Mary Ann Piette

Scientific Division Director
(510) 486-6286

Mary Ann Piette is a Senior Scientist and the Director of the Building Technology and Urban Systems Division in the Energy Technologies Area at Lawrence Berkeley National Laboratory. She oversees LBNL's building energy research activities with the U.S. Department of Energy, and she is also the Director of the Demand Response Research Center. Mary Ann's work involves developing and evaluating new technology and building components, windows, controls, operations, simulation, whole building and electric load shape analysis and behavior. Her Division also conducts research in data center energy efficiency, industrial energy efficiency, and federal energy management. Mary Ann has authored over 90 peer reviewed publications related to energy efficiency and demand response and has worked at LBNL since 1983.  She is a board member of the American Council for an Energy Efficient Economy and of the OpenADR Alliance. Mary Ann has an MS in Mechanical Engineering from UC Berkeley and a Licentiate in Building Services Engineering from the Chalmers University of Technology in Sweden.



Xu, Peng, Philip Haves, Mary Ann Piette, and Leah Zagreus. Demand Shifting With Thermal Mass in Large Commercial Buildings: Field Tests, Simulations and Audits. Berkeley: Lawrence Berkeley National Laboratory, 2006. LBNL-58815.


Kiliccote, Sila, and Mary Ann Piette. "Advanced Control Technologies and Strategies Linking Demand Response and Energy Efficiency." 5th International Conference on Enhanced Building Operations. Pittsburgh, PA, 2005. LBNL-58179.
Piette, Mary Ann, David S Watson, Naoya Motegi, and Norman Bourassa. "Automated Demand Response and Commissioning." National Conference on Building Commissioning. New York City, NY, 2005. LBNL-57384.


Watson, David S, Mary Ann Piette, Osman Sezgen, and Naoya Motegi. "Machine to Machine (M2M) Technology in Demand Responsive Commercial Buildings." 2004 ACEEE Summer Study on Energy Efficiency in Buildings. Pacific Grove, CA, 2004. LBNL-55087.
Shockman, Christine, Mary Ann Piette, and Laurie ten Hope. "Market Transformation Lessons Learned from an Automated Demand Response Test in Summer and Fall of 2003." 2004 ACEEE Summer Study on Energy Efficiency in Buildings. Pacific Grove, CA, 2004. LBNL-55110.
Motegi, Naoya, Mary Ann Piette, David S Watson, and Osman Sezgen. "Measurement and Evaluation Techniques for Automated Demand Response Demonstration." 2004 ACEEE Summer Study on Energy Efficiency in Buildings. Pacific Grove, CA, 2004. LBNL-55086.