Solar energy in Bissau, Guinea-Bissau
Average irradiation 5.5 kWh/m²/day · ~1606 kWh per kWp per year
Monthly solar irradiation & temperature in Bissau (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 5.41 | 22.9 | 131 |
| Feb | 5.98 | 25.0 | 145 |
| Mar | 6.62 | 27.3 | 161 |
| Apr | 6.71 | 28.8 | 163 |
| May | 6.27 | 29.3 | 152 |
| Jun | 5.32 | 28.2 | 129 |
| Jul | 4.61 | 26.7 | 112 |
| Aug | 4.56 | 26.2 | 111 |
| Sep | 4.89 | 26.4 | 119 |
| Oct | 5.27 | 27.1 | 128 |
| Nov | 5.25 | 26.3 | 128 |
| Dec | 5.19 | 23.7 | 126 |
Solar potential of Bissau explained
Bissau receives an average of 5.5 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 1606 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Bissau among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Bissau?
With 5.5 kWh/m²/day of average irradiation, a 1 kWp system in Bissau produces roughly 1606 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 Bissau?
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%.
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 →