Solar energy in San Fernando, Philippines
Average irradiation 5.09 kWh/m²/day · ~1486 kWh per kWp per year
Monthly solar irradiation & temperature in San Fernando (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.67 | 24.4 | 114 |
| Feb | 5.36 | 25.6 | 130 |
| Mar | 6.04 | 27.4 | 147 |
| Apr | 6.39 | 29.4 | 155 |
| May | 5.84 | 28.9 | 142 |
| Jun | 5.31 | 27.3 | 129 |
| Jul | 4.77 | 26.5 | 116 |
| Aug | 4.27 | 26.3 | 104 |
| Sep | 4.73 | 26.3 | 115 |
| Oct | 4.85 | 26.0 | 118 |
| Nov | 4.51 | 25.4 | 110 |
| Dec | 4.30 | 24.7 | 105 |
Solar potential of San Fernando explained
San Fernando receives an average of 5.09 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 1486 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places San Fernando among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in San Fernando?
With 5.09 kWh/m²/day of average irradiation, a 1 kWp system in San Fernando produces roughly 1486 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 San Fernando?
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%.
Compare with nearby cities
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