Solar energy in Jeonju, South Korea
Average irradiation 3.91 kWh/m²/day · ~1142 kWh per kWp per year
Monthly solar irradiation & temperature in Jeonju (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.55 | -1.0 | 62 |
| Feb | 3.32 | 0.9 | 81 |
| Mar | 4.35 | 5.2 | 106 |
| Apr | 5.04 | 11.2 | 123 |
| May | 5.53 | 17.0 | 134 |
| Jun | 4.91 | 21.7 | 119 |
| Jul | 4.22 | 25.0 | 103 |
| Aug | 4.41 | 25.8 | 107 |
| Sep | 4.00 | 20.9 | 97 |
| Oct | 3.65 | 14.5 | 89 |
| Nov | 2.69 | 7.8 | 65 |
| Dec | 2.30 | 1.1 | 56 |
Solar potential of Jeonju explained
Jeonju receives an average of 3.91 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 1142 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 Jeonju?
With 3.91 kWh/m²/day of average irradiation, a 1 kWp system in Jeonju produces roughly 1142 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 Jeonju?
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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