The green building isa revolution in the construction industry in recent years. The concerns of green buildings are the environmental impacts and economic benefits to the human world. Eco-efficiency integrates the two concerns as one indicator to assess the greenness and economic efficiency for buildings.
This research developed the eco-efficiency indicators for green buildings. Four environmental impacts are energy, water, waste and recycle and CO2 emissions. Four economic costs of design, construction, operation and green are the economic components. From analyzing the characteristics of buildings, three prominent indicators are determined: (1) construction cost/energy consumption, (2) operation cost/CO2 emissions, and (3) green cost/CO2 emissionsreduction.
Eco-efficiency calculations were performed from the data of 9 LEED buildings. The first two indicators point out different strategy options for the ‘greenness” of buildings. For example, higher construction cost maybe for the platinum buildings resultin higher value of construction cost/energy;the lower operation costforagreener building brings smallervalue of operation cost/CO¬2. The values of eco-efficiency can be increased or decreased to mean better performance. In the third indicator, with lower green costs, the certified buildings have the best eco-efficiency in CO2 emissions reduction.
Although the energy consumption and CO2 emissions of LEED gold buildings are smaller, the green cost of these buildings is much higher. Therefore, the gold building’s eco-efficiency is not better than those with lower certified levels.

1. Adler, A., Anderson, J., Karolides, A., Macaluso, J., Waier, P., and Walker, A. (2011). Green building – project planning & cost estimating. John Wiley and Sons Publishing.
2. Blegnini, G. (2009). “Life cycle of buildings, demolition and recycle potential: A case study in Turin, Italy.” Journal of Building and Environment, 44, 319-330.
3. Building Research Establishment Environmental Assessment Method (BREEAM). (www.breeam.org).
4. Burritt, R., and Saka, C. (2006). “Environmental management accounting: applications and eco-efficiency. Case studies from Japan.” Journal of Cleaner Production, 14, 1262-1275.
5. Cheng, L.C. (2002). “Study of the inter-relationship between water use and energy conservation for a building.” Journal of Energy and Buildings, 34, 261-266.
6. Choi, I.Y., Cho, S.H., and Kim, J.T. (2012). “Energy consumption characteristics of high-rise apartment buildings according to building shape and mixed-use development.” Journal of Energy and Buildings, 46, 123-131.
7. Dickie, I., and Howard, N. (2000). BRE Digest 446: assessing environmental impacts of construction industry consensus BREEAM and UK eco-points. Built research establishment.
8. Dixit, M., Solis, J., Lavy, S., and Culp, C. (2010). “Identification of parameters for embodied energy measurement: A literature review.” Journal of Energy and Buildings, 42, 1238-1247.
9. Edwards, B. (2003). Green buildings pay. Spon Press.
10. Fernandez-Sanchez, G., and Rodriguez-Lopez, F. (2012). “Importance of CO2 emissions in construction phase, two case studies: New construction and renovated building.” Journal of low carbon economy, 3, 11-15.
11. Fowler, K., and Rauch, E. (2008). Assessing green building performance – a post occupancy evaluation of 12 GSA buildings. Pacific Northwest National Laboratory.
12. Glavinich, T. (2008). Constractor’s guide to green building construction – management, project delivery, documentation, and risk reduction. John Wiley and Sons, Inc.
13. Gustavsson, L., Joelsson, A., and Sathre, R. (2010). “Life cycle primary energy use and carbon emission of an eight-storey wood-framed apartment building.” Journal of Energy and Buildings, 42, 230-242.
14. Haselbach, L. (2008). The engineering guide to LEED-NC. McGraw-Hill Companies.
15. Ho, M.C. (2011). Green building promotion in Taiwan: Current Development and Future Perspectives.
http://unfccc.saveoursky.org.tw/2011cef/images/cadiis/presentation/s1t1.pdf
16. Horner, R.M.W., El-Haram, M.A., and Munns, A.K. (1997). “Building strategy: a new management approach.” Journal of Quality in Maintenance Engineering, 3, 273-280.
17. International Energy Agency (2008). Energy efficiency requirement in building codes, energy efficiency policies for new buildings.
http://www.iea.org/g8/2008/Building_Codes.pdf
18. International Energy Agency (2011). Energy efficient buildings: Heating and Cooling equipment.
http://www.iea.org/papers/2011/buildings_roadmap.pdf
19. John, V., and Zordan, S. (2001). “Research & development methodology for recycling residues as building materials – a proposal.” Journal of Waste Management, 21, 213-219.
20. Kats, G. (2003). The costs and financial benefits of green buildings – a report to California’s sustainable building task force.US Green Building Council.
21. Kats, G. (2006). Greening America’s schools – costs and benefits.US Green Building Council.
22. Kats, G. (2010). Greening our built world – costs, benefits, and strategies. Island Press.
23. Kibert, C. (2005). Sustainable construction – green building design and delivery. John Wiley and Sons Publishing.
24. Kinkade-Levario, H. (2007). Design for water: Rainwater harvesting, Stormwater catchment, and Alternate water reuse. (1st edition) New Society Publishers.
25. Kojima, M., and Bacon, R. (2009). Changes in CO2 emissions from energy use. The World Bank.
26. Krygiel, E., and Nies, B. (2008). Green BIM – successful sustainable design with building information modeling. John Wiley and Sons, Inc.
