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For more information on this release:
E-mail: environment@cso.ie Dympna Corry (+353) 1 498 4207 Linh Nolan (+353) 1 498 4209
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information@cso.ie (+353) 21 453 5000 Visit StatCentral.ie, the portal to Ireland's official statistics On-line ISSN 2009-9304
CSO statistical release, , 11am

Non-Domestic Building Energy Ratings

Quarter 3 2018

Table A: Building Energy Ratings by Period of Construction (Non-Domestic)
% of row
Period of constructionEnergy rating 
ABCDEFGTotal
1900-19770630261591313,524
1978-199901137231271012,176
2000-200401644199487,383
2005-20091203716751513,384
2010-201482829168371,910
2015-2018243617822101,022

24% of non-domestic construction between 2015 and 2018 was rated "A"

Figure 1: Building Energy Ratings by Period of Construction (Non-Domestic) 1900-2018
go to full release

Building Energy Ratings (BER) audits were conducted for 1,022 non-domestic buildings constructed between 2015 and 2018 (see Table A). Just under one quarter (24%) 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 53,874 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 (22%) followed by Warehouses (13%) and Office buildings (13%) (see Figure 3).

The highest proportion of combined “A” and “B” ratings were in County Carlow, County Kildare, County Offaly and County Wicklow at 20% each (see Table 4). Kilkenny 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 25% followed by 19% for Dublin 18 (see Table 5). The highest proportion of “G” ratings was 17% in Dublin 8 (see Table 5).

The average floor area of all audited non-domestic dwellings was 671 square metres (see Table 10). This average size varied from 3,391 square metres for hotels to 297 square metres for Restaurants and public houses.

BER Ratings
A0.557
B10.943
B22.252
B33.978
C16.544
C26.334
C35.141
D16.317
D24.812
E13.247
E22.541
F3.368
G6.112
ABCDEFG
Retail01441179612
Office19312513813
Restaurant/public house0730361864
Hotel0164326843
Warehouses018341910613
Workshops/maintenance depot092323141022
Industrial process building2362616938
Hospitals and primary health care6152320141012
Community/day centre3273117958
Nursing residential homes and hostels7403015413
Schools and colleges24262217524
Sports facilities2302918868
Other217241811820
Table 1 Building Energy Ratings Certificates (Non-Domestic) 2009-2018
number
Period2009201020112012201320142015201620172018Total
January451941501934445906343993393633,351
February1473261661569466217435535364764,670
March2072282012248487408076476984675,067
April1652301621788617966336654553734,518
May2401892012047888836616475314564,800
June3481841981637668576865974623854,646
July4081931902437528415955614873924,662
August2662871732135757855635874533534,255
September2652212182456939986736835953804,971
October236206207289863882682640620 4,625
November307303223328713964572530512 4,452
December337193211309574853467436477 3,857
            
Total2,9712,7542,3002,7458,8239,8107,7166,9456,1653,64553,874
Table 2 Building Energy Ratings by Year (Non-Domestic) 2009-2018
number
YearEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
200928117241385447362278278224106851401282,819
201021551812663453562873052051271221291732,572
20114666120208292237214270164110941281412,090
201237511132033753332843242501721181542172,631
2013481153505851,1231,0958681,0358154953595411,0388,467
2014431143046641,2171,1458991,2029066145126511,2819,552
2015811292575189309197198836964984015171,0047,552
2016861022364707697986378396244823754829066,806
20171011162644186676655987825753972983987856,064
201866781862613794243573993532461772284393,593
               
Total5579432,2523,9786,5446,3345,1416,3174,8123,2472,5413,3686,11252,146
Table 3 Building Energy Ratings by Type of Building (Non-Domestic) 2009-2018
% of row 
Building TypeEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Retail01491715101075461219,943
Office12258111213117681311,805
Restaurant/public house0124810111917117644,884
Hotel027814151416106343753
Warehouses0261013129118556137,241
Workshops/maintenance depot01357781398610222,128
Industrial process building2131210129611554381,122
Hospitals and primary health care6466888119771012892
Community/day centre33121213107975458859
Nursing residential homes and hostels77151813116783113417
Schools and colleges2479109761073224759
Sports facilities26111312981085268462
Other2566107611656820881
               
