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Lab/Center: Energy & Sustainability in Construction (ESC) Lab

Dynamic Life Cycle Assessment: A Review of Research for Temporal Variations in Life Cycle Assessment Studies

Su, Shu; Li, Xiaodong; Zhu, Chen; Lu, Yujie; Lee, Hyun Woo. (2021). Dynamic Life Cycle Assessment: A Review of Research for Temporal Variations in Life Cycle Assessment Studies. Environmental Engineering Science, 38(11), 1013 – 1026.

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Abstract

Life cycle assessment (LCA) is a comprehensive and important environmental management tool around the world. However, lacking temporal information has been a major challenge. In the past decade, dynamic LCA (DLCA), which incorporates temporal variations into assessment, has been an emerging research topic with increasing publications. A timely comprehensive review is needed to present current progress and discuss future directions. This article reviews 144 DLCA articles quantitatively and qualitatively. A bibliometric approach is adopted to conduct co-occurrence analysis and cluster analysis of DLCA studies. The research progress, approaches, and limitations of three temporal variation types (i.e., dynamic life cycle inventory, dynamic characterization factors, and dynamic weighting factors) in DLCA studies are systematically analyzed and discussed. It is concluded that: (1) dynamic inventory analysis is usually conducted by collecting time-differentiated data at each time step. Field monitoring, simulation, scenario analysis, and prediction based on historical data are common approaches. (2) Dynamic characterization studies primarily focus on two impact categories: global warming and toxicity. More studies are in need. (3) Various methods and indicators (i.e., dynamic pollution damage cost, temporal environmental policy targets, and discount rates) are used to solve the dynamic weighting issue, and they have specific limitations. Finally, three interesting topics are discussed: comparison between dynamic and static results, the large data amount issue, and the trend of tools development. This review offers a holistic view on temporal variations in DLCA studies and provides reference and directions for future dynamic studies.

Keywords

Literature Reviews; Cluster Analysis (statistics); Global Warming; Environmental Management; Discount Prices; Emission Inventories; Dynamic Characterization; Dynamic Inventory Analysis; Dynamic Weighting; Environmental Impact; Life Cycle Assessment; Temporal Variation; Cluster Analysis; Life Cycle; 'current; Dynamic Inventory Analyse; Dynamic Lca; Environmental Management Tool; Inventory Analysis; Research Topics; Temporal Information; Dependent Climate Impact; Greenhouse-gas Emission; Biogenic Carbon; Assessment Framework; Fresh-water; Electricity-generation; Energy Efficiency; Wheat Production; Embodied Energy; Time

Hyun Woo “Chris” Lee and Laura Osburn publish design guide for worker safety

Previous studies on construction hazard prevention have shown that almost 50% of construction fatalities and accidents can be linked to decisions made during the design process. To address the influence of upstream design decisions on worker safety, researchers have developed the Prevention through Design (PtD) concept to proactively eliminate safety hazards in the workplace. In response, CBE researchers, Hyun Woo “Chris” Lee, PD Koon Endowed Associate Professor in Construction Management and Dr. Laura Osburn, Senior Research Scientist in Construction Management,…

Energy & Sustainability in Construction (ESC) Lab

The Energy and Sustainability in Construction (ESC) Lab promotes energy efficiency and sustainability (EES) in the built environment through the development of sustainable design, innovative project delivery practices, and risk-based financial models for EES investments. Our work focuses on integrating advanced financial analysis, project development, and management strategies to enhance the delivery of energy-efficient buildings and sustainable infrastructure.
Through innovative solutions, the ESC Lab addresses complex challenges in current project development practices that slow the transition toward a more sustainable society. Our research spans a wide range of critical areas, including commercial energy retrofits, community solar projects, green datacenters, healthy commercial buildings, and electric vehicle (EV) charging infrastructure. By tackling these pressing issues, the ESC Lab is at the forefront of driving transformative changes in the built environment.

