Solar panel angles in China
Optimal fixed-panel tilt and orientation for 12 cities in China, computed from solar geometry.
| City | Latitude | Optimal tilt | Facing | Flat roof keeps |
|---|---|---|---|---|
| Shanghai | 31.22°N | 27° | south | 91% |
| Beijing | 39.91°N | 34° | south | 86% |
| Shenzhen | 22.55°N | 20° | south | 95% |
| Guangzhou | 23.12°N | 20° | south | 95% |
| Chengdu | 30.67°N | 27° | south | 91% |
| Tianjin | 39.14°N | 33° | south | 87% |
| Wuhan | 30.58°N | 27° | south | 91% |
| Dongguan | 23.02°N | 20° | south | 95% |
| Xi’an | 34.26°N | 30° | south | 89% |
| Daxing’anling | 52.33°N | 43° | south | 78% |
| Heihe | 50.24°N | 41° | south | 80% |
| Jiagedaqi | 50.42°N | 42° | south | 79% |
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