howmuchsun

Solar panel angles in Sri Lanka

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

CityLatitudeOptimal tiltFacingFlat roof keeps
Colombo 6.94°N 6° south 100%
Maharagama 6.85°N 6° south 100%
Jaffna 9.67°N 9° south 99%

How these angles are calculated