04/18/2024 | Press release | Distributed by Public on 04/18/2024 04:06
The number of audits reported in January to March (Q1) 2024 was 10% higher than in Q1 2023 (See Table A and Table 1).
Dwellings built between 2015-2019 and 2020-2024 were substantially more energy efficient than those from earlier periods, with 95% and 99% respectively receiving an A rating (See Figure 4 and Table 2).
Electricity was the main space heating fuel for 90% of audited dwellings constructed between 2020-2024 (See Figure 1 and Table 9).
The highest proportions of A rated dwellings were in Kildare (26%), Meath (24%), and Dublin County (23%), while the lowest was in Leitrim (3%) (See Table 4).
In the Dublin postal districts, the highest proportions of A ratings were in Dublin 18 (37%), Dublin 20 (28%), and Dublin 13 (26%) (See Table 5).
The Central Statistics Office (CSO) has today (18 April 2024) released Domestic Building Energy Ratings for Quarter 1 (Q1) 2024.
Commenting on the release, Kevin Hunt, Statistician in the Climate and Energy Division, said: "The number of domestic Building Energy Rating (BER) audits reported in January to March (Q1) 2024 was 35,508. This was 10% higher than the 32,206 audits reported in Q1 2023. In total, 1.4 million BER audits were published from 2009-2024 (See Table A and Table 1).
Of the 1.2 million unique dwellings to receive an audit since 2009, 14% received an A rating in their most recent audit, 14% a B rating, and 34% a C rating (See Table 2).
A ratings were given to 99% of audited dwellings built between 2020-2024 and 95% of those built between 2015-2019. In comparison, 35% of audited dwellings built between 2010-2014 received an A rating, and just 3% of those from 2005-2009 (See Figure 4 and Table 2).
Electricity was the main space heating fuel for 90% of audited dwellings constructed between 2020-2024. This is substantially higher than the proportion among dwellings constructed between 2015-2019 (49%) and 2010-2014 (20%). Mains gas was the main space heating fuel for 9% of audited dwellings built between 2020-2024, compared with 45% of those built between 2015-2019. Heating oil was the main space heating fuel for 5% of dwellings built between 2015-2019 and 0% of dwellings built between 2020-2024 (See Figure 1 and Table 9).
By county, the highest proportions of A rated dwellings were in Kildare (26%), Meath (24%), and Dublin County (23%). Leitrim had the lowest proportion of A ratings, at 3%, followed by Cork City (4%). Cork City also had the highest average dwelling age, at 46 years (See Table 4).
The highest proportions of G rated dwellings were in counties Roscommon (12%), Leitrim (11%), and Tipperary (10%) (See Table 4).
Among Dublin postal districts, the highest proportions of A ratings were in Dublin 18 (37%), Dublin 20 (28%), and Dublin 13 (26%). The highest proportions of G ratings were in Dublin 06 (14%) and Dublin 07 (13%). The highest average dwelling age was 62 years in Dublin 06, and the lowest was 15 years in Dublin 18 (See Table 5).
The average floor area for all dwellings with a BER audit was 115 square metres. The dwelling type with the largest average floor area was detached houses (165 square metres), and the smallest was basement dwellings (60 square metres) (See Table 12).
Some dwellings have had more than one BER audit conducted. Of these, 12% received an A or B rating in their earliest assessment, while 35% received an A or B rating in their most recent assessment. In contrast, 16% of dwellings with multiple audits were rated F or G in their first assessment, compared with 4% of the final ratings (See Table 15)."
Table A: Number of Domestic BER certificates | ||||||
number | ||||||
Period | 2020 | 2021 | 2022 | 2023 | 2024 | % change 2024/2023 |
January | 5,893 | 3,772 | 5,942 | 8,836 | 10,680 | 21% |
February | 7,625 | 4,796 | 7,372 | 11,077 | 12,619 | 14% |
March | 7,176 | 6,044 | 8,386 | 12,293 | 12,209 | -1% |
Quarter 1 | 20,694 | 14,612 | 21,700 | 32,206 | 35,508 | 10% |
Mains Gas | Heating Oil | Electricity | |
2000-2004 | 40 | 36 | 20 |
2005-2009 | 44 | 32 | 19 |
2010-2014 | 44 | 33 | 20 |
2015-2019 | 45 | 5 | 49 |
2020-2024 | 9 | 0 | 90 |
Earliest | Latest | |
A | 2 | 7 |
B1 | 1 | 5 |
B2 | 3 | 8 |
B3 | 6 | 15 |
C1 | 9 | 15 |
C2 | 11 | 13 |
C3 | 12 | 11 |
D1 | 13 | 9 |
D2 | 12 | 7 |
E1 | 8 | 4 |
E2 | 7 | 2 |
F | 7 | 2 |
G | 9 | 2 |
National Data | BER Database | |
A | 10 | 14 |
B1 | 2 | 2 |
B2 | 4 | 4 |
B3 | 8 | 8 |
C1 | 10 | 11 |
C2 | 11 | 12 |
C3 | 11 | 11 |
D1 | 11 | 10 |
D2 | 10 | 9 |
E1 | 6 | 5 |
E2 | 5 | 4 |
F | 5 | 4 |
G | 8 | 6 |
1Dwellings with BERs have been weighted using 2016 Census of Population data to estimate a BER profile for All Dwellings at National level (See Background Notes).
