In the Nordic countries, the snow in the solar panels affects considerably the solar energy production and the detection of its effects can be an issue due to the outdoor climate conditions. Our research aims to develop intelligent control systems for photovoltaic systems that adapts after variable environmental conditions. One of these conditions is the presence of snow or other form of pollution. In this paper, we focus to investigate whether it is possible to detect snow on a solar panel (off-grid) without using additional external sensors as well to investigate how snow affects the efficiency, current and power on a grid-connected solar panel. For this purpose, a set of experiments were proposed and carried out in a PV solar park. © 2021 IEEE.