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For more information on this release:
E-mail: environment@cso.ie Dympna Corry (+353) 1 498 4207 Berna Lawlor (+353) 1 498 4210
For general information on CSO statistics:
information@cso.ie (+353) 21 453 5000 On-line ISSN 2009-9304
CSO statistical release, , 11am

Non-Domestic Building Energy Ratings

Quarter 4 2019

Table A: BERs by Period of Construction (Non-Domestic)
% of row
Period of constructionEnergy rating 
ABCDEFGTotal
1900-19770629271691314,711
1978-199901237231271013,067
2000-200401643198487,916
2005-20091203616751614,536
2010-201482928157482,114
2015-20192135181042111,624

21% of non-domestic construction between 2015 and 2019 was rated "A"

Figure 1: BERs by Period of Construction (Non-Domestic) 1900-2019
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Building Energy Ratings (BER) audits were conducted for 1,624 non-domestic buildings constructed between 2015 and 2019 (see Table A). Over one fifth (21%) of these buildings received an “A” rating compared with 8% of non-domestic buildings constructed during 2010 to 2014 (see Figure 1). In contrast, 97% of domestic dwellings constructed between 2015-2019 received an "A" rating (separate CSO release). 

There were 59,097 non-domestic BER audits conducted in the period 2009 to 2019 (see Table 1). The profile of non-domestic BER audits conducted since 2009 was 1% awarded an "A" rating, 14% a "B" rating, and 34% with a “C” rating (see Table 3).

The most energy efficient building types audited during 2009-2019 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 and Hospitals and primary health care with 7% rated “A”. The least energy efficient building types, defined by a “G” rating, were Workshops and maintenance depots (23%) followed by Other Buildings (20%) (see Figure 3).

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

In Dublin city, Dublin 15 had the highest proportion of combined “A” and “B” ratings at 25% followed by 20% for Dublin 18 (see Table 5). The highest proportion of “G” ratings was 17% in Dublin 6W and Dublin 8 (see Table 5).

The average floor area of all audited non-domestic dwellings was 679 square metres (see Table 10). This average size varied from 3,302 square metres for hotels to 297 square metres for Restaurants and public houses.

BER certificates expire after ten years unless a new audit has been undertaken. This means that many of the 2009 certificates expired in 2019. The CSO has included these expired certificates in this release.

BER Ratings
A728
B11126
B22576
B34416
C17119
C26926
C35586
D17000
D25316
E13621
E22800
F3738
G7056
ABCDEFG
Retail01440179613
Office19302513814
Restaurant/public house0730361764
Hotel1184224843
Warehouses017331910614
Workshops/maintenance depot092322141023
Industrial process building3362615938
Hospitals and primary health care715242014911
Community/day centre4273116958
Nursing residential homes and hostels7413014412
Schools and colleges24292116523
Sports facilities3302917768
Other217231712820
Table 1 BER Certificates (Non-Domestic) 2009-2019
number
Period20092010201120122013201420152016201720182019Total
January451941501934445906343993393632623,613
February1473261661569466217435535364753625,031
March2072282012248487408076476984674235,490
April1652301621788617966336654543743584,876
May2401892012047888826616475314564105,209
June3481841981637668576865974623853274,973
July4081931902437528415955614873933615,024
August2662871732135757855635874533533584,613
September2652212182456939986736835953853495,325
October2362042072898638826826406203513965,370
November3073032233287139645725305123893385,179
December3371932113095748534674364762692694,394
             
Total2,9712,7522,3002,7458,8239,8097,7166,9456,1634,6604,21359,097
Table 2 BERs by Year (Non-Domestic) 2009-2019
number
YearEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
200932120252405450373284285226106851441302,892
201024661892753493592883082071271221321742,620
20115070124213297240216271164111941291502,129
201240541172083803352883242511721261572562,708
2013511283645911,1511,1318761,0398175043635501,1618,726
2014491253186741,2261,1489051,2069136215176651,3499,716
2015841322655229369227218836964994035181,0377,618
2016901072424807718006388406254823764829146,847
20171011162624186676655987825753972983987856,062
20181111102253304715304485254393262192995414,574
201996982183004214233245374032761972645594,116
               
