Solar energy in Jember, Indonesia
Average irradiation 5.66 kWh/m²/day · ~1653 kWh per kWp per year
Monthly solar irradiation & temperature in Jember (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 5.55 | 24.0 | 135 |
| Feb | 5.68 | 23.9 | 138 |
| Mar | 5.71 | 24.0 | 139 |
| Apr | 5.62 | 24.1 | 137 |
| May | 5.25 | 23.6 | 128 |
| Jun | 4.96 | 22.8 | 121 |
| Jul | 5.11 | 22.4 | 124 |
| Aug | 5.76 | 22.9 | 140 |
| Sep | 6.36 | 24.6 | 155 |
| Oct | 6.48 | 26.1 | 158 |
| Nov | 6.01 | 26.1 | 146 |
| Dec | 5.40 | 24.6 | 131 |
Solar potential of Jember explained
Jember receives an average of 5.66 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 1653 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Jember among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Jember?
With 5.66 kWh/m²/day of average irradiation, a 1 kWp system in Jember produces roughly 1653 kWh per year. That is an excellent solar resource — payback periods are typically among the shortest worldwide.
How much electricity would a 5 kW system produce in Jember?
Approximately 8,000 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%.
Compare with nearby cities
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