Total12481312101296561252,146
Table 4 Building Energy Ratings by County (Non-Domestic) 2009-2018
% of row    
CountyEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Carlow037101613910755313675
Dublin 01-24124712121113107561114,246
Dublin County1247151310129556103,736
Kildare3259121210108555122,104
Kilkenny13771411810955417783
Laois124121111812885413613
Longford11681212911886911399
Louth124611128138658141,436
Meath1269131211118555121,731
Offaly126101112111385469601
Westmeath1268161381110655101,145
Wexford213612139119678141,456
Wicklow1361113119128657101,536
Clare0247111191312669111,428
Cork City013611149121274614487
Cork County1248131311129646114,693
Kerry024913149109647121,305
Limerick City11341213714976914432
Limerick County114813139139667111,852
Tipperary1248161110119757111,419
Waterford City00381514111088588630
Waterford County12691211812855514810
Galway City115510131212977513597
Galway County22581112101110658122,611
Leitrim21612121119127369234
Mayo115813129129656131,374
Roscommon114710109121084915532
Sligo114614109111173716797
Cavan11471212812986714649
Donegal136810129139756121,326
Monaghan1349119911776716509
               
Total12481312101296561252,146
– No non-domestic unit received this BER rating in this county
Table 5 Building Energy Ratings by Dublin Postal District (Non-Domestic) 2009-2018
% of row 
Dublin Postal DistrictEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Dublin 11125121091511639151,257
Dublin 22234911101312868122,133
Dublin 311681511157851013350
Dublin 4145581012151076610612
Dublin 5112912121012674616278
Dublin 60146109111012971013416
Dublin 6W01371571491061016201
Dublin 70234121212121175614640
Dublin 8113411911131076617891
Dublin 911581412121487479563
Dublin 1012478151012910868225
Dublin 1125811141011129458681
Dublin 1201361212111710746101,201
Dublin 1322101413101188939185
Dublin 14026715139131153710445
Dublin 151361517161010733361,069
Dublin 1614413139121463713179
Dublin 1702371812151286647371
Dublin 181649914121496448777
Dublin 20266129911126881266
Dublin 2211691516101394447579
Dublin 241249161210129534131,127
               
Total124712121113107561114,246
– No non-domestic unit received this BER rating in this Dublin postal district
Table 6 Building Energy Ratings by Main Space Heating System Fuel (Non-Domestic) 2009-2018
% of row 
Heating System FuelEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Mains Gas23710121081086441413,629
Heating Oil1258121211161275545,259
Electricity01371313101296581231,851
LPG4512131512101075332931
Other Fuels47510787101087711476
               
Total12481312101296561252,146
Table 7 Main Space Heating System Fuel by County (Non-Domestic) 2009-2018
% of row 
CountyHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Carlow2796121675
Dublin 01-24384570014,246
Dublin County36559013,736
Kildare27863112,104
Kilkenny27135621783
Laois24165712613
Longford10236061399
Louth29861111,436
Meath281159101,731
Offaly17196022601
Westmeath191661311,145
Wexford101568521,456
Wicklow27961111,536
Clare211857311,428
Cork City313641487
Cork County25864214,693
Kerry91568611,305
Limerick City262720432
Limerick County251063111,852
Tipperary181861211,419
Waterford City3146122630
Waterford County23106232810
Galway City1078110597
Galway County121471312,611
Leitrim6286041234
Mayo82067411,374
Roscommon13235842532
Sligo8186751797
Cavan13195882649
Donegal112754621,326
Monaghan16205743509
       
Total2610612152,146
– No non-domestic unit indicated the usage of this main space heating fuel type for this county
Table 8 Main Space Heating System Fuel by Type of Building (Non-Domestic) 2009-2018
% of row 
Building TypeHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Retail174781119,943
Office327601111,805
Restaurant/public house282441424,884
Hotel463012121753
Warehouses321155207,241
Workshops/maintenance depot261455312,128
Industrial process building302736331,122
Hospitals and primary health care30125521892
Community/day centre36263241859
Nursing residential homes and hostels403015123417
Schools and colleges42262363759
Sports facilities40104352462
Other31115242881
       
