It probably depends on where you live, but from a quick web search i see sources saying most energy is used in the summer. ( https://learn.pjm.com/three-priorities/keeping-the-lights-on/how-energy-use-varies.aspx ). In locations that receive less sunlight you would simply need more solar panels to meet your needs. In those rare areas that truly receive very little sunlight for months you would choose other technologies like wind, especially since those dark areas likely correlate with where wind is stronger and steadier.

But my comment was in reply to the person who claimed that solar wont work when it's cloudy, which is false. Solar works great even when it's cloudy.