1. No category

EIE ENFORCE and EPCs in Slovenia
Presentation of the results and best
practices in Slovenia
Marjana Sijanec Zavrl
Building and Civil Engineering Institute ZRMK
IEE ENFORCE Final conference
Best Practises in energy saving – The Enforce Experience
The future of Energy Certification in Europe
Brussels, 22 June 2012
Status of EPBD transposition and
implementation (6/2012)
Directive EPBD and EPBD Recast - TOPICS
I – Methodology – EPBD methodology ready, common AES included
regulation promulgated in 9/2008, revision in 7/2010
minor corrections planned in line with Recast of EPBD
II - Minimum requirements – regulation promulgated in 9/2008,
revision done in 6/2010 (PURES-2, 2010)
EPBD Recast based, ambitious targets, 25% RES
III - Feasibility studies – transposition completed in 4/2008
IV - Energy certification – transposition at legal level completed,
regulation accepted in 9/2009, partly implem.
Recast changes already considered
software – commercial - ready, electr. EPC data base planned
V - Regular inspection of boilers – completed in 2008
VI - Regular inspection of air conditioning systems – completed 3/2008
VII – Independent experts – regulation on training, exams, authorized
training institutions and licences for experts – promulgated 1/2010
trainings started in 4/2012, 61 experts trained , 90 on the way
ZRMK is authorized training institutions
Current building regulation PURES 2010 –
corresponding to the cost optimal level?
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maximum U-values of the envelope elements
maximum allowed specific transmission heat
losses (Ht'),
maximum annual heat demand for space
heating and for residential buildings also for
cooling (Qnh, Qnc),
maximum primary energy for operation of the
energy systems (incl. lighting) – for residential
buildings Qp/Au = 200 +1,1 (60 f0 – 4,4 TL) kWh/(m2a)
(Qp), approx. 165 to 220 kWh/m2a,
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1,4
120,00
1,2
100,00
Qnh/Au (kWh/m2)
H'T (W/m2K)
1
0,8
0,6
0,4
flat roofs 0.20 40,00
windows 1.3 glazing 1.1 doors 1.6
0,00
0,8
1
1,2
1,4
0
0,2
fo
PTZURES 2002 LJ
PURES 2008 LJ
0,4
0,6
0,8
1
1,2
1,4
fo
PURES-­‐2 2010 LJ
0.28
60,00
0
0,6
walls floors b. flats 0.90 20,00
0,4
Umax (W/m2K) 80,00
0,2
0,2
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Min. requirements for systems
Public buildings must comply
with 10% more severe
requirements.
The use of RES is mandatory
in all new buildings since 2008,
i.e., min. 25% of total final
energy use for operation of the
energy systems in the building
must be covered by RES.
Maximum allowed annual heat demand for space heating per useful floor area Qnh/Au (kWh/m2)
Maximum allowed specific heat transfer coefficient by transmission H'T (W/m2K)
0
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PTZURES 2002
PURES-­‐2 2010 LJ after 1.1.2015
PURES-­‐2 2010 LJ until 31.12.2014
1,6
Financial – 3% discount rate - SFH
650
600
und
ound
Net present value/Au (discount rate 3%, 30 years)
550
NPV/Au
500
… + Mechanical
ventilation with heat
recovery
450
Heat pump air/ water
Condensing heat boiler
400
Pellet boiler
Boiler for Extra light fuel oil
Heat pump ground/water
… + Solar collectors
350
Condensing gas boiler
300
250
200
0,00
20,00
40,00
60,00
80,00
100,00
Qp/Au
120,00
140,00
160,00
180,00
200,00
Visok
energ
posta
vrede
Začne
invest
nižjo i
prihra
prihra
ključn
Financial & current regulation
Net present value/Au (discount rate 3%, 30 years)
650
600
550
Current
minimum
requirements PURES
2010
500
Buildings in
450
compliance
with
regulation PURES
2010
400
are at cost
optimum level or
350
better!
NPV/Au
Heat pump air/ water
Condensing heat boiler
Pellet boiler
Boiler for Extra light fuel oil
Heat pump ground/water
PURES
300
250
200
0,00
20,00
40,00
60,00
80,00
100,00
Qp/Au
120,00
140,00
160,00
180,00
200,00
Estimation – 10.000 EPCs / year
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new, existing (real-estate transactions),
all apartment buildings before 1980 with > 4 units: EPC by 2015
(20.000)
residential, non-residential
buildings, flats
public buildings
Nepremičninske transakcije HIŠE 3600
STAN. V BLOKIH 7000
• 
early steps –
design EPCs
for new buildings
Nepremičninske transakcije -­‐
STANOVANJA v BLOKIH
Nepremičninske transakcije -­‐ HIŠE
Novogradnje HIŠE
2500 izdanih gradbenih dovoljenjih za hiše in bloke
Najem za obdobje > 1 leta
STANOVANJA,
HIŠE,
NESTANOVANJSKE
in POSAMEZNI DELI
Novogradnje BLOKI
BLOKI pred 1980 EPC do 2015
Novogradnje NESTANOVANJSKE
1000 gradbenih Nepremičninske dovoljenj za transakcije
nestanovanjske
Podatki o izdanih gradbenih dovoljenjih za bloke
25.000 je blokov, od tega ocenimo 20.000 grajenih pred 1980, na leto odpade cca 7.000 stavb = izkaznic
Javne stavbe
STAVBE in POSAMEZNI DELI
(za javni prikaz)
Development of EPCs market in
Slovenia
IEE support
Number of users
Early beginners
Inovators
Visionars
Gap
Mass market
Pragmatics
Chasm
Careful
conservatives
End of
cycle
Sceptics
Time
Experts, training, licences, tools, quality control
2002
By CODEMA, Garry Werdell
2012
“CHASM”
IEE ENFORCE - Key contribution
• 
Promotion of EPCs and ENFORCE
energy auditing network
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• 
Identification of experts for certification
Development of 120 h training –
Experiences for official traning for EPCs
Focus on Quality control of EPCs and energy indicators
• 
Trained ENFORCE experts available for further support in soft loans
and subsidies scheme (use of EU funds for energy renovation)
Enforce network of auditors
National advisory
board
Participants
of
ENFORCE
training
ENFORCE lecturers at the
training
Call centre
Tel.: 080 1669
Experienced energy auditors
based on the certified
references
(good audits done)
Licenced
energy
advisors of
national
ENSVET
network
Link to ENFORCE auditors
ENFORCE network – 65 members
ENFORCE complementary
professional training - voluntary
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10 days + Homework,
10 modules, repetitorium of professional topics,
Course 1 implemented in 10/2011, further plans
Energy performance certifcates, energy audits
Energy advisory for RES and RUE in buildings
Participation in IEE ENFORCE auditors network
ENFORCE training course – 120 h
Week 1,2 -The training topics were divided into ten modules:
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Energy efficient construction and energy advice.
