How much electricity do solar panels make in Kitakyushu, Japan?
≈ 5,073 kWh a year
In Kitakyushu, Japan, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (25°) make about 5,073 kWh of electricity a year — 1,268 kWh for every installed kilowatt.
1,268 kWh/kWpspecific yield per year
25°best yearly panel tilt
1,396 kWh/m²yearly sunlight on level ground
Maybest month (December lowest)
Solar energy month by month in Kitakyushu
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 308 | 77 |
| February | 347 | 87 |
| March | 471 | 118 |
| April | 504 | 126 |
| May | 523 | 131 |
| June | 430 | 108 |
| July | 460 | 115 |
| August | 508 | 127 |
| September | 434 | 109 |
| October | 437 | 109 |
| November | 353 | 88 |
| December | 298 | 75 |
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.