Towards Developing a Standard for Testing Bifacial PV Modules: Single-Side versus Double-Side Illumination Method I-V Measurements Under Different Irradiance and Temperature

Industrial production of bifacial photovoltaic modules is becoming more and more cost-effective in recent years. For this reason, the development of an agreed international standard test that provides the guidelines to measure the current-voltage characteristics of bifacial modules, especially under standard test conditions, is of utmost importance [1]. In order to contribute to the international norm, the goal of this research is to compare the two main bifacial indoor testing methods under several irradiance and temperature conditions, combining a flash simulator and a steady-state simulator. Among other insights, the results successfully quantify the offset in maximum power measurements between methods.