How to manage energy efficient construction or reconstruction of buildings?
Concepts of energy efficient construction and renovation.
Thermal protection, windows.
Legislation, the calculation of energy indicators.
Modern systems for the generation of heat and cold.
Cooling and ventilation, air conditioning, electricity and lighting.
Heating and hot water production – systems.
Calculation, quality control, economic viability, views.
Optimizing the energy efficiency of buildings.
Week 3 – Homework – 2 audits (new and existing buildings)
common exercise, advisory, calculation – Submission + FINAL EXAM
Evaluation of ENFORCE training
1. What is your general impression on the course? Helpful but could be improve
d Very good % 23 49% 24 Not interesJng Badly organised 51% •  45 participants of 50 passed the final exam
N° of parJcipan
ts 47 ENFORCE Final exam – common exercise
Vir.: Šabec Kalan arhitekti
Biro Petkovski
Quality control – common exercise
Energy demand for hea=ng Area of thermal envelope (m2) QC Experiences used in EPCs registry
XML file s control : Air exchange rate – heating
period
Data relations
(eg.: Aroof>Afloor)
B. Plausibility
Check
Probable intervals
(eg.: % of transparent
surface, ventilation
losses)
Extreme
values in
relation to
other EPCs
XML files control: Indoor air temperature – heating
period
new & all
residential
buildings
Envelope
condition
Final
energy
(payment
s)
RES,
primary
energy –
expressed
in CO2
Asset rating
Calculation based on
national customized
calculation methodology
based on EN ISO 13790
and CEN EPBD
standards
Existing non-residential
buildings,
public buildings
Operational rating
Procedure: energy
metering acc. to SIST
EN 15603
delivered exported
§  Final energy use for heat
conversion & electricity use
§  3 years average
§  Emissions of CO2 (delivered
– exported), reflecting CO2
reduction due to on site use
of RES
§  Share of RES produced on
site
Challenge – recommended measures /
renovation support
Kako čim bolj enostavno do
zanesljivih priporočil za
energijsko obnovo?
•  Izračuni
•  Hitra ocena
•  Energetski pregled
…
število stavb
Energetski razred stavb po sanaciji
90
80
70
60
50
40
30
20
10
0
A (od 0 do 15 kWh/m2)
B (od 15 do 35 kWh/m2)
C (od 35 do 60 kWh/m2)
D (od 60 do 105 kWh/m2)
E (od 105 do 150 kWh/m2)
obstoječe
21
15 cm TI na stene 15 cm TI na stene 20 cm TI na stene 20 cm TI na stene
25 cm TI na streho 25 cm TI na streho 25 cm TI na streho 25 cm TI na streho
2 slojna okna
3 slojna okna
3 slojna okna
3 slojna okna
mehansko prezračevanje
F (od 150 do 210 kWh/m2)
G (od 210 kWh/m2 naprej)
EnSOS web tool – TABULA based
For support in ENFORCE network
http://zidar.me/zrmk/#
Applications
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Customised for ENFORCE
audits
ons
Renovation scenario – wall insulation
Potential for wall refurbishment (end of 2010), only buildings in first three age
classes will undergo external wall refurbishment until 2020 (81% area)
(criteria - refurbishment status, life time of the element )
Wall insulation – (2008-2020)
Potential 81% of external wall areas
s
80.000 180 167 163 70.000 160 160 155 149 144 60.000 139 140 135 130 126 122 118 50.000 Moderate growth of residential buildings
Reduction of final energy use -23%
Reduction of specific en. use -31%
167 kWh/m2a > 115 kWh/m2a
120 115 100 40.000 Qf,h (GWh)
Au (1000 m2)
Qf,k/Au (kWh/m2 leto)
80 Poly. (Qf,h (GWh))
Poly. (Au (1000 m2))
30.000 60 20.000 40 10.000 20 -­‐
-­‐
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
-­‐23% 12% -­‐31% ENFORCE network – Poll 6/2012
(8 months after training, 18 m after network establishment)
How many ENFORCE advices did you give?
0
0 5
6 -­‐ 10
11 -­‐ 20
Did you use ENFORCE knowledge at your work?
more than 20
19%
no
32%
29%
6%
yes
68%
39%
7%
Do you have a national licence for EPC independent expert?
yes
22%
I plan to get it
During ENFORCE energy audits and advisory did you miss any specific knowledge?
no
26%
no
48%
52%
yes
52%
Thank you!
Contact:
E-mail: marjana.sijanec@gi-zrmk.si