context: so If I google how efficient are solar panels and it says the average is roughly 15 to 20% with the max is can get up to is 45%. my question is how is what does that mean?
In: Technology
There is a certain amount power in terms of light energy falling on the solar panel. Number of photons per square metre per second times photon energy times area of panel. You can measure the electrical power energy output, current times voltage times time and ratio the two.
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