A | B | C | D | E | F-G | |
1700-1977 | 2 | 7 | 20 | 23 | 18 | 30 |
1978-1999 | 2 | 11 | 41 | 31 | 10 | 5 |
2000-2004 | 1 | 17 | 58 | 18 | 4 | 1 |
2005-2009 | 3 | 39 | 47 | 8 | 2 | 0 |
2010-2014 | 35 | 56 | 7 | 1 | 0 | 0 |
2015-2019 | 95 | 4 | 0 | 0 | 0 | 0 |
2020-2024 | 99 | 1 | 0 | 0 | 0 | 0 |
Table 1 Domestic BER Certificates (2009-2024) 1 | |||||||||||||||||
number | |||||||||||||||||
Period | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
January | 4,118 | 4,707 | 8,589 | 6,538 | 6,993 | 7,014 | 6,533 | 5,271 | 5,692 | 5,183 | 5,527 | 5,893 | 3,772 | 5,942 | 8,836 | 10,680 | 101,288 |
February | 6,342 | 5,663 | 9,052 | 6,316 | 8,537 | 7,554 | 7,674 | 6,878 | 6,821 | 6,503 | 6,902 | 7,625 | 4,796 | 7,372 | 11,077 | 12,619 | 121,731 |
March | 8,782 | 6,182 | 8,964 | 6,519 | 8,209 | 8,396 | 7,278 | 7,548 | 7,636 | 6,525 | 7,223 | 7,176 | 6,044 | 8,386 | 12,293 | 12,209 | 129,370 |
April | 8,082 | 5,495 | 7,797 | 4,451 | 8,301 | 8,741 | 7,598 | 7,407 | 7,140 | 7,060 | 7,250 | 1,997 | 6,272 | 8,392 | 10,418 | 106,401 | |
May | 7,954 | 5,481 | 8,884 | 5,888 | 8,654 | 8,729 | 7,719 | 7,956 | 8,181 | 8,400 | 8,336 | 2,453 | 7,790 | 10,511 | 12,983 | 119,919 | |
June | 8,735 | 5,805 | 7,476 | 4,865 | 7,269 | 8,214 | 7,998 | 7,451 | 7,702 | 7,592 | 7,566 | 5,797 | 7,935 | 11,253 | 12,402 | 118,060 | |
July | 8,786 | 5,943 | 7,249 | 5,540 | 7,103 | 9,398 | 7,670 | 6,561 | 7,125 | 7,509 | 8,356 | 7,608 | 8,100 | 10,465 | 12,420 | 119,833 | |
August | 7,260 | 6,440 | 7,530 | 5,046 | 6,970 | 8,165 | 7,647 | 7,028 | 7,239 | 7,149 | 8,224 | 6,887 | 6,781 | 10,922 | 12,476 | 115,764 | |
September | 7,484 | 7,417 | 8,836 | 4,963 | 8,274 | 9,916 | 8,356 | 7,664 | 7,971 | 7,225 | 8,405 | 8,771 | 8,164 | 12,420 | 13,567 | 129,433 | |
October | 6,570 | 8,378 | 9,538 | 6,684 | 8,977 | 10,764 | 9,217 | 7,919 | 8,050 | 8,300 | 10,788 | 8,391 | 9,051 | 13,077 | 13,418 | 139,122 | |
November | 6,945 | 11,550 | 9,591 | 8,785 | 9,576 | 10,884 | 8,389 | 9,000 | 8,383 | 8,260 | 6,175 | 8,061 | 8,822 | 14,720 | 14,266 | 143,407 | |
December | 6,297 | 7,986 | 9,452 | 6,347 | 6,917 | 7,764 | 7,297 | 6,063 | 5,675 | 5,733 | 6,254 | 6,467 | 6,047 | 9,388 | 9,636 | 107,323 | |
Total | 87,355 | 81,047 | 102,958 | 71,942 | 95,780 | 105,539 | 93,376 | 86,746 | 87,615 | 85,439 | 91,006 | 77,126 | 83,574 | 122,848 | 143,792 | 35,508 | 1,451,651 |
1 Includes all Certificates for Dwellings |
Table 2 BERs by Period of Construction (2009-2024) | ||||||||||||||
% of row | ||||||||||||||
Period of Construction | Energy Rating | Total | ||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | ||
1700-1899 | 1 | 1 | 2 | 2 | 3 | 4 | 5 | 7 | 10 | 9 | 9 | 13 | 34 | 30,274 |
1900-1929 | 2 | 1 | 1 | 3 | 3 | 4 | 5 | 7 | 10 | 9 | 9 | 13 | 33 | 65,957 |
1930-1949 | 2 | 1 | 2 | 4 | 5 | 6 | 7 | 9 | 11 | 9 | 9 | 11 | 22 | 54,962 |
1950-1966 | 2 | 1 | 2 | 4 | 6 | 7 | 8 | 11 | 13 | 10 | 10 | 11 | 15 | 85,598 |
1967-1977 | 2 | 1 | 2 | 5 | 7 | 9 | 11 | 14 | 15 | 10 | 8 | 8 | 7 | 108,204 |
1978-1982 | 2 | 1 | 2 | 6 | 9 | 13 | 15 | 17 | 16 | 8 | 5 | 4 | 3 | 66,814 |
1983-1993 | 2 | 1 | 3 | 6 | 10 | 14 | 16 | 18 | 15 | 7 | 4 | 3 | 2 | 112,050 |
1994-1999 | 2 | 2 | 3 | 7 | 12 | 16 | 18 | 18 | 12 | 5 | 3 | 2 | 1 | 121,970 |
2000-2004 | 1 | 2 | 4 | 11 | 18 | 21 | 18 | 12 | 6 | 3 | 2 | 1 | 0 | 191,841 |
