I want to get areas for PV-Powerplants via QGIS.

I used the solution under Filter for south pointing areas from a DEM for extraction of the areas which are not facing north (60-300°).

But I need further information about the areas. Since an area can be minimal inclined lets say 0,1 ° to the north these areas will not be included, in reality they would be basically flat and therefore suitable for PV-parks.

How do I get the flat areas (no slope) and the minmal inclined areas up to 1° out of the DEM ?


1 Answer 1


The procedure is the same as in the answer you reference above, you just need to calculate the "slope" raster out of the DEM and reclassify values <= 1° to 1 and all others to 0.

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