This document summarizes a study comparing different architectures of bifacial solar modules. Indoor characterization of standard and bifacial modules was performed on a solar simulator. Outdoor testing was also conducted on small bifacial modules installed vertically east-west. Preliminary results show that modules with an up-down cell configuration performed better than up-up under bifacial illumination conditions, and gained up to 40% more power from ambient light compared to monofacial modules. Further indoor and outdoor testing is planned to better understand bifacial module performance and the potential to predict outdoor gains using indoor characterization methods.