When the modules are installed in rows facing south, there needs to be a distance between these rows to prevent the modules causing shadow on each other. In a symmetrical system this is not the case, so more modules can be installed within the same area. In a symmetrical system the yield per module is a little less, but the total yield from the area is higher.

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Autarco offers different mounting solutions for pitched roofs, depending on the roofing material. The yield of a PV system depends on the pitch and the azimuth of the modules, where the ideal situation is a south facing roof with a pitch of 25-35°.

Flat roof systems are provided with ballast tiles to make sure the modules will stay in place. You should check the load bearing capacity of your roof to make sure it will hold the system, which can be anything between 15 and 25 kg/m². It is advisable to contact your roofing installer as well, to confirm the roofing material is suitable.

Obstacles on the roof and next to the building may cause shadows on the modules for certain parts of the day. This has a negative affect the yield of the total system, so this has to be taken into account on designing a PV system.

Up to a gradient of 3° this will cause no problem. For steeper gradients, special precautions may be necessary. Your dealer can inform you on this.