An area with lower solar insolation levels will require more solar panels to generate desired amount of electricity, whereas the location having higher solar insolation levels can produce the same desired amount of electricity with less solar panels (Please read "How to size the panels of your solar power system?")
The solar insolation is generally expressed in KWhr/m2/day, the amount of solar energy that falls on square meter of earth’s surface in a single day. It is also called Peak Sun Hours, for example, a location receives 6 KWhr/m2/day can be said to have received 6 hours of sun per day at 1 KWhr/m2. The solar insolation levels vary throughout the year, from lowest in winters to highest in summers. A location close to equator will have less difference in its insolation levels throughout the year whereas at higher latitudes the difference between the winter and summer insolation levels increases. Let us see the solar insolation level of 10 largest countries by area in the world:
The Solar Insolation is the amount of solar energy falling on the surface of the earth. The insolation levels help us in determining the size of the solar panels, which is required to produce desired amount of electricity.
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