Solar energy in Miyazaki, Japan
Average irradiation 3.98 kWh/m²/day · ~1162 kWh per kWp per year
Monthly solar irradiation & temperature in Miyazaki (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.69 | 4.3 | 65 |
| Feb | 3.21 | 6.4 | 78 |
| Mar | 4.10 | 9.4 | 100 |
| Apr | 4.77 | 14.1 | 116 |
| May | 4.86 | 18.6 | 118 |
| Jun | 4.08 | 22.0 | 99 |
| Jul | 5.39 | 25.7 | 131 |
| Aug | 5.44 | 26.1 | 132 |
| Sep | 4.31 | 23.3 | 105 |
| Oct | 3.57 | 18.0 | 87 |
| Nov | 2.81 | 12.2 | 68 |
| Dec | 2.49 | 6.4 | 61 |
Solar potential of Miyazaki explained
Miyazaki receives an average of 3.98 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 1162 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 Miyazaki?
With 3.98 kWh/m²/day of average irradiation, a 1 kWp system in Miyazaki produces roughly 1162 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 Miyazaki?
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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