Solar energy in Dadonghai, China
Average irradiation 4.63 kWh/m²/day · ~1352 kWh per kWp per year
Monthly solar irradiation & temperature in Dadonghai (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.58 | 21.7 | 87 |
| Feb | 4.21 | 22.2 | 102 |
| Mar | 4.65 | 23.9 | 113 |
| Apr | 5.37 | 26.2 | 131 |
| May | 5.75 | 28.2 | 140 |
| Jun | 5.32 | 29.0 | 129 |
| Jul | 5.32 | 28.7 | 129 |
| Aug | 4.96 | 28.6 | 121 |
| Sep | 4.71 | 28.3 | 115 |
| Oct | 4.35 | 26.9 | 106 |
| Nov | 3.91 | 25.1 | 95 |
| Dec | 3.36 | 22.7 | 82 |
Solar potential of Dadonghai explained
Dadonghai receives an average of 4.63 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 1352 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Dadonghai among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Dadonghai?
With 4.63 kWh/m²/day of average irradiation, a 1 kWp system in Dadonghai produces roughly 1352 kWh per year. That is an excellent solar resource — payback periods are typically among the shortest worldwide.
How much electricity would a 5 kW system produce in Dadonghai?
Approximately 7,000 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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