Solar energy in Nantong, China
Average irradiation 3.66 kWh/m²/day · ~1069 kWh per kWp per year
Monthly solar irradiation & temperature in Nantong (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.29 | 2.8 | 56 |
| Feb | 2.73 | 4.8 | 66 |
| Mar | 3.82 | 9.1 | 93 |
| Apr | 4.57 | 14.9 | 111 |
| May | 4.79 | 20.6 | 117 |
| Jun | 4.36 | 24.6 | 106 |
| Jul | 4.64 | 27.9 | 113 |
| Aug | 4.70 | 27.6 | 114 |
| Sep | 3.96 | 23.3 | 96 |
| Oct | 3.31 | 17.9 | 80 |
| Nov | 2.50 | 11.8 | 61 |
| Dec | 2.22 | 4.9 | 54 |
Solar potential of Nantong explained
Nantong receives an average of 3.66 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 1069 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 Nantong?
With 3.66 kWh/m²/day of average irradiation, a 1 kWp system in Nantong produces roughly 1069 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 Nantong?
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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