Ireland's emissions profile has changed considerably since 1990, with the contribution from transport more than doubling and the share from agriculture reducing since 1998. However, since 2011, emissions have trended upwards again with an overall peak in emissions reported in 2018. Agriculture is the largest source of emissions, representing 37.1 per cent of total national emissions in 2020, based on provisional estimates. Both the transport and energy industries sectors represent 17.9 and 15.0 per cent respectively, of total greenhouse gas emissions in 2020. The transport sector has been the fastest growing source of greenhouse gas emissions, showing a 100 per cent increase between 1990 and 2020. Further information about Ireland's greenhouse gas emissions is available on our website.
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