“…There is a need for design stage calculation methodologies to address all aspects of building energy consumption for whole building simulation, including regulated, and unregulated uses and predictions of actual operation (Norford et al, 1994;Diamond et al, 2006;Torcellini et al, 2006;Turner and Frankel, 2008). However, a fragmented construction industry (Cox and Townsend, 1997;Construction Task Force, 1998;House of Commons, 2008), has led the design community to rarely go back to see how buildings perform after they have been constructed (Torcellini et al, 2006), resulting in a lack of practical understanding of how modeling assumptions relate to operational building energy use. Post-occupancy evaluation of existing buildings is essential in understanding where and how energy is being used, how occupants behave, and the effectiveness of system strategies.…”