Table TS.4. Summary of CO2 capture costs for new hydrogen plants based on current technology

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Table TS.4. Summary of CO₂ capture costs for new hydrogen plants based on current technology
Performance and cost measures	New hydrogen plant
	Range	Representative value
	Low - High	Representative value
Notes: Ranges and representative values are based on data from Table 3.11. All costs in this table are for capture only and do not include the costs of CO₂ transport and storage. Costs are in constant US$2002. Hydrogen plant feedstocks are natural gas (4.7-5.3 US$ GJ^-1) or coal (0.9-1.3 US$ GJ^-1); some plants in dataset produce electricity in addition to hydrogen. Fixed charge factors vary from 13-20%. All costs include CO₂ compression but not additional CO₂ transport and storage costs (see Section 8 for full CCS costs).
Emission rate without capture (kgCO₂ GJ^-1)	78 - 174	137
Emission rate with capture (kgCO₂ GJ^-1)	7 - 28	17
Percent CO₂ reduction per GJ (%)	72 - 96	86
Plant efficiency with capture, LHV basis (%)	52 - 68	60
Capture energy requirement (% more input GJ ^-1 )	4 - 22	8
Cost of hydrogen without capture (US$ GJ^-1)	6.5 - 10.0	7.8
Cost of hydrogen with capture (US$ GJ^-1)	7.5 - 13.3	9.1
Increase in H2 cost with capture (US$ GJ ^-1)	0.3 - 3.3	1.3
Percent increase in H2 cost with capture (%)	5 - 33	15
Cost of net CO₂ captured (US$/tCO₂)	2 - 56	15
Capture cost confidence level	moderate to high