Note : The waste “other” subcategory includes biological treatment of solid waste (178 kt CO₂e), wastewater treatment and discharge (1,052 kt CO₂e), and waste incineration and open burning (1 kt CO₂e). The stationary combustion “other” subcategory includes public electricity and heat production (160 kt CO₂e), petroleum refining industries (8 kt CO₂e), mining (3 kt CO₂e), manufacturing industries (58 kt CO₂e), construction (0.6 kt CO₂e), commercial and institutional buildings (22 kt CO₂e), and agriculture and forestry (1 kt CO₂e). Last, transportation combustion includes aviation (4 kt CO₂e), road transportation (207 kt CO₂e), railways (9 kt CO₂e), marine (10 kt CO₂e) and other transportation (off- road vehicles and pipelines, 681 kt CO₂e). Not visible in the figure due to small quantities are IPPU methane emissions (143 kt CO₂e) and methane emissions from the agriculture subcategory of field burning of agricultural residues (41 kt CO₂e). Two additional agriculture subcategories — agricultural soils and liming, urea application and other carbon-containing fertilizers — have zero recorded methane emissions.

Source : Authors’ calculations using Environment and Climate Change Canada (2022c).