Overview
Personal Profile
Paul is the principal engineer for the Commercial Buildings Research Group and has been at NLR since 1994. Prior to this role, he was the group manager for the Commercial Buildings Research Group. He also spent three years as a technical advisor to the U.S. Department of Energy in Washington, D.C. Paul was instrumental in creating the process to achieve the Zero Energy Building status for NLR's Research Support Facility.
Paul has authored or co-authored more than 50 papers and articles related to energy efficiency and zero-energy commercial buildings. Among his many awards, Paul has received two ASHRAE Technology Awards for his energy-efficient buildings work and two Energy User News magazine's Efficient Building Awards. Paul has been key in the development of the Advanced Energy Design Guide series from ASHRAE and has chaired two of the guides for K-12 schools and grocery stores.
He has also been an adjunct faculty member at Colorado School of Mines and the University of Denver. He is a registered professional engineer.
Education/Academic Qualification
PhD, Mechanical Engineering, Purdue University
Master, Mechanical Engineering, Purdue University
Bachelor, Mechanical Engineering, Worcester Polytechnic Institute
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Collaborations and Top Research Areas From the Past 5 Years
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A Guide for Creating a Building-Level Action Plan to Manage Refrigerants in Buildings
Goetsch, H. & Torcellini, P., 2026, 19 p.Research output: NLR › Technical Report
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Evaluating Energy Savings Measures for Building Retrofits in an Interactive Workshop Environment
Torcellini, P. & Young, M., 2026, 39 p.Research output: NLR › Technical Report
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Decarbonizing Building Thermal Systems: A How-to Guide for Heat Pump Systems and Beyond
Houssainy, S., Taylor, L., Torcellini, P. & Ramaraj, S., 2024, 114 p.Research output: Book/Report › Book
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Is a Generator the Only Solution When the Grid Fails? Optimizing Systems for Resiliency and Carbon Reduction: Preprint
Marzullo, T., Goetsch, H. & Torcellini, P., 2024. 17 p.Research output: Contribution to conference › Paper
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Making It Happen: On-Site Renewable Energy and Storage Challenges and Solutions for Commercial Buildings: Preprint
Goetsch, H., Torcellini, P., Taylor, L. & Colon, B., 2024. 13 p.Research output: Contribution to conference › Paper