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Energy-saving policies and low-energy residential buildings: an LCA case study to support decision makers in Piedmont (Italy)

  • LIFE CYCLE MANAGEMENT
  • Published:
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Abstract

Background, aim and scope

A low-energy family house recently built in Northern Italy was selected by Regione Piemonte as an outstanding example of resource efficient building. An economic incentive was awarded to cover the extra costs of the thermal insulation, windows and equipment in order to decrease the yearly winter heat requirement from the legal standard of 109 to 10 kW h/m2, while existing buildings in the study area typically require 200 kW h/m2. As the building was claimed to be sustainable on the basis of its outstanding energy-saving performance, an ex post life cycle assessment (LCA) was set up to understand whether, and to what extent, the positive judgement could be confirmed in a life cycle perspective.

Materials and methods

After an analysis of the literature on LCA of whole buildings, a detailed life cycle assessment has been conducted by encompassing all the life cycle phases. Emphasis was given on the end-of-life stage, too often disregarded due to lack of data or heavily simplified. Virtually all the materials used in the building structure, finishes and equipment were considered, paying attention to their expected service duration and the recycling potential. In order to increase transparency and therefore credibility and acceptance of LCA in the building sector, an uncertainty analysis was carried out.

Results and discussion

The dramatic contribution of material-related impacts emerged. Structure and finishes materials represented the highest relative contribution, but maintenance operations also played a major role. The contributions of equipment, construction stage and transportation were minor. The important role of the recycling potential also emerged. Unlike standard buildings, where heating-related impacts overshadow the rest of the life cycle, there is no single dominating item or aspect. Rather, several of them play equally important roles.

Conclusions

The study confirmed that the initial goal of resource and environmental efficiency was reached, but to a much lower extent than previously thought. In comparison to a standard house, while the winter heat requirement was reduced from 109 to 10 kW h/m2 (10:1 ratio), the life cycle energy was only reduced by 2.1:1 and the carbon footprint by 2.2:1.

Recommendations and perspectives

The findings emphasise the need for incorporating the life cycle approach in energy-saving policies and economic incentives schemes in the building sector, in Italy and elsewhere, as single-step improvements might not be effective in a life cycle perspective and could even disappoint expectations.

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References

  • Adalberth K, Almgren A, Petersen EH (2001) Life cycle assessment of four multi-family buildings. Int J Low Energy Sustainable Buildings 2:1–21

    Google Scholar 

  • Althaus HJ, Kellenberger D, Doka G, Künniger T (2005) Manufacturing and disposal of building materials and Inventorying Infrastructure in ecoinvent. Int J LCA 10:35–42

    Article  CAS  Google Scholar 

  • APAT (2005) I rifiuti da costruzione e demolizione. Rome, Italy. http://www.apat.it. Accessed Aug 1, 2009

  • Arena AP, Rosa C (2003) Life cycle assessment of energy and environmental implications of the implementation of conservation technologies in school buildings in Mendoza—Argentina. Build Environ 38:359–368

    Article  Google Scholar 

  • Blanchard S, Reppe P (1998) LCA of a residential home in Michigan. School of Natural Resources and Environment. University of Michigan, USA

  • Blengini GA (2009) Life cycle of buildings, demolition and recycling potential: a case study in Turin–Italy. Build Environ 44:319–330

    Article  Google Scholar 

  • Blengini GA, Garbarino E (2006) Sustainable constructions: ecoprofiles of primary and recycled building materials. Proceedings of the International Symposium Mining Planning and Equipment Selection MPES2006, September 20–22, Turin, Italy.

