Solar energy in Surakarta, Indonesia
Average irradiation 5.16 kWh/m²/day · ~1507 kWh per kWp per year
Monthly solar irradiation & temperature in Surakarta (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.79 | 24.7 | 117 |
| Feb | 4.71 | 24.7 | 114 |
| Mar | 4.92 | 24.9 | 120 |
| Apr | 5.06 | 25.0 | 123 |
| May | 5.03 | 24.7 | 122 |
| Jun | 4.85 | 24.0 | 118 |
| Jul | 5.07 | 23.8 | 123 |
| Aug | 5.66 | 24.6 | 138 |
| Sep | 6.02 | 25.9 | 146 |
| Oct | 5.77 | 26.5 | 140 |
| Nov | 5.25 | 25.8 | 128 |
| Dec | 4.76 | 24.9 | 116 |
Solar potential of Surakarta explained
Surakarta receives an average of 5.16 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 1507 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Surakarta among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Surakarta?
With 5.16 kWh/m²/day of average irradiation, a 1 kWp system in Surakarta produces roughly 1507 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 Surakarta?
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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