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For more information on this release:
E-mail: environment@cso.ie Linh Nolan (+353) 1 4984209 Berna Lawlor (+353) 1 4984210
For general information on CSO statistics:
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, 25 July 2017, 11am

Non-Domestic Building Energy Ratings

Quarter 2 2017

% of row 
Building Type (2009-2017)Energy Rating Total
ABCDEFG
Retail0144217961217,556
Office1932251381310,385
Restaurant/public house07293618644,261
Hotel0154227943660
Warehouses0183319106146,332
Workshops/maintenance depot0923231310211,739
Industrial process building23626159391,024
Hospitals and primary health care4162321151011743
Community/day centre3253217968714
Nursing residential homes and hostels7382917413330
Schools and colleges23272217624645
Sports facilities2302917868395
Other215251912820756
Total11435211161245,540

Retail and Office units account for 61% of non-domestic BERs

Figure 1: Number of BERs by Grade (Non-Domestic) 2009-2017
go to full release

Approximately 3,000 Building Energy Rating (BER) audits were carried out on non-domestic buildings in the first half of 2017 (see Table 1). Since January 2009, BER audits have been conducted on a total of 45,540 non-domestic buildings (see Table 2). Retail and Office units account for 39% and 23% of the BERs respectively, followed by Warehouses at 14% (see Table 3). About 56% of Retail units received a "C" rating or higher, while that figure is 42% for Office units and 52% for Warehouses (see Table 3). 

Schools and colleges are the most energy efficient buildings with 50% receiving a "B" rating or higher, followed by Nursing residential homes and hostels at 45% (see Table 3). In contrast, a high proportion of “G” ratings were awarded to: Workshops and maintenance depots (21%); Warehouses (14%); Office buildings (13%); Retail units (12%); and Hospitals and primary health care buildings (11%).

Offaly had the highest combined “A” and “B” rating of 22%, followed by Carlow, Kildare and Laois at 20% each (see Table 4). In contrast, Leitrim and Limerick City at 8% each had the lowest proportion of combined “A” and “B” ratings. Kilkenny and Sligo at 18% each had the highest proportion of “G” rated buildings.

Dublin 15 and 18 had the highest proportion of combined “A” and “B” ratings at 25% and 20% respectively, while Dublin 6W had the highest proportion of “G” rated buildings at 17% (see Table 5). 

Buildings which used liquid petroleum gas (LPG) as their main space heating system fuel had the highest cumulative percentage of "A", "B" and "C" ratings (69%) though they accounted for only 2% of non-domestic BERs (see Table 6). Electricity was the most prevalent heating system accounting for 62% of all buildings followed by Mains gas at 26% and Heating oil at 10% (see Table 8).

Table 10 shows the average floor area classified by Building type and County. Hotels at 3,278 square metres and Industrial process buildings at 2,850 square metres had the highest average floor area. Retail units had both the highest average primary energy use (1,155 kWh/m2/year) as well as average carbon dioxide emissions (273 kgCO2/m2/year), while school and college buildings had the lowest figures for these two attributes (see Tables 11 and 12).

ABCDEFG
Retail01442179612
Office19322513813
Restaurant/public house0729361864
Hotel0154227943
Warehouses018331910614
Workshops/maintenance depot092323131021
Industrial process building2362615939
Hospitals and primary health care4162321151011
Community/day centre3253217968
Nursing residential homes and hostels7382917413
Schools and colleges23272217624
Sports facilities2302917868
Other215251912820
ABCDEFG
Retail01442179612
Office19322513813
Restaurant/public house0729361864
Hotel0154227943
Warehouses01833199614
Workshops/maintenance depot092324131020
Industrial process building2362616939
Hospitals and primary health care4162321151011
Community/day centre3243217969
Nursing residential homes and hostels7392917413
Schools and colleges23272217623
Sports facilities2302917868
Other215241812820
A-BCDEFG
Mains Gas22321910414
Heating Oil1735281244
Electricity11362211812
LPG313817833
Other27241814710
Table 1 Building Energy Ratings Certificates (Non-Domestic) 2009-2017
number
Period200920102011201220132014201520162017Total
January451941501934445906343993392,988
February1473261661569466217435535364,194
March2072282012248487408076476984,600
April1652301621788617966336654554,145
May2401892012047888836616475294,342
June3481841981637668576865974524,251
July408193190243752841611561 3,799
August266287173213575785563587 3,449
September265221218245693998673683 3,996
October236206207289862882682640 4,004
November307303223328713964572530 3,940
December337193211309574853467436 3,380
           
