There were 5,572 non-domestic Building Energy Rating (BER) audits published in 2024, up 17% compared with 2023 (See Figure 1, Table A and Table 1).
There was an increase of 7% in the number of non-domestic BER audits reported between October and December (Q4) 2024 compared with Q4 2023 (See Figure 1, Table A, and Table 1).
Of the non-domestic BER audits conducted on buildings since 2009, 3% were awarded an A rating, 14% a B rating, and 32% were given a C rating (See Figure 3 and Table 3).
A ratings were awarded to 44% of non-domestic buildings constructed between 2020 and 2024, compared with 21% for the construction period 2015-2019, and 4% for all audited buildings (See Figure 4 and Table 13).
The most energy efficient building types audited from 2009-2024 were Schools and Colleges, with 48% receiving an A rating (See Figure 4 and Table 3).
The highest proportion of A ratings by county was in County Kildare (6%) while County Kilkenny, County Sligo, and Limerick City had the highest proportions of G rated buildings at 16% each (See Table 4).
In the Dublin postal districts, the highest proportion of A ratings was in Dublin 20 (9%), while the highest proportion of G ratings was 17% in each of Dublin 5, Dublin 6W and Dublin 8 (See Table 5).
BER certificates expire after 10 years unless a new audit has been undertaken. This means that certificates from more than 10 years ago have expired if they were not updated. The CSO has included these expired certificates in this release to have a more representative analysis of energy efficiency in the non-domestic sector. Provisional BER certificates for buildings that are incomplete or not yet constructed have been excluded from this release. This exclusion also applies to new Shell and Core Buildings, which are rated and sold as bare structures before being fully fitted.
The number of non-domestic BER audits reported in 2024 was 5,572, an increase of 17% from 2023 (See Figure 1, Table A and Table 1). In October to December (Q4) 2024, 1,296 non-domestic BER audits were published, compared with 1,210 for Q4 2023. This was an increase of 7% (See Table A and Table 1).
| 2022 | 2023 | 2024 | |
| January | 247 | 300 | 416 |
| February | 386 | 310 | 450 |
| March | 365 | 490 | 418 |
| April | 385 | 371 | 482 |
| May | 357 | 400 | 620 |
| June | 316 | 420 | 486 |
| July | 395 | 471 | 443 |
| August | 394 | 351 | 409 |
| September | 416 | 437 | 552 |
| October | 288 | 437 | 431 |
| November | 394 | 420 | 487 |
| December | 293 | 353 | 378 |
| Table A Number of Non-Domestic BER certificates | |||||||
| Number | % change | ||||||
| Period | 2020 | 2021 | 2022 | 2023 | 2024 | 2024/2023 | |
| Quarter 1 | 928 | 810 | 998 | 1,100 | 1,284 | 17% | |
| Quarter 2 | 419 | 848 | 1,058 | 1,191 | 1,588 | 33% | |
| Quarter 3 | 859 | 1,074 | 1,205 | 1,259 | 1,404 | 12% | |
| Quarter 4 | 938 | 1,107 | 975 | 1,210 | 1,296 | 7% | |
| Year | 3,144 | 3,839 | 4,236 | 4,760 | 5,572 | 17% | |
A total of 78,065 unique non-domestic BER audits have been published since January 2009. Of these, 3% were awarded an A rating, 14% a rating of B, 32% a rating of C, 21% a rating of D, 11% a rating of E, 6% a rating of F, and 12% a rating of G (See Figure 2 and Table 2).
| BER Ratings | |
| A | 2.694 |
| B | 11.271 |
| C | 25.347 |
| D | 16.102 |
| E | 8.535 |
| F | 5.019 |
| G | 9.097 |
| BER Ratings | |
| A | 2.694 |
| B | 11.271 |
| C | 25.347 |
| D | 16.102 |
| E | 8.535 |
| F | 5.019 |
| G | 9.097 |
The most energy efficient non-domestic building types audited during 2009-2024 were Schools and Colleges, with 48% receiving an A rating. The second most energy efficient buildings were Nursing Residential Homes and Hostels, with 15% rated A. The highest proportion of G ratings was 23%, in Workshops/Maintenance Depots (See Figure 3 and Table 3).