Total2610612152,146
Table 9 Main Ventilation System by Type of Building (Non-Domestic) 2009-2018
% of row 
Building TypeMain Ventilation SystemTotal
Air ConditioningMechanical VentilationNatural Ventilation
Retail4744919,943
Office3565911,805
Restaurant/public house3411564,884
Hotel26865753
Warehouses146807,241
Workshops/maintenance depot155802,128
Industrial process building1912691,122
Hospitals and primary health care21673892
Community/day centre7686859
Nursing residential homes and hostels1793417
Schools and colleges7786759
Sports facilities291457462
Other19675881
     
Total3366152,146
Table 10 Average Floor Area by Type of Building and County (Non-Domestic) 2009-2018
              m2
CountyRetailOfficeRestaurant/ public houseHotelWarehousesWorkshops/ maintenance depotIndustrial process buildingHospitals and primary health careCommunity/ day centreNursing residential homes and hostelsSchools and collegesSports facilitiesOtherAll building types
Carlow4383163632,5888797063,0692392211,340962680853594
Dublin 01-243601,1533354,1851,3575722,7176723721,4241,9881,342942900
Dublin County2645153495,2191,3921,1923,8283724311,8792,5141,0111,393673
Kildare2243703714,2239916177,1066162812,3561,4061,271470618
Kilkenny2832762792,5591,1696741,4863032331,269976544194499
Laois3272552695,7958975674,3166832501,5162,2611,4891,645589
Longford3552572681,1671,1786485,8654244052,019906707196632
Louth3075553194,6951,1965914,1503712001,4501,5131,861820672
Meath2383802954,0629025311,7795392811,5251,680981270538
Offaly3004412251,9499606631,6327613121,5852,321258139583
Westmeath2995312452,2211,4396153,3328192601,2591,8391,053637588
Wexford2964582702,7248036512,0744563601,2891,459689732518
Wicklow2183002863,8966524242,1385413061,7481,701778280496
Clare2184882952,2319554322,361200254634986503492578
Cork City3767032144011,2624232,705172132736948533555
Cork County2876082713,4389664763,2035003411,3071,501829724583
Kerry2622802722,8626803043,3573892697521,042467328491
Limerick City2554752717,6309453951,4544964671,5218546773,383550
Limerick County2854482844,6881,1684473,2779014111,8152,4881,051950675
Tipperary2923392482,5091,6634423,7363693211,3451,105576211624
Waterford City2744413563,7857676902,075127659592624342929512
Waterford County6213202823,3951,3106183,8791,0531541,1761,2127641,114819
Galway City2873252034,0505942983,4803006561,4902,972447629526
Galway County2864382683,5841,1044911,7774302401,9371,292960449599
Leitrim2418732811,2805856328783968691,29855487
Mayo2582652823,6149106271,9169932631,380531624515478
Roscommon2794312541,9448155433,8877894931,379437634952485
Sligo3184032901,2229564522,7731,0372682,1371,510665883538
Cavan2283762472,3216234041,7093833483,0521,077621369416
Donegal2483913182,2551,1974892,7265324139681,031776546554
Monaghan2901643675,1821,2266981,7081425231,1961,852946880612
               
