How much electricity do solar panels make in Marseille, France?
≈ 6,221 kWh a year
In Marseille, France, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (35°) make about 6,221 kWh of electricity a year — 1,555 kWh for every installed kilowatt.
1,555 kWh/kWpspecific yield per year
35°best yearly panel tilt
1,622 kWh/m²yearly sunlight on level ground
Julybest month (December lowest)
Solar energy month by month in Marseille
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 344 | 86 |
| February | 409 | 102 |
| March | 549 | 137 |
| April | 581 | 145 |
| May | 638 | 160 |
| June | 663 | 166 |
| July | 692 | 173 |
| August | 659 | 165 |
| September | 571 | 143 |
| October | 454 | 114 |
| November | 344 | 86 |
| December | 318 | 80 |
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.