Solar energy in Wenzhou, China
Average irradiation 3.72 kWh/m²/day · ~1086 kWh per kWp per year
Monthly solar irradiation & temperature in Wenzhou (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.30 | 7.0 | 56 |
| Feb | 2.66 | 8.7 | 65 |
| Mar | 3.36 | 11.7 | 82 |
| Apr | 3.89 | 16.4 | 95 |
| May | 4.08 | 20.8 | 99 |
| Jun | 4.29 | 24.4 | 104 |
| Jul | 5.70 | 27.2 | 139 |
| Aug | 5.22 | 27.0 | 127 |
| Sep | 4.26 | 24.2 | 104 |
| Oct | 3.79 | 19.3 | 92 |
| Nov | 2.64 | 14.5 | 64 |
| Dec | 2.38 | 8.7 | 58 |
Solar potential of Wenzhou explained
Wenzhou receives an average of 3.72 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 1086 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 Wenzhou?
With 3.72 kWh/m²/day of average irradiation, a 1 kWp system in Wenzhou produces roughly 1086 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 Wenzhou?
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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