AN ASSESSMENT OF DIRECT AIR CAPTURE IN THE CLIMATE CHANGE MITIGATION SCENARIOS USING THE COMPUTABLE GENERAL EQUILIBRIUM MODEL

Abstract

 With the growing interest in emission reductions and technology developments, the direct air capture (DAC) is focused as an attractive mitigation options. This study modeled DAC in an economic model that considers multiple sectors and goods, and estimated economic and energy system impacts of DAC. The model developed in this research estimated that DAC increases to 4.9 Gt-CO₂ of carbon dioxide in 2050 under an emission reduction scenario that limits the global average temperature increase below 1.5 degrees Celsius. Then, DAC shows the effect of reducing the consumption of biomass and curbing food price increse. DAC also reduced the GDP losses associated with emission reductions by 21.7% and the loss calculated by the equivalent variation by 4.6%. The results of this study shows that DAC is an effective emission reduction technology for household consumption.