Friends and neighbours reinforce the uncertainty, insisting that solar panels simply stop working once the sun disappears. To separate fact from fiction, Biz Renewables spoke with three Nigerian solar professionals who collectively have decades of experience designing and installing solar systems across homes and businesses. While each explained the issue differently, they all agreed on one important point: cloudy weather does not automatically mean your solar panels have stopped working. In fact, rain often helps by washing away dust, dirt and harmattan particles that accumulate on the surface of solar panels. Clouds reduce the amount of electricity solar panels generate, but they do not automatically stop them from working.