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 2016. Agriculture is the largest source of emissions, representing 37.8 per cent of total national emissions in 2023, based on provisional estimates. Both the transport and energy industries sectors represent 24.1 and 14.3 per cent respectively, of total greenhouse gas emissions in 2023. The transport sector has been the fastest growing source of greenhouse gas emissions. Ireland’s emissions in 2023 are below the 1990 baseline for the first time in three
decades. Further information about Ireland's greenhouse gas emissions is available on our website.
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