Efficiency of solar panels :
The efficiency of solar panels is the ability of solar panel to convert light into electricity. Solar panels are made to love the son. So in lighter mode, efficiency is how much solar panel love the sun.
Solar panel available in different type each one has their own output and that can be changed according to conditions like atmosphere, temperature, irradiance, and environment, etc
For example, a panel has an efficiency of 30% it means that 30 percent of all the light that hits to solar panel converted into electricity.
The basic measure of solar panel output is by testing or practical performances of a solar panel under average conditions or standard conditions.
Conditions include to determine solar panel efficiency are panel orientation, panel temperature, and light exposure. For example, a normal solar panel or 250 watts produced 250 watts of energy or electricity when the solar panel gets 1000 watts per square meter.
A semitransparent solar panel has an average power conversion efficiency almost 13% and but an opaque solar panel has an average efficiency of 25%.
These can be changed according to different conditions like area, solar intensity, and atmosphere.
For calculation of solar panel efficiency, we need to just multiply the amount of solar light that hits the ground in the practical area which is known as radiation flux, by the area of solar panel plate.
Divide the maximum wattage of the panel by this number. Then at end multiply it with 100 for getting a percentage of efficiency.
Solar panel efficiency formula:
Formula: (solar cell efficiency)
ηmax = (Pmax / E*Ac) * 100
Pmax = Maximum power output (in watt)
E = Incident radiation flux (W/m2)
Ac = Area of collector (m2)
Example: for instance, the sunlight falling on a given area is 1000 watts per square meter and our solar panel has an area of 1 square meter. The total energy ends up with 1000 watts. If the panel producing 250 watts of electricity so it simply means that the efficiency of the panel is 25 percent.
250 divided by 1000 is 0.25 and then 0.25 multiply with 100 is 25%.
The efficiency of Opaque solar panel of 1 square meter is calculated by doing practical performances.