In 2019 the residential sector was responsible for 10.9% of Ireland's greenhouse gas emissions
This sector accounts for all emissions from fuel combustion in households for domestic space and hot water heating. Emissions in the residential sector decreased by 7.3% or 0.52 Mt of CO2eq in 2019 compared to 2018 emissions. All fuels used in household space and water heating, showed decreases in 2019; coal (28.6%), peat (6.6%), kerosene (4.2%), natural gas (2.1%) and biomass (18.0%). This was due to a comparatively milder winter with a lower heating demand than that of 2018.
A gradual upward trend in the emissions from the residential sector after 1998 was driven by an increase in housing stock, emissions reached a peak in 2010. The 2019 emissions in this sector are 13.2% lower than their 1990 level whereas the housing stock has increased by 77.7% in the same period. Winter heating demand is the most important variable determining emissions from this sector. 2019 was a warmer year than 2018 and residential consumption of fuels decreased.
Under the With Existing Measures (WEM) scenario, emissions from the residential sector are projected to decrease by 26.4% between 2020 and 2030 to 5.2 Mt CO2 eq
Emissions are projected to decrease by 47.0% between 2020 and 2030 to 3.8 Mt CO2 eq under the With Additional Measures scenario (shown as the line in the graph below). This scenario assumes full implementation of the measures in Ireland’s Climate Action Plan that includes upgrades to homes, deep retrofit and significant supports for domestic heat pumps.