Solar panel angles in France
Optimal fixed-panel tilt and orientation for 5 cities in France, computed from solar geometry.
| City | Latitude | Optimal tilt | Facing | Flat roof keeps |
|---|---|---|---|---|
| Paris | 48.85°N | 40° | south | 81% |
| Lille | 50.63°N | 41° | south | 80% |
| Roubaix | 50.69°N | 41° | south | 80% |
| Tourcoing | 50.72°N | 41° | south | 80% |
| Dunkirk | 51.03°N | 41° | south | 80% |
The same sunlight, a different question. Vitamin D winters in France →