Location
The amount of electricity a solar panel produces depends on three main things: the amount of sunlight hitting the panel, the size of the panel, and the efficiency of the solar cells inside. different places have different solar resources, so the same set of photovoltaic (PV) panels will produce much more electricity in some locations than in others. Many factors make a difference in how much electricity a PV system can produce at any one time — including constantly changing factors such as time of day, season and weather, but also geographic traits such as climate and latitude. In general, areas closer to the equator have far greater potential for producing solar electricity than those closer to the poles, and areas with consistent sun have greater solar potential then areas that are frequently overcast.