Jun 19, 2014 · Natural gas emits 50 to 60 percent less carbon dioxide (CO2) when combusted in a new, efficient natural gas power plant compared with emissions from a typical new coal plant [ 1 ]. Considering only tailpipe emissions, natural gas also emits 15 to 20 percent less heat-trapping gahaiqi than gasoline when burned in today’s typical vehicle [ 2 ].