Portuguese Certification System for Energy an Indoor Air Quality Statistical Information about the Portuguese Certification System

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1 Portuguese Certification System for Energy an Indoor Air Quality Statistical Information about the Portuguese Certification System Manuel Casquiço/ ADENE Tabula Expert Workshop - Energy Assessment of National Housing Stocks Wels, 29 th February 2012

2 Contents Energy Performance Certificate Central registry Business intelligence Statistical information Learning about EPC recommendations

3 Contents Energy Performance Certificate Central registry Business intelligence Statistical information Learning about EPC recommendations

4 Portuguese Energy Performance Certificate Residential Buildings Identification of the Building Energy Performance Rate (Asset Rate) From A + to G CO 2 Emissions Energy Needs for heating, cooling and hot water (kwh/m 2.year) Other information Typology, area, type of walls, floor, roof, windows, hvac and hot water equipment, ventilation

5 Recommendations are the real added value of a certificate ADENE instructed experts to pay particular attention to this part of the certificate Short description of recommendations Range of values for: Reduction of the energy bill Estimated cost of investment Payback period New energy rate, if all recommendations marked in bold are implemented

6 Contents Energy Performance Certificate Central registry Business intelligence Statistical information Learning about EPC recommendations

7 EPC are issued by a qualified expert Information provided by experts is all stored in a central database for process monitoring Information provided by the expert is: All stored in a central database for future monitoring of progress (incl. EPBD implementation) Part used to assemble the certificate, delivering it instantaneously to the expert as a PDF file ADENE website Restricted area

8 Feeding the database Expert issues the certificate using a web-based centralised platform Restricted access area of the SCE website It s the qualified experts interface with the EPC registration

9 Feeding the database The expert fills an on-line electronic form with information about the building Detailed input of technical elements Integration of calculation software tools with centralised platform via XML

10 Feeding the database About certificates issued so far Residential Buildings 90% Non-Residential Buildings 10%

11 Contents Energy Performance Certificate Central registry Business intelligence Statistical information Learning about EPC recommendations

12 Business Intelligence Extracting the information from the database Data Business Intelligence Information Type of Information 1. Dashboards 2. Static reports 3. Ad-hoc reports

13 Business Intelligence Dashboards (Graphical interface) Updated information Available Dashboards: Certificates Qualified Experts EPC Recommendations

14 Business Intelligence Static Reports (tables interface) Updated information Static Reports Solar Panels Energetic Needs and EEI Opaque building envelope and glazing Geographic distribution of Experts EPC Recommendations

15 Business Intelligence Ad-Hoc Reports (Graphics or tables with information selected by the user) Possible to build the information All information contained in EPC available Technical information

16 Contents Energy Performance Certificate Central registry Business intelligence Statistical information Learning about EPC recommendations

17 More than certificates issued so far 70% of the certificates for existing buildings Dashboard Year DCRs EPC for new buildings (project phase) CEs EPC for existng build. CE/DCR First EPC for new building.

18 Real state market dropped due to economic crisis Number of certificates issued decreased by 25 to 30% related to 2010 Dashboard Evolution of the EPC Year 2011 DCRs EPC for new buildings (project phase) CEs EPC for existng build. CE/DCR First EPC for new building.

19 A and B rates are predominant in new buildings About 60% of existing building are below the new building s threshold Dashboard New buildings (DCR) Existing buildings (CE)

20 Installation of solar thermal collectors is mandatory 97% of new buildings have solar thermal collectors Dashboard New buildings (DCR) Existing buildings (CE)

21 Building typology (Residential Buildings) Predominance of T2 and T3 typology (number of rooms) Ad-hoc report T4 10% T5 3% T0 2% T1 13% T3 36% T2 36% Typology T0 T1 T2 T3 T4 T5 Area (m 2 ) 38,03 52,69 77,09 113,10 158,24 199,85 Single- Family 30% Apartments 70%

22 Existing buildings widely exceed current energy needs limits Ad-hoc report Existing buildings 200 kwh.m².year Nic/Ni Nvc/Nv Nac/Na Nic/Ni Nvc/Nv Nac/Na Nic/Ni Nvc/Nv Nac/Na Nic/Ni Nvc/Nv Nac/Na Necessidades Energy Needs Valor Energy limite Limit BEJA BRAGANÇA LISBOA PORTO ü Energy needs can be as up to twice the limit imposed by Regulation ü This diagnosis allows to prove the existing potential for building s major renovation

23 New buildings have heating energy needs 10% to 25% below the limits Ad-hoc report New buildings Nic/Ni Nvc/Nv Nac/Na Nic/Ni Nvc/Nv Nac/Na Nic/Ni Nvc/Nv Nac/Na Nic/Ni Nvc/Nv Nac/Na kwh.m².year Valor Energy limite Needs Necessidades Energy Limit BEJA BRAGANÇA LISBOA PORTO ü Energy needs are necessarily lower than the limits imposed by Regulations ü Cooling and hot water energy needs are 50% below the limits ü The largest heating energy needs occur in Bragança ü The largest cooling energy needs occur in Beja

24 U-Value for windows High potential of renovation on existent buildings Ad-hoc report 3,80 W/m 2.ºC 3,67 3,54 2,80 2,97 2,84 2,93 2,65 2,68 DCR CE/DCR CE DCR CE/DCR CE DCR CE/DCR CE I1 I2 I3 Lisboa Beja Porto Bragança DCRs EPC for new buildings (project phase) CEs EPC for existng build. CE/DCR First EPC for new building.

25 U-Value for exterior walls High potential of renovation on existent buildings. Ad-hoc report W/m 2.ºC 1,66 1,00 1,04,57,56,52,51,49,47 DCR CE/DCR CE DCR CE/DCR CE DCR CE/DCR CE I1 I2 I3 Lisboa Beja Porto Bragança DCRs EPC for new buildings (project phase) CEs EPC for existng build. CE/DCR First EPC for new building.

26 Contents Energy Performance Certificate Central registry Business intelligence Statistical information Learning about EPC recommendations

27 Energy Performance Certificates Recommendations It is possible to analyze the potential of refurbishment Is possible to know Type of recommendations proposed by the experts Energy Savings Investment Payback period New energy rates if recommendations are implemented Useful to: Target policies and incentives Tailor information and campaigns for home owners Increase technical knowledge on building stock

28 Ad-hoc report Energy Performance Certificates Recommendations If all measures that are suggested by the experts on those certificates were implemented then Energy rating (real) before recommendations Energy rating ( estimated ) after recommendations A+ 0,4% A+ 5% A 4% A 31% B 25% B 31% B - 11% B - 20% C 33% C 9% D 14% D 3% E F G 2% 4% 7% 40% are above new building s threshold E F G 1% 0,2% 0,1% 86% could be above new building s threshold

29 About 2/3 of recommendations are on DHW, H and ST systems EP rating should give more focus on the quality of the building s envolope Ad-hoc report Buildings with recomendations 6% Expert s recommendations focus on the following areas: Other 5% DHW 30% 94% EPC without IM EPC with IM Investment and improvment identified Savings 0,4Toe/year Average 6 to 11 years payback Windows/ Glazing 12% Renewable energy (solar systems) 21% Insulation (roof, wall, floor) 18% Heating & Cooling 15% 1250 to 6500 investment per building

30 Next challenge Monitoring the implementation of EPC recommendations How to?

31 One day all buildings shall be green

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