Financial and Management Questions that Lead to Sustainable Solutions

The ESC Lab targets to help project stakeholders evaluate the risks and rewards of energy efficiency and sustainability (EES) investments by addressing some of the industry’s most pressing financial and management challenges, including:

  • What policies, financing mechanisms, and project delivery systems best support the advancement of EES?
  • How can we categorize and accurately model the unique risks associated with EES investments?
  • What analytical modeling methods can be applied to ensure the effective implementation of EES measures in projects?
  • How can we optimize investment strategies to balance environmental benefits with financial returns?
  • What best practices can enhance stakeholder engagement and collaboration to drive successful EES project outcomes?

Pursuing Innovative Solutions to Energy Efficiency and Sustainability

The ESC Lab has developed a series of analytical models and evaluation practices that facilitate the effective delivery of energy-efficient commercial buildings and sustainable infrastructure, including:

  • Cost and power demand model for electric vehicle (EV) charging infrastructure
  • Conceptual cost and carbon estimating model for mass timber structure
  • Energy-Related Risk Management in Integrated Project Delivery
  • Phased Investment for Energy Retrofit (PIER)
  • Energy Retrofit Loan Analysis Model (ERLAM)
  • An optimized portfolio analysis for community-based photovoltaic investment

ESC Research Funders and Selected Projects:

  • UW Clean Energy Institute: “Equitable Public Electric Vehicle Charging Infrastructure Expansion—From the Tribal Community Perspective”
  • King County Metro–Sound Transit–Seattle City Light: “Electrified Mobility Hubs: A Blueprint for the Future of Transit Infrastructure”
  • UW Global Innovation Fund: “Mitigating Effects of Future Pandemics with the Use of Risk-Responsive Building Codes: A Developing Country Framework”
  • King County Metro: “Evaluation of a Public/Private Partnership (P3) Model for Bus Base Electrification”
  • UW CBE INSPIRE Fund: “Investigating the Health Requirements and Risk-Responsiveness Criteria in Office Building Codes for Mitigating COVID-19 and Future Airborne Diseases”
  • UW CBE INSPIRE Fund: “Investigating Energy Justice in Washington State in Terms of Photovoltaic (PV) Systems and Electric Vehicle (EV) Chargers”
  • Google: “A Proposal to Grow a Greener Data Center with Google”
  • UW Population Health: “Economic Impact of Office Workplace Transformation due to COVID-19: How Can Buildings and Surrounding Areas Recover?”
  • UW Transportation: “UW Transportation Electrification and Solar Study”
  • RERI–LBNL–DOE: “Effect of Energy Benchmarking and Disclosure on Office Building Marketability”
  • Pankow–Skanska–Oregon DEQ: “Life Cycle Assessment (LCA) for Low Carbon Construction Commercial Office Building MEP & Interiors Data”
  • BE Innovation: “Impact of Energy Benchmarking and Disclosure on the Performance of Office Buildings”

Selected Journal Publications:

  • Min, Y. and Lee, H.W. (2024). “Adoption Inequalities and Causal Relationship between Residential Electric Vehicle Chargers and Heat Pumps.” ASCE Journal of Construction Engineering and Management, 04024025.
  • Min, Y. and Lee, H.W. (2024). “Quantifying Clean Energy Justice: Impact of Solarize Programs on Rooftop Solar Disparities in the Pacific Northwest.” Sustainable Cities and Society, 105287.
  • Shang, L., Dermisi, S., Choe, Y., Lee, H.W., and Min, Y. (2023). “Assessing the Office Building Marketability Before and After the Implementation of Energy Benchmarking and Disclosure Policies – Lessons Learned from Major US Cities.” Sustainability, 15(11), 8883.
  • Min, Y. and Lee, H.W. (2023). “Characterization of Vulnerable Communities in Terms of the Benefits and Burdens of the Energy Transition in Pacific Northwest Cities.” Journal of Cleaner Production, 135949.
  • Min, Y., Lee, H.W., and Hurvitz, P.M.  (2023). “Clean Energy Justice: Different Adoption Characteristics of Underserved Communities in Rooftop Solar and Electric Vehicle Chargers in Seattle.” Energy Research and Social Science, 96(1), 102931.
  • Su, S., Li, X., Zhu, C., Lu, Y., and Lee, H.W. (2021). “Dynamic Life Cycle Assessment: A Review of Research for Temporal Variations in Life Cycle Assessment Studies.” Environmental Engineering Science, 38(11).
  • Droguett, B. X. R., Huang, M., Lee, H.W., Simonen, K., and Ditto, J. (2020). “Mechanical, Electrical, Plumbing and Tenant Improvements Over the Building Lifetime: Estimating Material Quantities and Embodied Carbon for Climate Change Mitigation.” Energy and Buildings, 226, 110324.
  • Ho, C., Lee, H.W., and Gambatese, J. (2020). “Application of Prevention through Design (PtD) to Improve the Safety of Solar Installations on Small Buildings.” Safety Science, 125, 104633.
  • Gomez Cunya, L.A., Fardhosseini, M.S., Lee, H.W., and Choi, K. (2020). “Analyzing Investments in Flood Protection Structures: A Real Options Approach.” International Journal of Disaster Risk Reduction, 43(2), 101377.
  • Shang, L., Lee H.W., Dermisi, S., and Choe, Y., (2020). “Impact of Energy Benchmarking and Disclosure Policy on Office Buildings.” Journal of Cleaner Production, 250, 119500.
  • Shakouri, M., Lee, H.W., and Kim, Y.-W. (2017). “A Probabilistic Portfolio-based Model for Financial Valuation of Community Solar.” Applied Energy, 191(1), 709-726.
  • Shakouri, M. and Lee, H.W. (2016). “Mean-Variance Portfolio Analysis Data for Optimizing Community-based Photovoltaic Investment.” Data in Brief, 6(1), 840-842.\

Current and Former Lab Members:

  • Abdul-Razak Alidu
  • Byungju Jeon
  • Chitika Vasudeva
  • Yohan Min
  • Matt Wiggins
  • Novi T.I. Bramono
  • Yong-Hyuk Oh
  • Chuou Zhang
  • Jonghyeob Kim
  • Wenqi Zhu
  • Julie Knorr
  • Zhila Mohammady

 

Hyun Woo “Chris” Lee

Hyun Woo “Chris” Lee is the P.D. Koon Endowed Professor in the Department of Construction Management (CM) and leads the Energy and Sustainability in Construction (ESC) Lab. Prior to joining the CM Department in January 2016, he spent 3.5 years as an Assistant Professor at Oregon State University, and 7 years in the U.S. and Korean construction industries as field engineer, project engineer, and estimator. He received his B.S. in Architectural Engineering from Seoul National University in 1999, and his M.S. and PhD in Civil and Environmental Engineering from the University of California, Berkeley in 2004 and 2012, respectively.

Prof. Lee’s research addresses how decisions about buildings and infrastructure are made under uncertainty, and how those decisions can be made more sustainable, safer, and more equitable. Through the ESC Lab, he develops financial models, risk assessment frameworks, and planning tools across three themes: advancing sustainable built environments through building and transportation electrification, enhancing construction health and safety, and leveraging data-driven innovations for construction excellence. His current work centers on electrification—EV charging infrastructure planning, electrified mobility hubs, ferry terminal and transit fleet electrification, and public-private partnership (P3) models for financing the transition—alongside a parallel line of research on clean energy justice that documents disparities in access to rooftop solar, heat pumps, and EV chargers in underserved communities. This research is conducted in close partnership with public agencies including the Washington State Department of Transportation, the Port of Seattle, King County Metro, Sound Transit, and Seattle City Light, and is grounded in community-centered planning and interagency coordination.

Prof. Lee has led or collaborated on over 30 funded research projects totaling more than $2.5 million, supported by the U.S. Department of Energy, the Washington State Department of Transportation, the Washington State Department of Labor & Industries, NIOSH through CPWR, and industry partners including Google and Skanska. He has produced over 100 publications, including more than 40 peer-reviewed journal articles in journals such as Applied Energy, Automation in Construction, Journal of Cleaner Production, Journal of Construction Engineering and Management, and Journal of Management in Engineering, and his work has been featured in ASCE Civil Engineering, Metropolis, Fast Company, and Safety+Health. He serves as Assistant Specialty Editor for the Journal of Construction Engineering and Management and on the Advisory Board of the Lean Construction Journal.