2005-2009 | 3 | 4 | 12 | 23 | 23 | 16 | 8 | 5 | 3 | 1 | 1 | 0 | 0 | 181,323 |
2010-2014 | 35 | 27 | 19 | 10 | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 14,216 |
2015-2019 | 95 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 59,186 |
2020-2024 | 99 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 79,357 |
Total | 14 | 2 | 4 | 8 | 11 | 12 | 11 | 10 | 9 | 5 | 4 | 4 | 6 | 1,171,752 |
- No dwelling received this BER for this period of construction |
Table 3 BERs by Type of Dwelling (2009-2024) | ||||||||||||||
% of row | ||||||||||||||
Dwelling Type | Energy Rating | Total | ||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | ||
Apartment | 0 | 5 | 11 | 10 | 10 | 8 | 10 | 10 | 11 | 6 | 6 | 5 | 8 | 2,725 |
Ground-floor apartment | 14 | 1 | 3 | 7 | 10 | 11 | 11 | 11 | 11 | 7 | 5 | 4 | 6 | 63,095 |
Mid-floor apartment | 25 | 3 | 8 | 11 | 11 | 11 | 9 | 8 | 5 | 3 | 2 | 2 | 2 | 86,321 |
Top-floor apartment | 12 | 1 | 4 | 8 | 10 | 10 | 10 | 11 | 11 | 6 | 4 | 4 | 9 | 65,109 |
Basement Dwelling | 5 | 0 | 2 | 4 | 9 | 7 | 6 | 7 | 7 | 10 | 8 | 9 | 25 | 367 |
Maisonette | 19 | 3 | 7 | 12 | 12 | 10 | 8 | 8 | 8 | 4 | 2 | 3 | 6 | 13,686 |
House | 1 | 2 | 3 | 9 | 12 | 14 | 14 | 13 | 11 | 5 | 4 | 4 | 8 | 29,473 |
Detached house | 10 | 3 | 5 | 9 | 10 | 11 | 11 | 10 | 9 | 5 | 4 | 4 | 9 | 344,583 |
Semi-detached house | 16 | 2 | 3 | 7 | 12 | 14 | 12 | 11 | 8 | 5 | 4 | 4 | 3 | 315,261 |
End of terrace house | 17 | 2 | 2 | 6 | 10 | 11 | 10 | 10 | 9 | 5 | 5 | 5 | 7 | 88,466 |
Mid-terrace house | 12 | 1 | 4 | 9 | 12 | 11 | 10 | 10 | 9 | 6 | 5 | 5 | 6 | 162,666 |
Total | 14 | 2 | 4 | 8 | 11 | 12 | 11 | 10 | 9 | 5 | 4 | 4 | 6 | 1,171,752 |
Table 4 BERs by County (2009-2024) | |||||||||||||||
% of row | |||||||||||||||
County | Energy Rating | Average age | |||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | Total | ||
Carlow | 10 | 2 | 3 | 8 | 12 | 13 | 12 | 11 | 8 | 4 | 4 | 4 | 6 | 15,049 | 32 |
Dublin 01-24 | 16 | 2 | 4 | 8 | 10 | 11 | 10 | 10 | 10 | 6 | 5 | 5 | 5 | 266,430 | 37 |
Dublin County | 23 | 2 | 5 | 9 | 11 | 11 | 10 | 9 | 7 | 4 | 3 | 3 | 3 | 88,565 | 27 |
Kildare | 26 | 2 | 4 | 8 | 11 | 11 | 10 | 9 | 7 | 3 | 2 | 2 | 3 | 54,482 | 22 |
Kilkenny | 11 | 2 | 4 | 9 | 12 | 12 | 11 | 10 | 9 | 5 | 4 | 4 | 7 | 18,930 | 36 |
Laois | 13 | 3 | 4 | 9 | 12 | 13 | 11 | 9 | 7 | 4 | 4 | 4 | 7 | 18,189 | 29 |
Longford | 5 | 3 | 3 | 8 | 12 | 13 | 11 | 12 | 9 | 5 | 5 | 6 | 9 | 9,591 | 32 |
Louth | 15 | 3 | 5 | 10 | 14 | 13 | 10 | 9 | 7 | 4 | 3 | 3 | 5 | 33,204 | 32 |
Meath | 24 | 2 | 4 | 9 | 13 | 13 | 10 | 8 | 6 | 3 | 2 | 2 | 4 | 45,207 | 23 |
Offaly | 10 | 2 | 3 | 6 | 10 | 12 | 10 | 9 | 9 | 6 | 6 | 7 | 9 | 15,638 | 35 |
Westmeath | 8 | 2 | 4 | 8 | 10 | 12 | 13 | 12 | 9 | 5 | 4 | 5 | 8 | 21,031 | 33 |
Wexford | 11 | 2 | 3 | 6 | 10 | 13 | 13 | 12 | 10 | 6 | 4 | 4 | 7 | 38,303 | 31 |
Wicklow | 20 | 2 | 4 | 8 | 10 | 10 | 10 | 9 | 8 | 5 | 4 | 4 | 5 | 36,073 | 32 |
Clare | 7 | 2 | 4 | 7 | 9 | 12 | 13 | 12 | 10 | 6 | 5 | 4 | 8 | 28,240 | 34 |
Cork City | 4 | 2 | 4 | 9 | 12 | 12 | 11 | 11 | 10 | 7 | 5 | 5 | 7 | 21,194 | 46 |
Cork County | 14 | 3 | 5 | 11 | 13 | 11 | 9 | 8 | 8 | 4 | 3 | 3 | 7 | 110,984 | 35 |
Kerry | 9 | 2 | 4 | 8 | 10 | 11 | 12 | 12 | 10 | 6 | 4 | 4 | 8 | 36,363 | 32 |
