Solar energy in Hefei, China
Average irradiation 3.57 kWh/m²/day · ~1042 kWh per kWp per year
Monthly solar irradiation & temperature in Hefei (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.15 | 2.0 | 52 |
| Feb | 2.55 | 4.9 | 62 |
| Mar | 3.59 | 10.0 | 87 |
| Apr | 4.32 | 16.2 | 105 |
| May | 4.63 | 21.8 | 113 |
| Jun | 4.38 | 25.8 | 107 |
| Jul | 4.86 | 28.3 | 118 |
| Aug | 4.58 | 27.5 | 111 |
| Sep | 3.81 | 23.2 | 93 |
| Oct | 3.22 | 17.4 | 78 |
| Nov | 2.54 | 10.7 | 62 |
| Dec | 2.17 | 3.7 | 53 |
Solar potential of Hefei explained
Hefei receives an average of 3.57 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 1042 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 Hefei?
With 3.57 kWh/m²/day of average irradiation, a 1 kWp system in Hefei produces roughly 1042 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 Hefei?
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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