Total2,9712,7542,3002,7458,8229,8107,7326,9453,00947,088
Table 2 Building Energy Ratings by Year (Non-Domestic) 2009-2017
number
YearEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
200928117241385447362278278224106851401282,819
201021551812663453562873052051271221291732,572
20114666120208292237214270164110941281412,090
201237511132033753332843242501721181542172,631
2013481153495851,1231,0958681,0358154953595411,0388,466
2014431143046641,2171,1458991,2029066135126511,2819,551
2015831312615229399217218856964994035171,0167,594
2016901072424807718006388406254813764829146,846
201735631212003223232954082802011651893692,971
               
Total4318191,9323,5135,8315,5724,4845,5474,1652,8042,2342,9315,27745,540
Table 3 Building Energy Ratings by Type of Building (Non-Domestic) 2009-2017
% of row 
Building TypeEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Retail0149181591075461217,556
Office12359111214117681310,385
Restaurant/public house0124810111917117644,261
Hotel016713151417116343660
Warehouses0261013129118546146,332
Workshops/maintenance depot013688814108610211,739
Industrial process building2131210128610554391,024
Hospitals and primary health care44668881110771011743
Community/day centre34111014117985468714
Nursing residential homes and hostels7813181397893113330
Schools and colleges2389109761073324645
Sports facilities26111212881076268395
Other2456108712757820756
               
Total12481312101296561245,540
Table 4 Building Energy Ratings by County (Non-Domestic) 2009-2017
% of row 
CountyEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Carlow028101613109755313572
Dublin 01-24124712121113107561112,525
Dublin County1248151210129556103,252
Kildare3359121310108555121,867
Kilkenny13871410810955418706
Laois224121212811785414528
Longford11691112911976810340
Louth124611128148758141,227
Meath1269131211118545121,524
Offaly1371111121114644510508
Westmeath026817138111065591,021
Wexford114712139119678141,239
Wicklow1341113118128656111,349
Clare0236121191312669111,311
Cork City013612147121374614417
Cork County1248131311129646104,058
Kerry024913149119547121,188
Limerick City013412137151075913406
Limerick County114813139139667121,690
Tipperary1249161110109657111,198
Waterford City01381515111088598544
Waterford County12791312811855515688
Galway City113610141213967511487
Galway County12481112101110648122,235
Leitrim11711131020118479199
Mayo1158131110128657131,182
Roscommon01479101012985915448
Sligo114515109111073718695
Cavan11471312812886713576
Donegal136810129138765121,151
Monaghan13491181012666717409
               
Total12481312101296561245,540
– No non-domestic unit received this BER rating for this county
Table 5 Building Energy Ratings by Dublin Postal District (Non-Domestic) 2009-2017
% of row 
CountyEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Dublin 111251211101510639151,111
Dublin 21134912111412869111,945
Dublin 32268161115785911309
Dublin 4145581012151176710551
Dublin 5022913131011675516251
Dublin 6014611910813871112370
Dublin 6W12371571591061017186
Dublin 71235121312131175514551
Dublin 8113411911131077616792
Dublin 911581313121587467489
Dublin 101258815811910868202
Dublin 11247111412121110458570
Dublin 1201361211111710757101,035
Dublin 1312111512121196948163
Dublin 14026815129121153710393
Dublin 15136151916101173234931
Dublin 1614414129111564714167
Dublin 1703282312111396536247
Dublin 18064910131214106448704
Dublin 20277611911116971354
Dublin 2211791517111384346509
Dublin 2413491712912953412995
               
Total124712121113107561112,525
– 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) 2009-2017
% of row 
Heating System FuelEnergy Rating Total
AB1B2B3C1C2C3D1D2E1E2FG
Mains Gas23710121191086441411,676
Heating Oil1258121211161275444,531
Electricity01371313101296581228,086
LPG3411131512101075333830
Other4751089710977710417
               