  • Brimacombe L, Shonfield P (2001) Sustainability and steel recycling. New steel construction 9(2): 19-21. ISSN 0968-0098

  • Buchanan AH, Bry Levine S (1999) Wood-based building materials and atmospheric carbon emissions. Environ Sci Policy 2:427–437

    Article  Google Scholar 

  • Chen TY, Burnett J, Chau CK (2001) Analysis of embodied energy use in the residential building of Hong Kong. Energy 26:323–340

    Article  Google Scholar 

  • Citherlet S, Defaux T (2007) Energy and environmental comparison of three variants of a family house during its whole life span. Build Environ 42:591–598

    Article  Google Scholar 

  • Dewulf J, Van der Vorst G, Versele N, Janssens A, Van Langenhove H (2009) Quantification of the impact of the end-of-life scenario on the overall resource consumption for a dwelling house. Resour Conservat Recycl 53:231–236

    Article  Google Scholar 

  • Ding GKC (2008) Sustainable construction—the role of environmental assessment tools. J Environ Manage 86:451–464

    Article  Google Scholar 

  • ECOINVENT (2007) Life cycle inventories of production systems. Swiss Centre for Life Cycle Inventories. http://www.ecoinvent.ch. Accessed Aug 1, 2009

  • EDILCLIMA (2006) Software manual EDILCLIMA. EC501–Edificio Invernale (L. 10/91) vers. 6. http://www.edilclima.it. Accessed Aug 1, 2009

  • Erlandsson M, Borgb M (2003) Generic LCA—methodology applicable for buildings, constructions and operation services: today practice and development needs. Build Environ 38:919–938

    Article  Google Scholar 

  • Erlandsson M, Levin P (2005) Environmental assessment of rebuilding and possible performance improvements effect on a national scale. Build Environ 40:1459–1471

    Google Scholar 

  • Forsberg A, von Malmborg F (2004) Tools for environmental assessment of the built environment. Build Environ 39:223–228

    Article  Google Scholar 

  • Frischknecht R, Jungbluth N (2007a) Overview and methodology. Data v2.0. Ecoinvent report no.1. http://www.pre.nl/ecoinvent. Accessed Aug 1, 2009

  • Frischknecht R, Jungbluth N (2007b) Implementation of life cycle impact assessment methods. Data v2.0. ecoinvent report No.3. http://www.pre.nl/ecoinvent. Accessed Aug 1, 2009

  • Gerilla GP, Teknomo K, Hokao K (2007) An environmental assessment of wood and steel reinforced concrete housing construction. Build Environ 42:2778–2784

    Article  Google Scholar 

  • Haapio A, Viitaniemi P (2008) A critical review of building environmental assessment tools. Environ Impact Asses 28:469–482

    Article  Google Scholar 

  • Huberman N, Pearlmutter D (2008) A life-cycle energy analysis of building materials in the Negev desert. Energy Build 40:837–848

    Article  Google Scholar 

  • Huijbregts MAJ, Gilijamse W, Ragas AMJ, Reijnders L (2003) Evaluating uncertainty in environmental lifecycle assessment. A case study comparing two isolation options for a Dutch one-family dwelling. Environ Sci Technol 37:2600–2608

    Article  CAS  Google Scholar 

  • IPCC (1996) Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories. http://www.ipcc.ch/. Accessed Aug 1, 2009

  • Junnila S (2004) Life cycle assessment of environmentally significant aspects of an office building. Nordic Journal of Surveying and Real Estate Research, Special Series 2

  • Kellenberger D, Althaus HG (2009) Relevance of simplifications in LCA of building components. Build Environ 44:818–825

    Article  Google Scholar 

  • Kofoworola EF, Gheewala SH (2008) Environmental life cycle assessment of a commercial office building in Thailand. Int J LCA 13:498–511

    Article  CAS  Google Scholar 

  • Lee K, Tae S, Shin S (2009) Development of a Life Cycle Assessment Program for building (SUSB-LCA) in South Korea. Renew Sust Energ Rev 13:1994–2002

    Article  Google Scholar 

  • Matasci C (2006) Life cycle assessment of 21 buildings: analysis of the different life phases and highlighting of the main causes of their impact on the environment. Mémoire N. 128/2006. Dissertation, Univ. of Genève

  • MICENE (2004) Misure dei consumi di energia elettrica in 110 abitazioni italiane. eERG, end-use Efficiency Research Group. Dipartimento di Energetica. Politecnico di Milano.

