How much electricity do solar panels make in Hegang, People's Republic of China?
≈ 5,924 kWh a year
In Hegang, 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 (40°) make about 5,924 kWh of electricity a year — 1,481 kWh for every installed kilowatt.
1,481 kWh/kWpspecific yield per year
40°best yearly panel tilt
1,369 kWh/m²yearly sunlight on level ground
Marchbest month (December lowest)
Solar energy month by month in Hegang
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 478 | 120 |
| February | 539 | 135 |
| March | 629 | 157 |
| April | 539 | 135 |
| May | 537 | 134 |
| June | 493 | 123 |
| July | 497 | 124 |
| August | 486 | 121 |
| September | 497 | 124 |
| October | 471 | 118 |
| November | 380 | 95 |
| December | 376 | 94 |
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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