Solar energy in Kaifeng, China
Average irradiation 3.74 kWh/m²/day · ~1092 kWh per kWp per year
Monthly solar irradiation & temperature in Kaifeng (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.27 | -0.3 | 55 |
| Feb | 2.81 | 2.9 | 68 |
| Mar | 4.03 | 9.3 | 98 |
| Apr | 4.81 | 16.2 | 117 |
| May | 5.24 | 22.5 | 128 |
| Jun | 5.13 | 27.3 | 125 |
| Jul | 4.69 | 28.7 | 114 |
| Aug | 4.43 | 26.9 | 108 |
| Sep | 3.74 | 22.0 | 91 |
| Oct | 3.04 | 15.6 | 74 |
| Nov | 2.45 | 7.6 | 60 |
| Dec | 2.18 | 1.1 | 53 |
Solar potential of Kaifeng explained
Kaifeng receives an average of 3.74 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 1092 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 Kaifeng?
With 3.74 kWh/m²/day of average irradiation, a 1 kWp system in Kaifeng produces roughly 1092 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 Kaifeng?
Approximately 5,000 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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