The Advanced Research Institute (ARI) on "The Application of Systems Science to Energy Policy Planning" was held under the auspices of the NATO Special Programme Panel on Systems Science in collaboration with the National Center for Analysis of Energy Sys tems, Brookhaven National Laboratory, USA, as a part of the NATO Science Committee's continuous effort to promote the advancement of science through international cooperation. Advanced Research Institutes are sponsored by the NATO Science Committee for the purposes of bringing together senior scientists to seek consensus on an assessment of the present state of knowl edge on a specific topic and to make recommendations for future research directions. Meetings are structured to encourage inten sive group discussion. Invitees are carefully selected so that the group as a whole will contain the experience and expertise neces sary to make the conclusions valid and significant. A final report is published presenting the various viewpoints and conclusions. The NATO Systems Science Panel noted that the systems approach is increasingly being applied to energy policy analysis and plan ning in both public and private sectors of national economies. Consequently, it seemed appropriate at this time to bring together experts to review and evaluate recent experience, in order to iden tify strengths and weaknesses in current prac tice, and to make recommendations for research directions.

Inhalt
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 ModelManagement: A Focus on Computer-Assisted Analysis.- NATO Advanced Research Institute on the Application of Systems Science to Energy Planning: Organization and Participants.