Modern buildings designed for certification under green building rating systems are commonly rated high based on their predicted energy performance. In many cases, their actual performance deviates from the prediction. The discrepancy can be attributed to the difference between the assumptions made in the building design and the actual operating conditions. It is important to identify robust designs that perform consistently even under varying conditions. This presentation proposes a design approach that incorporates risk assessment for multiple design aspects into an energy performance evaluation workflow. The approach will help mitigate design bias in conventional design approaches.