Most GHG emissions attributed to the industrial sector and a significant share of those attributed to the residential, commercial and ‘‘other buildings” sectors result from the use of oil, natural gas and coal. As a result, more than half of all anthropogenic GHG emissions can be traced back to the energy sector. Specifically, electricity and heat generation (as well as industry) are the major sources of carbon dioxide (C02) emissions, accounting for 25 per cent and 21 per cent, respectively, of GHG emissions.