How much electricity do solar panels make in Karaj, Iran?
≈ 6,599 kWh a year
In Karaj, Iran, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (30°) make about 6,599 kWh of electricity a year — 1,650 kWh for every installed kilowatt.
1,650 kWh/kWpspecific yield per year
30°best yearly panel tilt
1,802 kWh/m²yearly sunlight on level ground
Junebest month (December lowest)
Solar energy month by month in Karaj
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 419 | 105 |
| February | 425 | 106 |
| March | 542 | 135 |
| April | 561 | 140 |
| May | 644 | 161 |
| June | 673 | 168 |
| July | 669 | 167 |
| August | 672 | 168 |
| September | 622 | 155 |
| October | 554 | 138 |
| November | 425 | 106 |
| December | 394 | 98 |
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.