introduction 1 macroeconomic activity module 11 international energy 13 household expenditures 19 residential demand 21 commercial 29 industrial 39 transportation 53 electricity market 69 oil and gas supply 87 natural transmission distribution 99 petroleum 105 coal 117 renewable fuels 127 appendix a handling of federal selected state legislation regulation in the annual outlook 143 information administration assumptions to 2003 i contents t his report presents major national modeling system nems used generate projections 2004 aeo2004 including general features model structure concerning markets key input data parameters that are most significant formulating results detailed documentation is available series reports 2 synopsis components interrelationships modules presented an overview 3 which updated once every two years were produced