How much electricity do solar panels make in Guiyang, People's Republic of China?
≈ 4,101 kWh a year
In Guiyang, 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 (15°) make about 4,101 kWh of electricity a year — 1,025 kWh for every installed kilowatt.
1,025 kWh/kWpspecific yield per year
15°best yearly panel tilt
1,169 kWh/m²yearly sunlight on level ground
Augustbest month (January lowest)
Solar energy month by month in Guiyang
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 217 | 54 |
| February | 265 | 66 |
| March | 343 | 86 |
| April | 398 | 99 |
| May | 412 | 103 |
| June | 367 | 92 |
| July | 468 | 117 |
| August | 469 | 117 |
| September | 377 | 94 |
| October | 285 | 71 |
| November | 273 | 68 |
| December | 228 | 57 |
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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