What happens with my solar system at night, in cloudy weather or during rain?
Although solar panels still produce electricity in cloudy or hazy conditions, the clearer the sky, the better the energy production will be. Temperatures over 25 Degrees Celsius can also reduce the output of a solar system, especially with cheaper panels. Higher quality and more costly panels, like LG panels, will perform better in hot weather.
As a rule of thumb, a solar system will produce around 25% to 45% of the energy it would produce under ideal conditions on a cloudy day and the system will still produce a reduced amount of electricity during rain, but you could be down to a little as 20% of ideal day performance. During the night the system automatically switches off.