Solar energy in Xi’an, China
Average irradiation 3.83 kWh/m²/day · ~1118 kWh per kWp per year
Monthly solar irradiation & temperature in Xi’an (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.49 | -0.0 | 61 |
| Feb | 3.00 | 3.6 | 73 |
| Mar | 4.04 | 9.7 | 98 |
| Apr | 4.85 | 16.1 | 118 |
| May | 5.22 | 21.2 | 127 |
| Jun | 5.35 | 25.8 | 130 |
| Jul | 5.14 | 27.5 | 125 |
| Aug | 4.45 | 26.1 | 108 |
| Sep | 3.53 | 20.5 | 86 |
| Oct | 2.98 | 14.4 | 73 |
| Nov | 2.58 | 7.3 | 63 |
| Dec | 2.37 | 1.1 | 58 |
Solar potential of Xi’an explained
Xi’an receives an average of 3.83 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 1118 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 Xi’an?
With 3.83 kWh/m²/day of average irradiation, a 1 kWp system in Xi’an produces roughly 1118 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 Xi’an?
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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