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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 1 2019

Table A: Building Energy Ratings by Period of Construction (Non-Domestic)
% of row
Period of constructionEnergy rating 
ABCDEFGTotal
1900-19770729261691314,092
1978-199901137231271012,599
2000-200401644198487,632
2005-20091193616751513,351
2010-201482929167371,940
2015-2019243518831101,261

24% of non-domestic construction between 2015 and 2019 was rated "A"

Figure 1: Building Energy Ratings by Period of Construction (Non-Domestic) 1900-2019
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Building Energy Ratings (BER) audits were conducted for 1,261 non-domestic buildings constructed between 2015 and 2019 (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, 97% of domestic dwellings constructed between 2015-2019 received an "A" rating (separate CSO release). 

There were 55,933 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 with 8% rated “A”. The least energy efficient building types, defined by a “G” rating, were Workshops and maintenance depots (22%) followed by Other Buildings (20%) (see Figure 3).

The highest proportion of combined “A” and “B” ratings was in County Carlow and Kilkenny at 20% (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 17% for Dublin 18 and Dublin 24 (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 673 square metres (see Table 10). This average size varied from 3,388 square metres for hotels to 297 square metres for Restaurants and public houses.

BER Ratings
A0.618
B10.956
B22.287
B34.076
C16.687
C26.489
C35.286
D16.561
D24.964
E13.381
E22.619
F3.482
G6.33
ABCDEFG
Retail01442179612
Office18302514813
Restaurant/public house0729361864
Hotel1164326943
Warehouses017331910614
Workshops/maintenance depot092322141022
Industrial process building3362715938
Hospitals and primary health care615242014911
Community/day centre3273016958
Nursing residential homes and hostels8403015413
Schools and colleges24272217524
Sports facilities2302918768
Other218231811820
Table 1 Building Energy Ratings Certificates (Non-Domestic) 2009-2019
number
Period20092010201120122013201420152016201720182019Total
January451941501934445906343993393632613,612
February1473261661569466217435535364763625,032
March2072282012248487408076476984674205,487
April165230162178861796633665455374 4,519
May240189201204788883661647531456 4,800
June348184198163766857686597462385 4,646
July408193190243752841595561487393 4,663
August266287173213575785563587453353 4,255
September265221218245693998673683595385 4,976
October236206207289863882682640620351 4,976
November307303223328713964572530512389 4,841
December337193211309574853467436477269 4,126
             
Total2,9712,7542,3002,7458,8239,8107,7166,9456,1654,6611,04355,933
Table 2 Building Energy Ratings by Year (Non-Domestic) 2009-2019
number
YearEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
2009277818832638931724425020095791261182,437
201021551812663453562873052051271221291732,572
20114666120208292237214270164110941281412,090
201237511132033753332843242501721181542172,631
2013481153505851,1231,0958681,0358154953595411,0388,467
2014431143046641,2171,1458991,2029066145126511,2819,552
2015811292575189309197198836964984015171,0047,552
2016821012354707697966378396234773754828956,781
20171001132644176676655987795693962983977806,043
20181111112253304725304485264393272192995414,578
2019222350891089688148977042581421,033
               
Total6189562,2874,0766,6876,4895,2866,5614,9643,3812,6193,4826,33053,736
Table 3 Building Energy Ratings by Type of Building (Non-Domestic) 2009-2019
% of row 
Building TypeEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Retail01491715101075461220,535
Office11258111114118681312,053
Restaurant/public house0124810111917117645,063
Hotel126814151416106343775
Warehouses026912129118556147,440
Workshops/maintenance depot01357881398610222,254
Industrial process building3131310129610554381,146
Hospitals and primary health care646588811977911938
Community/day centre33121213107975458890
Nursing residential homes and hostels87141913116783113444
Schools and colleges2489109761073224792
Sports facilities26111312981085268484
Other2567107611756820922
               
Total12481212101296561253,736
Table 4 Building Energy Ratings by County (Non-Domestic) 2009-2019
% of row    
CountyEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Carlow037101513910754313693
Dublin 01-24124712121113107561114,603
Dublin County2247151210129656103,829
Kildare3259121310108555122,159
Kilkenny13881310810955417820
Laois225101111812985413615
Longford11571212910876911414
Louth124611128148658141,489
Meath1269131210118555131,802
Offaly126101212111385469611
Westmeath1268161381110555101,186
Wexford213711139119678141,506
Wicklow1351013119128657101,575
Clare0247111191312669111,480
Cork City013512149111274614491
Cork County1248131311129646114,838
Kerry124913149119547111,334
Limerick City11241213715975914449
Limerick County114813139139667111,898
Tipperary124816109119757111,475
Waterford City00381514111098588651
Waterford County12691211912855514828
Galway City115510131213976513615
Galway County2258111210119658132,751
Leitrim21611121020127369250
Mayo115812129119756131,410
Roscommon1146101010131184914542
Sligo114614109111173716811
Cavan01471212812985713675
Donegal136810119139755111,397
Monaghan1349119912786615539
               
