Integrated assessment of energy efficiency technologies and CO2 abatement cost curves in China's road passenger car sector

Road transport is one of the main sources of energy consumption and CO2 emissions. It is essential to conserve energy and reduce emissions by promoting energy efficiency technologies (EETs) in this sector. This study first identifies EETs for the passenger cars and then classifies them into various technology bundles. It then analyzes the CO2-reduction potentials and emissions abatement costs of 55 type-path, 246 type path -technology, and 465 type-path-subtechnology bundles from micro-vehicular and macro-industrial perspectives during 2010-2030, based on which marginal abatement cost (MAC) curve for China's road passenger car sector is established. Results show that the cumulative CO2-reduction potential of EETs on passenger cars in China during 2010-2030 is about 2698.8 Mt, but only 4% is cost-effective. The EETs with low emissions abatement costs are mainly available in the spark ignition (SI), diesel, and hybrid electric vehicle (HEV) paths on the taxis and high-performance cars, and also in the transmission, vehicle body and SI technologies on the private cars, which could be promoted at present. The technologies with large emissions reduction potential are mainly available in the plug-in hybrid electric vehicle (PHEV) and electric vehicle (EV) paths, which would be the main channels for reducing carbon emissions in the long run. (C) 2015 Elsevier Ltd. All rights reserved.