Dr. Williams' research interests include industrial ecology, life-cycle assessment, information technology, and energy systems. His best-known work addresses the environmental assessment and management of IT hardware. Dr. Williams also investigates energy topics such as long-term, second-law efficiency trends and the effects of development and urbanization on energy demand in industrializing nations. He has worked in the areas of hybrid life-cycle assessment (which combines process and economic input-output techniques), uncertainty analysis in industrial ecology, and sector-level forecasting of technological change and growth.
Ph.D., State University of New York, 1993
B.A., Macalester College, 1988
Frijia, S., S. Guhathakurta and P. L. Williams. 2012. Functional unit, technological dynamics and scaling properties for the life cycle energy of residences. Environmental Science and Technology 46(3):1782-1788.
Frijia, S., E. Williams, S. Guthathakurta and A. Middel. 2011. Scaling behavior of the life cycle energy of residential buildings and impacts on greenhouse gas emissions. Tempe, AZ. Poster presented at the 12-13 January 2011 CAP LTER 13th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University. (link)
Frijia, S., S. Guhathakurta, P. L. Williams and A. Middel. 2011. Re-examining the life cycle energy of residences: Functional unit, technological dynamics and scaling. Poster presented on May 4, 2011 at the Community of Undergraduate/Graduate Research Scholars (COURS) Poster Session, Arizona State University, Tempe, AZ. (link)
Frijia, S., S. Guhathakurta, P. L. Williams and A. Middel. 2011. Re-examining the life cycle energy of residences; functional unit, technological dynamics and scaling. Poster presented February 20, 2011 at the Decision Making Under Uncertainty (DMUU) Session of the AAAS Annual Meeting, Washington, DC. (link)