Cost breakdowns at the FOAK and Gt-CO2 year -1 scale are available in the ESI Figure . For a FOAK plant, the capital costs are dominant for solid sorbent DACS, but they also make up a large proportion of the cost for KOH-Ca looping and MgO ambient weathering. The exception is KOH BPMED, which is dominated by operating costs through high energy demands. This begins to change as deployment progresses. Operating costs have much more influence when the technology has fully matured. Deployment will drive capital costs down at a higher rate than operating costs, therefore deployment is key to cost reductions.