Limerick City | 7 | 2 | 4 | 9 | 13 | 13 | 13 | 12 | 10 | 5 | 4 | 4 | 5 | 21,589 | 39 |
Limerick County | 9 | 2 | 3 | 7 | 11 | 12 | 13 | 12 | 10 | 5 | 4 | 4 | 7 | 27,747 | 33 |
Tipperary | 6 | 3 | 3 | 7 | 10 | 11 | 11 | 11 | 10 | 6 | 5 | 6 | 10 | 36,244 | 41 |
Waterford City | 9 | 2 | 3 | 8 | 13 | 13 | 13 | 13 | 10 | 5 | 3 | 3 | 5 | 13,427 | 38 |
Waterford County | 12 | 3 | 4 | 8 | 11 | 11 | 11 | 11 | 10 | 5 | 4 | 4 | 6 | 17,577 | 36 |
Galway City | 10 | 2 | 3 | 7 | 11 | 13 | 15 | 14 | 10 | 5 | 4 | 4 | 3 | 18,395 | 27 |
Galway County | 10 | 2 | 4 | 8 | 11 | 12 | 12 | 11 | 9 | 5 | 4 | 4 | 8 | 44,198 | 30 |
Leitrim | 3 | 2 | 3 | 8 | 12 | 13 | 11 | 9 | 8 | 5 | 5 | 6 | 11 | 8,793 | 36 |
Mayo | 7 | 2 | 3 | 6 | 9 | 12 | 13 | 12 | 11 | 5 | 5 | 5 | 9 | 30,992 | 35 |
Roscommon | 6 | 2 | 3 | 7 | 11 | 13 | 13 | 10 | 8 | 5 | 4 | 6 | 12 | 14,222 | 36 |
Sligo | 8 | 3 | 3 | 8 | 10 | 12 | 11 | 11 | 10 | 6 | 5 | 5 | 8 | 17,656 | 34 |
Cavan | 6 | 2 | 4 | 10 | 15 | 14 | 11 | 10 | 8 | 5 | 4 | 4 | 8 | 16,893 | 31 |
Donegal | 7 | 2 | 3 | 6 | 12 | 14 | 13 | 11 | 9 | 5 | 4 | 5 | 8 | 35,270 | 32 |
Monaghan | 12 | 3 | 4 | 9 | 11 | 10 | 10 | 11 | 9 | 5 | 4 | 4 | 8 | 11,276 | 36 |
Total | 14 | 2 | 4 | 8 | 11 | 12 | 11 | 10 | 9 | 5 | 4 | 4 | 6 | 1,171,752 | 33 |
Table 5 BERs by Dublin Postal District (2009-2024) | |||||||||||||||
% of row | |||||||||||||||
Dublin Postal District | Energy Rating | Average age | |||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | Total | ||
Dublin 1 | 15 | 2 | 4 | 7 | 8 | 10 | 10 | 11 | 11 | 6 | 4 | 4 | 7 | 10,475 | 33 |
Dublin 2 | 17 | 2 | 5 | 7 | 9 | 10 | 10 | 11 | 9 | 6 | 4 | 4 | 5 | 6,041 | 33 |
Dublin 3 | 5 | 1 | 3 | 7 | 9 | 9 | 10 | 10 | 11 | 8 | 7 | 8 | 11 | 10,271 | 60 |
Dublin 4 | 8 | 1 | 5 | 8 | 9 | 10 | 11 | 12 | 12 | 7 | 5 | 6 | 6 | 12,661 | 47 |
Dublin 5 | 6 | 2 | 3 | 7 | 9 | 10 | 11 | 13 | 12 | 9 | 8 | 7 | 4 | 10,768 | 46 |
Dublin 6 | 8 | 1 | 3 | 6 | 7 | 8 | 9 | 10 | 12 | 8 | 6 | 8 | 14 | 10,325 | 62 |
Dublin 6W | 14 | 1 | 4 | 8 | 8 | 8 | 9 | 11 | 10 | 7 | 6 | 7 | 7 | 6,296 | 49 |
Dublin 7 | 6 | 1 | 2 | 4 | 8 | 10 | 9 | 12 | 11 | 8 | 8 | 9 | 13 | 14,526 | 60 |
Dublin 8 | 10 | 2 | 5 | 8 | 8 | 9 | 9 | 11 | 11 | 7 | 6 | 6 | 9 | 17,754 | 47 |
Dublin 9 | 17 | 1 | 3 | 7 | 8 | 9 | 9 | 10 | 10 | 7 | 6 | 6 | 6 | 14,336 | 44 |
Dublin 10 | 6 | 1 | 2 | 7 | 13 | 14 | 12 | 12 | 10 | 7 | 6 | 6 | 5 | 4,948 | 49 |
Dublin 11 | 14 | 1 | 6 | 12 | 12 | 11 | 10 | 9 | 8 | 5 | 4 | 4 | 3 | 14,936 | 32 |
Dublin 12 | 11 | 1 | 3 | 6 | 7 | 8 | 9 | 11 | 11 | 8 | 8 | 8 | 8 | 14,024 | 53 |
Dublin 13 | 26 | 2 | 5 | 10 | 10 | 9 | 9 | 9 | 8 | 4 | 3 | 3 | 2 | 10,423 | 27 |
Dublin 14 | 15 | 3 | 6 | 8 | 8 | 9 | 9 | 9 | 10 | 7 | 5 | 5 | 4 | 12,168 | 39 |
Dublin 15 | 21 | 2 | 5 | 11 | 14 | 14 | 11 | 10 | 7 | 3 | 1 | 1 | 1 | 27,429 | 18 |
Dublin 16 | 17 | 2 | 6 | 10 | 10 | 12 | 11 | 11 | 9 | 4 | 3 | 3 | 1 | 11,697 | 29 |
Dublin 17 | 17 | 1 | 6 | 9 | 14 | 16 | 12 | 10 | 7 | 4 | 2 | 2 | 1 | 5,483 | 24 |
Dublin 18 | 37 | 3 | 9 | 12 | 11 | 8 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | 16,671 | 15 |
Dublin 20 | 28 | 2 | 5 | 7 | 7 | 7 | 7 | 10 | 9 | 7 | 4 | 4 | 3 | 3,627 | 28 |
Dublin 22 | 16 | 1 | 2 | 6 | 10 | 13 | 13 | 14 | 13 | 6 | 4 | 2 | 2 | 10,079 | 27 |
Dublin 24 | 20 | 2 | 3 | 7 | 12 | 13 | 12 | 12 | 9 | 5 | 3 | 2 | 1 | 21,492 | 23 |