Total7281,1262,5764,4167,1196,9265,5867,0005,3163,6212,8003,7387,05658,008
Table 3 BERs by Type of Building (Non-Domestic) 2009-2019
% of row 
Building TypeEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Retail0149171491075461322,090
Office12358111113117681413,131
Restaurant/public house0124811111917116645,417
Hotel137815141315105343834
Warehouses026912129118556147,963
Workshops/maintenance depot01367881398610232,366
Industrial process building3131310129610554381,228
Hospitals and primary health care7466788119769111,017
Community/day centre44121213107975458990
Nursing residential homes and hostels79151814106773112514
Schools and colleges2410910876972223928
Sports facilities361112121081085268514
Other25661076116568201,016
               
Total12481212101296561258,008
Table 4 BERs by County (Non-Domestic) 2009-2019
% of row    
CountyEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Carlow038101513910754313754
Dublin 01-24124712121013107561215,891
Dublin County2248141210129556114,131
Kildare3259121310108555122,323
Kilkenny138813108101054417891
Laois225111111711885415698
Longford12571211910876912445
Louth125611128138658151,604
Meath2269121210118555131,944
Offaly127911111112855611701
Westmeath1268151381110555111,263
Wexford214711139118668141,601
Wicklow1351012119128657101,690
Clare1247111191212658121,586
Cork City014612149121274614525
Cork County1248131310129646115,164
Kerry125914139109647121,444
Limerick City11241212715975914471
Limerick County114813139139667122,067
Tipperary124815119119757111,614
Waterford City00381514101188589687
Waterford County22691211912865515885
Galway City115510131212976513646
Galway County22581111101110657132,922
Leitrim21611129191274810282
Mayo115812139119756141,525
Roscommon113691091310941015606
Sligo114514109111174716877
Cavan11471212812986714706
Donegal135810119139756111,498
Monaghan1349119911786715567
               
Total12481212101296561258,008
– No non-domestic unit received this BER in this county
Table 5 BERs by Dublin Postal District (Non-Domestic) 2009-2019
% of row 
Dublin Postal DistrictEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Dublin 111261110101411749151,435
Dublin 22245911101312768122,365
Dublin 301167141015775916405
Dublin 424558912141176611688
Dublin 512281312912675616311
Dublin 6114698101012871013462
Dublin 6W023714714101071017230
Dublin 71334111211131175614706
Dublin 8124410810139867171,009
Dublin 911581412111477479611
Dublin 1012478151111109759238
Dublin 11125811131111119459742
Dublin 1201351211111710757111,350
Dublin 1323111413910979410211
Dublin 14026714139131154710485
Dublin 152361416151010732371,178
Dublin 1604513149111463613202
Dublin 1712581711141286648413
Dublin 1815591013121496449876
Dublin 2011551211811115971375
Dublin 22116915151112105447655
Dublin 2422391513101210534121,244
               
Total124712121013107561215,891
– No non-domestic unit received this BER in this Dublin postal district
Table 6 BERs by Main Space Heating System Fuel (Non-Domestic) 2009-2019
% of row 
Heating System FuelEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Mains Gas3379121081086441515,400
Heating Oil1268121210161275445,875
Electricity11371313101296581335,096
LPG5512131512910743321,058
Other Fuels574979711986712579
               
Total12481212101296561258,008
Table 7 Main Space Heating System Fuel by County (Non-Domestic) 2009-2019
% of row 
CountyHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Carlow27105921754
Dublin 01-24394560115,891
Dublin County36558014,131
Kildare27863112,323
Kilkenny26145532891
Laois24155812698
Longford12216151445
Louth30861111,604
Meath291158111,944
Offaly18186022701
Westmeath191660411,263
Wexford111567621,601
Wicklow27962111,690
Clare211858211,586
Cork City313641525
Cork County25864215,164
Kerry91667621,444
Limerick City262720471
Limerick County251063112,067
Tipperary191859211,614
Waterford City3156122687
Waterford County23106232885
Galway City1178110646
Galway County121470312,922
Leitrim7276141282
Mayo92067311,525
Roscommon12235942606
Sligo9196651877
Cavan14205782706
Donegal122753621,498
Monaghan16205743567
       
