Based on IEA data (2016), total global GHG emissions in 2014 reached 47.6 gigatons of CO2. About 68 percent (32.4 gigatons) of the source of global GHG was from the global energy sector, starting from production process until fossil fuel consumption (Figure).
Meanwhile, global agriculture’s contribution only amounted to 11 percent, and industry 7 percent. Other sectors accounted for 14 percent, which included the burning of forest/peatland, emissions from peatland and waste.
This data shows that the use of fossil fuels constitutes the biggest global GHG emission source. Therefore, in order to reduce emissions, the global community has to be willing to reduce fossil fuel consumption or replace them with low-emission energy sources.