doe eia m067 2001 model documentation report residential sector demand module of the national energy modeling system december 2000 office integrated analysis and forecasting information administration us department washington dc this was prepared by independent statistical agency within contained herein should not be construed as advocating or reflecting any policy position other organization update is seventh edition nems it reflects changes made to over past year for annual outlook include following specific technology data cost performance availability were updated reflect current market status parameters added allow learning in emerging technologies housing size newly constructed homes change forecast period continuing trend larger income elasticities some end use services a new sub created simultaneous choice heating cooling equipment building shell characteristics