This question is part of the Super Big Solar Panel FAQ from Solar Mango, where expert answers to over 100 important questions on solar panels are provided.


When you buy a solar panel, you usually ask for the Wattage. What is provided to you as a specification is Peak Wattage, or in general, Peak Capacity.

What is a Peak Capacity or Peak Wattage of a solar cell?

Peak capacity of solar cells refers to the amount of power generated by the solar cells under the best possible solar radiation.


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Peak capacity of solar cells, denoted in Watt-peak (Wp), Kilowatt peak (kWp) or MW peak (MWp), refers to the maximum power the solar cells can deliver under standard conditions typically referring to conditions of good sunlight. A 1 kWp solar cell can generate power at 1 kW if the standard conditions are met.

Source: Solar Cell Peak Capacity from Solar Mango’s Solar Dictionary

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