Solar energy in Hangzhou, China
Average irradiation 3.53 kWh/m²/day · ~1031 kWh per kWp per year
Monthly solar irradiation & temperature in Hangzhou (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.11 | 3.4 | 51 |
| Feb | 2.54 | 5.9 | 62 |
| Mar | 3.49 | 10.3 | 85 |
| Apr | 4.20 | 16.1 | 102 |
| May | 4.47 | 21.3 | 109 |
| Jun | 3.99 | 24.9 | 97 |
| Jul | 5.07 | 28.4 | 123 |
| Aug | 4.80 | 28.1 | 117 |
| Sep | 3.79 | 23.9 | 92 |
| Oct | 3.27 | 18.3 | 79 |
| Nov | 2.42 | 12.3 | 59 |
| Dec | 2.19 | 5.3 | 53 |
Solar potential of Hangzhou explained
Hangzhou receives an average of 3.53 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 1031 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 Hangzhou?
With 3.53 kWh/m²/day of average irradiation, a 1 kWp system in Hangzhou produces roughly 1031 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 Hangzhou?
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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