How much electricity do solar panels make in Saint Petersburg, Russia?
≈ 3,802 kWh a year
In Saint Petersburg, Russia, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (40°) make about 3,802 kWh of electricity a year — 951 kWh for every installed kilowatt.
951 kWh/kWpspecific yield per year
40°best yearly panel tilt
940 kWh/m²yearly sunlight on level ground
Maybest month (December lowest)
Solar energy month by month in Saint Petersburg
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 81 | 20 |
| February | 172 | 43 |
| March | 381 | 95 |
| April | 465 | 116 |
| May | 555 | 139 |
| June | 530 | 133 |
| July | 527 | 132 |
| August | 466 | 116 |
| September | 329 | 82 |
| October | 187 | 47 |
| November | 75 | 19 |
| December | 33 | 8 |
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.