For a new LEED Platinum building, a forward model was integrated in the building design process and offered the flexibility to evaluate different design options and compare overall energy efficiency to the local building energy-efficiency code. The model was calibrated using 1.5 years' of measured building performance data after occupancy in 2012. The calibrated model energy use outputs are now being used to compare with the latest two years' (2014, 2015) of measured building energy data. In this session, the comparison results are presented. The effectiveness of using calibrated model output as a benchmark for building energy savings calculation is analyzed.