Total | 16 | 2 | 4 | 8 | 10 | 11 | 10 | 10 | 10 | 6 | 5 | 5 | 5 | 266,430 | 37 |
Table 6 BERs by Main Space Heating Fuel (2009-2024) | ||||||||||||||
% of row | ||||||||||||||
Fuel Type | Energy Rating | Total | ||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | ||
Mains Gas | 8 | 2 | 6 | 13 | 16 | 15 | 12 | 10 | 7 | 4 | 3 | 3 | 2 | 424,638 |
Bulk LPG | 2 | 3 | 8 | 19 | 21 | 16 | 11 | 7 | 5 | 2 | 2 | 1 | 1 | 14,612 |
Bottled LPG | 1 | 2 | 4 | 10 | 13 | 12 | 12 | 12 | 11 | 5 | 5 | 5 | 9 | 1,170 |
Heating Oil | 1 | 2 | 4 | 9 | 12 | 14 | 14 | 13 | 11 | 6 | 4 | 5 | 5 | 406,424 |
Electricity | 43 | 3 | 2 | 2 | 3 | 5 | 6 | 8 | 8 | 5 | 4 | 4 | 9 | 256,902 |
Coal | - | - | 0 | 0 | 0 | 1 | 1 | 5 | 11 | 12 | 14 | 18 | 38 | 2,963 |
Smokeless Fuel | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 11 | 12 | 12 | 16 | 43 | 7,224 |
Peat | - | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 9 | 11 | 12 | 16 | 44 | 1,380 |
Wood Pellets & Chips | 3 | 5 | 9 | 19 | 14 | 15 | 11 | 8 | 6 | 3 | 2 | 3 | 2 | 1,937 |
Wood Logs | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 10 | 11 | 9 | 9 | 10 | 26 | 666 |
Solid Multi-Fuel | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 7 | 12 | 13 | 12 | 14 | 38 | 32,867 |
Total | 13 | 2 | 4 | 8 | 11 | 12 | 11 | 10 | 9 | 5 | 4 | 4 | 6 | 1,150,783 |
- No dwelling received this BER for this main space heating fuel type |
Table 7 BERs by Main Water Heating Fuel (2009-2024) | ||||||||||||||
% of row | ||||||||||||||
Fuel Type | Energy Rating | Total | ||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | ||
Mains Gas | 8 | 2 | 6 | 13 | 16 | 15 | 12 | 10 | 7 | 4 | 3 | 3 | 2 | 422,506 |
Bulk LPG | 3 | 3 | 8 | 19 | 21 | 16 | 11 | 8 | 5 | 2 | 2 | 1 | 1 | 14,560 |
Bottled LPG | 1 | 1 | 4 | 11 | 14 | 13 | 12 | 11 | 11 | 6 | 5 | 5 | 8 | 1,269 |
Heating Oil | 1 | 2 | 4 | 9 | 12 | 14 | 14 | 13 | 11 | 6 | 4 | 5 | 5 | 402,801 |
Electricity | 41 | 3 | 2 | 2 | 3 | 5 | 6 | 8 | 8 | 5 | 4 | 4 | 11 | 266,706 |
Coal | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 6 | 12 | 13 | 15 | 18 | 29 | 2,798 |
Smokeless Fuel | 0 | - | 0 | 0 | 0 | 1 | 2 | 5 | 13 | 14 | 14 | 18 | 32 | 6,016 |
Peat | - | - | 0 | 0 | 0 | 1 | 2 | 5 | 10 | 12 | 13 | 16 | 41 | 1,394 |
Wood Pellets & Chips | 3 | 5 | 9 | 19 | 14 | 15 | 11 | 8 | 6 | 3 | 2 | 3 | 2 | 1,894 |
Wood Logs | 3 | 3 | 2 | 4 | 4 | 4 | 5 | 12 | 12 | 10 | 9 | 10 | 22 | 599 |
Solid Multi-Fuel | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 7 | 13 | 14 | 13 | 16 | 32 | 30,240 |
Total | 13 | 2 | 4 | 8 | 11 | 12 | 11 | 10 | 9 | 5 | 4 | 4 | 6 | 1,150,783 |
- No dwelling received this BER for this main water heating fuel type |
Table 8 Main Space Heating Fuel by County (2009-2024) | ||||||
% of row | ||||||
County | Fuel Type | |||||
Mains Gas | Heating Oil | Electricity | Solid Fuel | LPG | Total | |
Carlow | 32 | 44 | 18 | 4 | 1 | 15,038 |
Dublin 01-24 | 68 | 5 | 26 | 1 | 0 | 251,545 |
Dublin County | 69 | 10 | 20 | 0 | 0 | 85,798 |
Kildare | 42 | 30 | 26 | 2 | 1 | 54,426 |
Kilkenny | 26 | 47 | 18 | 6 | 2 | 18,864 |
Laois | 30 | 41 | 19 | 10 | 1 | 18,153 |
Longford | 1 | 63 | 22 | 10 | 3 | 9,538 |
Louth | 51 | 31 | 15 | 2 | 1 | 32,899 |
Meath | 42 | 34 | 21 | 2 | 1 | 45,168 |
Offaly | 11 | 52 | 19 | 18 | 1 | 15,512 |
Westmeath | 13 | 53 | 22 | 10 | 3 | 20,974 |
Wexford | 1 | 65 | 23 | 8 | 2 | 38,165 |
