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CSO statistical release, 18 April 2018, 11am

Non-Domestic Building Energy Ratings

Quarter 1 2018

Table A: Building Energy Ratings by Period of Construction (Non-Domestic)
% of row
Period of constructionEnergy rating 
ABCDEFGTotal
1900-19770730261591312,821
1978-199901137231271011,714
2000-200401644199487,083
2005-20091203716751512,915
2010-201482929168371,893
2015-20182739187216861

27% of non-domestic construction between 2015 and 2018 was rated "A"

Figure 1: Building Energy Ratings by Period of Construction (Non-Domestic) 1900-2018
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Building Energy Ratings (BER) audits were conducted for 861 non-domestic buildings constructed between 2015 and 2018 (see Table A). Over one quarter (27%) of these buildings received an “A” rating compared with 8% of non-domestic buildings constructed during 2010 to 2014 (see Figure 1). In contrast, 96% of domestic dwellings constructed between 2015-2018 received an "A" rating (separate CSO release). 

There were 51,529 non-domestic BER audits conducted in the period 2009 to 2018 (see Table 1). The profile of non-domestic BER audits conducted since 2009 was 1% awarded an "A" rating, 14% a "B" rating, and 35% with a “C” rating (see Table 3).

The most energy efficient building types audited during 2009-2018 were Schools and colleges with 24% awarded an “A” rating (see Table 3). The second most energy efficient buildings were Nursing residential homes and hostels with 7% rated “A”. The least energy efficient building types, defined by a “G” rating, were Workshops and maintenance depots (21%), Warehouses (14%) and Office buildings (13%) (see Figure 3).

The highest proportion of combined “A” and “B” ratings were in County Offaly at 21% (see Table 4). Kilkenny and Sligo had the highest proportion of “G” rated buildings at 17% (see Table 4).

Dublin 15 had the highest proportion of combined “A” and “B” ratings at 26% compared with 19% for Dublin 18 (see Table 5). Dublin 15 and 22 had the lowest proportion of non-domestic buildings with a “G” rating at 6%.  The highest proportion of “G” ratings, at 17%, were located in Dublin 8 (see Table 5).