Total2710612158,008
– 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) 2009-2019
% of row 
Building TypeHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Retail184771122,090
Office317601113,131
Restaurant/public house282441525,417
Hotel463012111834
Warehouses331155217,963
Workshops/maintenance depot281454312,366
Industrial process building302636441,228
Hospitals and primary health care311253211,017
Community/day centre37263241990
Nursing residential homes and hostels403113132514
Schools and colleges42262462928
Sports facilities41104261514
Other341150421,016
       
Total2710612158,008
Table 9 Main Ventilation System by Type of Building (Non-Domestic) 2009-2019
% of row 
Building TypeMain Ventilation SystemTotal
Air ConditioningMechanical VentilationNatural Ventilation
Retail4744922,090
Office3565913,131
Restaurant/public house3410565,417
Hotel26866834
Warehouses156797,963
Workshops/maintenance depot165792,366
Industrial process building2012681,228
Hospitals and primary health care216721,017
Community/day centre8686990
Nursing residential homes and hostels1693514
Schools and colleges8884928
Sports facilities291556514
Other186751,016
     
Total3466058,008
Table 10 Average Floor Area by Type of Building and County (Non-Domestic) 2009-2019
              m2
CountyRetailOfficeRestaurant/ public houseHotelWarehousesWorkshops/ maintenance depotIndustrial process buildingHospitals and primary health careCommunity/ day centreNursing residential homes and hostelsSchools and collegesSports facilitiesOtherAll building types
Carlow4313103682,5888556893,033229215976981680853578
Dublin 01-243551,1763314,0021,3535732,8516463841,5962,2601,312820910
Dublin County2865323424,9191,4581,1083,7744784322,4112,5559811,323701
Kildare2253583674,4261,0446017,0826332682,3421,4841,391465625
Kilkenny2722712772,6361,1817631,4543232331,4791,735479252505
Laois3072472805,7958935334,0545732411,6852,4421,7351,464564
Longford3592622781,1321,2426595,8654244032,0199063,777184669
Louth3005903174,6951,1966024,4356411941,8621,4521,625879681
Meath2324033024,1421,0975082,3795792751,5131,3829783,971625
Offaly2984842211,8288846471,6527453071,5852,469371123561
Westmeath2965112452,1331,4256183,2151,1562451,1541,839997637589
Wexford3105112742,7638036242,0294433451,2651,367678662524
Wicklow2163022813,8966284392,0634953051,8491,625774290482
Clare2135302902,1269294252,5732002576001,136503492583
Cork City3597782101,7221,2434082,250168132682790533569
Cork County2996562733,2679684783,1435283371,4971,493812652596
Kerry2652722752,4666843103,027529311890999938317492
Limerick City2524572757,6301,0013951,4544994751,5218546772,841540
Limerick County2904402954,3471,1344683,2408614461,8382,1957941,316672
Tipperary3033312542,4061,4784354,1224883581,315991654213630
Waterford City2814753463,7857526811,970159659990624342815520
Waterford County6003152873,1171,1846733,7861,2971541,1801,0907641,114795
Galway City2853192104,0505952983,3162856561,4902,677447517507
Galway County2864332713,3571,0754861,8534052422,0741,612909459598
Leitrim2227742791,2805656324773961,3641,18944455
Mayo2572742783,4148746172,2279112571,5265401,041464485
Roscommon2773752501,8808165233,8876824331,405437634952464
Sligo3173932861,2229304523,3241,0372711,2511,416665883551
Cavan2233602462,3216494031,7093723563,052978621331406
Donegal2484053262,4451,2374922,7174914309681,040776546569
Monaghan3131633654,9721,1216401,6171355231,4921,852946880605
               
