DOE/EIA-0581(2009) The National Energy Modeling System: An Overview 2009 2FWREHU 2009 Energy Information Administration Office of Integrated Analysis and Forecasting U.S. Department of Energy Washington, DC 20585 This publication is on the WEB at: www.eia.doe.gov/oiaf/aeo/overview/ This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the U.S. Department of Energy. The information contained herein should be attributed to the Energy Information Administration and should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Preface The National Energy Modeling System: An Overview 2009 provides a summary description of the National Energy Modeling System, which was used to generate the projections of energy production, demand, imports, and prices through the year 2030 for the Annual Energy Outlook 2009, (DOE/EIA-0383(2009)), released in March 2009. AEO2009 presents national projections of energy markets for five primary casesa reference case and four addi- tional cases that assume higher and lower economic growth and higher and lower world oil prices than in the refer- ence case. The Overview presents a brief description of the methodology and scope of each of the component modules of NEMS. The model documentation reports listed in the appendix of this document provide further details. The Overview was prepared by the Energy Information Administration, Office of Integrated Analysis and Forecasting under the direction of John J. Conti (john.conti@eia.doe.gov, 202/586-2222), Director, Office of Integrated Analysis and Forecasting; Paul D. Holtberg (paul.holtberg@eia.doe.gov, 202/586-1284), Director of the Demand and Integra- tion Division; Joseph A. Beamon (jbeamon@eia.doe.gov, 202/586-2025), Director of the Coal and Electric Power Di- vision; A. Michael Schaal (michael,schaal@eia.doe.gov, 202/586-5590), Director of the Oil and Gas Division; Glen E. Sweetnam (glen.sweetnam@eia.doe.gov, 202-586-2188), Director, International, Economic, and Greenhouse Gases Division; and Andy S. Kydes (akydes@eia.doe.gov, 202/586-2222), Senior Technical Advisor. Detailed questions concerning the National Energy Modeling System and the Annual Energy Outlook 2009 may be addressed to the following analysts: AEO2009 . . . . . . . . . . . . . . . . . Paul D. Holtberg (paul.holtberg@eia.doe.gov, 202/586-1284) Integrating Module/Carbon Emissions. . . Daniel H. Skelly (daniel.skelly@eia.doe.gov, 202-586-1722) Macroeconomic Activity Module . . . . . . Kay A. Smith (kay.smith@eia.doe.gov, 202/586-1132) International Energy Module. . . . . . . . Adrian Geagla (adrian.geagla@eia.doe.gov, 202/586-2873) Residential Demand . . . . . . . . . . . . John H. Cymbalsky (john.cymbalsky@eia....