Solar energy in Qionghai, China
Average irradiation 4.25 kWh/m²/day · ~1241 kWh per kWp per year
Monthly solar irradiation & temperature in Qionghai (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.72 | 20.2 | 66 |
| Feb | 3.40 | 21.1 | 83 |
| Mar | 4.05 | 23.2 | 98 |
| Apr | 4.86 | 25.7 | 118 |
| May | 5.55 | 27.8 | 135 |
| Jun | 5.53 | 28.4 | 135 |
| Jul | 5.59 | 28.3 | 136 |
| Aug | 5.14 | 28.3 | 125 |
| Sep | 4.56 | 27.9 | 111 |
| Oct | 3.89 | 26.1 | 95 |
| Nov | 3.13 | 24.1 | 76 |
| Dec | 2.56 | 21.3 | 62 |
Solar potential of Qionghai explained
Qionghai receives an average of 4.25 kilowatt-hours of solar energy per square metre per day, measured over four decades of satellite observation. In practical terms, every kilowatt-peak of installed PV capacity yields about 1241 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This is a solid mid-range solar resource: production is meaningful year-round, though winter output drops noticeably.
Frequently asked questions
Is solar worth it in Qionghai?
With 4.25 kWh/m²/day of average irradiation, a 1 kWp system in Qionghai produces roughly 1241 kWh per year. That is a good solar resource; with current panel prices most systems pay back well within their lifetime.
How much electricity would a 5 kW system produce in Qionghai?
Approximately 6,000 kWh per year — enough to cover a large share of a typical household's consumption.
What data is this based on?
Long-term satellite observations from NASA POWER (1981–present) and the PVGIS SARAH3 database, assuming a performance ratio of 80%.
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