How much electricity do solar panels make in Ulsan, South Korea?
≈ 5,359 kWh a year
In Ulsan, South Korea, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (30°) make about 5,359 kWh of electricity a year — 1,340 kWh for every installed kilowatt.
1,340 kWh/kWpspecific yield per year
30°best yearly panel tilt
1,430 kWh/m²yearly sunlight on level ground
Maybest month (November lowest)
Solar energy month by month in Ulsan
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 407 | 102 |
| February | 400 | 100 |
| March | 510 | 128 |
| April | 518 | 130 |
| May | 531 | 133 |
| June | 457 | 114 |
| July | 433 | 108 |
| August | 464 | 116 |
| September | 408 | 102 |
| October | 450 | 112 |
| November | 388 | 97 |
| December | 394 | 98 |
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.