Wicklow | 37 | 34 | 25 | 3 | 1 | 35,744 |
Clare | 12 | 56 | 21 | 9 | 3 | 28,185 |
Cork City | 72 | 9 | 17 | 2 | 0 | 21,044 |
Cork County | 36 | 36 | 23 | 3 | 2 | 110,564 |
Kerry | 1 | 60 | 26 | 9 | 5 | 36,144 |
Limerick City | 55 | 19 | 22 | 3 | 0 | 21,410 |
Limerick County | 23 | 50 | 20 | 7 | 1 | 27,663 |
Tipperary | 13 | 61 | 16 | 8 | 1 | 36,142 |
Waterford City | 58 | 14 | 25 | 2 | 0 | 13,381 |
Waterford County | 17 | 52 | 24 | 5 | 2 | 17,526 |
Galway City | 18 | 40 | 37 | 4 | 2 | 18,272 |
Galway County | 6 | 63 | 23 | 6 | 2 | 44,083 |
Leitrim | 1 | 66 | 19 | 9 | 5 | 8,788 |
Mayo | 3 | 70 | 18 | 7 | 2 | 30,917 |
Roscommon | 4 | 69 | 16 | 8 | 3 | 14,216 |
Sligo | 1 | 62 | 25 | 7 | 5 | 17,620 |
Cavan | 9 | 65 | 15 | 6 | 5 | 16,804 |
Donegal | 0 | 75 | 15 | 6 | 4 | 34,965 |
Monaghan | 9 | 67 | 18 | 4 | 2 | 11,235 |
Total | 37 | 35 | 22 | 4 | 1 | 1,150,783 |
Table 9 Main Space Heating Fuel by Period of Construction (2009-2024) | ||||||
% of row | ||||||
Period of Construction | Fuel Type | Total | ||||
Mains Gas | Heating Oil | Electricity | Solid Fuel | LPG | ||
1700-1899 | 28 | 38 | 24 | 9 | 1 | 29,701 |
1900-1929 | 28 | 39 | 23 | 9 | 1 | 65,076 |
1930-1949 | 43 | 37 | 11 | 8 | 1 | 54,801 |
1950-1966 | 47 | 38 | 8 | 5 | 1 | 85,292 |
1967-1977 | 39 | 48 | 7 | 5 | 1 | 107,498 |
1978-1982 | 34 | 52 | 6 | 7 | 1 | 66,538 |
1983-1993 | 33 | 46 | 13 | 6 | 2 | 111,528 |
1994-1999 | 33 | 38 | 24 | 4 | 1 | 121,205 |
2000-2004 | 40 | 36 | 20 | 3 | 1 | 190,848 |
2005-2009 | 44 | 32 | 19 | 2 | 3 | 177,217 |
2010-2014 | 44 | 33 | 20 | 1 | 2 | 13,418 |
2015-2019 | 45 | 5 | 49 | 0 | 0 | 55,185 |
2020-2024 | 9 | 0 | 90 | 0 | 0 | 72,476 |
Total | 37 | 35 | 22 | 4 | 1 | 1,150,783 |
Table 10 Main Space Heating Fuel by Type of Dwelling (2009-2024) | ||||||
% of row | ||||||
Dwelling Type | Fuel Type | Total | ||||
Mains Gas | Heating Oil | Electricity | Solid Fuel | LPG | ||
Apartment | 44 | 5 | 48 | 1 | 2 | 2,595 |
Ground-floor apartment | 43 | 5 | 49 | 1 | 2 | 59,326 |
Mid-floor apartment | 34 | 0 | 65 | 0 | 1 | 74,727 |
Top-floor apartment | 38 | 2 | 58 | 1 | 2 | 61,261 |
Basement Dwelling | 23 | 9 | 63 | 1 | 4 | 330 |
Maisonette | 48 | 5 | 44 | 1 | 2 | 13,497 |
House | 16 | 72 | 4 | 5 | 2 | 29,458 |
Detached house | 14 | 65 | 13 | 5 | 2 | 344,312 |
Semi-detached house | 47 | 33 | 15 | 4 | 1 | 314,795 |
End of terrace house | 56 | 20 | 19 | 4 | 1 | 88,236 |
Mid-terrace house | 58 | 20 | 16 | 5 | 1 | 162,246 |
Total | 37 | 35 | 22 | 4 | 1 | 1,150,783 |
Table 11 Type of Dwelling by Period of Construction (2009-2024) | |||||
% of row | |||||
Period | Apartment | Detached house | Semi-detached house | Terraced house | Total |
1700-1899 | 18 | 40 | 9 | 33 | 29,701 |
1900-1929 | 16 | 39 | 11 | 34 | 65,076 |
1930-1949 | 7 | 32 | 22 | 39 | 54,801 |
1950-1966 | 6 | 30 | 31 | 34 | 85,292 |
1967-1977 | 5 | 36 | 33 | 26 | 107,498 |
1978-1982 | 6 | 44 | 27 | 23 | 66,538 |
1983-1993 | 11 | 41 | 28 | 20 | 111,528 |
1994-1999 | 21 | 35 | 33 | 11 | 121,205 |
2000-2004 | 26 | 31 | 29 | 15 | 190,848 |
2005-2009 | 34 | 26 | 23 | 16 | 177,217 |
2010-2014 | 15 | 50 | 21 | 15 | 13,418 |
2015-2019 | 12 | 25 | 37 | 25 | 55,185 |
2020-2024 | 30 | 15 | 32 | 23 | 72,476 |
Total | 18 | 32 | 27 | 22 | 1,150,783 |
Table 12 Average Floor Area by Period of Construction and Type of Dwelling (2009-2024) | ||||||||||||
