How much electricity do solar panels make in Houston, United States?
≈ 5,996 kWh a year
In Houston, United States, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (25°) make about 5,996 kWh of electricity a year — 1,499 kWh for every installed kilowatt.
1,499 kWh/kWpspecific yield per year
25°best yearly panel tilt
1,700 kWh/m²yearly sunlight on level ground
Maybest month (December lowest)
Solar energy month by month in Houston
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 417 | 104 |
| February | 384 | 96 |
| March | 514 | 129 |
| April | 533 | 133 |
| May | 568 | 142 |
| June | 555 | 139 |
| July | 568 | 142 |
| August | 568 | 142 |
| September | 521 | 130 |
| October | 541 | 135 |
| November | 443 | 111 |
| December | 383 | 96 |
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.