Greenhouse gases

Which greenhouse gases are included?

Which greenhouse gases are included?

The GHG Protocol recommends companies to include all six greenhouse gases stated in the Kyoto Protocol in their CO2 calculations.


The Kyoto Protocol lists six greenhouse gases: CO2 (carbon dioxide), CH4 (methane), N2O (nitrous oxide) and the group of HFCs, SF6 and PFCs, collectively known as halocarbons.


Other greenhouse gases include ozone and CFC gases, which are not listed in the Kyoto Protocol.


If some of the six greenhouse gases are not incorporated into the company strategy, it is important to explain why this is the case. CO2 (carbon dioxide) is the most important greenhouse gas by far. Greenhouse gas emissions are calculated in CO2 equivalents (abbreviated to CO2e) and vary significantly. For instance, the emission of 1 tonne of methane is equivalent to 25 tonnes of CO2. 1 tonne of SF6 is equivalent to 22,800 tonnes of CO2 according to the Fourth Assessment Report of the IPPC.


Company greenhouse gas emissions mainly stem from burning fossil fuels such as oil and coal. Moreover, emissions are produced by a number of chemical reactions in industrial processes – known as process-related emissions – and by evaporation or uncontrolled emissions of greenhouse gases – known as fugitive emissions. Process-related emissions stem from chemical reactions in the production of cement and tiles and consumption of lime and certain refrigerants, expansion agents, etc.


The fugitive emissions stem from evaporation from production and distribution of oil and natural gas and, to a modest extent, the use of organic solvents.



På Klimakompasset kan du få inspiration til at udarbejde en klimastrategi, som kan reducere din virksomheds udledning af CO2 og andre drivhusgasser.