- Integrated Energy Systems Optimization
- Municipal Solid Waste Management
- Climate Change Policy and Economics
- Smart Grid Energy Management
- Recycling and Waste Management Techniques
- Energy, Environment, and Transportation Policies
- Hybrid Renewable Energy Systems
- Building Energy and Comfort Optimization
- Global Energy and Sustainability Research
- Water-Energy-Food Nexus Studies
- Wind Energy Research and Development
- Recycled Aggregate Concrete Performance
- Energy and Environment Impacts
- Electric Power System Optimization
- Social Acceptance of Renewable Energy
- Energy Load and Power Forecasting
- Environmental Impact and Sustainability
- Atmospheric and Environmental Gas Dynamics
- Electric Vehicles and Infrastructure
- Microgrid Control and Optimization
- Landfill Environmental Impact Studies
- Global Energy Security and Policy
- Wind and Air Flow Studies
- Sustainable Building Design and Assessment
- Groundwater flow and contamination studies
North Carolina State University
2014-2023
North Central State College
2014-2023
Research Triangle Park Foundation
2009
Environmental Protection Agency
2005-2009
Carnegie Mellon University
2001-2004
Princeton University
2004
University of Calgary
2004
NSF National Center for Atmospheric Research
2004
Clark University
2000
Energy policy often builds on insights gained from quantitative energy models and their underlying data. As climate change mitigation economic concerns drive a sustained transformation of the sector, transparent well-founded analyses are more important than ever. We assert that associated data must be openly available to facilitate higher quality science, greater productivity through less duplicated effort, effective science-policy boundary. There also valid reasons why code not open:...
Large-scale use of wind power can alter local and global climate by extracting kinetic energy altering turbulent transport in the atmospheric boundary layer. We report climate-model simulations that address possible climatic impacts at regional to scales using two general circulation models several parameterizations interaction turbines with find very large amounts produce nonnegligible change continental scales. Although large-scale effects are observed, has a negligible effect on...
Given its physical characteristics and the range of services that it can provide, energy storage raises unique modeling challenges. This paper summarizes capabilities operational, planning, resource-adequacy models include should have surveys gaps in extant models. Existing represent differ fidelity representing balance power system energy-storage applications. Modeling results are sensitive to these differences. The importance capturing chronology raise challenges modeling. Some 'decouple'...
This work integrates greenhouse energy demand, solar power production, and plant growth modeling to assess the economic opportunity of organic powered greenhouses. Results show these systems have positive outlook across broad climates.
The use of municipal solid waste (MSW) to generate electricity through landfill-gas-to-energy (LFGTE) and waste-to-energy (WTE) projects represents roughly 14% U.S. nonhydro renewable generation. Although various aspects LFGTE WTE have been analyzed in the literature, this paper is first present a comprehensive set life-cycle emission factors per unit generated for these energy recovery options. In addition, sensitivity analysis conducted on key inputs (e.g., efficiency plant landfill gas...
The development of sustainable solid waste management (SWM) systems requires consideration both economic and environmental impacts. Societal life-cycle costing (S-LCC) provides a quantitative framework to estimate impacts, by including "budget costs" "externality costs". Budget costs include market goods services (economic impact), whereas externality effects outside the system (e.g., impact). This study demonstrates applicability S-LCC SWM optimization through case based on an average...
New regulations and targets limiting the disposal of food waste have been recently enacted in numerous jurisdictions. This analysis evaluated selected environmental implications management policies using life-cycle assessment. Scenarios were developed to evaluate alternatives applicable discarded at facilities where is a large component (e.g., restaurants, grocery stores, processors). Options considered include anaerobic digestion (AD), aerobic composting, waste-to-energy combustion (WTE),...
Abstract Greenhouse vegetable production plays a vital role in providing year‐round fresh vegetables to global markets, achieving higher yields, and using less water than open‐field systems, but at the expense of increased energy demand. This study examines life cycle environmental economic impacts integrating semitransparent organic photovoltaics (OPVs) into greenhouse designs. We employ assessment analyze six associated with producing greenhouse‐grown tomatoes Solar PoweRed INtegrated...
Solid waste management (SWM) is a key function of local government and critical to protecting human health the environment. Development effective SWM strategies should consider comprehensive process choices policy implications on system-level cost environmental performance. This analysis evaluated select policies for Wake County, North Carolina using life-cycle approach. A county-specific data set scenarios were developed evaluate alternatives residential municipal SWM, which included...
Studies focusing on 100% renewable energy systems have emerged in recent years; however, existing studies tend to focus only the power sector using exploratory approaches. This paper therefore undertakes a whole-system approach and explores optimal pathways towards by 2050. The analysis is carried out for Ireland, which currently has highest share of variable electricity synchronous system. Large numbers scenarios are developed Irish TIMES model address uncertainties. Results show that...