Carmen Difiglio
Deputy Assistant Secretary for Policy Analysis
Office of Policy and International Affairs

Dr. Carmen Difiglio is the Deputy Assistant Secretary for Policy Analysis in the U.S. Department of Energy (DOE) and is responsible for DOE’s analyses of energy policies.  Before taking this position he was on leave to serve as Head of the Energy Technology Policy Division at the International Energy Agency (IEA). Before joining DOE, Difiglio worked as an economist for the Delaware Valley Regional Planning Commission, the Transportation Studies Center of the University of Pennsylvania, and the Federal Reserve Bank of Chicago.

At DOE Difiglio played a significant role in developing the Clean Air Act Amendments of 1990, the Energy Policy Acts of 1992 and 2005, and the Energy Independence and Security Act of 2007. He also directed the U.S. Alternative Fuels Council and has supervised the development of a National Energy Strategy.

While at the IEA Difiglio developed a new world energy model (Energy Technology Perspectives) and contributed to IEA’s World Energy Outlooks. 

Urban transportation demand models were the focus of Carmen Difiglio's early work. Later he developed one of the earliest "bottom-up" engineering-economic models of the transport sector. These bottom-up models have since become commonplace in energy policy analysis.

Difiglio has chaired various energy committees including the Transportation Research Board’s Committee on Energy and Transportation and the IEA Energy Efficiency Working Party. He currently serves as Vice-Chair of IEA’s Committee on Energy Research and Technology and is a member of the Permanent Monitoring Panel on Energy of the World Federation of Scientists. Difiglio is the author of many papers on energy economics, travel forecasting, fuel economy policies and other topics. His doctorate is from the University of Pennsylvania.