How much electricity do solar panels make in London, United Kingdom?
≈ 4,290 kWh a year
In London, United Kingdom, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (35°) make about 4,290 kWh of electricity a year — 1,072 kWh for every installed kilowatt.
1,072 kWh/kWpspecific yield per year
35°best yearly panel tilt
1,077 kWh/m²yearly sunlight on level ground
Julybest month (December lowest)
Solar energy month by month in London
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 178 | 45 |
| February | 234 | 59 |
| March | 366 | 92 |
| April | 464 | 116 |
| May | 516 | 129 |
| June | 514 | 128 |
| July | 516 | 129 |
| August | 460 | 115 |
| September | 399 | 100 |
| October | 288 | 72 |
| November | 192 | 48 |
| December | 162 | 41 |
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.