How much electricity do solar panels make in Saitama, Japan?
≈ 5,383 kWh a year
In Saitama, Japan, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (35°) make about 5,383 kWh of electricity a year — 1,346 kWh for every installed kilowatt.
1,346 kWh/kWpspecific yield per year
35°best yearly panel tilt
1,403 kWh/m²yearly sunlight on level ground
Marchbest month (November lowest)
Solar energy month by month in Saitama
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 473 | 118 |
| February | 443 | 111 |
| March | 511 | 128 |
| April | 496 | 124 |
| May | 493 | 123 |
| June | 415 | 104 |
| July | 433 | 108 |
| August | 476 | 119 |
| September | 410 | 103 |
| October | 401 | 100 |
| November | 397 | 99 |
| December | 434 | 109 |
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.