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Total Solar Radiation and Annual Average Peak Sunshine Hours Across the Country
Time:2026-08-04 Clicks:
16
Solar Irradiation and Annual Average Daily Peak Sun Hours by Region in China
|
Region Class |
Areas/Provinces |
Annual Radiation (MJ/m²·Y) |
Annual Radiation (kWh/m²·Y) |
Annual Sunshine (h/Y) |
Avg.Annual Daily Peak SunHours(h) |
Avg.Daily Peak SunHours(h) |
| ClassI |
Northern Ningxia, northern Gansu, southern
Xinjiang, western Qinghai, western Tibet
|
6680-8400 | 1855-2333 | 3200-3300 | 1854-2300 | 5.08-6.3 |
| ClassIl |
Northwestern Hebei, northwestern Shanxi
southern Inner Mongolia, southern Ningxia,
central Gansu, eastern Qinghai,
southeastern Tibet
|
5852-6680 | 1625-1855 | 3000-3200 | 1624-1854 | 4.45-5.08 |
| ClassII |
Shandong,Henan, southeastern Hebei
southern Shanxi, northern Xinjiang, Jilin,
Liaoning, Yunnan, northern Shaanxi,
southeastern Gansu, southern Guangdong.
southern Fujian, northern Jiangsu, northern
Anhui, southwestern Taiwan
|
5016-5852 | 1393-1625 | 2200-3000 | 1387-1624 | 3.8-4.45 |
| ClassIV |
Hunan, Hubei, Guangxi, Jiangxi, Zhejiang
northern Fujian, northern Guangdong.
southern Shaanxi, southern Jiangsu,
southern Anhui, Heilongjiang, northeastern
Taiwan
|
4190-5016 | 1163-1393 | 1400-2200 | 1132-1387 | 3.1-3.8 |
| ClassV | Sichuan,Guizhou | 3344-4190 | 928-1163 | 1000-1400 | 913-1132 | 2.5-3.1 |
Peak Sun Hoursand Optimal Pv Tilt Anglefor Major Cities
| No. | City | Latitude(°) |
Optimal Tilt |
Avq. Peak Sun Hours(h) |
No. |
City |
Latitude(°) |
Optimal Talt |
Avq. Peak Sun Hours(h） |
| 1 | Beijing | 39.80 |
Lat+4° |
5.00 | 16 |
Hangzhou |
30.23 |
Lat+3° |
3.43 |
| 2 | Tianjin | 39.10 |
Lat+5° |
4.65 | 17 | Nanchang | 28.67 |
Lat+2° |
3.80 |
| 3 | Harbin | 45.68 |
Lat+3° |
4.39 | 18 | Fuzhou | 26.08 |
Lat+4° |
3.45 |
| 4 | Shenyang | 41.77 |
Lat+1° |
4.60 | 19 | Jinan | 36.68 |
Lat+6° |
4.44 |
| 5 | Changchun | 43.90 |
Lat+1° |
4.75 | 20 | Zhengzhou | 34.72 |
Lat+7° |
4.04 |
| 6 | Hohhot | 40.78 |
Lat+3° |
5.57 | 21 | Wuhan | 30.63 |
Lat+7° |
3.80 |
| 7 | Taiyuan | 37.78 |
Lat+5° |
4.83 | 22 | Guangzhou | 23.13 |
Lat-7° |
3.52 |
| 8 | Urumqi | 43.78 |
Lat+12° |
4.60 | 23 | Changsha | 28.20 |
Lat+6° |
3.21 |
| 9 | Xining | 36.75 |
Lat+1° |
5.45 | 24 | Hong Kong | 22.00 |
Lat-7° |
5.32 |
| 10 | Lanzhou | 36.05 |
Lat+8° |
4.40 | 25 | Haikou | 20.03 |
Lat+12° |
3.84 |
| 11 |
Xi'an |
34.30 |
Lat+14° |
3.59 | 26 | Nanning | 22.82 |
Lat+5° |
3.53 |
| 12 | Shanghai | 31.17 |
Lat+3° |
3.80 | 27 | Chenqdu | 30.67 |
Lat+2° |
2.88 |
| 13 | Nanjing | 32.00 |
Lat+5° |
3.94 | 28 | Guiyang | 26.58 |
Lat+8° |
2.86 |
| 14 | Heffei | 31.85 |
Lat+9° |
3.69 | 29 | Kunming | 25.02 |
Lat-8° |
4.25 |
| 15 | Lhasa | 29.70 |
Lat-8° |
6.70 | 30 | Vinchuan | 38.48 |
Lat+2° |
5.45 |
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