  • Mithraratne N, Vale B (2004) Life cycle analysis model for New Zealand houses. Build Environ 39:483–492

    Article  Google Scholar 

  • Ortiz O, Bonnet C, Bruno JC, Castells F (2009a) Sustainability based on LCM of residential dwellings: a case study in Catalonia, Spain. Build Environ 44:584–594

    Article  Google Scholar 

  • Ortiz O, Castells F, Sonnemann G (2009b) Sustainability in the construction industry: a review of recent developments based on LCA. Constr Build Mater 23:28–39

    Article  Google Scholar 

  • Peuportier B, Putzeys K (2005) Inter-comparison and benchmarking of LCA-based environmental assessment and design tools. http://www.etn-presco.net/generalinfo/index.html. Accessed Aug 1, 2009

  • Peuportier BLP (2001) Life cycle assessment applied to the comparative evaluation of single family houses in the French context. Energy Build 33:443–450

    Article  Google Scholar 

  • PRè Consultants (2006) SimaPro 7 software. http://www.pre.nl/. Accessed Aug 1, 2009

  • Provincia di Torino (1997) Piano Energetico della Provincia di Torino 1997. http://www.provincia.torino.it. Accessed Aug 1, 2009

  • Rabl A, Benoist A, Dron D, Peuportier B, Spadaro J, Zoughaib A (2007) How to account for CO2 emissions from biomass in an LCA. Int J LCA 12:281

    Article  Google Scholar 

  • Sartori I, Hestnes AG (2007) Energy use in the life cycle of conventional and low-energy buildings: a review article. Energy Build 39:249–257

    Article  Google Scholar 

  • Scheuer C, Keoleian GA, Reppe P (2003) Life cycle energy and environmental performance of a new university building: modeling challenges and design implications. Energy Build 35:1049–1064

    Article  Google Scholar 

  • Sonnemann GW, Schumacher M, Castells F (2003) Uncertainty assessment by a Monte Carlo simulation in a life cycle inventory of electricity produced by a waste incinerator. J Cleaner Prod 11:279–292

    Article  Google Scholar 

  • Thormark C (2001) Environmental analysis of a building with reused building materials. Int J Low Energy Sustainable Buildings 2000:1

    Google Scholar 

  • Thormark C (2002) A low energy building in a life cycle-its embodied energy, energy need for operation and recycling potential. Build Environ 37:429–435

    Article  Google Scholar 

  • Trusty WB (2000) Introducing assessment tool classification system. Advanced Building Newsletter. http://www.athenasmi.ca/publications/publications.html. Accessed Aug 1, 2009

  • UNI (2001) UNI EN 832. Thermal performance of buildings. Calculation of energy use for heating. Residential buildings. CEN European Bureau for Standardisation

  • Werner F, Althaus HJ, Richter K, Scholz RW (2007) Post-consumer waste wood in attributive product LCA. Context specific evaluation of allocation procedures in a functionalistic conception of LCA. Int J LCA 12:160–172

    Article  CAS  Google Scholar 

  • Werner F, Nebel B (2007) Wood & other renewable resources. Int J LCA 12:462–463

    Article  CAS  Google Scholar 

  • Zabalza Bribián I, Aranda Usón A, Scarpellini S (2009) Life cycle assessment in buildings: state-of-the-art and simplified LCA methodology as a complement for building certification. Build Environ 12:2510–2520

    Article  Google Scholar 

Download references

Acknowledgements

The authors would like to thank Studio Roatta Architetti Associati in Mondovì (www.studioroatta.it) and Dr. Mauro Bertolino of Regione Piemonte for the active involvement in the research, Msc. Agnese Fiorenza for data collection and elaboration and Dr. Leo Breedveld of 2B Consulenza Ambientale (www.to-be.it) for peer reviewing the first version of the LCA.

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Correspondence to Gian Andrea Blengini.

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Responsible editor: Walter Klöpffer

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Blengini, G.A., Di Carlo, T. Energy-saving policies and low-energy residential buildings: an LCA case study to support decision makers in Piedmont (Italy). Int J Life Cycle Assess 15, 652–665 (2010). https://doi.org/10.1007/s11367-010-0190-5

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