All3017242973,3911,1465752,8645463321,4491,568963750671
– No data is available for this building type and county
Table 11 Average Primary Energy Use by Type of Building and County (Non-Domestic) 2009-2018
kWh/m2/year
CountyRetailOfficeRestaurant/ public houseHotelWarehousesWorkshops/ maintenance depotIndustrial process buildingHospitals and primary health careCommunity/ day centreNursing residential homes and hostelsSchools and collegesSports facilitiesOtherAll building types
Carlow1,4395878446267458251,022473421448196644741965
Dublin 01-241,0844851,0335954366877333994993872651,184988591
Dublin County1,1105231,0146223446507704583774261451,046736598
Kildare1,2257558951,0044757506862863894631848371,177736
Kilkenny1,2169358785954586676344563684832761,425830767
Laois1,411866947501440770923243438457137987926826
Longford1,3629581,134726533975808347758314155627910864
Louth1,073573972631730770904373551399111808587779
Meath1,1695099996266229537762813524521831,594625726
Offaly8784539735595348146061984504231501,167668594
Westmeath1,0297069737495401,407572353457325159599705723
Wexford1,5915279678325269585025431,1186071541,191860858
Wicklow9796191,008696395671570381487452187789805627
Clare1,1596319406515917447281,8695656385041,319848751
Cork City1,180776971691599846469659494443965636837
Cork County1,1195229916585276155325434835751691,007701672
Kerry9947529706216217969425093904832351,012797764
Limerick City1,0811,6091,058502719782835353487944281766241931
Limerick County1,1177691,043660714659934478390373193788927806
Tipperary1,0047289387144239128003106363772391,091894718
Waterford City1,3615821,0247453896367594923812483611,192881749
Waterford County1,3516241,140730609555477401781368215867278839
Galway City1,1006911,2394855437398843153322681351,074820732
Galway County1,167685909581796703819331412371176859849768
Leitrim9187528588519995899714164961481,175765
Mayo1,1277909185625326917012203433953486262,666778
Roscommon1,9674661,1146376386056562947394374101,157638988
Sligo1,5729009535929706028693174625342501,197688997
Cavan1,0186201,044649685685809355580405252762957741
Donegal1,119610985661651819623340378556182732638733
Monaghan1,0386108567674351,249699575344325212946224701
               
All1,1565429896455107257324044934392091,019854686
– No data is available for this building type and county
Table 12 Average Carbon Dioxide Emissions by Type of Building and County (Non-Domestic) 2009-2018
kgCO2/m2/year
CountyRetailOfficeRestaurant/ public houseHotelWarehousesWorkshops/ maintenance depotIndustrial process buildingHospitals and primary health careCommunity/ day centreNursing residential homes and hostelsSchools and collegesSports facilitiesOtherAll building types
Carlow341138195142176189240110959444145175227
Dublin 01-2425611023613199157169911138157256232135
Dublin County26111923213979142172101839232229170137
Kildare289176208229110174161658910540181276171
Kilkenny2882192071271061551501028311463334199179
Laois3352032241101041792185310110530189210193
Longford324228270167127223191811807337148206205
Louth253132227143169177209861248624182137180
Meath27511823413714622218364799843359140168
Offaly209106231123124193144441069734278155139
Westmeath243166230170125331135811026835139165170
Wexford37812223019412422811912726514336216204202
Wicklow230143237160911581338611110241173184145
Clare274148221150137171168439132144119313199175
Cork City279180223145136191110153109100213142194
Cork County26412123114612214312412511212238214162156
Kerry2351782301411461882251198811356241190180
Limerick City256379246107168186185811082256418254217
Limerick County264179244138166155220106918244184215188
Tipperary237172222160100209188721518755254216169
Waterford City32213423516691146173111775878275204174
Waterford County32014626915314113011089176784619063196
Galway City26216429211112917521175756429232194173
Galway County27716221613118816619075988240195199180
Leitrim2191792042042401302319912133280182
Mayo26818621813112616516550828683147631184
Roscommon4681082651471511441586118010292264148233
Sligo3742122271392291382077411212460234155236
Cavan241147247150161158191821376760181213174
Donegal26614523515715419014278919442173150172
Monaghan2451452031769929515713879743819938161
               
All273124231145118167170921149647223199159
– No data is available for this building type and county
Table 13 Building Energy Ratings by Period of Construction (Non-Domestic) 2009-2018
% of row 
Period of ConstructionEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
1900-19290013891015139710126,141
1930-19490024101291512778131,486
1950-196601251010101311978142,820
1967-197701351012101311868133,077
1978-198202251111111310968132,638
1983-19930137131291310767124,719
1994-1999014916151114964564,819
2000-20040151016151211854487,383
2005-200912711141391074351513,384
2010-201488911129810644371,910
2015-2018241612985453212101,022
               
Total12481312101296561249,399
Table 14 Main Space Heating System Fuel by Period of Construction (Non-Domestic) 2009-2018
% of row  
Period of ConstructionFuel TypeTotal
Mains GasHeating OilElectricityLPGOther
1900-1929191563126,141
1930-1949181663211,486
1950-1966231659112,820
1967-1977251953213,077
1978-1982241757212,638
1983-1993241065114,719
1994-199928763114,819
2000-200428565207,383
2005-2009315622113,384
2010-2014301351421,910
2015-201843644511,022
       
