Comparative Field Performance Assessment of Bifacial Solar Modules

A full-scale pilot line for producing bifacial solar modules based on silicon heterojunction technology was set up as part of the European H2020 AMPERE project. In this study, the measurements from two outdoor test benches were used to evaluate the performance of the new modules under real operating conditions. The performance was benchmarked to that of commercial modules. A new bifacial irradiance model was validated based on the data and used to correct the bifacial gain estimates for differences in rear irradiance between the strings under comparison. The new modules increased the yield by 1-4% compared to the commercial alternatives.