Solar energy in Najrān, Saudi Arabia
Average irradiation 6.61 kWh/m²/day · ~1930 kWh per kWp per year
Monthly solar irradiation & temperature in Najrān (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 5.45 | 17.6 | 132 |
| Feb | 6.18 | 20.1 | 150 |
| Mar | 6.86 | 23.3 | 167 |
| Apr | 7.18 | 26.0 | 175 |
| May | 7.51 | 28.4 | 183 |
| Jun | 7.50 | 30.2 | 182 |
| Jul | 6.98 | 31.3 | 170 |
| Aug | 6.90 | 30.7 | 168 |
| Sep | 7.04 | 27.8 | 171 |
| Oct | 6.66 | 22.8 | 162 |
| Nov | 5.76 | 19.9 | 140 |
| Dec | 5.33 | 17.3 | 130 |
Solar potential of Najrān explained
Najrān receives an average of 6.61 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 1930 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Najrān among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Najrān?
With 6.61 kWh/m²/day of average irradiation, a 1 kWp system in Najrān produces roughly 1930 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 Najrān?
Approximately 10,000 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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