How much electricity do solar panels make in Pretoria, South Africa?
≈ 7,407 kWh a year
In Pretoria, South Africa, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (25°) make about 7,407 kWh of electricity a year — 1,852 kWh for every installed kilowatt.
1,852 kWh/kWpspecific yield per year
25°best yearly panel tilt
2,065 kWh/m²yearly sunlight on level ground
Augustbest month (February lowest)
Solar energy month by month in Pretoria
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 617 | 154 |
| February | 558 | 139 |
| March | 602 | 151 |
| April | 559 | 140 |
| May | 618 | 154 |
| June | 590 | 148 |
| July | 642 | 160 |
| August | 669 | 167 |
| September | 668 | 167 |
| October | 657 | 164 |
| November | 613 | 153 |
| December | 614 | 154 |
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.