increased, rather than decreased, unit costs with a future mass adoption of carbon capture and storage.
Thanks for reading!