Solar energy in General Santos, Philippines
Average irradiation 5.21 kWh/m²/day · ~1521 kWh per kWp per year
Monthly solar irradiation & temperature in General Santos (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.49 | 24.7 | 109 |
| Feb | 5.17 | 24.8 | 126 |
| Mar | 5.68 | 25.4 | 138 |
| Apr | 5.93 | 26.0 | 144 |
| May | 5.42 | 25.7 | 132 |
| Jun | 5.01 | 25.1 | 122 |
| Jul | 5.05 | 24.6 | 123 |
| Aug | 5.26 | 24.6 | 128 |
| Sep | 5.59 | 24.7 | 136 |
| Oct | 5.36 | 25.0 | 130 |
| Nov | 4.97 | 25.1 | 121 |
| Dec | 4.64 | 25.0 | 113 |
Solar potential of General Santos explained
General Santos receives an average of 5.21 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 1521 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places General Santos among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in General Santos?
With 5.21 kWh/m²/day of average irradiation, a 1 kWp system in General Santos produces roughly 1521 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 General Santos?
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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