Total2710612149,399

Background Notes

Non-Domestic Building Energy Ratings

Introduction

The European Union Energy Performance of Buildings Directive (EPBD) contains a range of provisions to improve the energy performance of new and existing buildings. The EPBD obliges specific forms of information and advice on energy performance to be provided to building purchasers, tenants and users for consideration in property transactions. A Building Energy Rating (BER) is an indication of the energy performance of a building represented in units of kWh/m2/year. A BER is based on the characteristics of major components of the building. The BER certificate indicates the annual primary energy usage and carbon dioxide emissions associated with the provision of space heating, water heating, ventilation, lighting, and associated pumps and fans. The average annual primary energy use figures and carbon dioxide emissions are not based on actual energy use and emissions data.

These Background notes provide a very general overview together with some specific information on the detailed tables in the release. The SEAI website should be consulted for detailed information on the non-domestic energy assessment procedure (NEAP), see http://www.seai.ie/Your_Building/BER/Non_Domestic_buildings/Non_domestic_Energy_Assessment_Procedure_NEAP_/

Revisions

The figures in this release will be updated on a quarterly basis. Changes to data for the previous quarters will arise mainly from some buildings having another BER audit undertaken and the previous certificate being marked as expired. The difference in the number of BER certificates included in Tables 1 and 2 gives an indication of the number of buildings that have had more than one BER audit undertaken.

Coverage

Full site surveys have to be carried out for New-final and Existing building assessments. New-provisional ratings do not require a site survey as the assessment is done based on design stage plans – new provisional ratings have been excluded from this release. Some buildings are excluded from the EPBD requirements: national monuments; protected structures; places of worship; temporary buildings; industrial and agricultural buildings not intended for occupancy and below a specified installed heating capacity; and buildings with a total useful floor area of less than 50 square metres. Short-term lettings are not exempt.

A BER for new non-domestic buildings was introduced in July 2008 and for renting of existing non-domestic buildings in January 2009. New regulations came into effect in January 2013 requiring the inclusion of BER information in property sale and rental advertisements.

National representativeness

The data have not been adjusted to represent all non-domestic buildings in the State and hence the tables only represents buildings that have been assessed.

Definitions

The BER rating scale is divided into categories from G (largest primary energy usage) to an A1 rating (lowest primary energy usage). Energy consumption is expressed in kWh per square metre of floor area of the building per year (kWh/m2/year) and CO2 emissions are expressed in kilograms of carbon dioxide per square metre per annum (kgCO2/m2/year). For the purposes of this release A1, A2, and A3 have been combined because of the small number of Certificates in these categories. The certificate is valid for 10 years unless changes are made to the building.


Table Notes

Table 1 presents the number of BERs published by month since January 2009. A premises that has had BERs conducted in different years is included in each year. This table gives an overview of the number of BER assessments being performed each month.

Tables 2-14 only include the latest BER published for each building i.e. the BER is on the public register and is not expired - the number is lower than the total in Table 1 because expired and replaced certificates have been excluded.

Table 2 shows the number of BER certificates by energy rating and year.

Table 3 classifies the number of BER certificates by energy rating and building type. This relates to the current building use and it is displayed on the BER certificate. Some building types have been combined for the purposes of this release e.g. schools and colleges.

Tables 4-5 profile Building Energy Ratings by county and Dublin postal district. Table 4 is in county within province order.

Table 6 profiles Building Energy Ratings by type of main space heating system fuel. The heating system fuel options are: Mains gas; Heating Oil; Electricity; LPG; Biogas; Oil; Coal; Biomass; Waste heat; Anthracite; Smokeless fuel; Dual fuel appliances; and Other. Categories with only a small number of responses have been amalgamated in Table 6.

Tables 7-8 cross-classify main space heating system fuel by county and building type.

Table 9 cross-classifies main ventilation system by building type.

Table 10 shows the average floor area by building type and county.

Tables 11-12 show the average primary energy use and average carbon dioxide figures by building type and county.

Table 13 shows the relationship between period of construction and building energy ratings. It can be linked with changes to the Building Regulations that require new buildings to be more energy efficient.

Table 14 cross-classifies main space heating fuel by period of construction.

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