Solar energy in Dongguan, China
Average irradiation 3.76 kWh/m²/day · ~1098 kWh per kWp per year
Monthly solar irradiation & temperature in Dongguan (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.83 | 14.5 | 69 |
| Feb | 2.80 | 17.1 | 68 |
| Mar | 2.86 | 20.2 | 70 |
| Apr | 3.28 | 23.7 | 80 |
| May | 3.95 | 26.5 | 96 |
| Jun | 4.17 | 27.8 | 101 |
| Jul | 5.00 | 28.4 | 122 |
| Aug | 4.87 | 28.4 | 118 |
| Sep | 4.59 | 27.2 | 112 |
| Oct | 4.22 | 24.1 | 103 |
| Nov | 3.48 | 20.5 | 85 |
| Dec | 3.08 | 15.4 | 75 |
Solar potential of Dongguan explained
Dongguan receives an average of 3.76 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 1098 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 Dongguan?
With 3.76 kWh/m²/day of average irradiation, a 1 kWp system in Dongguan produces roughly 1098 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 Dongguan?
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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