Energy sector emissions comprises of emissions from electricity production (1A1aCO), contributing 40 per cent of the total emissions; road transport (1A3b-CO), 9 per cent of the total emissions; non-specific industries (1A2m-CO), 5 per cent of the total emissions; iron and steel (1A2a-CO2), 4 per cent of the total emissions; residential (1A4b-CO2), 3 per cent of the total emissions; refinery (1A1b-CO), 2 per cent of the total emissions; commercial/institutional (1A4a-CO2), 2 per cent of the total emissions and cement (1A2f-CO2), 2 per cent of the total emissions. Emissions from enteric fermentation (3A1-CH4) are 8 per cent of the total emissions, while rice cultivation (3C7-CH4), agricultural soils (3C4-NO) and manure management (3A2-NO) contribute 3, 3 and 1 per cent of the total emissions respectively. In the Industrial processes and product use sector, cement production (2A1-CO), aluminium production (2C3-CF) and lime production (2A2-CO2) contribute 4, 1 and 1 per cent of total emissions respectively (Figure 2.5). Figure 2.5 shows the top 15 key emission categories for India for 2016 in terms of CO2e.