Total12481312101296561245,540
Table 7 Main Space Heating System Fuel by County (Non-Domestic) 2009-2017
% of row 
CountyHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Carlow2796221572
Dublin 01-24374580012,525
Dublin County35559003,252
Kildare26864111,867
Kilkenny27145621706
Laois24165712528
Longford7216371340
Louth29961101,227
Meath291158101,524
Offaly19195922508
Westmeath181662311,021
Wexford91469521,239
Wicklow27962111,349
Clare211857311,311
Cork City303651417
Cork County24865214,058
Kerry91469621,188
Limerick City252730406
Limerick County25964111,690
Tipperary191761211,198
Waterford City3146122544
Waterford County22106422688
Galway City888310487
Galway County101374312,235
Leitrim7276052199
Mayo81967411,182
Roscommon11235943448
Sligo8186661695
Cavan13205792576
Donegal102755621,151
Monaghan16215653409
       
Total2610622145,540
– 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) 2009-2017
% of row 
Building TypeHeating System FuelTotal
Mains GasHeating OilElectricityLPGOther
Retail174781117,556
Office327601110,385
Restaurant/public house282441524,261
Hotel443112121660
Warehouses321155206,332
Workshops/maintenance depot251356421,739
Industrial process building302737331,024
Hospitals and primary health care29125611743
Community/day centre34263352714
Nursing residential homes and hostels393015123330
Schools and colleges40272463645
Sports facilities4194352395
Other29125442756
       
Total2610622145,540
Table 9 Main Ventilation System by Type of Building (Non-Domestic) 2009-2017
% of row 
Building TypeMain Ventilation SystemTotal
Air ConditioningMechanical VentilationNatural Ventilation
Retail4744917,556
Office3565910,385
Restaurant/public house3411564,261
Hotel26866660
Warehouses146806,332
Workshops/maintenance depot145811,739
Industrial process building1912691,024
Hospitals and primary health care20674743
Community/day centre7786714
Nursing residential homes and hostels793330
Schools and colleges7885645
Sports facilities301554395
Other20575756
     
Total3466045,540
– No non-domestic unit indicated the usage of this main ventilation system type for this building type
Table 10 Average Floor Area by Type of Building and County (Non-Domestic) 2009-2017
              m2
CountyRetailOfficeRestaurant/ public houseHotelWarehousesWorkshops/ maintenance depotIndustrial process buildingHospitals and primary health careCommunity/ day centreNursing residential homes and hostelsSchools and collegesSports facilitiesOtherAll building types
Carlow4693383742,5889005443,236239216255988706853611
Dublin 01-243631,1093433,9681,3405632,4576543851,1971,6411,423960875
Dublin County2555053555,2141,3451,2644,7744274821,7442,4019741,402663
Kildare2303813764,2239895587,2576562582,3121,5031,399507640
Kilkenny2852812852,8081,1816681,4862052351,269710544178507
Laois3422122805,7959185564,7246962541,5162,2611,4891,797624
Longford2322512531,1421,2767336,3774864362,019574707236625
Louth3215843184,7421,2476164,2482092011,3781,5132,212936704
Meath2384002974,1488915291,7885792871,6681,703985269550
Offaly3374712312,1619535741,6741743301,5853,570258105616
Westmeath3105642422,2211,5266043,0259192751,1062,0101,177407606
Wexford2954592732,7308557352,1803313319631,623794534528
Wicklow2153232722,4897524362,0935412791,3161,691640268471
Clare2244962982,1789224592,3882212445841,084285492584
Cork City3796882031511,335430411172132709948564550
Cork County2806072733,7209944783,1974533521,3201,355805613581
Kerry2682822682,7977083133,1864052736451,077467336483
Limerick City2563982797,6309663681,4543544671,5218546772,375521
Limerick County2934722884,7631,1924453,3939803951,7482,5871,141537686
Tipperary3013602432,5091,7374153,4616443501,2551,156609161628
Waterford City2884623613,4468117581,904141457970480248929516
Waterford County3443272733,3951,3256743,9481721541,6101,569754346678
Galway City2763502362,4966323363,4803007661,4902,677503732540
Galway County2693932682,8921,1225371,7622182341,9621,2861,013380551
Leitrim2628902751,2666055858784338691,16944503
Mayo2652542823,6109997241,9697502511,454590624564489
Roscommon2514492501,9448065875,3971,1766611,161437634393472
Sligo3293632841,7169643553,1816092682,1371,510938883558
Cavan2353812512,8066493971,7093973753,052785653398427
Donegal2543443052,3211,2165062,749567409904828667415561
Monaghan2991573524,8119727201,6561425461,4841,8521,0111,450596
               
