This paper surveys the important global and international energy models and provides summary information on the major research groups and organizations presently involved in energy modeling. In the first section an introduction is provided to the art and science of modeling and to the important concepts and methodologies used in formulating and implementing models. The second section surveys global models that include an explicit treatment of energy, and the next surveys international energy models. The fourth section summarizes the important research groups and organizations presently involved in the development and application of energy models, and the last section presents a survey and concluding remarks. The authors hope that this survey will facilitate communication between model developers and users, and will be useful both in stimulating research to improve models, and in stimulating the use of models for systematic analysis of the important energy issues facing the world. 36 references.