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Photovoltaics - Power and Energy

Calculator for the conversion of the peak power of a photovoltaic system, the produced energy per year and the yield factor. The peak power has the unit Wp, watt-peak. This is the maximum power at ideal conditions. The unit for the energy per year is Wh, watt hours. The yield factor, amongst others, depends on sunshine duration and the angle to the sun.
Here can be calculated, how much energy can be expected with a system of a certain size or, from measured values, what the yield factor of an existing system is. Please choose the units and enter two values, the third will be calculated.


Peak power:
Energy per year:
Yield factor:

1 kW = 1000 W, 1 MW = 1000 kW, 1 GW = 1000 MW, W = watt, kW = kilowatt, MW = megawatt, GW = gigawatt

Example: a power system with 6 kWp, producing 5700 kWh per year, has a yield factor of 950.



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