Solar energy in Tsuen Wan, Hong Kong
Average irradiation 4.13 kWh/m²/day · ~1206 kWh per kWp per year
Monthly solar irradiation & temperature in Tsuen Wan (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.10 | 16.0 | 75 |
| Feb | 3.15 | 17.8 | 77 |
| Mar | 3.39 | 20.2 | 82 |
| Apr | 3.97 | 23.3 | 96 |
| May | 4.62 | 26.3 | 112 |
| Jun | 4.76 | 27.9 | 116 |
| Jul | 5.46 | 28.5 | 133 |
| Aug | 5.15 | 28.4 | 125 |
| Sep | 4.79 | 27.6 | 117 |
| Oct | 4.43 | 25.1 | 108 |
| Nov | 3.63 | 21.6 | 88 |
| Dec | 3.18 | 17.1 | 77 |
Solar potential of Tsuen Wan explained
Tsuen Wan receives an average of 4.13 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 1206 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 Tsuen Wan?
With 4.13 kWh/m²/day of average irradiation, a 1 kWp system in Tsuen Wan produces roughly 1206 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 Tsuen Wan?
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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