Solar energy in Langfang, China
Average irradiation 3.95 kWh/m²/day · ~1153 kWh per kWp per year
Monthly solar irradiation & temperature in Langfang (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.34 | -4.6 | 57 |
| Feb | 3.02 | -1.2 | 74 |
| Mar | 4.42 | 5.3 | 108 |
| Apr | 5.29 | 13.6 | 129 |
| May | 5.87 | 20.9 | 143 |
| Jun | 5.23 | 25.4 | 127 |
| Jul | 4.72 | 27.4 | 115 |
| Aug | 4.64 | 25.8 | 113 |
| Sep | 4.11 | 20.7 | 100 |
| Oct | 3.21 | 12.6 | 78 |
| Nov | 2.41 | 3.5 | 59 |
| Dec | 2.12 | -3.1 | 52 |
Solar potential of Langfang explained
Langfang receives an average of 3.95 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 1153 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 Langfang?
With 3.95 kWh/m²/day of average irradiation, a 1 kWp system in Langfang produces roughly 1153 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 Langfang?
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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