All-black solar panels are not only with black backsheets and black frames, but also black adhesives around junction boxes and other electronics. In this way, all-black solar panels have a more aesthetically pleasing look, although they may lose the benefit of reflection and light trapping, resulting in a 0.5% lower efficiency. But a 0.5% efficiency loss isn’t noticeable to the average residential homeowners, espacially when they desire for more attractive solar systems.