doe eia m057 2002 integrating module of the national energy modeling system model documentation december 2001 office integrated analysis and forecasting information administration us department washington dc 20585 this report was prepared by independent statistical analytical agency within contained herein should not be construed as advocating or reflecting any policy position other organization nems 2002ii iii contents 1 introduction scope archival citation 2 overview structure 3 regional detail 4 time horizon major assumptions 6 modular summary component modules 11 macroeconomic activity international 12 household expenditures residential commercial demand industrial transportation 13 electricity market renewable fuels oil gas supply natural transmission distribution 14 petroleum coal 15 global data 17 representation