Jim Cavallo is the managing director of Midwest Energy Performance Analytics, Inc., which provides consultation and testing on energy efficiency opportunities in residential and commercial buildings. He has been an associate editor of Home Energy Magazine and was the founding executive director of the Illinois Association of Energy Raters and Home Performance Professionals. Jim currently teaches weatherization staff and contractors in the Illinois weatherization certification program. Prior to starting his own firm in 2000, Jim was on the research staff of Argonne National Laboratory where he directed a program on energy efficiency in existing buildings. He holds a Ph.D. from New York University in economics with a focus on environmental economics and policy. Jim also volunteers building system and energy efficiency consulting services to congregations of all faiths through Faith in Place, a Chicago-based non-profit assisting congregations in their stewardship of the environment.