In 1995, the main categories of GHG emitters were residences (47.7%), transportation [land (33.2%), rail (2%) and domestic aviation (0.1%)], the production of electricity (12.1%), businesses and institutions (2.8%) and industry (2%). Emissions from the 1995 agriculture, forestry and fishing category are included in other categories. In 2015, the transport category, which represents 53% of total GHG emissions in the Energy sector, is the one that emits the most. It is the land transport sub-category that explains this increase compared to 1995, although the weights of the rail transport (1.2%) and domestic aviation (0.0%) sub-categories are down compared to those of 1995. The category of residences (21.9%) occupies the second place in terms of contribution to GHG emissions in the Energy sector after that of transport in 2015. This contribution has decreased compared to the estimate of 1995 (47.7%). The contribution of the electricity production category, which was 18.5% in 2015, is up compared to 1995 (12.1%). Similarly, emissions related to the category of businesses and institutions are on the rise. The contribution of the industry category (1.50%) in 2015 is lower than in 1995. CO emissions from the energy sector are generally on the rise over the period 1995-2017. With an estimate of approximately 603.75 Gg in 1995, CO emissions increased to nearly 3030.37 Gg in 2015 for the Energy sector as a whole, an increase of nearly 401.9%. This upward trend is linked to a sharp increase in the use of fossil fuels