Stationary energy sources are commonly the largest contributor to an emissions profile. These emissions come from the combustion of fuel (e.g. natural gas) in residential, commercial and institutional buildings and facilities, and manufacturing industries and construction, as well as power plants to generate grid-supplied energy. This sector also includes fugitive emissions, which typically occur during extraction, transformation, and transportation of primary fossil fuels, and emissions resulting from the generation of electricity which is lost during transmission and distribution.
Emissions from electricity consumption are counted within the locality where the electricity is consumed rather than where the electricity is generated (i.e. where the power plant is situated).