Abstract : The decrease in efficiency of photovoltaic (PV) modules is caused by an increase in the temperature at which they are working. In this research, an aluminum metal foam (AMF) with phase change material (PCM) is used for passive cooling to control the temperature of a photovoltaic (PV) system. Two modules, the standard PV and the PV with AMF incorporated in PCM (abbreviated as PV/PCM/AMF), are tested in the open air. Over the course of the winter, measurements were taken of the PV panels' surface temperatures, PCM temperatures, open-circuit voltages, and total power outputs. Based on the data, the PV-PCM/AFM system had a surface temperature that was 4.4%, 7%, and 17% reduced than traditional PV in the months of December, January, and February. Additionally, the power output of the PV-PCM/AFM system was 1.86 percentage points higher, 3.41 percentage points higher, and 4.19 percentage points higher than conventional PV in those same months.