Regional Opportunities for Carbon Dioxide Capture and Storage in China: A Comprehensive CO2 Storage Cost Curve and Analysis of the Potential for Large Scale Carbon Dioxide Capture and Storage in the People?s Republic of China

Prospects of carbon capture and storage (CCS) in China’s power sector – An integrated assessment

“…Capacities within the storage scenarios are listed for each basin, and divisions are attributed to these basins. This is carried out in two steps: divisions in which at least parts of basins are situated are selected first; a qualitative geographical overlap is then conducted between storage basins and emission clusters in each selected division based on figures by [34]. Finally, a total matched capacity is derived for each combination of S1-S3 and E1-E3.…”

“…An analysis of all known country-wide studies that analysed the CO 2 storage potential in China [34,[42][43][44][45] revealed a huge range of CO 2 storage capacity from 32 to 3,090 Gt, covering oil and gas fields, saline aquifers and coal seams [32]. This capacity has to be classified as theoretical on the techno-economic resource-reserve pyramid [6], since no efficiency factors were applied.…”

“…• Deep saline aquifers: application of the resulting storage efficiencies for saline aquifers to the capacities provided by [34], which was selected as the most detailed countrywide study. Since this study provides the highest capacity figures for aquifers (2,288 Gt CO 2 onshore and 779 Gt CO 2 offshore), the resulting capacity of scenario S3: low (65 Gt) is higher than the capacity of the country-wide study with the lowest capacity (32 Gt).…”

“…. A CO 2 capture rate of 90% is assumed [34,68] and an average net calorific value of the domestically produced coal feedstock of 23 MJ/kg [67] is applied. A plant load factor (PLF) of 80% (7,000 full load hours) is chosen as the average value of a range covered by several sources [34,64,69].…”

The realities of storing carbon dioxide – A response to CO2 storage capacity issues raised by Ehlig-Economides & Economides

“…In our view their case is not representative of the overwhelming majority of storage opportunities that would be encountered in the large, regional reservoirs likely to serve as "baseload" storage capacity, either in the United States or elsewhere (Dahowski et al 2005(Dahowski et al , 2010Nicot 2008). In addition, E&E's radical extrapolation of the results from a single reservoir to a commentary on regional storage capacity is virtually meaningless as it supposes that just one (very thin) reservoir would be available for storage in the entire geological column.…”