How much electricity do solar panels make in Hanoi, Vietnam?
≈ 4,667 kWh a year
In Hanoi, Vietnam, ten 400 W mono PERC solar panels (4 kWp) on a roof facing the equator at the best yearly tilt (15°) make about 4,667 kWh of electricity a year — 1,167 kWh for every installed kilowatt.
1,167 kWh/kWpspecific yield per year
15°best yearly panel tilt
1,384 kWh/m²yearly sunlight on level ground
Maybest month (January lowest)
Solar energy month by month in Hanoi
| Month | 4 kWp system (kWh) | per kWp (kWh) |
|---|---|---|
| January | 273 | 68 |
| February | 274 | 69 |
| March | 318 | 80 |
| April | 380 | 95 |
| May | 476 | 119 |
| June | 472 | 118 |
| July | 473 | 118 |
| August | 457 | 114 |
| September | 445 | 111 |
| October | 414 | 104 |
| November | 371 | 93 |
| December | 313 | 78 |
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.