Solar energy in Hualien City, Taiwan
Average irradiation 3.86 kWh/m²/day · ~1127 kWh per kWp per year
Monthly solar irradiation & temperature in Hualien City (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.34 | 20.1 | 57 |
| Feb | 2.77 | 20.8 | 67 |
| Mar | 3.15 | 21.8 | 77 |
| Apr | 3.66 | 24.1 | 89 |
| May | 4.39 | 26.4 | 107 |
| Jun | 5.24 | 28.2 | 127 |
| Jul | 5.98 | 28.9 | 145 |
| Aug | 5.30 | 28.8 | 129 |
| Sep | 4.58 | 27.9 | 111 |
| Oct | 3.79 | 25.9 | 92 |
| Nov | 2.78 | 24.0 | 68 |
| Dec | 2.35 | 21.2 | 57 |
Solar potential of Hualien City explained
Hualien City receives an average of 3.86 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 1127 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 Hualien City?
With 3.86 kWh/m²/day of average irradiation, a 1 kWp system in Hualien City produces roughly 1127 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 Hualien City?
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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