Overview of Evaluation Methods for R&D Programs: A Directory of Evaluation Methods Relevant to Technology Development Programs, prepared for U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy, March 2007, by Rosalie Ruegg, TIA Consulting Inc., and Gretchen Jordan, Sandia National Laboratories. This booklet introduces managers to a variety of methods for evaluating research and development (R&D) programs.