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The calculator is based on an arrangement with the electric company and is calculated according to 1650 annual light hours, the weighted rate is multiplied by the DC power of the system.
The exact hours are known after simulation and testing in the pv syst.

On top of a flat roof is built a dedicated and high-quality construction for solar systems that produces a correct slope towards the south at an angle of about 22 degrees to maximize the system's outputs.
When the roof is a roof, tiles adhere to the existing slope and the panels are installed on top of a roof-adjacent construction.
As a general rule, we strive to install on the southern slope (the most efficient), it is also possible to install on the western and eastern slopes
(where the efficiency is lower) and in any case we will not use the northern slope/turn where the efficiency and yields are very low.

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