howmuchsun

Solar panel angles in Bulgaria

Optimal fixed-panel tilt and orientation for 3 cities in Bulgaria, computed from solar geometry.

CityLatitudeOptimal tiltFacingFlat roof keeps
Sofia 42.70°N 37° south 83%
Plovdiv 42.15°N 36° south 84%
Varna 43.22°N 36° south 84%

How these angles are calculated