Solar energy in Rosario, Argentina
Average irradiation 4.87 kWh/m²/day · ~1422 kWh per kWp per year
Monthly solar irradiation & temperature in Rosario (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 7.15 | 26.0 | 174 |
| Feb | 6.11 | 24.4 | 149 |
| Mar | 5.21 | 21.8 | 127 |
| Apr | 3.87 | 17.8 | 94 |
| May | 2.90 | 13.8 | 71 |
| Jun | 2.45 | 10.8 | 60 |
| Jul | 2.68 | 10.1 | 65 |
| Aug | 3.59 | 12.1 | 87 |
| Sep | 4.74 | 14.9 | 115 |
| Oct | 5.64 | 18.4 | 137 |
| Nov | 6.86 | 21.9 | 167 |
| Dec | 7.24 | 24.3 | 176 |
Solar potential of Rosario explained
Rosario receives an average of 4.87 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 1422 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Rosario among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Rosario?
With 4.87 kWh/m²/day of average irradiation, a 1 kWp system in Rosario produces roughly 1422 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 Rosario?
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 →