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Brady Cowiestoll

Researcher IV-Model Engineering

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Dr. Brady Stoll is a member of the Economics and Forecasting Group in the Strategic Energy Analysis Center.

She is passionate about building new analytical tools for exploring future power systems and ways to improve renewable integration in the United States and abroad. After working at NREL as an intern on the Eastern Renewable Generation Integration Study, she joined the laboratory full time as a postdoctoral researcher and is now a lead engineer for a variety of projects.

Her primary tools are the Resource Planning Model, a tool that analyzes future challenges for the electric grid—including policy impacts and falling renewable energy costs—and production cost models, which she uses to analyze the potential impacts of demand response and other flexible technologies on operations of the electric grid. Her favorite programming languages are Python for tool development and R for visualizations.

She models the transmission-level electric grid and the impacts of new technologies on the total cost of operating the grid as well as the operational changes resulting from these new technologies. She has specifically analyzed the benefits of expanded combined heat-and-power technologies, the potential for concentrating solar power, and the value of demand response and storage, ranging from manufacturing facilities to the electric grid.

Areas of Expertise

Renewable energy integration
Electricity system modeling

Research Interests

Capacity expansion modeling and optimization
Demand response modeling within the electricity sector


Ph.D., Mechanical Engineering, University of Texas at Austin, 2015
M.S., Mechanical Engineering, University of Texas at Austin, 2015
B.S., Physics, University of Texas at Austin, 2010
B.A., Plan II, University of Texas at Austin, 2010
B.A., Plan II, University of Texas at Austin, 2010

Prior Work Experience

Graduate Research Fellow, University of Texas at Austin (2011–2015)

Featured Publications

"Integrating Solar into Florida's Power System: Potential Roles for Flexibility," Solar Energy (2018)

Modeling the Impact of Flexible CHP on California’s Future Electric Grid, U.S. Department of Energy Technical Report (2018)

Capturing the Impact of Storage and Other Flexible Technologies on Electric System Planning, NREL Technical Report (2016)

Analysis of Modeling Assumptions used in Production Cost Models for Renewable Integration StudiesNREL Technical Report (2016) 

"A Fast Open-Source Code for Determining the Intensity and Angular Distribution of Radiation Transmitted through Homogenous Cloud Cover," Solar Energy (2014)

"Potential for Rooftop Photovoltaics in Tokyo to Replace Nuclear Capacity," Environmental Research Letters (2013)

View all NREL publications for Brady Stoll.