27. Kubba, S. (2010). LEED Practices, certification, and accreditation handbook.Elsevier.
28. Langdon, D. (2004). Costing green: a comprehensive cost database and budgeting methodology.http://www.usgbc.org/Docs/Resources/Cost_of_Green_Full.pdf
29. Langdon, D. (2004). The cost and benefit of achieving green buildings.
http://www.davislangdon.com/upload/StaticFiles/AUSNZ%20Publications/Info%20Data/InfoData_Green_Buildings.pdf
30. Leadership in Energy and Environmental Design (LEED) (2005). LEED reference guide for Newconstruction & Major renovations. (Version 2.2). USGBC.
31. Leadership in Energy and Environmental Design (LEED) (2009). LEED reference guide for Green Building Design and Construction. (Version 3). USGBC.
32. Li, Z. (2006). “A new life cycle impact assessment approach for buildings.” Journal of Building and Environment, 41, 1414-1422.
33. Mapp, C., Nobe, C., and Dunbar, B. (2011). “The cost of LEED – An analysis of the construction costs of LEED and non LEED banks.” Journal of sustainable real estate, 3, 255-273.
34. Matthiessen, L.F, Morris, P. (2007). The cost of green revisited: reexamining the feasibility and cost impact of sustainable design in the light of increased market adoption.McGraw Hill Published.
35. Morris, P. (2007). What does green really cost?
http://www.davislangdon.com/upload/images/publications/USA/Morris20Article.pdf
36. Moskow, K. (2008). Sustainable Facilities – Green design, Construction, and Operations. McGraw Hill Published.
37. Perez-Lombard, L., Ortiz, J., and Pout C. (2007). “A review on buildings energy consumption information.” Journal of Energy and Buildings, 40, 394-398.
38. Pulselli, R.M., Simoncini, E., and Bastianori, S. (2007). “Emergy analysis of building manufacturing, maintenance and use: Em-building indices to evaluate housing sustainability.” Journal of Energy and Buildings, 39, 620-628.
39. Ramesh, T., Prakash, R., and Shukla, K. (2010). “Life cycle energy analysis of buildings: An overview.” Journal of Energy and Buildings, 42,1592-1600.
40. Saghafi, M., and Teshnizi, Z. (2011). “Recycling value of building materials in building assessment systems.” Journal of Energy and Buildings, 43, 2181-3188.
41. Saidur, R. (2009). “Energy consumption, energy savings, and emissions analysis in Malaysian office buildings.” Journal of Energy Policy, 37, 4101-4113.
42. Sartori, I., and Hestnes, A. (2007). “Energy use in the life cycle of conventional and low-energy buildings: A review article.” Journal of Energy and Buildings, 39, 249-257.
43. Scheuer, C., Keoleian, G., Reppe, P. (2003). “Life cycle energy and environmental performance of a new university building: modeling challenges and design implications.” Journal of Energy and Buildings, 35, 1049-1064.
44. Scofield, J. H. (2009). “Do LEED-certified buildings save energy? Not really…” Journal of Energy and Buildings, 41, 1386-1390.
45. Seattle office of sustainability and environment (2003). Achieving silver LEED: Preliminary Benefit-Cost analysis for two city of Seattle Facilities. SBW consulting, Inc.
46. Suzuki, M., and Oka, T. (1998). “Estimation of life cycle energy consumption and CO2 emission of office buildings in Japan.” Journal of Energy and Buildings, 28, 33-41.
47. Syphers, G., Baum, M., Bouton, D., Sullens, W. (2003). Managing the cost of green buildings. California state and consumer services agency.
48. Tatari, O. and Kucukvar, M. (2012). “Eco-efficiency of construction materials: a data envelopment analysis.” Journal of construction engineering and management, 138(6), 733-742.
49. Taiwan Green Building Council (USGBC). www.twgbr.org.tw
50. US Green Building Council (USGBC). www.usgbc.org
51. World Business Council for Sustainable Development (WBCSD) (2011). Energy Efficiency in Buildings.
52. Treloar, G., Gupta, H., Love, P., and Nguyen, B. (2003). “An analysis of factors influencing waste minimization and use of recycled materials for the construction of residential buildings.” Management of Environmental Quality: An International Journal, 14, 134-145.
53. US Department of Energy (USDOE) (2011). 2011 Buildings Energy Data Book.
http://buildingsdatabook.eren.doe.gov/
54. United Nation Environment Programs (2009). Greenhouse gas emission baselines and reduction potentials from buildings in Mexico.
http://www.unep.org/sbci/pdfs/SBCI-Mexicoreport.pdf
55. United Nations (UN) (1992). Agenda 21. United Nations conference on environment and development in Rio de Janeiro, Brazil.
56. US Congress, Office of technology assessment (1992). Building Energy Efficiency. US Government Printing Office.
57. US Department of Energy (1998). A look at commercial buildings in 1995: characteristics, Energy consumption, and Energy expenditures. DIANE Publishing.
58. Vanegas, J. (2004). Sustainable engineering practice: an introduction. American society of civil engineers (ASCE)
59. Wilson, D., Araba, A., Chinwah, K., and Cheeseman, C. (2009). “Building recycling rates through the informal sector.” Journal of Waste Management, 29, 629-635.
60. Wong, L., and Mui, K. (2007). “Modeling water consumption and flow rates for flushing water systems in high-rise residential buildings in Hong Kong.” Journal of Building and Environment, 42, 2024-2034.
61. World business council for sustainable development (WBCSD) (2000). Measuring eco-efficiency: a guide to reporting company performance.
http://www.wbcsd.org/web/publications/measuring_eco_efficiency.pdf
62. Yudelson, J. (2008). The green building revolution. Island Press.