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Solar panel angles in Belgium

Optimal fixed-panel tilt and orientation for 19 cities in Belgium, computed from solar geometry.

CityLatitudeOptimal tiltFacingFlat roof keeps
Brussels 50.85°N 41° south 80%
Antwerp 51.22°N 42° south 80%
Gent 51.05°N 41° south 80%
Charleroi 50.41°N 41° south 80%
Liège 50.63°N 41° south 80%
Anderlecht 50.84°N 41° south 80%
Schaerbeek 50.87°N 41° south 80%
Brugge 51.21°N 42° south 80%
Namur 50.47°N 41° south 80%
Leuven 50.88°N 41° south 80%
Molenbeek-Saint-Jean 50.85°N 41° south 80%
Mons 50.45°N 41° south 80%
Ixelles 50.83°N 42° south 80%
Uccle 50.80°N 41° south 80%
Deurne 51.22°N 42° south 80%
Hasselt 50.93°N 41° south 80%
Aalst 50.94°N 41° south 80%
Mechelen 51.03°N 41° south 80%
La Louvière 50.49°N 41° south 80%

How these angles are calculated