Solar energy in Keelung, Taiwan
Average irradiation 3.7 kWh/m²/day · ~1080 kWh per kWp per year
Monthly solar irradiation & temperature in Keelung (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.97 | 17.0 | 48 |
| Feb | 2.26 | 17.8 | 55 |
| Mar | 2.98 | 19.1 | 73 |
| Apr | 3.67 | 21.9 | 89 |
| May | 4.25 | 24.8 | 103 |
| Jun | 4.95 | 27.0 | 120 |
| Jul | 6.22 | 28.3 | 151 |
| Aug | 5.69 | 28.1 | 138 |
| Sep | 4.62 | 26.7 | 112 |
| Oct | 3.51 | 24.1 | 85 |
| Nov | 2.42 | 21.8 | 59 |
| Dec | 1.90 | 18.5 | 46 |
Solar potential of Keelung explained
Keelung receives an average of 3.7 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 1080 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 Keelung?
With 3.7 kWh/m²/day of average irradiation, a 1 kWp system in Keelung produces roughly 1080 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 Keelung?
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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