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Solar panel angles in Ireland

Optimal fixed-panel tilt and orientation for 10 cities in Ireland, computed from solar geometry.

CityLatitudeOptimal tiltFacingFlat roof keeps
Dublin 53.33°N 43° south 78%
Cork 51.90°N 42° south 79%
Limerick 52.66°N 42° south 79%
Galway 53.27°N 43° south 79%
Tallaght 53.29°N 43° south 78%
Waterford 52.26°N 42° south 79%
Drogheda 53.72°N 43° south 78%
Dundalk 54.00°N 43° south 78%
Swords 53.46°N 43° south 78%
Navan 53.65°N 43° south 78%

How these angles are calculated