Solar energy in Hengyang, China
Average irradiation 3.33 kWh/m²/day · ~972 kWh per kWp per year
Monthly solar irradiation & temperature in Hengyang (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.80 | 5.3 | 44 |
| Feb | 2.13 | 8.5 | 52 |
| Mar | 2.56 | 13.2 | 62 |
| Apr | 3.38 | 18.6 | 82 |
| May | 3.93 | 22.9 | 95 |
| Jun | 4.25 | 26.1 | 103 |
| Jul | 5.41 | 28.3 | 132 |
| Aug | 4.78 | 27.8 | 116 |
| Sep | 3.87 | 24.7 | 94 |
| Oct | 3.16 | 19.5 | 77 |
| Nov | 2.54 | 13.4 | 62 |
| Dec | 2.11 | 6.8 | 51 |
Solar potential of Hengyang explained
Hengyang receives an average of 3.33 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 972 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 Hengyang?
With 3.33 kWh/m²/day of average irradiation, a 1 kWp system in Hengyang produces roughly 972 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 Hengyang?
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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