Solar energy in Zhengzhou, China
Average irradiation 3.7 kWh/m²/day · ~1080 kWh per kWp per year
Monthly solar irradiation & temperature in Zhengzhou (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.26 | 0.1 | 55 |
| Feb | 2.80 | 3.4 | 68 |
| Mar | 3.99 | 9.8 | 97 |
| Apr | 4.76 | 16.6 | 116 |
| May | 5.20 | 22.9 | 127 |
| Jun | 5.07 | 27.6 | 123 |
| Jul | 4.64 | 29.0 | 113 |
| Aug | 4.37 | 27.1 | 106 |
| Sep | 3.69 | 22.2 | 90 |
| Oct | 3.00 | 15.9 | 73 |
| Nov | 2.44 | 8.0 | 59 |
| Dec | 2.21 | 1.5 | 54 |
Solar potential of Zhengzhou explained
Zhengzhou receives an average of 3.7 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 1080 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 Zhengzhou?
With 3.7 kWh/m²/day of average irradiation, a 1 kWp system in Zhengzhou produces roughly 1080 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 Zhengzhou?
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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