While solar panels perform best under direct sunlight, they can still produce solar energy in the shade, during cloudy weather, in the rain, and while it snows. The impact of shade can be mitigated by using half-cell solar panels and MLPE (microinverters and power optimizers). They generate energy as long as photons are available—whether from blazing noon rays or filtered through clouds. While they do not produce significant electromagnetic radiation on their own—like any object exposed to the sun—they emit thermal radiation in the form of heat and reflected light. The original solar panels did this - they were essentially water pipes that absorbed heat. Solar light does not directly emit electricity, instead, it is the photovoltaic cells that convert light energy into electricity, 2.
