A comprehensive analysis of the credits obtained by LEED 2009 certified green buildings

Wu, Peng; Song, Yongze; Shou, Wenchi; Chi, Hunglin; Chong, Heap‐Yih; Sutrisna, Monty

doi:10.1016/j.rser.2016.10.007

Cited by 111 publications

(98 citation statements)

References 30 publications

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“…Only buildings that were constructed in the US and that received LEED-NC 2009 platinum, gold, and silver certification were considered. Other countries and regions were not included because the underlying reasons in the achievement levels can vary based on local parameters as reported by some researchers [14][15][16].…”

Section: Methodology Of the Studymentioning

confidence: 99%

Assessment of Energy Credits in LEED-Certified Buildings Based on Certification Levels and Project Ownership

Gürgün

Arditi

2018

Buildings

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Abstract:Compared to other categories, the Energy and Atmosphere category contributes the most to the maximum obtainable points in the Leadership in Energy and Environmental Design (LEED) certification system. The objective of the study was to identify the extent to which project teams take advantage of the credits in the Energy and Atmosphere category of LEED. This study analyzes the performance of practitioners in achieving points in the Energy and Atmosphere credits of LEED-New Construction (NC) 2009 for 1500 buildings that received LEED certification in the US. For a better understanding of the credit patterns, the differences in the performance of practitioners are investigated relative to certification levels and project ownership. Achievement in credits is calculated in terms of percent of maximum points (PMP), since the maximum achievable points differ for each credit. Practitioners' achievements in the credits were ranked as follows: (1) enhanced commissioning, (2) optimized energy performance, (3) enhanced refrigerant management, (4) green power, (5) measurement and verification, and (6) on-site renewable energy. The largest achievement differences were observed in the on-site renewable energy credit. Concerning building ownership, investors were found to optimize mostly energy efficiency and on-site renewable energy, but to mostly skip enhanced refrigerant management. Performance in the measurement and verification credit was similar for all owner types, whereas investors performed differently from corporations, and government agencies in the enhanced commissioning credit. Practitioners who recognize these priorities and differences are expected to be better positioned to make sustainability-related decisions in building design and construction.

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Section: Methodology Of the Studymentioning

confidence: 99%

Assessment of Energy Credits in LEED-Certified Buildings Based on Certification Levels and Project Ownership

Gürgün

Arditi

2018

Buildings

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“…Six countries with a project number larger than 40 are identified, including the US (3694), China (172), Turkey (86), Brazil (75), Germany (46), and Chile (43). Silver and Gold are the most commonly achieved certification levels [29,30]. In order to reduce the bias brought about by the sample size, only countries with more than 30 certified projects in Silver and Gold certification levels are selected.…”

Section: Population Samples and Sampling Methodsmentioning

confidence: 99%

Regional Variations of Credits Obtained by LEED 2009 Certified Green Buildings—A Country Level Analysis

Song

Wang

et al. 2017

Sustainability

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Leadership in Energy and Environmental Design (LEED) is one of the most widely recognized green building rating systems. With more than 20% of the projects certified in non-United States (US) countries, LEED's global impact has been increasing and it is critically important for developers and regulatory authorities to understand LEED's performance at the country level to facilitate global implementation. This study therefore aims to investigate the credit achievement pattern of LEED 2009, which is one of the well-developed versions of LEED, by using 4021 certified projects in the US, China, Turkey, and Brazil. The results show that significant differences can be identified on most rating categories, including sustainable sites, water efficiency, energy and atmosphere, indoor environmental quality, and innovation in design. Using a post hoc analysis, country-specific credit allocation patterns are also identified to help developers to understand existing country-specific green building practices. In addition, it is also found that there is unbalanced achievement of regional priority credits. The study offers a useful reference and benchmark for international developers and contractors to understand the regional variations of LEED 2009 and for regulatory authorities, such as the U.S. Green Building Council, to improve the rating system, especially on designing regional priority credits.

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“…exaggeration of both the strength of the evidence for a true difference between treatments and of the precision with which any difference that does exist has been estimated" [2]. Recently, when Wu et al [8] and Wu et al [9] analyzed the LEED project data, they utilized pooling procedures that achieved extremely low P values. An evaluation of LEED project data and different sampling structures (without and with pooling) is discussed below.…”

Section: Terminology Referencementioning

confidence: 99%

Sacrificial Pseudoreplication in LEED Cross-Certification Strategy Assessment: Sampling Structures

Pushkar

2018

Sustainability

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Abstract:The study aims to suggest sampling structures to avoid sacrificial pseudoreplication in the evaluation of Leadership in Energy and Environmental Design (LEED)-certified projects. The sampling includes two structures that exclude sacrificial pseudoreplication and one structure that leads to sacrificial pseudoreplication: (i) The state is the sampling frame in which LEED projects are treated as primary sampling units; (ii) The US is the sampling frame, the state is the primary sampling unit in which LEED projects are treated as evaluation units; and (iii) The US is the sampling frame in which LEED projects are pooled from different states and treated as primary sampling units. The three sampling structures are applied to the evaluation of the Silver-to-Gold cross-certification performances of LEEDv3 for new construction and LEEDv3 for existing buildings. The same cross-certification strategy was revealed if either structure (i) or structure (ii) was applied, while it was poorly estimated and misinterpreted if structure (iii) was applied, i.e., sacrificial pseudoreplication had occurred.

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A comprehensive analysis of the credits obtained by LEED 2009 certified green buildings

Cited by 111 publications

References 30 publications

Assessment of Energy Credits in LEED-Certified Buildings Based on Certification Levels and Project Ownership

Assessment of Energy Credits in LEED-Certified Buildings Based on Certification Levels and Project Ownership

Regional Variations of Credits Obtained by LEED 2009 Certified Green Buildings—A Country Level Analysis

Sacrificial Pseudoreplication in LEED Cross-Certification Strategy Assessment: Sampling Structures

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