In this study, co-benefits of GHG mitigation are presented in terms
of SOx and NOx migitation. The cumulative SOx and NOx emissions in
all scenarios during 2005–2050 are presented in Table 9. Most SOx emissions are emitted from coal and oil combustion while most NOx
emissions are emitted from oil combustion. Results show that the GHG
emissions under emission trading without CCS (CM30T100 and
CM50T100 scenarios) will be dramatically decreased. The CCS technologies
capture only CO2, but not SOx and NOx emissions. The
emission trading would result in lower emissions than CCS because
power generation under emission trading policy deploys alternative
technologies such as nuclear and biomass, which do not account for
SOx and NOx emissions.