Solar energy in Changsha, China
Average irradiation 3.26 kWh/m²/day · ~952 kWh per kWp per year
Monthly solar irradiation & temperature in Changsha (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.76 | 5.3 | 43 |
| Feb | 2.12 | 8.4 | 52 |
| Mar | 2.81 | 13.0 | 68 |
| Apr | 3.56 | 18.4 | 86 |
| May | 3.91 | 22.8 | 95 |
| Jun | 4.17 | 26.0 | 101 |
| Jul | 5.17 | 28.4 | 126 |
| Aug | 4.69 | 27.9 | 114 |
| Sep | 3.74 | 24.7 | 91 |
| Oct | 2.92 | 19.3 | 71 |
| Nov | 2.35 | 13.3 | 57 |
| Dec | 1.94 | 6.8 | 47 |
Solar potential of Changsha explained
Changsha receives an average of 3.26 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 952 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 Changsha?
With 3.26 kWh/m²/day of average irradiation, a 1 kWp system in Changsha produces roughly 952 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 Changsha?
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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