How much electricity do solar panels make in Nanjing, People's Republic of China?
≈ 4,764 kWh a year
In Nanjing, People's Republic of China, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (25°) make about 4,764 kWh of electricity a year — 1,191 kWh for every installed kilowatt.
1,191 kWh/kWpspecific yield per year
25°best yearly panel tilt
1,319 kWh/m²yearly sunlight on level ground
Maybest month (February lowest)
Solar energy month by month in Nanjing
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 320 | 80 |
| February | 307 | 77 |
| March | 436 | 109 |
| April | 458 | 114 |
| May | 465 | 116 |
| June | 407 | 102 |
| July | 447 | 112 |
| August | 455 | 114 |
| September | 406 | 101 |
| October | 401 | 100 |
| November | 337 | 84 |
| December | 327 | 82 |
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.
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