Edgar Virguez

Edgar Virguez
Carnegie Institution for Science · Department of Global Ecology

Doctor of Philosophy
Energy systems engineer. Decarbonization of electric power systems. Higher ed DI&E advocate.

About

21
Publications
3,679
Reads
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183
Citations
Citations since 2016
17 Research Items
168 Citations
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Introduction
Edgar Virgüez is an energy systems engineer promoting a rapid and cost-efficient energy transition towards a decarbonized electric power system. His research integrates operations research and geospatial analysis methods, focusing on providing accessible, affordable, clean, and reliable electricity. His findings have appeared in top-tier peer-reviewed journals like Applied Energy, Energy Conversion and Management, and Energy Policy.
Additional affiliations
February 2022 - present
Carnegie Institution for Science
Position
  • Postdoctoral Research Scientist
Description
  • Perform idealized modeling studies (e.g., macro-energy, integrated assessment, climate, and carbon-cycle modeling) to address climate and energy challenges. Lead projects resulting into research findings disseminated in high-impact and high-quality journals and scientific conferences. Work under the supervision of Ken Caldeira, Senior Scientist (emeritus) at Carnegie Institution for Science and Senior Scientist at Breakthrough Energy.
January 2017 - December 2020
Duke University
Position
  • Instructor of the Record
Description
  • Redesigned a course to introduce two pedagogical strategies for achieving vibrant inclusiveness in classroom settings with diverse student populations: a) enabling engagement through authentic assessments and b) introducing global learning that draws on students’ cultural heritage (service-learning components). Following positive student reception after the course redesign, the university launched new course sections in three additional languages (i.e., Chinese, French, and German)
August 2016 - January 2022
Duke University
Position
  • Research Associate
Description
  • Integrate methods from operations research and geospatial analysis to identify pathways toward sustainable power systems. Conceptualize and formulate analytical tools that support the transition to a deeply-decarbonized electric power sector.
Education
August 2018 - January 2022
Duke University
Field of study
  • Environmental Sciences and Policy
August 2016 - July 2018
Duke University
Field of study
  • Environment (Energy and Environment Concentration)
June 2009 - May 2011
Los Andes University (Colombia)
Field of study
  • Enviromental Engineering

Publications

Publications (21)
Article
Full-text available
Transportation contributes about 24% of total global carbon emissions from fossil fuel combustion (IEA 2020). To decarbonize the transportation sector in support of global climate action, electric vehicles (EVs) will play a key role (Coignard et al 2018, Taljegard et al 2019, Muratori 2021, Dioha et al 2022). The total number of EVs on the world's...
Article
Hydropower facilities can be dispatched to offset wind and photovoltaic energy variability in power systems. But the abrupt water discharges needed to cope with wind and photovoltaic intermittency causes harmful riverine disruptions with significant environmental costs. In systems with hydropower cascade consisting of two or more reservoirs, the ri...
Article
This study aims to provide a detailed spatial and temporal characterization of China’s wind and solar energy resource potential. Quantifying this potential is necessary to identify pathways to achieve a deep decarbonization of its electric power system as this nation pursues carbon neutrality by 2060. This study identifies and characterizes sites s...
Chapter
Full-text available
Developed in the 1980s, Cultures and Languages Across the Curriculum (CLAC) programs provide a content-based curricular framework for developing and applying language and intercultural competence within diverse academic disciplines through the use of multilingual resources and the inclusion of multiple cultural perspectives. In this chapter, we ana...
Article
Variable renewable energy (VRE) and energy storage systems (ESS) are essential pillars of any strategy to decarbonize power systems. However, there are still questions about the effects of their interaction in systems where coal’s electricity generation share is large. Some studies have shown that in the absence of significant VRE capacity ESS can...
Article
Full-text available
Higher education institutions have long played a key role in solving society’s most pressing problems. However, as the scale and complexity of socio-environmental problems have grown, there has been a renewed debate about the role that academic institutions should play in developing solutions and how institutional structures should be redesigned to...
Chapter
This chapter explores two promising pedagogical strategies for achieving vibrant inclusiveness in classroom settings with diverse student populations: (a) enabling engagement through authentic assessments and (b) introducing global learning that draws on students’ cultural heritage. Each of the sections provide a brief description of the strategy...
Article
This study explores the performance of the Duke Energy Carolinas/Progress (DEC/DEP) electric power system under one hundred forty-one configurations combining different capacities of utility-scale photovoltaics (PV) and battery energy storage (lithium-ion batteries or BES). The different configurations include PV installations capable of providing...
Data
Supplementary Information for Virguez E, Wang X, Patiño-Echeverri D. Utility-scale photovoltaics and storage: Decarbonizing and reducing greenhouse gases abatement costs. Applied Energy. 2021;282:116120 doi:https://doi.org/10.1016/j.apenergy.2020.116120. Available at: https://www.sciencedirect.com/science/article/pii/S0306261920315385#!.
Article
Hydropower can be used to smooth out the output fluctuations from power systems including wind and solar sources. This paper proposes a double-layer model for coordinating the operations of cascaded hydropower and neighboring wind and photovoltaic (PV) facilities. In a local complementary model, hydropower with less regulating ability (local comple...
Article
The process of river runoff confluence is highly complex and combines both tendency and chaos. Research on the temporal and spatial tendencies of river runoff variability can yield significant information to understand river systems. This paper aims to identify rainfall-runoff variability tendencies using a novel variability metric: the Mei-Wang Fl...
Article
Hydropower facilities are an ideal solution to complement the intermittent production of energy from wind and solar photovoltaic facilities in electric power systems. However, adding this task to the multiple diverse duties of a reservoir (e.g., flood mitigation, water supply, and power generation) poses a challenge related to pursuing multiple and...
Article
Full-text available
As part of the inputs for of the Colombian Strategy for Low-Carbon Development (ECBDC), the Studies Group for Urban and Regional Sustainability (SUR) of Universidad de los Andes, working with a group of national experts in the transport sector, developed a model to estimate greenhouse gas (GHG) emissions generated by that sector in 2010. National e...
Article
During the evaluation of societal risk acceptance based on the Life Quality Index (LQI), the marginal life saving costs have to be assessed and compared with the Societal Willingness to Pay for a marginal increase in life safety. With this procedure, decisions on investments into different risk reduction measures are based on efficiency considerati...
Conference Paper
Full-text available
An optimal allocation of societal resources for life saving activities is guaranteed by deriving acceptance criteria for risk to life from efficiency considerations based on the marginal life saving costs principle. The Life Quality Index (LQI) can be used to quantify the societal willingness to pay for a marginal increase in life safety. The LQI n...
Conference Paper
Full-text available
Decision making with regard to activities affecting health and safety has been and still is a topic associated with controversy and apparent inconsistencies. Considering health and life safety management at supra-national scales, such as in the context of disaster prevention and relief aid allocation, as of yet no clear rationale has been establish...

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Projects

Projects (3)
Project
Understanding the collective effort that must be combined to achieve a rapid and cost-efficient energy transition, this project pursues a multidisciplinary inquiry-based method to formulate and answer critical research questions about the decarbonization of the U.S. electric power system. Integrating methods from operations research, geospatial analysis, and environmental economics, the paper published through this project would contribute to identifying pathways toward a sustainable electric power system.