Solar energy in Pekalongan, Indonesia
Average irradiation 5.17 kWh/m²/day · ~1510 kWh per kWp per year
Monthly solar irradiation & temperature in Pekalongan (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.62 | 25.4 | 112 |
| Feb | 4.62 | 25.3 | 112 |
| Mar | 5.22 | 25.6 | 127 |
| Apr | 5.10 | 26.1 | 124 |
| May | 4.93 | 26.1 | 120 |
| Jun | 4.81 | 25.4 | 117 |
| Jul | 5.13 | 24.7 | 125 |
| Aug | 5.74 | 24.6 | 139 |
| Sep | 6.15 | 25.7 | 150 |
| Oct | 5.88 | 26.6 | 143 |
| Nov | 5.28 | 26.4 | 128 |
| Dec | 4.62 | 25.7 | 112 |
Solar potential of Pekalongan explained
Pekalongan receives an average of 5.17 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 1510 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Pekalongan among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Pekalongan?
With 5.17 kWh/m²/day of average irradiation, a 1 kWp system in Pekalongan produces roughly 1510 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 Pekalongan?
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%.
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