| A | B | C | D | E | F | G | |
| Retail | 1 | 15 | 38 | 18 | 10 | 6 | 12 |
| Office | 2 | 10 | 29 | 24 | 13 | 8 | 14 |
| Restaurant/public house | 0 | 9 | 33 | 33 | 15 | 6 | 4 |
| Hotel | 4 | 26 | 40 | 19 | 6 | 3 | 2 |
| Warehouses | 2 | 16 | 33 | 20 | 10 | 6 | 14 |
| Workshops/maintenance depot | 0 | 9 | 23 | 22 | 14 | 10 | 23 |
| Industrial process building | 3 | 31 | 27 | 16 | 11 | 4 | 9 |
| Hospitals and primary health care | 9 | 14 | 25 | 20 | 13 | 9 | 10 |
| Community/day centre | 10 | 24 | 29 | 17 | 8 | 5 | 7 |
| Nursing residential homes and hostels | 15 | 41 | 26 | 12 | 3 | 1 | 2 |
| Schools and colleges | 48 | 18 | 16 | 10 | 4 | 2 | 3 |
| Sports facilities | 3 | 30 | 29 | 17 | 8 | 6 | 8 |
| Other | 16 | 18 | 20 | 14 | 9 | 6 | 16 |
The highest proportion of A ratings by county was in County Kildare (6%). County Kilkenny, County Sligo, and Limerick City had the highest proportions of G rated buildings at 16% each (See Table 4). Among Dublin postal districts, the highest proportion of A ratings was in Dublin 20 (9%), while the highest proportion of G ratings was 17% in each of Dublin 5, Dublin 6W and Dublin 8 (See Table 5).
Electricity was the most common main space heating fuel. It was used by 60% of all audited buildings compared with 26% using mains gas, 10% using heating oil, 2% using liquefied petroleum gas (LPG), and 2% using other sources of space heating fuel. By type of building, electricity was the most common fuel in all categories except Hotels and Nursing Residential Homes and Hostels, which were more likely to use mains gas (See Table 8).
The average floor area for all audited non-domestic buildings was 717m2. The building type with the largest average floor area was Hotels (3,220m2) while the smallest was Restaurants/Public Houses (284m2) (See Table 10).
A ratings were given to 44% of audited buildings whose year of construction was in the five-year period 2020-2024, compared with 21% of the buildings constructed from 2015 to 2019, and 6% of those built from 2010 to 2014 (See Figure 4 and Table 13).
| A | B | C | D | E | F | G | |
| 1900-1977 | 0 | 7 | 29 | 26 | 16 | 9 | 13 |
| 1978-1999 | 0 | 13 | 36 | 23 | 12 | 7 | 10 |
| 2000-2004 | 0 | 18 | 43 | 19 | 8 | 4 | 7 |
| 2005-2009 | 2 | 17 | 34 | 18 | 9 | 6 | 14 |
| 2010-2014 | 6 | 22 | 28 | 19 | 10 | 5 | 10 |
| 2015-2019 | 21 | 35 | 19 | 10 | 4 | 2 | 9 |
| 2020-2024 | 44 | 20 | 17 | 9 | 4 | 3 | 4 |
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Statistician's Comment
The Central Statistics Office (CSO) has today (21 January 2025) published Non-Domestic Building Energy Ratings for Quarter 4 (Q4) 2024.
Commenting on the release, Kevin Hunt, Statistician in the Climate and Energy Division, said: “The number of non-domestic Building Energy Rating (BER) audits reported in 2024 was 5,572, an increase of 17% from 2023 (See Figure 1, Table A and Table 1). In October to December (Q4) 2024, 1,296 non-domestic BER audits were published, compared with 1,210 for Q4 2023. This was a rise of 7% (See Table A and Table 1).
A total of 78,065 unique non-domestic BER audits have been published since January 2009. Of these, 3% were awarded an A rating, 14% a rating of B, 32% a rating of C, 21% a rating of D, 11% a rating of E, 6% a rating of F, and 12% a rating of G (See Figure 2 and Table 2).
Energy Efficiency by Building Type
The most energy efficient non-domestic building types audited during 2009-2024 were Schools and Colleges, with 48% receiving an A rating. The second most energy efficient buildings were Nursing Residential Homes and Hostels, with 15% rated A. The highest proportion of G ratings was 23%, in Workshops/Maintenance Depots (See Figure 3 and Table 3).
Energy Efficiency by Period of Construction
A ratings were given to 44% of audited buildings which were constructed in the five-year period of 2020-2024, compared with 21% of the buildings constructed from 2015 to 2019, and 6% of those built from 2010 to 2014 (See Figure 4 and Table 13).
Local Area Analysis
The highest proportion of A ratings by county was in County Kildare (6%). County Kilkenny, County Sligo, and Limerick City had the highest proportions of G rated buildings at 16% each (See Table 4).
Among Dublin postal districts, the highest proportion of A ratings was in Dublin 20 (9%), while the highest proportion of G ratings was 17% in each of Dublin 5, Dublin 6W and Dublin 8 (See Table 5).
Floor Area
The average floor area for all audited non-domestic buildings was 717m2. The building type with the largest average floor area was Hotels (3,220m2) while the smallest was Restaurants/Public Houses (284m2) (See Table 10)."