introduction 1 macroeconomic activity module 13 international energy 15 household expenditures 19 residential demand 21 commercial 29 industrial 39 transportation 53 electricity market 71 oil and gas supply 86 natural transmission distribution 96 petroleum 100 coal 112 renewable fuels 120 information administration assumptions to the annual outlook 2003 i contents t his report presents major of national modeling system nems used generate projections in aeo2003 including general features model structure concerning markets key input data parameters that are most significant formulating results detailed documentation is available a series reports 2 synopsis components interrelationships modules presented an overview 3 were produced with developed maintained by office integrated analysis forecasting