New IEAGHG report: Global Assessment of DACCS Costs, Scale and Potential

Direct air carbon capture and storage (DACCS) has some advantages over other negative emissions technologies (NETs). NETs interacting with biomass, such as afforestation, soil carbon storage and bioenergy with carbon capture and storage (BECCS), require significant water and arable land. Other chemical NETs, such as enhanced weathering, risk changing the chemistry of oceans and rivers. DACCS avoids many of these limitations as it has a comparatively small land footprint, but does require a sustainable energy source, geological CO₂ storage to operate and is relatively immature technology with as-yet unproven deployment potential. Furthermore, the varying levels of modularity of DACCS systems imply potential for easy scaling up and rapid deployment.