Total12481212101296561253,736
– No non-domestic unit received this BER rating in this county
Table 5 Building Energy Ratings by Dublin Postal District (Non-Domestic) 2009-2019
% of row 
Dublin Postal DistrictEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Dublin 11126121091511648161,301
Dublin 22234911101312869122,170
Dublin 311681511158841013359
Dublin 4144581012151186610629
Dublin 5122913121011774716292
Dublin 60146109101012971013426
Dublin 6W013714715101071015210
Dublin 70334111211121175614661
Dublin 8113411911131086617914
Dublin 911561412111487479556
Dublin 10124781611111010759231
Dublin 11125811141011119459705
Dublin 1201351212111710747111,261
Dublin 1322101413101187939192
Dublin 14026714139131153710457
Dublin 151361517161010732361,100
Dublin 1614513148121464613186
Dublin 1702371812151285647372
Dublin 1812591014131596449771
Dublin 2011661210710126771368
Dublin 22114915161213104447591
Dublin 242348151310129534121,151
               
Total124712121113107561114,603
– 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) 2009-2019
% of row 
Heating System FuelEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Mains Gas23710121081086441514,123
Heating Oil1258121211161275445,440
Electricity11361313101396581232,708
LPG4412131512101075332967
Other Fuels47410787101087710498
               
Total12481212101296561253,736
Table 7 Main Space Heating System Fuel by County (Non-Domestic) 2009-2019
% of row 
CountyHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Carlow27106021693
Dublin 01-24394570114,603
Dublin County36558013,829
Kildare27863112,159
Kilkenny26145631820
Laois25175512615
Longford10226061414
Louth30960111,489
Meath281159101,802
Offaly17196022611
Westmeath191660311,186
Wexford101568511,506
Wicklow27961111,575
Clare211858311,480
Cork City313641491
Cork County25864214,838
Kerry91668621,334
Limerick City262710449
Limerick County251063111,898
Tipperary181861211,475
Waterford City3156222651
Waterford County23106332828
Galway City1078110615
Galway County131470312,751
Leitrim6266251250
Mayo92067411,410
Roscommon13235842542
Sligo9186751811
Cavan13195882675
Donegal112754621,397
Monaghan15215653539
       
Total2610612153,736
– 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
Retail174771120,535
Office317601112,053
Restaurant/public house282441525,063
Hotel463012121775
Warehouses331155207,440
Workshops/maintenance depot271454312,254
Industrial process building302736331,146
Hospitals and primary health care30125511938
Community/day centre37263142890
Nursing residential homes and hostels403015122444
Schools and colleges43262363792
Sports facilities40104361484
Other31115242922
       
Total2610612153,736
Table 9 Main Ventilation System by Type of Building (Non-Domestic) 2009-2019
% of row 
Building TypeMain Ventilation SystemTotal
Air ConditioningMechanical VentilationNatural Ventilation
Retail4645020,535
Office3556012,053
Restaurant/public house3410565,063
Hotel26866775
Warehouses146807,440
Workshops/maintenance depot165802,254
Industrial process building1913681,146
Hospitals and primary health care21672938
Community/day centre8686890
Nursing residential homes and hostels1693444
Schools and colleges7786792
Sports facilities291556484
Other19675922
     
Total3366153,736
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
Carlow4363253682,5888707273,0332392211,340976680853596
Dublin 01-243601,1833304,2721,3535712,8886583691,4202,2141,314927912
Dublin County2634983465,2191,3951,1393,8313584151,7822,4781,0111,422667
Kildare2233633674,1829836177,1066162872,3421,4061,391465615
Kilkenny2812802772,6361,1607661,4863312331,555976479225507
Laois3212552675,7951,0625554,3166602521,6852,4421,7351,645604
Longford3472662801,1671,1516595,8654244032,019906707196624
Louth3045313214,6951,1926144,4343422001,4501,5131,790842671
Meath2363953004,1768985131,7865392771,5251,6051,0343,007570
Offaly2784342221,9499726631,6327453071,5852,469372139569
Westmeath2955342402,0861,4016453,2151,0252561,1541,9601,053637592
Wexford2975132702,7638106502,0294593601,2891,459689662525
Wicklow2023012853,8966444242,1395393061,7311,701774280487
Clare2184762902,2319504312,336200257620986503492570
Cork City3577042154011,2624142,699172132736852533550
Cork County2796292763,3069704713,0184973311,3071,501829696580
Kerry2682802772,6496783043,5425342697571,023938328502
Limerick City2544962657,6309453951,4544994671,5218546772,841547
Limerick County2864432844,6881,1514623,2379184081,8352,488948950668
Tipperary2913362492,4061,6124244,1713693211,3801,240576178636
Waterford City2654613483,7857566902,075159659443624342929506
Waterford County6103182783,3951,3026083,8799911541,1801,2127641,114806
Galway City2833232084,0505982983,4803006561,4902,972447582518
Galway County2884352663,5451,0834751,8564142422,0351,403909449597
Leitrim2298542821,2805856324773961,3641,29855480
Mayo2592622873,5309006211,9169932561,3805361,007515477
Roscommon2794242561,9448105233,8877554931,379437634952481
Sligo3173982881,2229424412,9911,0372742,1371,510665883544
Cavan2243622472,3216214061,7093833533,052998621369408
Donegal2483863242,4601,2594952,7294994049681,031776546561
Monaghan3051663654,9721,2026711,6521355239461,852946880608
               