m2 | ||||||||||||
Period | Apartment | Ground-floor apartment | Mid-floor apartment | Top-floor apartment | Basement Dwelling | Maisonette | House | Detached house | Semi-detached house | End of terrace house | Mid-terrace house | All dwelling types |
1700-1899 | 65 | 52 | 45 | 57 | 52 | 104 | 147 | 163 | 151 | 120 | 108 | 124 |
1900-1929 | 62 | 47 | 43 | 53 | 44 | 86 | 119 | 129 | 125 | 99 | 92 | 103 |
1930-1949 | 49 | 59 | 46 | 52 | 44 | 73 | 112 | 124 | 115 | 86 | 83 | 101 |
1950-1966 | 71 | 60 | 56 | 57 | 67 | 68 | 116 | 130 | 118 | 90 | 87 | 108 |
1967-1977 | 70 | 62 | 60 | 56 | 84 | 67 | 131 | 143 | 112 | 87 | 86 | 113 |
1978-1982 | 67 | 64 | 63 | 56 | 77 | 72 | 138 | 147 | 100 | 85 | 83 | 114 |
1983-1993 | 59 | 57 | 55 | 59 | 53 | 70 | 147 | 154 | 98 | 84 | 81 | 113 |
1994-1999 | 66 | 62 | 58 | 68 | 66 | 78 | 153 | 167 | 104 | 86 | 84 | 115 |
2000-2004 | 74 | 70 | 69 | 78 | 66 | 88 | 168 | 183 | 106 | 97 | 93 | 119 |
2005-2009 | 83 | 72 | 71 | 79 | 84 | 93 | 171 | 201 | 108 | 102 | 98 | 118 |
2010-2014 | 88 | 75 | 71 | 74 | 86 | 100 | 192 | 234 | 123 | 117 | 110 | 163 |
2015-2019 | 80 | 81 | 84 | 88 | 62 | 110 | 185 | 209 | 124 | 119 | 114 | 135 |
2020-2024 | - | 74 | 71 | 77 | 112 | 108 | - | 200 | 118 | 111 | 106 | 112 |
All | 76 | 67 | 67 | 71 | 60 | 90 | 147 | 165 | 110 | 96 | 92 | 115 |
- No data is available for this dwelling type and period of construction |
Table 13 Average Primary Energy Use by Period of Construction and Type of Dwelling (2009-2024) | ||||||||||||
kWh/m2/year | ||||||||||||
Period | Apartment | Ground-floor apartment | Mid-floor apartment | Top-floor apartment | Basement Dwelling | Maisonette | House | Detached house | Semi-detached house | End of terrace house | Mid-terrace house | All dwelling types |
1700-1899 | 446 | 396 | 365 | 450 | 374 | 448 | 419 | 381 | 353 | 380 | 341 | 373 |
1900-1929 | 500 | 393 | 374 | 455 | 356 | 440 | 417 | 387 | 346 | 381 | 349 | 376 |
1930-1949 | 376 | 330 | 248 | 386 | 457 | 429 | 374 | 362 | 306 | 323 | 298 | 329 |
1950-1966 | 428 | 308 | 250 | 365 | 387 | 300 | 336 | 320 | 275 | 305 | 277 | 296 |
1967-1977 | 358 | 300 | 249 | 343 | 334 | 299 | 291 | 272 | 261 | 263 | 239 | 265 |
1978-1982 | 321 | 272 | 230 | 276 | 306 | 290 | 244 | 230 | 235 | 233 | 211 | 231 |
1983-1993 | 349 | 284 | 235 | 274 | 305 | 259 | 229 | 211 | 221 | 228 | 209 | 218 |
1994-1999 | 280 | 258 | 222 | 258 | 249 | 223 | 206 | 187 | 207 | 228 | 209 | 202 |
2000-2004 | 257 | 225 | 192 | 222 | 232 | 193 | 188 | 173 | 194 | 197 | 178 | 186 |
2005-2009 | 177 | 181 | 159 | 184 | 179 | 156 | 151 | 140 | 164 | 163 | 149 | 155 |
2010-2014 | 572 | 119 | 99 | 125 | 132 | 96 | 101 | 92 | 85 | 90 | 84 | 92 |
2015-2019 | 103 | 60 | 47 | 57 | 151 | 53 | 58 | 54 | 53 | 53 | 50 | 53 |
2020-2024 | - | 47 | 39 | 45 | 49 | 39 | - | 40 | 40 | 40 | 38 | 40 |
All | 234 | 209 | 152 | 221 | 279 | 182 | 235 | 206 | 198 | 211 | 218 | 205 |
- No data is available for this dwelling type and period of construction |
Table 14 Average Carbon Dioxide Emissions by Period of Construction and Type of Dwelling (2009-2024) | ||||||||||||
kgCOâ‚‚/m2/year | ||||||||||||
