Energy Efficiency Calculator

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Rotate the solar disk to calculate the energy performance of the photovoltaic system, according to its orientation (eg. south) and the slope of the roof (eg. 30o degrees). Red symbolizes the maximum energy efficiency (near 100%), and blue the minimum energy efficiency (near 30%).

Energy Efficiency Calculator

Calculating Degree of Roof

Am
Bm
Cm
D15m
Degree of Roof is:49°