Energy conservation 272 Buildings 248 Energy consumption 49 Energy auditing 31 Sustainable buildings 22 Air conditioning 18 Dwellings 17 Architecture and energy conservation 16 Insulating materials 15 Design and construction 14 Performance 13 Computer simulation 12 Environmental engineering 12 Simulation methods 12 Environmental aspects 11 Office buildings 11 Electric equipment 10 Ventilation 10 Mathematical models 8 Universities and colleges 8 Commercial buildings 7 Electric lighting 7 Case studies 6 College buildings 6 Electric power consumption 6 Mechanical equipment 6 Architecture 5 Cost of operation 5 Decision making 5 Management 5