Solar energy in Viamão, Brazil
Average irradiation 4.57 kWh/m²/day · ~1334 kWh per kWp per year
Monthly solar irradiation & temperature in Viamão (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 6.53 | 24.5 | 159 |
| Feb | 5.96 | 24.6 | 145 |
| Mar | 5.05 | 23.3 | 123 |
| Apr | 3.93 | 20.5 | 96 |
| May | 2.90 | 16.6 | 71 |
| Jun | 2.42 | 14.5 | 59 |
| Jul | 2.64 | 13.6 | 64 |
| Aug | 3.31 | 15.1 | 81 |
| Sep | 3.99 | 16.6 | 97 |
| Oct | 5.04 | 19.1 | 123 |
| Nov | 6.30 | 20.8 | 153 |
| Dec | 6.73 | 23.0 | 164 |
Solar potential of Viamão explained
Viamão receives an average of 4.57 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 1334 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Viamão among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Viamão?
With 4.57 kWh/m²/day of average irradiation, a 1 kWp system in Viamão produces roughly 1334 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 Viamão?
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
São Paulo (4.5) · Rio de Janeiro (4.8) · Buenos Aires (4.6) · Santiago (5) · Bogotá (4.4) · Lima (5.1) · all cities →