Alan’s own research focuses on analyzing environmental and energy issues, in particular, the benefits, costs and design of pollution and energy policies, both in the United States and in developing countries. He was lead author for the Toward a New National Energy Policy: Assessing the Options study, examining the costs and cost-effectiveness of a range of federal energy policy choices in both the transportation and electricity sectors. His primary research methodology is in the development and analysis of stated preference surveys, but he has also undertaken research on natural gas supply and impact on energy prices and policies; the costs and benefits of converting the U.S. heavy-duty truck fleet to run on liquefied natural gas; and the costs and benefits of expanded regulation around deepwater oil drilling.
 
Alan has been a consultant to state governments, federal agencies, private corporations, the Canadian government, the European Union, the World Health Organization, and the World Bank. He co-chaired an advisory committee that counseled the U.S. Environmental Protection Agency on new ozone and particulate standards. Krupnick also served as senior economist on the President's Council of Economic Advisers, advising the Clinton administration on environmental and natural resource policy issues. He is a regular member of expert committees from the National Academy of Sciences and the U.S. EPA. He received his Ph.D. in Economics from the University of Maryland.