How much electricity do solar panels make in Rio de Janeiro, Brazil?
≈ 6,073 kWh a year
In Rio de Janeiro, Brazil, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (20°) make about 6,073 kWh of electricity a year — 1,518 kWh for every installed kilowatt.
1,518 kWh/kWpspecific yield per year
20°best yearly panel tilt
1,759 kWh/m²yearly sunlight on level ground
Januarybest month (June lowest)
Solar energy month by month in Rio de Janeiro
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 564 | 141 |
| February | 538 | 134 |
| March | 552 | 138 |
| April | 506 | 127 |
| May | 457 | 114 |
| June | 433 | 108 |
| July | 469 | 117 |
| August | 511 | 128 |
| September | 489 | 122 |
| October | 519 | 130 |
| November | 493 | 123 |
| December | 543 | 136 |
How these numbers were calculated
NASA POWER long-term monthly means on a 1° grid around the city, the monthly method of Duffie & Beckman (isotropic sky, each month's average day), panel temperature from NOCT, 10 % other losses and a 96 % inverter. No shading, snow or product-specific data; expect ±10 % against a detailed tool such as PVGIS. To change the number of panels, their rating, tilt, direction or your roof size, use Blorp's free solar roof tool — every result shows its equation and the numbers used.