Overview -- Methodological Issues -- Operational Issues -- Conclusions and Recommendations -- Keynote Address: One Statistician's Observations Concerning Energy Modeling -- Use of Models in Decision Making -- Use of Models in Decision Making -- Use of Models in Decision Making -- Working Group 1: Energy Model and Data Support and Operation -- Working Group 2: Methods for Model Evaluation -- Working Group 3: Technical Structure of Energy Models -- Working Group 4: The Communication Problem in Energy Policy Analysis -- Resource Modeling: Problems in the State of the Art -- Energy Models and Technology Assessment -- The Development of Electricity in the Future French Energy Balance: An Example of Readjustment -- Comments on the Papers Presented in the Session on Supply Modeling -- Modeling Energy Demand in the Short Term and the Midterm: The EIA Experience -- Modeling Production and Pricing within an Interindustry Framework -- Use of Energy Models for Business Decisions -- Energy Demand Analysis and Modeling -- Discussion of the Session on Demand Modeling -- Survey of Present Energy Models with Particular Reference to the European Community -- Model Comparison for Energy Policy and Planning -- An integrated Energy Modeling Approach: Experience at IIASA -- Capital, Energy, and Labor Cross-Substitution Elasticities in a Developing Country: The Case of Greek Manufacturing -- Discussion of Papers Presented in Comprehensive/Integrated Modeling Systems Session -- A Progress Report on the Development of Generalized Equilibrium Modeling -- The Strategic Petroleum Reserve: How Large Should It Be? -- An Examination of Econometric Energy Modeling and Comparision with Alternative Methodologies -- Multiobjective Energy Analysis -- Validation and Assessment Issues of Energy Models -- Implementation Aspects of Model Management: A Focus on Computer-Assisted Analysis -- NATO Advanced Research Institute on the Application of Systems Science to Energy Planning: Organization and Participants.