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Optimal source-sink matching and prospective hub-cluster configurations for CO
 2
 capture and storage in India


 
 At COP-26, India announced strong climate commitments of reaching net-zero greenhouse gas emissions by 2070. Meeting this target would likely require substantial deployment of CO
 2
 capture and storage (CCS) to decarbonize existing large point sources of CO
 2
 . This study attempts to evaluate opportunities for deployment of CCS in India in the forthcoming decades. A GIS based approach was adopted for mapping existing sources of CO
 2
 with the sinks. The results show that regionally-appropriate ways of moving towards CCS at scale exist in both the power and industrial sectors. Coupled analysis of these sectors with sinks shows that 8 clusters may be developed throughout the country to sequester 403 Mt-CO
 2
 annually. These clusters are concentrated near Category-I oil basins and the Category-I coalfields (Damodar valley), which may also create suitable financial incentives by incremental oil and coalbed methane recovery respectively. Furthermore, a first-order costing analysis evaluates that the cost of avoidance across basins may range from $31 to $107/t-CO
 2
 , depending on the type of storage reservoir and the proximity to large point sources. A total of 12 suitable hubs and clusters were created based on annual emissions above 1 Mt of each large point source and their proximity with geological sinks.
 
 
 
 Supplementary material at
 https://doi.org/10.6084/m9.figshare.c.6189961