All2977072993,2781,1555842,8504983381,3571,508995691663
– No data is available for this building type and county
Table 11 Average Primary Energy Use by Type of Building and County (Non-Domestic) 2009-2017
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
Carlow1,4975898316267708021,062473452248185620741993
Dublin 01-241,0945111,0456454296767934194954372841,167949611
Dublin County1,0795331,0176263436487664623614521581,025740598
Kildare1,2517908931,0044507446872904094741868571,185743
Kilkenny1,2429478986034516926345103724833061,425929780
Laois1,515906956501447801945242457457137987948840
Longford1,1779991,138696500958806323734314234627810781
Louth1,086577972662744761907630573412111764582787
Meath1,1994959976316828967822693514751801,754687740
Offaly8504519435535468356074194464231431,167872592
Westmeath1,0327299827495481,5086043484344121575821,448740
Wexford1,6925489678215401,0035037841,3188391571,1721,266899
Wicklow983614983788402658577381539587160900841636
Clare1,1646019386666337477291,9176086385621,358851762
Cork City9635201,0071,370618886458667494414965627713
Cork County1,1525339946695135795284724746061781,111873681
Kerry1,0037841,0056636036559965123904912361,012791780
Limerick City1,0881,0211,051502730790835533487944281766337818
Limerick County1,1347771,0496747336689384794063701917701,709833
Tipperary9937389397144189058822494103452388471,060719
Waterford City1,4075861,0208263896158684892391552531,459881772
Waterford County1,0526181,1817306185494666417813491921,051762707
Galway City9366331,2115675487588843152862681371,191813694
Galway County1,183672909600748721832471405339195867853774
Leitrim9447288727691,0297299714124961661,356765
Mayo1,1528049135705486647322423313943486262,725803
Roscommon2,0264571,1486376166426172848094214101,157735975
Sligo1,6621,0399565141,0196258954924625342501,1446881,037
Cavan9976021,048646689614809348559405335833950746
Donegal1,1186751,007657650783632340377604213745875747
Monaghan1,1045668597965731,368758575349324212929224765
               
All1,1555569956695117147504214884632131,031933697
– No data is available for this building type and county
Table 12 Average Carbon Dioxide Emissions by Type of Building and County (Non-Domestic) 2009-2017
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
Carlow3551391921421821842491101025241141175233
Dublin 01-2425811624014298154182951129362252222140
Dublin County25412123314078142170101799835221171137
Kildare295185207229105172161669310741184277173
Kilkenny2942212121281061621501198311473334223182
Laois3592122271101051862235310610530189214196
Longford280238271159119219191751757357148185185
Louth2561332271511741782101461298924173137183
Meath283115234138161209184617910342398153172
Offaly2021062241221261981451001059733278205139
Westmeath24417223217012735614380978535134344173
Wexford40212723019212723811918431220137207301212
Wicklow231141231179921551358612413435198192147
Clare275141220154147171169451141144133315201178
Cork City22811923230714019710215310991213140164
Cork County27212423214811913412310811112740236203158
Kerry2381862391501421562381208811456241189183
Limerick City2582392451071711881851261082256418277190
Limerick County269181246142170157221106958044180397194
Tipperary2351742221609920620957977955194255169
Waterford City33313523418891141202110493755336204180
Waterford County2471442791531441281081501767343228173163
Galway City22315028613213017921175646430252192164
Galway County281159216136177170194110967544196202182
Leitrim2251742071842471592319812137305182
Mayo27419021713313015917356798683147645190
Roscommon482106273147146154149541979692264170230
Sligo39524622811724115121311911212460213155245
Cavan236143248149162140191811326780197209175
Donegal26616024015615418214378909449174206175
Monaghan26013420418512832317013880763819538175
               
All2731282321501181641759611310148225218162
– No data is available for this building type and county

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 2-12 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; LPG; Biogas; Oil; Electricity; 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.

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