Period | Apartment | Ground-floor apartment | Mid-floor apartment | Top-floor apartment | Basement Dwelling | Maisonette | House | Detached house | Semi-detached house | End of terrace house | Mid-terrace house | All dwelling types |
1700-1899 | 106 | 87 | 77 | 98 | 77 | 102 | 108 | 97 | 84 | 90 | 79 | 91 |
1900-1929 | 119 | 85 | 79 | 98 | 73 | 100 | 108 | 100 | 83 | 89 | 80 | 92 |
1930-1949 | 88 | 74 | 51 | 82 | 98 | 98 | 96 | 92 | 71 | 73 | 67 | 79 |
1950-1966 | 101 | 67 | 51 | 77 | 81 | 63 | 85 | 80 | 62 | 67 | 61 | 69 |
1967-1977 | 84 | 66 | 51 | 72 | 79 | 66 | 74 | 67 | 59 | 60 | 54 | 63 |
1978-1982 | 76 | 60 | 47 | 58 | 76 | 67 | 61 | 57 | 55 | 53 | 48 | 56 |
1983-1993 | 84 | 61 | 49 | 58 | 69 | 55 | 57 | 52 | 51 | 51 | 46 | 52 |
1994-1999 | 65 | 54 | 46 | 54 | 54 | 47 | 51 | 45 | 46 | 51 | 46 | 47 |
2000-2004 | 59 | 46 | 39 | 45 | 50 | 39 | 46 | 42 | 44 | 42 | 38 | 42 |
2005-2009 | 38 | 36 | 32 | 37 | 35 | 31 | 36 | 33 | 38 | 35 | 32 | 34 |
2010-2014 | 134 | 24 | 19 | 24 | 30 | 19 | 24 | 21 | 18 | 18 | 17 | 21 |
2015-2019 | 20 | 11 | 9 | 11 | 29 | 10 | 12 | 11 | 10 | 10 | 10 | 10 |
2020-2024 | - | 8 | 7 | 8 | 9 | 6 | - | 7 | 7 | 7 | 7 | 7 |
All | 53 | 43 | 31 | 45 | 58 | 38 | 59 | 51 | 45 | 47 | 48 | 48 |
- No data is available for this dwelling type and period of construction |
Table 15 Dwellings with Multiple BERs (2009-2024) | ||||||||||||||||
% of total | ||||||||||||||||
Earliest Year | Latest Year | Total | ||||||||||||||
A1 | A2 | A3 | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | ||
A1 | 0 | 0 | 0 | - | - | 0 | 0 | - | - | - | - | - | - | - | - | 0 |
A2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 0 | - | - | - | - | - | - | 1 |
A3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 0 | - | - | 0 | 1 |
B1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | - | 0 | 1 |
B2 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - | 3 |
B3 | 0 | 0 | 0 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
C1 | 0 | 0 | 0 | 1 | 1 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
C2 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 |
C3 | 0 | 0 | 0 | 0 | 1 | 2 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 12 |
D1 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 3 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 13 |
D2 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 12 |
E1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 8 |
E2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 7 |
F | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 7 |
G | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Total | 1 | 2 | 4 | 5 | 8 | 15 | 15 | 13 | 11 | 9 | 7 | 4 | 2 | 2 | 2 | 100 |
- No dwelling received this BER combination for the earliest and latest assessments |
Table 16 BERs Weighted to National Level (2009-2024) | ||||||||||||||
% of row | ||||||||||||||
Dwelling Type | Energy Rating | Total | ||||||||||||
A | B1 | B2 | B3 | C1 | C2 | C3 | D1 | D2 | E1 | E2 | F | G | ||
Apartment | 16 | 2 | 5 | 9 | 10 | 10 | 9 | 10 | 9 | 5 | 4 | 4 | 7 | 166,706 |
Detached house | 8 | 3 | 5 | 8 | 10 | 11 | 11 | 10 | 10 | 5 | 4 | 5 | 10 | 685,859 |
Semi-detached house | 10 | 2 | 3 | 7 | 11 | 13 | 13 | 12 | 10 | 6 | 5 | 5 | 4 | 441,717 |
Terraced house | 9 | 1 | 3 | 7 | 10 | 11 | 10 | 11 | 11 | 7 | 6 | 6 | 8 | 259,863 |
Total | 10 | 2 | 4 | 8 | 10 | 11 | 11 | 11 | 10 | 6 | 5 | 5 | 8 | 1,554,146 |