Do “green”, residential properties exist in Wroclaw’s county?

Malgorzata SlicznaDepartment of Ecological Economics

Wroclaw University of EconomicsE-mail: malgorzata.sliczna@ue.wroc.pl

ERES 2013, 3-6 July 2013, Vienna

The structure of the presentation:

1.Introduction

2.Research methodology

3.Results and findings

4.Future directions of the development

5.Conclusions

http://supermozg.gazeta.pl/supermozg/1,91628,8267925,Ekodomy.html

http://supermozg.gazeta.pl/supermozg/1,91628,8267925,Ekodomy.html

Introduction

• Energy Performance of Buildings

Directive [Directive 2010/31/EU]

• subsidies for investors in „green

buidling”, environmental friendly solutions

• Strategy for the development of Lower

Silesia Voivodeship 2020 (Strategia Rozwoju

Województwa Dolnośląskiego 2020)

Research methodology

Wroclaw County:

Area: 1118 km2Cities 3Villages 231

The research studies statistical and real estate data.Research period: year 2011 and 2012

Source of data

District Inspector of Building Control for Wroclaw’s

CountyNumer of energy

efficient buildings (based on

EPC)

Cadastre office of Wroclaw’s

County.

Number of sold buildings and their

price

Research methodology

• The paper closely examines put to use, “green” residential properties in the years 2011-2012.

• The number of researched estates is 2205, all from Wroclaw County (Wroclaw city not included)

Research methodologyTotal Wroclaw County

Number of „put to use” buidlings in year

2011

Number of” put to use” buidlings

in year 2012

2205One-dwelling buildings 989 1216

240Two and more dwelling buildings 75 165

5Residences for communities 4 1

2450 TOTAL 1068 1382

Energy efficient residential buildings

PE: numerical indicator of primary energy use expressed in kWh/m2 per year

„Primary energy”: energy from renewable and non-renewable sources which has not undergone any conversion or transformation process

Energy efficient residential buildings

• Criterion PE* ≤ 100 kWh/m2*a

Reason: Polish average building145 kWh/m2*a

382 buildings were identified*Primary energy

Energy efficient residential buildings in Wroclaw CountyPE<15; 0,52%15≤PE<30; 2,88%

30≤PE<50; 7,85%

50≤PE<70; 26,18%

70≤PE<85; 22,77%

85≤PE<100; 39,79 %

[Source: self elaboration , n=382, years 2011&2012, Wroclaw County]

PE Primary energy [kWh/m2*a]

Energy type used in the buildings in Wroclaw County

gas coal electric energy

biomass solar heating oil0

20

40

60

80

100

120

140

86

34 38

112

36

11

94

38 44

116

28

2

Series1 Series2Year 2011 Year 2012

[Source: self elaboration , n=382, years 2011&2012, Wroclaw County, multiple anwsers]

Relation between PE and Energy performance (FE)

year 2011 year 2012

105 102

88 87PE>FE

PE<FE

[Source: self elaboration , n=382, years 2011&2012, Wroclaw County]

coal heaters

oil heaters

gas heater

biomass burners

fireplaces

heat recovery ventilation systems

fotovoltaic moduls

solar panels

good isolation (wall U<0,2

heat pumps

16.23%2.36%

46.34%13.87%

45.81%19.37%

0.00%16.23%

6.81%19.11%

Procent of buildings with installed eco-solutions

[Source: self elaboration , n=382, years 2011&2012, Wroclaw county]

Number of solutions installed in one building

1 2 3 4 5

133

156

67

170

Number of solutions installed in 1 building

Num

ber o

f bui

ldin

gs w

ith th

e co

mbi

natio

n of

sol

ution

s

[Source: self elaboration , n=373, years 2011&2012, Wroclaw County]

Number of buildings with the combination of eco-solutions

gas heaters + fireplace

gas heaters + solar panels

biomass heaters + hrvc

gas heaters + hrvc

heat pump + solar panels

heat pump + hrvc

43

23

19

17

3

13

56

16

27

26

1

8

year 2012year 2011

Number of buildings*hrvc- heat recovery ventilation system

[Source: self elaboration , n=373, years 2011&2012, Wroclaw County]

Number of sold buildings

• 8 buildings in the year 2011• 9 buildings in the year 2012

http://supermozg.gazeta.pl/supermozg/1,91628,8267925,Ekodomy.html

http://supermozg.gazeta.pl/supermozg/1,91628,8267925,Ekodomy.html

Obstacles

• Lack of data about all aspects of the buildings, only data on energy effectivness in new buildings is avaluable hence not „green” but energy efficient buildings were researched

• EPC’s may not be correct in all cases

Conclusions

• Energy Performance Certificates (EPCs) are not verified • Most of the energy efficient buildings are build by the

owner• Those buildings are not popular in Wroclaw county (17%

with PE<100 kWh/m2 per year; 1,86% with PE<50 kWh/m2 per year)

• The most popular solutions: biomass burners (fireplaces), solar panels

Source: edgegoodrich.co.uk

Conclusions

• More research on the correctness od EPCs is necessary, • There should be more information evaluable on

technical issues of the buidlings, for professionals and researchers

Source: edgegoodrich.co.uk

Future research

• Quantify the energy efficient buildings in city of Wroclaw• Research on the value of those buildings in comparison

to traditional real estate• Determine the added value of environment friendly

solutions

Source: edgegoodrich.co.uk

References• (2012). Strategia Rozowju Powiatu Wrocławskiego na lata 2012-2020. Wrocław.• Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy

performance of buildings - LexUriServ.do. (2013). Retrieved from http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:153:0013:0035:EN:PDF

• Główny Urząd Statystyczny. Budownictwo mieszkaniowe I –III KWARTAŁ 2012 R. Retrieved from http://www.stat.gov.pl/cps/rde/xbcr/gus/PBS_budownictwo_mieszk_1-3kw_2012.pdf

• Urząd Marszałkowski Województwa Dolnośląskiego. Strategia Rozwoju Województwa Dolnośląskiego 2020.• Doherty, P. & Leinberger, C., 2010. Brookings Institution- research. [Online] Available at:

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Techniczne.• Lützkendorf, T., 2011. How to break the vicious circle of blame? The contribution of different stakeholders to a

more sustainable built environment. Sustainability in architecture and construction, (6), pp.1-10. http://www.fec.unicamp.br/~parc/vol1/n6/vol1-n6-LUTZKENDORF.pdf.

• Nelson, A. & Rakau, A.J., 2010. Green Buildings: A Niche Becomes Mainstream. Deutsche Bank Research.• PlGBC, n.d. Polish Green Building Council. [Online] Available at:

http://www.plgbc.org.pl/aktualnoci-a-wydarzenia/171-architektura-i-budownictwo-zrownowaone.html [Accessed 28 May 2012].

• Wnuk, R., 2006. Budowa domu pasywnego w praktyce. Warszawa: Wydawnictwo Przewodnik Budowlany.

Thank you for your attention

Malgorzata G. SlicznaDepartment of Ecological Economics

Wroclaw University of EconomicsE-mail: malgorzata.sliczna@ue.wroc.pl

malgorzata.sliczna@gmail.com