Global emissions of HFCs, which represented 1.1% of total GHG emissions in 2004, are projected to reach 2.2% in 2015, despite significant growth in their use.
The IPCC Report provides very useful figures on greenhouse gas emissions, including fluorinated gases (CFCs, HCFCs and HFCs).
In 2004, the global emissions of the 6 gases covered by the Kyoto Protocol (CO2, CH4, N2O, HFCs, PFCs and SF6) 49000 million tonnes CO2-equivalent, compared with 28700 million tonnes CO2-eq in 1970 (+70%).
Among them, HFC emissions were 550 million tonnes CO2-eq (1.1% of total GHG emissions) in 2004 and are projected to be 1200 million tones CO2-eq by 2015.
CFCs and HCFCs, ozone-depleting substances (ODS) covered by the Montreal Protocol, are also greenhouse gases. Emissions of these decreased from some 20% of total GHG emissions by 1975, down to 4% in 2000, due to the phase-out of CFCs – a significant contribution to the reduction of GHG emissions.