Solar energy in Davao, Philippines
Average irradiation 4.96 kWh/m²/day · ~1448 kWh per kWp per year
Monthly solar irradiation & temperature in Davao (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.22 | 26.7 | 103 |
| Feb | 4.80 | 26.6 | 117 |
| Mar | 5.34 | 27.1 | 130 |
| Apr | 5.64 | 27.9 | 137 |
| May | 5.27 | 28.3 | 128 |
| Jun | 4.99 | 27.9 | 121 |
| Jul | 4.93 | 27.6 | 120 |
| Aug | 5.13 | 27.6 | 125 |
| Sep | 5.18 | 27.8 | 126 |
| Oct | 5.00 | 27.9 | 122 |
| Nov | 4.62 | 27.7 | 112 |
| Dec | 4.34 | 27.3 | 105 |
Solar potential of Davao explained
Davao receives an average of 4.96 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 1448 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Davao among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Davao?
With 4.96 kWh/m²/day of average irradiation, a 1 kWp system in Davao produces roughly 1448 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 Davao?
Approximately 7,000 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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