How much electricity do solar panels make in Rome, Italy?
≈ 6,025 kWh a year
In Rome, Italy, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (30°) make about 6,025 kWh of electricity a year — 1,506 kWh for every installed kilowatt.
1,506 kWh/kWpspecific yield per year
30°best yearly panel tilt
1,613 kWh/m²yearly sunlight on level ground
Julybest month (December lowest)
Solar energy month by month in Rome
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 311 | 78 |
| February | 369 | 92 |
| March | 503 | 126 |
| April | 567 | 142 |
| May | 643 | 161 |
| June | 664 | 166 |
| July | 704 | 176 |
| August | 668 | 167 |
| September | 543 | 136 |
| October | 452 | 113 |
| November | 312 | 78 |
| December | 290 | 73 |
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.