assumptions to the annual energy outlook 2001 introduction 1 macroeconomic activity module 13 international 15 household expenditures 19 residential demand 20 commercial 28 industrial 39 transportation 47 electricity market 67 oil and gas supply 82 natural transmission distribution 92 petroleum 97 coal 108 renewable fuels 116 information administration contents t his report presents major of national modeling system nems used generate projections in aeo2001 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