Solar energy in Shiyan, China
Average irradiation 3.49 kWh/m²/day · ~1019 kWh per kWp per year
Monthly solar irradiation & temperature in Shiyan (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.25 | -0.0 | 55 |
| Feb | 2.60 | 3.0 | 63 |
| Mar | 3.61 | 8.7 | 88 |
| Apr | 4.37 | 14.6 | 106 |
| May | 4.64 | 19.1 | 113 |
| Jun | 4.79 | 23.4 | 117 |
| Jul | 4.75 | 25.7 | 116 |
| Aug | 4.26 | 24.3 | 104 |
| Sep | 3.34 | 19.5 | 81 |
| Oct | 2.76 | 13.9 | 67 |
| Nov | 2.33 | 7.3 | 57 |
| Dec | 2.13 | 1.3 | 52 |
Solar potential of Shiyan explained
Shiyan receives an average of 3.49 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 1019 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. While winters are dark, modern panel prices mean solar can still be economical — self-consumption value matters more than raw sunshine here.
Frequently asked questions
Is solar worth it in Shiyan?
With 3.49 kWh/m²/day of average irradiation, a 1 kWp system in Shiyan produces roughly 1019 kWh per year. That is a moderate solar resource; economics depend more on local electricity prices and incentives, which our AI planner can research for you.
How much electricity would a 5 kW system produce in Shiyan?
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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