How much electricity do solar panels make in Chicago, United States?
≈ 5,303 kWh a year
In Chicago, United States, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (30°) make about 5,303 kWh of electricity a year — 1,326 kWh for every installed kilowatt.
1,326 kWh/kWpspecific yield per year
30°best yearly panel tilt
1,387 kWh/m²yearly sunlight on level ground
Julybest month (December lowest)
Solar energy month by month in Chicago
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 271 | 68 |
| February | 334 | 84 |
| March | 466 | 116 |
| April | 514 | 129 |
| May | 547 | 137 |
| June | 564 | 141 |
| July | 592 | 148 |
| August | 554 | 138 |
| September | 503 | 126 |
| October | 407 | 102 |
| November | 305 | 76 |
| December | 247 | 62 |
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.