Some people think solar energy systems can’t generate electricity in cold, overcast, or cloudy weather, making them virtually useless if it isn’t sunny out.
While solar panels generate the most electricity on bright sunny days, they also can generate electricity on overcast days. They work more efficiently at cooler temperatures, too. Solar panels generate comparable amounts of power on cold, sunny winter days as they do on hot summer days. Even on a cold cloudy day, you can expect your solar system to generate viable electricity.