All2997322973,3881,1435742,9025473301,4581,627988804673
– 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
Carlow1,418580841626744845984473421448222644741954
Dublin 01-241,0794781,0355854387047053944954152711,205999586
Dublin County1,1205391,0106223366427814583784301451,046659596
Kildare1,2117559049584767506862863834591848871,153733
Kilkenny1,1879328705644535866344353684212761,399790743
Laois1,4078669425014447759232394324061271,161926824
Longford1,3509511,090726526888808347759314155627910855
Louth1,070597970631725762861389538399111810609776
Meath1,2145011,0036196199427542813494521831,408281704
Offaly9044579765595358146062074394231511,054668599
Westmeath1,0597029757495651,311625408461345147599705737
Wexford1,5604619808355249265005471,1186071541,191875833
Wicklow1,0076141,007696397665567398487450187863805629
Clare1,1436419436515887497271,8695496335041,319848751
Cork City1,199776968691599818483659494443978636834
Cork County1,1195069906595236245315375855751691,007705665
Kerry982763960631620796875374387492235673797751
Limerick City1,0681,4921,058502719782835380487944281766244915
Limerick County1,1147711,037660712644933458412376193775927805
Tipperary1,0087279437234279197533106363772381,091915710
Waterford City1,3596111,0237453896367594863813243611,192881752
Waterford County1,3456241,132730608557477402781370215867278838
Galway City1,0976841,2104855597398843153322681351,074820732
Galway County1,201698920579803699796334410329165863849771
Leitrim9287548568519995896184164811481,175756
Mayo1,1277819145645307037012203463953366112,666777
Roscommon2,0364691,1026376316246562987394374101,1576381,003
Sligo1,5698989535929626327833174545342501,197688981
Cavan1,0226131,042649679653809355566405257762957740
Donegal1,0926131,004653615795615343380556182732638721
Monaghan9926078597404411,239698575344365212946224693
               
All1,1565369896405107257214024994372131,014802682
– 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
Carlow336137195142175195230110959450145175224
Dublin 01-24254108237129100161162901128959263234134
Dublin County26412323113977141175101839331229152136
Kildare285176210218110174161658710440191270170
Kilkenny28121820612010513615098839963328187173
Laois334203223110104180218521009228227210192
Longford321227259167125202191811817337148206202
Louth252137226143168174199891218624182141180
Meath2861172351361452201776478984331767164
Offaly215107232123124193144461039735247155141
Westmeath250165231170131308147961037333139165173
Wexford37110723319412422011912826514336216207196
Wicklow237141236160911571329111110141190184146
Clare270150222150137172168439127143119313199175
Cork City284180222145136185113153109100217142194
Cork County26411823114612114512312413612238214163154
Kerry233181228144146188208888711656157190177
Limerick City253352246107168186185881082256418255213
Limerick County264180243138166151220102968344181215187
Tipperary238172223163100211178721518655254219167
Waterford City32214123516691146173110777678275204175
Waterford County31914626715314113011090176794619063195
Galway City26116228511113217521175756429232194173
Galway County28516521913119016518576977337196199181
Leitrim2211802042042401301479911233280180
Mayo26818421713112616816550838680131631183
Roscommon4841092621471501491586218010292264148237
Sligo3742122271392271461877410912460234155232
Cavan242146247150159150191821336761181213174
Donegal25914523915514518514079919442173150169
Monaghan23414420316910029315713879853819938159
               
All273123231144118167168921159647222187158
– No data is available for this building type and county
Table 13 Building Energy Ratings by Period of Construction (Non-Domestic) 2009-2019
% of row 
Period of ConstructionEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
1900-19290013891016139710126,430
1930-19490024101291511878131,552
1950-196601251010101311978142,917
1967-197701351112101311868133,193
1978-198202251011111310968132,709
1983-19930137131291310767124,904
1994-1999014916151114964564,986
2000-20040151016151211853487,632
2005-2009127111413101074351513,351
2010-2014881011129811644371,940
2015-2019241511986553211101,261
               
Total12481312101296561250,875
Table 14 Main Space Heating System Fuel by Period of Construction (Non-Domestic) 2009-2019
% of row  
Period of ConstructionFuel TypeTotal
Mains GasHeating OilElectricityLPGOther
1900-1929191662226,430
1930-1949191662211,552
1950-1966231659112,917
1967-1977261953213,193
1978-1982241757212,709
1983-1993241065114,904
1994-199927763114,986
2000-200428565207,632
2005-2009315622113,351
2010-2014301351421,940
2015-201943744511,261
       
Total2710612150,875

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 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 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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