Solar panel angles in Japan
Optimal fixed-panel tilt and orientation for 9 cities in Japan, computed from solar geometry.
| City | Latitude | Optimal tilt | Facing | Flat roof keeps |
|---|---|---|---|---|
| Tokyo | 35.69°N | 31° | south | 88% |
| Yokohama | 35.43°N | 31° | south | 89% |
| Osaka | 34.69°N | 30° | south | 89% |
| Nagoya | 35.18°N | 30° | south | 89% |
| Sapporo | 43.07°N | 36° | south | 84% |
| Fukuoka | 33.60°N | 29° | south | 90% |
| Kawasaki | 35.52°N | 31° | south | 89% |
| Kobe | 34.69°N | 30° | south | 89% |
| Kyoto | 35.02°N | 30° | south | 89% |
The same sunlight, a different question. Vitamin D winters in Japan →