The Energy sector is by far the largest producer of greenhouse gas emissions. In 2017, the Energy sector accounted for 66.7% of Armenia's total GHG emissions. The Energy sector includes emissions from all use of fuels to generate energy including fuel used in transport and the fugitive emissions related to the transmission, storage and distribution of natural gas. Table 2.2 Greenhouse gas emissions by gases and by sectors for 2017, Gg In addition to assessments based on Sectoral Approach the emissions of CO₂ from fuel combustion were also assessed by Reference Approach and the results were compared for checking purposes.