All3027372973,3021,1505732,9285743371,5551,6511,011802679
– No data is available for this building type and county
Table 11 Average Primary Energy Use by Type of Building and County (Non-Domestic) 2009-2019
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
Carlow1,359570834626736835984482431434190644741929
Dublin 01-241,1024661,0375724367137083955024222551,184993580
Dublin County1,0875121,0346223276477483814013591541,047658576
Kildare1,2297459089054827767022763784591968871,153733
Kilkenny1,1858898715644345626584283684301821,399753721
Laois1,5688419495014748479512464264061271,161927880
Longford1,3581,0221,095649512888808347759314155581916841
Louth1,107536964631710757805371525381110811666757
Meath1,2484929936376329315912743634521811,384277686
Offaly9164339665575768616132074394231511,064971626
Westmeath1,1116989897325531,297625345464345132667705738
Wexford1,6764631,0028356249175005701,0696161711,196872892
Wicklow1,009628997696398631560384468421187863753632
Clare1,1346859356605837567081,8695496204381,319848743
Cork City1,176717962536600843471623494437972636805
Cork County1,0944859886595296125235245455371661,006688657
Kerry1,043764953634611773854374391460228673793757
Limerick City1,0701,4571,038502711782835380375944281766244903
Limerick County1,1597991,010651730647922427387368212829665800
Tipperary1,004713919723492907766263619381255932939728
Waterford City1,3045929967453886377374863814763611,192900746
Waterford County1,3166321,117728645949480350781370213867278845
Galway City1,1436801,1984857377398773183322681371,074809763
Galway County1,217716908584815701780333394326163863854770
Leitrim1,0148398648519755896184164811491,356804
Mayo1,1468679076375236946792253623793505942,617787
Roscommon1,9714961,0936666946246563067054374101,1576381,007
Sligo1,5658969435929376447853174655932521,197688966
Cavan1,0466151,036649659641809356688405253762870746
Donegal1,096613988648734785593347370556188732638728
Monaghan1,0176128597404581,222694575344350212946224699
               
All1,169526986639516734709388495427210990767678
– No data is available for this building type and county
Table 12 Average Carbon Dioxide Emissions by Type of Building and County (Non-Domestic) 2009-2019
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
Carlow321134193142174192230111989142145175218
Dublin 01-2426010623712599163163901138955257232133
Dublin County2551172371397514216783897633229151131
Kildare289174210204111180164638610443191270170
Kilkenny280207205120101130155968310139328179168
Laois37219722411011219722454989228227210205
Longford322244260148121202191811817337124207197
Louth260123224143164173186831187924183154175
Meath2941142321401482181386281994231162159
Offaly217102229123133204146461039735250228147
Westmeath262163234167128305147801047329155165173
Wexford39810723719414721811913325214540220207210
Wicklow23414423416091148131871059541190172146
Clare268161220153135173163439127141103313199173
Cork City27816622011513619111014310999215142187
Cork County25811222914612214212212012711537214159152
Kerry247181225144144182203888810654157189178
Limerick City25334324210716618618588832256418255210
Limerick County27418623613717015121795898149192153186
Tipperary236168216163116209181611468860216225171
Waterford City308136229166911461631107710178275209172
Waterford County31214826315315021711177176794619063197
Galway City27116128211117317520975756430232191180
Galway County28816921513219316518276937236196200181
Leitrim2421992062042331301479911233305191
Mayo27220421514912416616051878384128619186
Roscommon4681152591541641491586417110192264148238
Sligo3722122241392211471867411114161234155228
Cavan248146245150154148191831626760181194175
Donegal26014523515317318213580889443173150171
Monaghan23914520316910428915613879823819938161
               
All276121230143119169165881149347217178157
– No data is available for this building type and county
Table 13 BERs by Period of Construction (Non-Domestic) 2009-2019
% of row 
Period of ConstructionEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
1900-19290013891016139710126,719
1930-19490024101291511878131,606
1950-196601251010101312978143,063
1967-197701351012101311868133,323
1978-198202251011111310969132,788
1983-19930137131291310767125,133
1994-1999014916151114964565,146
2000-20040151016151211853487,916
2005-20091271114139974351614,536
2010-2014891011119810534482,114
2015-2019211511976554222111,624
               
Total12581312101296561253,968
Table 14 Main Space Heating System Fuel by Period of Construction (Non-Domestic) 2009-2019
% of row  
Period of ConstructionFuel TypeTotal
Mains GasHeating OilElectricityLPGOther
1900-1929191662226,719
1930-1949191662211,606
1950-1966231758113,063
1967-1977251953213,323
1978-1982241757212,788
1983-1993241064115,133
1994-199927863115,146
2000-200428565207,916
2005-2009315622114,536
2010-2014311351422,114
2015-201945742511,624
       
Total2710612153,968

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 represent 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 year (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 - the number is lower than the total in Table 1 because 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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