Solar energy in Xiamen, China
Average irradiation 4.17 kWh/m²/day · ~1218 kWh per kWp per year
Monthly solar irradiation & temperature in Xiamen (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.86 | 13.0 | 70 |
| Feb | 3.09 | 14.2 | 75 |
| Mar | 3.55 | 16.4 | 86 |
| Apr | 4.20 | 20.3 | 102 |
| May | 4.62 | 23.9 | 112 |
| Jun | 5.16 | 26.5 | 125 |
| Jul | 6.08 | 27.8 | 148 |
| Aug | 5.50 | 27.8 | 134 |
| Sep | 4.87 | 26.5 | 118 |
| Oct | 4.14 | 23.0 | 101 |
| Nov | 3.21 | 19.4 | 78 |
| Dec | 2.79 | 14.7 | 68 |
Solar potential of Xiamen explained
Xiamen receives an average of 4.17 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 1218 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 Xiamen?
With 4.17 kWh/m²/day of average irradiation, a 1 kWp system in Xiamen produces roughly 1218 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 Xiamen?
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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