Despite the apparent benefits of bifacial modules, their application still suffersfrom a lack of visibility on the performance gain that they can actually provide.In this work, we consider the specific application of vertically oriented bifacialmodules, notably for facade integration. We have developed a methodology toevaluate the annual electrical performance of bifacial modules based on threetools. First, a double illumination characterization setup is used in a solar simu-lator for comparing module architectures. Then, a reduced scale outdoor testbench allows us to evaluate bifacial module performance in a variety of con-figurations. Finally, a ray-tracing model validated with short-term outdoor dataleads to the determination of the annual performance gain. This methodologyallowed us to find optimal performance according to the most importantparameters of application and module. Specifically, a module architecture usinghalf- cut cells, a parallel cell interconnection, and textured glasses have beenanalyzed with respect to their influence on the resistive losses which increasein dual side illumination as well as to their influence on the effect of non-uniform and diffuse irradiance on the backside of the module. This work enabledus to give directions for innovative full-size module architectures.