Solar energy in Windhoek, Namibia
Average irradiation 6.33 kWh/m²/day · ~1848 kWh per kWp per year
Monthly solar irradiation & temperature in Windhoek (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 7.40 | 24.1 | 180 |
| Feb | 6.83 | 23.0 | 166 |
| Mar | 6.21 | 21.6 | 151 |
| Apr | 5.56 | 18.9 | 135 |
| May | 5.10 | 15.6 | 124 |
| Jun | 4.71 | 12.4 | 115 |
| Jul | 4.96 | 12.3 | 121 |
| Aug | 5.73 | 15.3 | 139 |
| Sep | 6.68 | 19.5 | 162 |
| Oct | 7.27 | 22.5 | 177 |
| Nov | 7.73 | 23.4 | 188 |
| Dec | 7.80 | 24.1 | 190 |
Solar potential of Windhoek explained
Windhoek receives an average of 6.33 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 1848 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Windhoek among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Windhoek?
With 6.33 kWh/m²/day of average irradiation, a 1 kWp system in Windhoek produces roughly 1848 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 Windhoek?
Approximately 9,000 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
Cairo (5.9) · Casablanca (5.3) · Lagos (4.6) · Nairobi (5.5) · Johannesburg (5.5) · Cape Town (5.3) · all cities →